Core wire-connecting device
This invention relates to a device for automatically connecting the core wires of a telecommunication cable such as a telephone line. 
     Hitherto, an operator has manually connected core wires by inserting into a connector those end portions of the core wires which are to be joined together. The core wires of a telecommunication cable laid in an underground duct are connected by an operator in a manhole. However, the manhole has a narrow space and moreover is dark inside, possibly resulting in the loss of a connector and providing too unwholesome an environment for an operator to work long therein. Further, the connector which is designed to connect fine cable core wires generally has such a small size as about 5 mm in outer diameter and about 11 mm long, presenting considerable difficulties in manual handling. 
     The primary object of this invention is to provide a core wire-connecting device which automatically effects the operation of inserting core wires into a connector and fixing them in the joined state, thereby releasing an operator from the troublesome work of inserting into a small connector those end portions of core wires which are to be joined together, and also reducing his physical and mental stresses. 
     Another object of the invention is to provide a core wire-connecting device which saves an operator from the manual handling of a connector, thereby eliminating the possibility of the connector being lost, for example, in a manhole and decreasing his work time therein. 
     Still another object of the invention is to provide a core wire-connecting device which makes it unnecessary for an operator to achieve advanced skill with respect to the connection of core wires and the handling of a connector and moreover always enables core wires to be connected together under the same conditions. 
     SUMMARY OF THE INVENTION 
     According to this invention, there is provided a core wire-connecting device which comprises a driving shaft and main shaft rotatably received in a fixed housing in parallel relationship with each other; a movable housing reciprocatively mounted on the main shaft; a rotor reciprocating therewith and capable of rotating with the main shaft; a plurality of connector receptacle means formed in the periphery of the rotor equidistantly spaced in a circumferential direction to receive connectors each formed of a sleeve and a conical wedge received therein; intermittent rotation means provided between the main shaft and driving shaft so as to intermittently rotate the main shaft, together with the rotor through an angle defined by the respective adjacent receptacle means with the main shaft, each time the driving shaft is rotated through a prescribed angle; reciprocating means for moving the rotor back and forth along the main shaft when the main shaft is not rotated by the intermittent rotation means and for bringing core wires into the sleeve; connector-feeding mechanism for delivering connectors one by one from a belt-like magazine on which the connectors are arranged equidistantly lengthwise in parallel with each other to any of the receptacle means when said any of the receptacle means is brought to a first station of said movable housing; conical wedge-removing means disposed at one end of the rotor in alignment with the receptacle means at said first station so as to push the conical wedge out of the sleeve of the connector received in said receptacle means to the other end of the rotor; a core cutting-off mechanism mounted on the movable housing in alignment with the receptacle means disposed near said one end of the rotor at a second station of said movable housing which is circumferentially separated from said first station through an angle corresponding to an angle extended between adjacent front receptacles with respect to the axis of said rotor so as to cut off the unnecessary parts of the joinable end portions of the core wires, thereby allowing the tips of the cut-off ends of the core wires to be brought into alignment; conical wedge-inserting means provided at the other end of the rotor in alignment with the receptacle means at said second station so as to insert the conical wedge into the sleeve; driving means for carrying the conical wedge-inserting means toward said one end of the rotor to an extent corresponding to the distance through which the conical wedge-inserting means pushes the conical wedge now released from the sleeve received in the receptacle means at said second station; and coreholding means for immovably supporting the core wires lengthwise of the main shaft. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     This invention can be more fully understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
     FIG. 1 is a longitudinal sectional view of a connector used with a core wire-connecting device according to this invention; 
     FIG. 2 is a longitudinal sectional view showing the manner in which the connecting end portions of core wires are joined together by the connector of FIG. 1; 
     FIG. 3 is a plan view of a magazine in which plural units of the connector of FIG. 1 are received; 
     FIG. 4 is a front view, partly in section, of the magazine of FIG. 3; 
     FIG. 5 is an oblique view of a core wire-connecting device embodying this invention; 
     FIG. 6 is a lateral sectional view of FIG. 5; 
     FIG. 7 is a plan view, partly in section, of a core wire-connecting device of FIG. 6 with the upper cover taken off; 
     FIG. 8 is a sectional view on line 8--8 of FIG. 6; 
     FIG. 9 is a sectional view on line 9--9 of FIG. 6; 
     FIG. 10 is a sectional view on line 10--10 of FIG. 6; 
     FIG. 11 is a sectional view on line 11--11 of FIG. 6; 
     FIG. 12 is a fractional plan view of FIG. 5, showing the portion at which core wires are inserted into the core wire-connecting device; 
     FIG. 13 is a sectional view on line 13--13 of FIG. 12; 
     FIG. 14 is a fractional rear sectional view illustrating a clutch mechanism included in the core wire-connecting device; 
     FIG. 15 indicates the clutch mechanism in an operating condition; 
     FIG. 16 is a fractional bottom view, partly in section, of FIG. 14; 
     FIG. 17 is an enlarged sectional view on line 17--17 of FIG. 7; 
     FIG. 18 is a sectional view on line 18--18 of FIG. 17; 
     FIG. 19 is a sectional view on line 19--19 on FIG. 7; 
     FIG. 20 is a front view on line 20--20 of FIG. 7; 
     FIG. 21 is a sectional view on line 21--21 of FIG. 7; 
     FIG. 22 is a fractional enlarged view of FIG. 21; 
     FIG. 23 is a sectional view on line 23--23 of FIG. 22; 
     FIG. 24 is a sectional view on line 24--24 of FIG. 25; 
     FIG. 25 is an enlarged front view of a rotor and movable housing; 
     FIG. 26 is a sectional view on line 26--26 of FIG. 24; 
     FIG. 27 is a sectional view on line 27--27 of FIG. 26; 
     FIG. 28 is a sectional view on line 28--28 of FIG. 24; 
     FIG. 29 is a sectional view on line 29--29 of FIG. 24; 
     FIGS. 30 and 31 set forth the manner in which core wires are connected together; 
     FIG. 32 is a front view of a wedge-inserting member; 
     FIG. 33 is a fractional rear view of a die; 
     FIG. 34 is a lateral sectional view of another core wire-connecting device embodying this invention; 
     FIG. 35 is a plan view, partly in section, of the core wire-connecting device of FIG. 34 with the upper cover taken off; 
     FIG. 36 illustrated a starting mechanism; 
     FIG. 37 is a longitudinal sectional view of a rotor; 
     FIG. 38 is a sectional view on line 38--38 of FIG. 37; 
     FIG. 39 is a front view of a connector-releasing mechanism; and 
     FIG. 40 is a fractional enlarged view of FIG. 39. 
    
    
     DETAILED DESCRIPTION 
     Referring to FIG. 1 a connector 1 for connecting the end portions of core wires of a telecommunication cable comprises a cylindrical sleeve 2 (generally measuring 3 mm in inner diameter, 4 mm in outer diameter and 10 mm in length) made of copper, aluminium, alloy thereof or any other conductive metal; an electrical insulation covering 4 of, for example, plastics material about 0.5 mm thick which is mounted on the outer surface and both lateral edge portions of the cylindrical sleeve 2; and a conical wedge 3 made of the same material as that of the sleeve 2 and having a maximum diameter substantially equal to the inner diameter of the sleeve 2 and a length slightly (for example, 2 to 3 mm) shorter than that of the sleeve 2. The peripheral surface of the conical wedge 3 is provided with a plurality of annular ridges 3a having a triangular cross section. First, the conical wedge 3 is drawn out of the sleeve 2, and then the joinable end portions 5a of the core wires 5 of a telecommunication cable are inserted into the sleeve 2. When the conical wedge 3 is forcefully pushed into the sleeve 2, the annular ridges 3a of the wedge 3 break away an electrical insulation layer on the joinable end portions 5a of the core wires 5 and bite into the underlying conductors, thereby firmly joining the end portions 5a electrically as well as mechanically. 
     A magazine 6 comprises a thin flexible connector belt 7 formed of plastics material, metal, paper or a laminate thereof or any other flexible material and a plurality of hollow cylindrical connector containers 8 spatially arranged lengthwise of the connector belt 7 and each extending at right angles to the lengthwise direction of the belt 7. Each connector container 8 is made of a wall thinner than the connector belt 7 so as to be readily deformed when depressed from above, thereby allowing the connector 1 received therein to be forced out of an opening 9 formed at the bottom of the container 8. A plurality of perforations 10 are bored in both lateral edge portions of the connector belt 7 to cause the magazine 6 to be intermittently carried forward through a prescribed distance. The magazine 6 eliminates the inconvenience of manually handling small connectors one by one and also the possibility of any of the connectors being lost during the core wire-connecting operation. 
     A device according to this invention for connecting the core wires of a telecommunication cable automatically carries out, as described below, the steps of taking connectors one after another out of the magazine 6; removing the conical wedge 3 from the sleeve 2 of the connector 1; drawing the joinable end portions 5a of two or more wires 5 into the sleeve 2 with the tips of the end portions set in a line; forcefully pushing the conical wedge 3 into the sleeve 2; and pulling the joined end portions 5a of the core wires 5 out of the connecting device. 
     FIGS. 5 to 33 illustrate a core wire-connecting device according to an embodiment of this invention. This device comprises a rotor 15 (FIGS. 6, 25 to 29) provided with front receptacles 69 (FIGS. 25, 27, 29) for receiving the connectors 1 and rear receptacles 72 (FIGS. 27, 28) for receiving the conical wedges 3 removed from the sleeves 2; a rotation unit 78 (FIGS. 6, 20 to 23) for supporting the joinable end portions 5a of plural core wires 5 which are properly pulled to have the tips set in a line and moving the end portions together with the rotor 15 in its circumferential direction; a wedge-removing member 107 (FIGS. 7, 18, 24) for releasing the conical wedge 3 from the sleeve 2; a core cutting-off mechanism 94 (FIG. 25) for cutting off the unnecessary tips of the joined end portions 5a of core wires 5; a coreholding unit 92 (FIGS. 21, 22) for immovably supporting the joined end portions 5a of core wires 5 at the time of the above-mentioned cutting; a wedge-inserted member 112 (FIGS. 6, 7, 24, 30, 31) for forcefully pushing the conical wedge 3 into the sleeve 2; a core-bending unit 109 (FIGS. 24, 27, 30, 31) for pulling the joinable end portions 5a of core wires 5 toward the center of the rotor 15 in the sleeve 2 and bending those parts of the end portions 5a which extend outside of the sleeve 2 toward the rotor center in a radial direction; and a connector-feeding mechanism 67 (FIG. 18) for shifting the magazine 6 to insert the connectors 1 one after another into each front receptacle 69 (FIGS. 17, 18, 24, 25, 27, 29). 
     A fixed housing 11 comprises, as shown in FIGS. 5 and 6, legs 11a and a handle 11b. In the housing 11, the main shaft 12 is supported horizontally and rotatably by means of bearings 14 on the front plate 11c and that part of the inner wall 11d of the housing 11 which is positioned near a rear plate 13. The rotor 15 is mounted on the main shaft 12 so as to move in its axial direction and rotate with the main shaft 12 (FIG. 6). 
     Reverting to FIG. 6, an electric motor 16 is set on the base plate 11e of the housing 11 and driven by current introduced through an electric wire 17 (FIG. 5) extending outside of the housing 11. The rotation of the electric motor 16 is transmitted to its output shaft 18a through a reduction unit 18. A gear 18b fixed on the output shaft 18a engages a gear portion 19a constituting an outermost element of a clutch driver unit 19 of a clutch mechanism 22. 
     Referring to FIG. 6, a drive shaft 20 extending parallel with the main shaft 12 is rotatably supported by means of bearings 21, 21a on the inner walls 11d, 11f of the housing 11. The clutch driver unit 19 is rotatably mounted on the drive shaft 20 by means of a collar 23. The clutch driver unit 19 comprises, as shown in FIGS. 9, 10, 14, 15, an outer cylindrical portion 19b and an inner cylindrical portion 19c formed integrally with the outer cylindrical portion 19b so as to surround the drive shaft 20. The outer cylindrical portion 19b has a gear provided on the outside and a plurality of first grooved engagement elements 19e formed in the inner wall equidistantly in the circumferential direction. The inner cylindrical portion 19c also has a plurality of second grooved engagement elements 19d formed in the inner wall equidistantly in the circumferential direction. 
     As best shown in FIGS. 14 and 15, a clutch follower unit 24 is a rod-like or thick board-like member fitted into a diametrically elongate hole 20a formed in the drive shaft 20. The rounded front end 24a of the clutch follower unit 24 is normally urged by a helical compression spring 25 so as to project from the deep hole 20a to the outside of the drive shaft 20 in a radial direction. 
     Referring to FIGS. 6 and 10, an electromagnet 26 is mounted on the base plate 11e of the housing 11. An operation rod 26b extending upward through the coil 26a of the electromagnet 26 is shaped like a cylinder, the lower end portion of which has a larger diameter than the remaining portion. The operation rod 26b extends above the supporting member 27 through guide holes 27a, 27b formed in the upper and lower parts of a supporting member 27 fixed on the side wall 11g of the housing 11 and is normally urged upward by an extension spring 28 (FIGS. 14, 15). A manually operative lever 29 is pivoted, as shown in FIGS. 14 and 15, to the supporting member 27 by means of a pin 30 to be operated by an operator&#39;s finger put into the connecting device from the outside through a window 11h formed in the side wall 11g of the housing 11. The front end 29a of the manually operative lever 29 passes through the hole 26c of an operation rod 26b and normally abuts against the lower wall of the hole 26c. When the operation rod 26b is depressed, the front end 29a is brought downward, as shown in FIG. 15, by the upper wall of the hole 26c. 
     Referring to FIG. 14, a stop member 31 disposed between the driving shaft 20 and operation rod 26b has an arm 31c which extends into a depression or hole 26d formed in the operation rod 26b and is pivoted thereto by means of a pin 32. A push rod 34 is fitted into a cylindrical hole 27c formed in that part of the supporting member 27 which is positioned above the stop member 31. The push rod 34 normally depressed by a helical compression spring 33 normally has its lower end pressed against the flat upper surface of the stop member 31, thereby preventing the stop member 31 from being rotated counterclockwise in FIG. 14. A cam surface 31a presenting an arcuate form in a longitudinal section is provided on the upper plane of that side of the stop member 31 which faces the driving shaft 20. Normally, the front end 24a of the clutch follower unit 24 is pressed against the cam surface 31a to be prevented from projecting out of the diametrically elongate hole 20a formed in the driving shaft 20. The stop member 31 is further provided with another cam surface 31b facing the driving shaft 20 which is upward inclined toward the left side of FIG. 14. One end portion of a control lever 35 is pivoted to a depression 20b formed in the lower part of the driving shaft 20 by means of a pin 36. 
     The other rounded end 35b of the control lever 35 is pressed against the inner peripheral wall of the first engaging element 19e or the inner surface of the outer cylindrical portion 19b of the clutch driver unit 19. The driving shaft 20 is fitted with a spring seat 37 which is disposed below the control lever 35 and extends substantially in parallel therewith. The control lever 35 is urged clockwise by a helical compression spring 38 provided between the control lever 35 and spring seat 37. The cam surface 35a of the control lever 35 which is formed near the rounded end 35b thereof with a semicircular cross section abuts against the cam surface 31b of the stop member 31. 
     When electric power is not supplied to the coil 26a of the electromagnet 26, namely, while the coil 26a remains inoperative, the operation rod 26b is pushed upward by the helical extension spring 28, and the stop member 31 causes the clutch follower unit 24 to remain inserted into the diametrically elongate hole 20a of the drive shaft 20, thereby releasing the drive shaft 20 from the clutch driver unit 19. While, as shown in the arrangement of FIG. 14, the rounded end 35b of the control lever 35 is pressed against one of the first engaging elements 19e of the clutch driver unit 19, the clutch follower unit 24 is aligned with one of the second engaged elements 19d formed on the inner peripheral wall of the inner cylindrical portion 19c of the clutch driver unit 19. In this case, the stop member 31 causes the front end 24a of the clutch follower unit 24 to be brought right ahead of the corresponding second engaging element 19d. When the clutch driver unit 19 is rotated clockwise in FIG. 14, and the rounded end 35b of the control lever 35 rides on to the inner peripheral wall of the gear portion 19a of the clutch driver unit 19, the control lever 35 is rocked clockwise, causing its cam surface 35a to push the cam surface 31b of the stop member 31. As the result, the stop member 31 is rocked clockwise to force the clutch follower unit 24 into the diametrically elongate hole 20a of the driving shaft 20, thereby preventing the front end 24a from contacting the inner peripheral wall of the inner cylindrical portion 19c of the clutch driver unit 19. While, therefore, the coil 26a of the electromagnet 26 remains inoperative, the driving shaft 20 is not rotated, even when the clutch driver unit 19 is rotated. 
     When the coil 26a of the magnetic coil 26 is supplied with power to be put into operation, the operation rod 26b is pulled downward, causing the stop member 31 to fall and be released from the front end 24a of the clutch follower unit 24. Accordingly, the clutch follower unit 24 is pushed out of the diametrically elongate hole 20a of the drive shaft 20 by the compression spring 25 to engage the second engaging element 19d as shown in FIG. 15, thereby coupling the drive shaft 20 to the clutch driver unit 19. Thus the clutch driver unit 19 is rotated with the drive shaft 20. At this time, the cam surface 31b of the stop member 31 is brought downward, causing said stop member 31 to be rocked counterclockwise in FIG. 15. The cam surface 31b which is released from the first engaging element 19e is not rocked by the rotation of the clutch driver unit 19, thereby preventing the stop member 31 from being rocked. As the result, there does not occur the possibility that the rotation of the clutch driver unit 19 ceases to be transmitted to the drive shaft 20 due to the disengagement of the front end 24a of the clutch follower unit 24 resulting from the rocking of the stop member 31. When the driving shaft 20 is rotated through an angle of, for example, 120°, power supply to the coil 26a of the electromagnet 26 is stopped, causing the operation rod 26b to be pulled up to its original position (shown in FIG. 14) by the compression spring 28, and also the stop member 31 to be lifted. On the other hand, the driving shaft 20 continues to be rotated in the state coupled to the clutch driver unit 19 by the clutch follower unit 24. When the driving shaft 20 makes one nearly full rotation, the front end 24a of the clutch follower unit 24 projecting from the driving shaft 20 abuts against the cam surface 31a of the stop member 31 and not only causes the stop member 31 to be rotated counterclockwise up to the position indicated in FIG. 14, but also is itself inserted into the diametrically elongate hole 20a of the drive shaft 20 up to the point shown in FIG. 14, with the resultant disengagement of the driving shaft 20 from the clutch driver unit 19. Accordingly, the driving shaft 20 is returned to the position shown in FIG. 14 and brought to rest there. 
     The lever 29 is intended to be manually operated when the operation rod 26b is not brought back to the original position, for example, by a failure. 
     Referring to FIG. 6, a cylindrical cam 39, the outer peripheral surface of which is provided with an endless groove 39a, is securely mounted on the drive shaft 20 to be rotated therewith. The cam groove 39a is provided with a roller 40, which is fixed to a driving member 41 supported on the main shaft 12 so as to allow the driving member 41 to reciprocate along the main shaft 12. When the driving shaft 20 makes one rotation, the driving member 41 makes one reciprocation cycle along the mainshaft 12. Referring to FIGS. 11, 6 and 7, the rotation of the driving shaft 20 is transmitted to the main shaft 12 by means of an intermittent rotation mechanism 42, which consists of a Geneva mechanism making a one-third rotation each time. A driving wheel 43 comprising a disc follower 43b and a pin 43a provided thereon is concentrically fixed to the driving shaft 20. A driven wheel 44 having three grooves 44a extending radially and arranged equidistantly in a circumferential direction is concentrically fixed to the main shaft 12. The pin 43a is not engaged with any of the three grooves 44a, until the driving shaft 20 makes a substantially 300° rotation, but is engaged with one of the three grooves 44a when the driving shaft 20 begins to be rotated through the remaining angle of about 60°, causing the main shaft 12 to be rotated together with the driven wheel 44. 
     The driving shaft 20 has a gear 45 provided, as shown in FIGS. 6 and 8, between the clutch driver unit 19 and cylindrical cam 39, the gear 45 being engaged with a gear 46 rotatably supported on the main shaft 12. These gears 45, 46 have a gear ratio of 1:1. A helical compression spring 47 is positioned between the inner wall 11i of the substantially central part of the housing 11 and gear 46 (FIG. 6). A sector-shaped cam 48, the circumferential cross section of which presents a trapezoidal form, is formed on that side of the gear 46 which is opposite to the inner wall 11i of the housing 11 (FIGS. 6 to 9). Referring to FIG. 8, a shaft 49 is cantilevered on the inner wall 11i of the housing 11 in parallel with the main shaft 12. A gear 50 fixed to the shaft 49 is engaged with a gear 51 integral with the gear 46. These gears 50, 51 have a gear ratio of 1:1. 
     Referring to FIGS. 7 and 19, a shaft 52 supported on the rear plate 13 and the inner wall 11i of the housing 11 extends in parallel with the main shaft 12. That end portion of the shaft 52 which extends outside of the rear plate 13 is fitted with a knob 53 for manual handling (FIG. 19). The opposite end of the shaft 52 is provided with sprocket wheels 54. Referring to FIGS. 7, 8, 19, the rotation of the driving shaft 20 is transmitted to the shaft 49 through the gears 45, 46, 51, 50 in turn. The rotation of the shaft 49 is transmitted to the shaft 52 through an intermittent rotation mechanism 55 and clutch 56 (FIG. 7). As best shown in FIG. 8, the intermittent rotation mechanism 55 consists of a Geneva mechanism. Namely, a driving wheel 57 formed of a disc 57b provided with a pin 57a is fixed to the shaft 49. A driven wheel 58 formed of a disc 58b provided with depressions or teeth 58a equidistantly arranged on the outer periphery is rotatably supported on the shaft 52 (FIGS. 8, 19). The pin 57a is engaged with one of the depressions 58a while the driving shaft 20 makes a rotation through an angle of about 240° as later described. Referring to FIG. 19, a clutchdriving element 56a integrally formed with the driven wheel 58 is engaged with a driven part 56b formed of a sleeve which is rotated with the shaft 52 and fitted thereinto so as to move in the axial direction of the shaft 52. The shaft 52 is rotated through an angle corresponding to the interval of the respective depressions 58a, each time the gear 50 makes one full rotation. The housing 11 is provided inside with a lever 59 (FIGS. 5, 19) for manual operation so as to be accessible through a window 11k formed in the lateral wall 11j of the housing 11. If necessary, the lever 59 is rocked about a pin 60 fixed to the lateral wall 11j, counterclockwise in FIG. 19, causing the driven part 56b to be moved leftward along the shaft 52 against the force of a helical compression spring 61, thereby disengaging the driving part 56a from the driven part 56b to rotate the shaft 52 manually by gripping the knob 53, for the adjustment of the rotating angle of the shaft 52. The shaft 52 is rotated by a positioning mechanism 62 each time exactly through a prescribed angle, namely, an angle defined by an interval between the respective depressions 58a. This positioning mechanism 62 comprises a helical compression spring 62c inserted into a vertical hole 62b formed in a supporting block 62a fixed to the lateral wall 11j of the housing 11; a ball 62d made to project above the hole 62b by the compression spring 62c; and a disc 62f secured to the shaft 52 and provided with depressions 62e arranged equidistantly in a circumferential direction on the outer periphery. The shaft 52 is prevented from overrun since the ball 62d is inserted into the depression 62e which is brought to such a position as faces the ball 62d. 
     Referring to FIG. 7, an L-shaped lever 63 is used as a connector-disengaging member. The bent portion of the L-shaped lever 63 is rotatably supported by a pivotal shaft 64 on a bracket 11l fixed to the lateral wall 11j of the housing 11. A roller 63a mounted on one end of the L-shaped connector-disengaging member 63 engages the sector-like cam 48. A helical compression spring 66 is disposed between that part of the connector-disengaging member 63 which extends in parallel with the shaft 52 and a guide plate 65a facing the sprockets 54. The compression spring 66 urges the connector-disengaging member 63 clockwise in FIG. 7, causing the roller 63a of the disengaging member 63 to be normally pressed against that plane of the gear 46 on which the cam 48 is formed. A connector-disengaging element 63b is connected to the other end of the connector-disengaging member 63 by means of a pin 63c. The shafts 49, 52, intermittent rotation mechanism 55, clutch 56, cam 48, connector-disengaging member 63, sprocket 54 and guide plates 65a, 65b, 65c  collectively constitute a connector-feeding mechanism 67. 
     Referring to FIG. 17, the magazine 6 is inserted into the housing 11 by passing through the upper portion of an opening 11m formed in the lateral wall 11j of the housing 11 and along a guide member 65c provided at the upper portion of the opening 11m. While the magazine 6 is conducted through the housing 11, the perforations 10 of the magazine 6 are engaged with the pins 54a of the sprocket 54. Thereafter, the magazine 6 passes in turn along the guide plate 65a provided between the sprockets 54 and the lateral side of the later described movable housing 71, and the guide plate 65b extending from the guide plate 65a to the lower portion of the opening 11m and is taken out of the housing 11 from below the opening 11m. The guide plate 65a is bored with a hole 70 for allowing the passage of the connector 1, the hole 70 being aligned with the front end portion 63f of the connector-disengaging element 63b. 
     When the driving shaft 20 commences rotation, the front end portion 63f of the connector-disengaging element 63b, the hole 70 of the guide plate 65a and the front receptacle 69 of the rotor 15 are brought into alignment (FIGS. 17, 18). The sector-shaped cam 48 of the gear 46 has its outline so defined as to be disengaged from the roller 63a of the connector-disengaging member 63 while the driving shaft 20 makes a 60° rotation after commencing rotation. In FIGS. 7 and 18, a pair of guide rods 68 extend across the subject core wire-connecting device with the sprockets 54 disposed therebetween. The guide rods 68 are inserted into sleeves 63d provided at both ends of a bracket 63g fixed to the connector-disengaging element 63b, enabling the element 63b to reciprocate without crosswise shaking. 
     Referring to FIGS. 7, 17 and 18, as the rotation of the driving shaft 20 goes on, the roller 63a of the connector-disengaging member 63 is brought on to the cam 48, causing the connector-disengaging member 63 to rock about the pivotal shaft 64 counterclockwise in FIG. 7 against the force of the compression spring 66. As the result, the connector-disengaging element 63b advances toward the hole 70 to bring the front end portion 63f of the element 63b in front of the hole 70. At this time, the connector container 8 provided on the magazine 6 and facing the hole 70 is deformed under the pressure applied by the front end portion 63f, allowing the connector 1 received in the container 8 to be forced through the hole 70 into the front receptacle 69 formed in the rotor 15 and facing the hole 70. The circumferential position of the later described movable housing 71 where the connector feeding mechanism furnishes the rotor 15 with the connector 1 is referred to as a &#34;first station&#34;. When the roller 63a of the connector-disengaging member 63 is disengaged from the cam 48 before the driving shaft 20 completes a 60° rotation, the connector-disengaging member 63 is rocked clockwise to regain its original position, and in consequence, the connector-disengaging element 63b is brought back to its original position. When the connector-disengaging element 63b is carried forward and yet the corresponding connector container 8 is not brought into alignment with the front end portion 63f of the connector-disengaging member 63, the front end portion 63f does not push the connector container 8, but that portion of the connector belt 7 which lies between the adjacent connector containers 8. Since, however, the gear 46 is provided with the sector-shaped cam 48 is elastically supported, as shown in FIG. 6, by the compression spring 47, the cam 48, together with the gear 46, is carried to the right hand on the main shaft 12 by the resilient force of the flexible connector belt 7. If, therefore, the abovementioned intervening portion of the flexible connector belt 7 between the adjacent connector containers 8 is pushed by the front end portion 63f of the connector-disengaging element 63b, the intervening portion is little likely to be broken. Occurrence of such undesirable event can be avoided by counterclockwise rocking the lever 59 shown in FIG. 19 to separate the driving and driven parts 56a, 56b from each other, manually operating the knob 53 to rotate the shaft 52 and aligning the corresponding connector container 8 with the front end portion 63f of the connector-disengaging element 63b. 
     Referring to FIGS. 8 and 9, while the driving shaft 20 makes a 60° rotation, the pin 57a of the gear 50 is not brought into engagement with the depression 58a of the driven wheel 58, thereby preventing the rotation of the shaft 52. When the driving shaft 20 is further rotated beyond 60°, the pin 57a of the gear 50 engages the depression 58a of the driven wheel 58, causing the wheel 58 to rotate through an angle corresponding to an interval between the adjacent depressions 58a. As the result, the sprockets 54 are rotated by means of the shaft 52 through an angle which is chosen to cause a connector container 8 following an emptied container to be aligned with the front end portion 63f of the connector-disengaging element 63b. 
     Referring to FIG. 24, the outer periphery of the rotor 15 (FIG. 6) mounted on the main shaft 12 so as to be received in the movable housing 71 is provided with three grooved front receptacles 69 which extend in parallel with the main shaft 12 and are arranged equidistantly in a circumferential direction, namely, with a phase angle difference of 120° (FIG. 25), and also with three grooved back receptacles 72 which extend rearward of the front receptacles 69 in alignment therewith with the annular groove 15a at the substantial center of the rotor 15 interposed between both groups of receptacles (FIG. 23). 
     Referring to FIGS. 5 and 12, both end portions of the front plate 11c of the housing 11 are covered with front covers 73 between which a generally vertical passage 74 is defined. Formed in the front plate 11c is another generally vertical passage 75 in alignment with the passage 74. The top plate 11n of the housing has a groove 76 which communicates with the vertical passages 74, 75 and extends to an opening 11o formed in the lateral wall 11g of the housing 11. The movable housing 71 is provided with a passage 77 communicating with the groove 76 (FIGS. 7, 24, 25, 26). 
     Referring to FIGS. 21 and 22, a circular opening 11p formed in the outer wall of the front plate 11c of the housing 11 receives a rotation unit 78. This rotation unit 78 comprises three depressions 78b which are formed on the peripheral edge of a generally triangular plate member 78a at the same phase angle as the front and rear receptacles 69, 72 and are equidistantly arranged in the circumferential direction. 
     Referring to FIG. 5, a pair of or a several number of joinable core wires 5 of a telecommunication cable are supported by the hands of the operator on a core-holding mechanism 79 positioned in front of the housing 11. This core-holding mechanism 79 comprises a pair of arms 80a, 81a projecting ahead of the front plate 11c of the housing 11; C-shaped holding members 80b, 81b extending upward from the ends of the arms 80a, 81a; core-restricting members 82, 83 rotatably fitted to the holding member 80b by means of pins 82a, 83a; and a holding member 84 formed of a leaf spring. When the core wires 5 are forced from above into an interspace between the holding members 80b, 81b, the holding member 84 is drawn near the holding member 80b, and the core-restricting member 82 is rotated downward against the force of the corresponding extension spring 82b, causing the core wires 5 to be held in a space 85 defined by the holding member 81b, holding member 84, and core-restricting members 82, 83. 
     When the joinable end portions 5a of, for example, two cores of a telecommunication cable are fully connected and pulled downward, the core-restricting member 83 is rotated downward against the force of the corresponding extension spring 83b, allowing the connecting core wires 5 to be removed from the space 85. 
     The core wires which are to be connected are fed to the subject core wire-connecting device through the undermentioned steps. For convenience, the following description relates to two core wires. The joinable end portions 5a of the two core wires 5, each belonging to the respective counterpart cables, which are held by the core-holding mechanism 79 are set in parallel by the hands of the operator. The two joinable end portions 5a of the two cores 5 are inserted into the housing 11 from above, after passing through the passages 74, 75, groove 76 and the opening 11o of the housing 11. Those parts of the joinable end portions 5a which protrude from the groove 76 at this time are bent, as shown in FIG. 12, toward the outside of the housing 11 within the opening 11o. After brought downward while kept in a horizontal position, the joinable end portions 5a are made to be inserted into one of the depressions 78b of the rotation unit 78 and the passage 77 of the movable housing 71. 
     Referring to FIGS. 21 and 22, a core-end restricting mechanism 86 is provided between the front plate 11c of the housing 11 and the front cover 73 to prevent the core wires 5 from being thrown upward. This core-end restricting mechanism 86 comprises a plate-like restriction element 86a disposed between the passages 74, 75 and rotatably pivoted to the outer wall of the front plate 11c of the housing 11 by means of a pin 86b and a helical compression spring 86d received in a cylindrical hole 86c formed in the front plate 11c so as to urge the restricting element 86a towards the plate member 78a. The joinable end portions 5a of the two core wires 5 are inserted into the depression 78b of the rotation unit 78 by rotating the restricting element 86a counterclockwise in FIG. 21 against the force of the compression spring 86d. After passage of the joinable end portions 5a, the restricting element 86a regains its original position by the force of the compression spring 86d, thereby defining, as shown in FIG. 21, a closed space 78c for holding the joinable end portions 5a in cooperation with the plate member 78a. Therefore, even when tending to float out of the depression 78b of the rotation unit 78 due to the original bending propensity of the core wires 5 or the forced bending thereof, the joinable end portions 5a are prevented from floating outward and are securely kept within the closed space 78c. 
     Referring to FIG. 13, a wire-guiding element 11q projects above the top plate 11n of the housing 11 and faces the opening 11o thereof. The inner edge of the wire-guiding element 11q facing the groove 76 and the inner edge of the lateral wall 11g of the housing 11 which is positioned immediately below the wire-guiding element 11q jointly define a wire-guiding edge 11r for the joinable end portions 5a. The joinable end portions 5a brought downward along the wire-guiding edge 11r cause the lower end of a lever 87b to be rotated counterclockwise about a pin 87a against the force of a leaf spring 87c. The rotation of the lever 87b actuates a starting switch 87 received in a depression formed in the lateral wall 11g of the housing 11. 
     Referring to FIG. 14, actuation of the starting switch 87 causes power to be supplied to the coil 26a of the electromagnet 26. As the result, the clutch 22 transmits the rotation of the output shaft 18a to the driving shaft 20 for its full rotation. While the driving shaft 20 makes an initial 60° rotation, the joinable end portions 5a of the two cores 5 are cut off in the later described manner and a connector 1 is delivered to the front receptacle 69 which is positioned to face the hole 70 of the guide plate 65a, that is, at the first station. During this time, the rotor 15 is prevented from rotation. 
     Referring to FIGS. 20 and 21, a gear 88 (FIG. 6) fixed to the front end of the driving shaft 20 is engaged with a gear 90 fixed to a shaft 89 (FIG. 21) extending in parallel with the driving shaft 20 and supported by the front plate 11c and inner wall 11i of the housing 11. Both shafts 20, 89 are rotated at the same speed. A cam 91 mounted on the shaft 89 actuates, as later described, a core-holding unit 92 (FIG. 22), which comprises a fixed holding element 92a and a movable holding element 92b both of rubber-like elastic material which face each other across the vertical passage 75 formed in the front plate 11c of the housing 11 at that second station of the movable housing 71 which is circumferentially separated through 120° from the first station thereof in the rotation direction of the rotor 15 such that the forward extension of the front receptacle 69 at the second station passes between the elements 92a and 92b. Referring to FIGS. 22 and 23, the movable holding element 92b  is fixed to the end of a round rod member 92c extending in the advancing direction of the movable holding element 92b. This rod member 92c is inserted into a guide hole 92e bored in a holding block 92d received in a depression 11s provided in the front plate 11c of the housing 11. The intermediate portion of a lever 92f is pivotally supported on the front plate 11c by means of a pin 92q fixed to the housing 11. A roller 92h provided on the lower end of said lever 92f is pressed against the periphery of the cam 91 mounted on the shaft 89. The upper end 92i of the lever 92f abuts against a pin 92j projecting from the holding block 92d. A helical compression spring 92k received in the depression 11s formed in the front plate 11c of the housing 11 urges the holding block 92d to the right in FIG. 22 so as to remove the movable holding element 92b from the fixed holding element 92a and also normally press the roller 92h to the periphery of the cam 91. When the shaft 89 is rotated by the rotation of the driving shaft 20, the roller 92h is brought on to the surface of the larger diameter periphery of the cam 91. As the result, the lever 92f is rotated about the pin 92g counterclockwise in FIGS. 21 and 22 to push the pin 92j to the left. The pin 92j is brought into a horizontal elongate hole 11u (FIG. 21) formed in a front plate 11t covering the depression 11s to shift the holding block 92d to the left against the force of the helical compression spring 92k. As the result, the rod member 92c is moved to the left against the force of a helical compression spring 92l disposed between the movable holding element 92b and holding block 92d, while being guided by a pin 92m fitted into an elongate hole 92n bored in the rod member 92c. The fixed holding element 92a and movable holding element 92b tightly clamp the joinable end portions 5a of the core wires 5 now placed in the depression 78b by being held by the core end restricting mechanism 86. 
     Referring to FIG. 25, the shaft 89 is provided with another cam 93 for actuating a core cutting-off mechanism 94, which comprises a fixed cutter 94a and movable cutter 94b mounted on the front surface of the movable housing 71 in a mutually facing relationship across the passage 77. As shown in FIGS. 24 and 25, the fixed cutter 94a is disposed at an inlet to the passage 77 ahead of the front receptacle 69 of the rotor 15. The movable cutter 94b is received in a guide groove 95a formed in the front cover 95 of the movable housing 71. A lever 94c is rotatably supported on the front cover 95 by means of a pin 94d. A forked section 94f provided at the upper end of the lever 94c receives the pin 94g of the movable cutter 94b. A helical compression spring 94h disposed between the movable housing 71 and lever 94c actuates the lever 94c, such that when the movable housing 71 is pushed back, the movable cutter 94b is urged to be removed from the fixed cutter 94a and a roller 94e mounted on the lower end of the lever 94c is pressed against the periphery of the cam 93. The joinable end portions 5a of the core wires 5 are partly cut off at the same point by the following process. When the core-holding unit 92 is operated to set the joinable end portions 5a of the core wires 5 in place, the rotating cam 93 causes the lever 94c to be rotated about the pin 94d counterclockwise in FIG. 25 against the force of the compression spring 94h. As the result, the forked section 94f of the lever 94c pushes the pin 94g to the left by means of a leaf spring 94i. The movable cutter 94b is advanced to push the joinable end portions 5a of the cores 5 to the left until the blades of the cutters 94a and 94b overlap each other, thereby cutting off the joinable end portions 5a of the core wires 5 at the same point. Upon completion of the cutting, the movable cutter 94b is further moved to push leftward the joinable end portions 5a now cut off at the same point so as to be pressed against the arcuately depressed end 96c of a core stop 96 projecting ahead of the front receptacle 69. The cut-off unnecessary parts of the joinable end portions 5a of the core wires 5 are manually removed by the operator from the housing 11 through the passage 77 and opening 11o. 
     The core stop 96 is inserted into a guide groove 95b formed in the front cover 95 so as to slide horizontally therethrough, and is urged to the right in FIG. 25 by a helical compression spring 96b disposed between the core stop 96 and front cover 95. At least before the movable housing 71 commences advance after the cutting-off of the joinable end portions 5a (corresponding to the period in which the driving shaft 20 makes a first 60° rotation), the core stop 96 takes such a position that the arcuately depressed end 96c of the core stop 96 is aligned with the inner wall of the sleeve 2 provided in the front receptacle 69 positioned at the back of the fixed cutter 94a, thereby enabling the joinable end portions 5a of the core wires to be reliably inserted into the sleeve 2 as later described. Formed in the underside of the core step 96 is an engaging groove 96a with which there is engaged the upper end of a lever 101b the center of which is pivotally supported by the front cover 95 and movable housing 71 by means of a pin 101a. Referring to FIGS. 20, 21, 6 and 7, a gear 98 mounted on a shaft 97 supported by the front plate 11c and inner wall 11i of the housing 11 and extending in parallel with the driving shaft 20 is engaged with a gear 99 fixed to the driving shaft 20. Referring again to FIG. 25, the lower end of the lever 101b is pressed against the periphery of a cam 100 mounted on the shaft 97 by means of the compression spring 96b. When the lever 101b is rocked counterclockwise in FIG. 25 about the pin 101a upon the rotation of the cam 100, the core stop 96 is carried to the left against the force of the compression spring 96b, causing the arcuately depressed end 96c of the core stop 96 to be shifted to a point at which the end 96c is prevented from being superposed in the front receptacle 69, thereby eliminating the possibility that when the movable housing 71 is carried forward, the insertion of the joinable end portions 5a of the core wires 5 is obstructed by the arcuately depressed end 96c of the core stop 96. 
     The process extending from the step of cutting off the joinable end portions 5a of the core wires 5 to the step of pressing the joinable end portion 5a against the arcuately depressed end 96c of the core step is effected during a first rotation of the driving shaft 20 through an angle of about 60°. During the following rotation of the driving shaft 20 through an angle of about 240°, two steps are carried out. In the first step, the conical wedge 3 is forced out of the sleeve 2 of the connector 1 received in the front receptacle 69 at the first station of the movable housing 71 into the rear receptacle 72 disposed behind the front receptacle 69. In the second step, the joinable end portions 5a of the core wires 5 received in the front receptacle 69 at the second station of the movable housing 71 are inserted into the sleeve 2, and thereafter the conical wedge 3 received in the rear receptacle 72 is forced into the sleeve 2 to connect the joinable end portions 5a of the core wires 5. 
     There will now be described the operation of the movable housing 71 closely related to the above-mentioned two steps. Referring to FIGS. 6, 7, 24, when the driving shaft 20 commences a 240° rotation, the driving member 41 fitted in the cam groove 39a is moved along the main shaft 12 toward the front plate 11c of the housing 11. The free end of a first guiding rod 103 (FIGS. 7, 24) extending from the rear cover 102 of the movable housing 71 in parallel with the main shaft 12 reaches the long hole 41a of the driving member 41 (FIG. 7). A second guiding rod 104 extending from the driving member 41 in parallel with the main shaft 12 passes into the hole 71c of the movable housing 71 through the hole 102a of the rear cover 102 (FIG. 24). The head 104a of the free end of the second guiding rod 104 engages the stepped portion 71b of the hole 71c of the movable housing 71. Two helical compression springs 105, 105a wound about the two guiding rods 103, 104 respectively are provided between the rear cover 102 and driving member 41. As shown in FIG. 28, the movable housing 71 is supported on a pair of horizontal rails 106 laid in the housing 11, and can be moved along them by the driving member 41 with the aid of the compression springs 105, 105a up to a point at which the front cover 95 touches the front plate 11c of the housing 11. The wedge-removing member 107 projects rearward of the front plate 11c in parallel with the main shaft 12 in alignment with the front receptacle 69 at the first station of the movable housing 71 (FIGS. 7, 18, 24). A hole 95c is formed in the part of the front cover 95 which lies ahead of the front receptacle 69 positioned at the first station of the movable housing 71 and containing the connector 1 (FIGS. 18, 25). When the movable housing 71 is carried to extremely forward end, the wedge-removing member 107 passes through the hole 95c into the sleeve 2 of the connector 1, thereby forcing out the conical wedge 3 through the hole 71d (FIG. 26) of the movable housing 71 into the rear receptacle 72 lying behind the hole 71d (FIG. 27). 
     The sleeve 2 and conical wedge 3 are received in a separated state attained by the above-mentioned operation in the corresponding ones of the front and rear receptacles 69, 72, which, at the second station of the movable housing 71, respectively occupy a phase position 120° shifted in the rotating direction of the rotor 15 from each point at which the conical wedge 3 is removed from the sleeve 2. The cutting of the joinable end portions 5a of the core wires 5 is carried out ahead of the front receptacle 69 set at the second station. The joinable end portions 5a cut off at the same point are placed in front of the front receptacle 69. As shown in FIG. 29, a sleeve-fixing unit 108 comprises an arm member 108c pivotally supported on the movable housing 71 by means of a pin 108a and a helical compression spring 108b disposed between the arm member 108c and movable housing 71 to urge the arm member 108C toward the rotor 15. The annular groove 15b dividing the front receptacles 69 into two front and rear groups is formed in the outer peripheral surface of the rotor 15. At the second station of the movable housing 71 the upper end of the arm member 108c is inserted into the annular groove 15b by the force of the compression spring 108b. Under this arrangement, the sleeve 2 is securely held in the front receptacle 69 by means of the arm 108c at the second station. When as later described, the rotor 15 is shifted from the first to the second station, the sleeve 2 pushes the arm member 108c for engagement therewith against the force of the compression spring 108b. Referring to FIG. 27, as the movable housing 71 is drawn nearer to the front plate 11c of the housing 11, the joinable end portions 5a of the core wires 5 cut off at the same point are further brought into the sleeve 2 and then carried through the die 113 of the core bending unit 109 received in the annular groove 15a. The die 113 will be later described in greater detail. 
     Referring to FIG. 28, the movable housing 71 is provided with a conical wedge-detecting unit 110 comprising a lever 110a and limit switch 110b. This detecting unit 110 is actuated when the conical wedge 3 is not received in the connector 1 and also when the wedge 3 is held in the sleeve 2 in a reversed position. The upper end of the lever 110a is supported on the movable housing 71 by means of a pin 110c. An arm portion 110d extending obliquely downward is fitted into a shallow annular groove 15c formed in the peripheral surface of the rear part of the rotor 15 so as to cross the rear half section of each rear receptacle 72. The lever 110a is made by its own weight to rotate in the direction in which it is fitted into the annular groove 15c. The lower end 110e of the lever 110a faces the limit switch 110b mounted on the inner wall of the housing 11. When the conical wedge 3 is placed in the sleeve 2 in the proper direction, the larger diameter section of the conical wedge 3 inserted into the rear receptacle 72 by means of the wedge-removing member 107 pushes up the arm portion 110d of the lever 110a. As the result, the lever 110a is rotated clockwise through a relatively large angle about the pin ll0c, causing the lower end 110e of the lever 110a to abut against the limit switch 110b. When the limit switch 110b is actuated by said abutment, the conical wedge 3 is detected to have a proper position in the rear receptacle 72. When the conical wedge 3 is not received in the rear receptacle 72 or when the wedge 3 is placed therein in a reversed position, the lever 110a is not moved or rotated to a relatively small extent. Accordingly, the lower end 110a of the lever 110a does not strike against the limit switch 110b, preventing it from being actuated. At this time, the power source of the subject core wire-connecting device is shut off or an alarm is given. 
     Referring to FIGS. 5, 6 and 7, when the front cover 95 of the movable housing 71 is pressed against the front plate 11c of the housing 11, the driving member 41 is drawn near the movable housing 71 against the force of the compression springs 105, 105a. The forward end of the driving member 41 is provided with that rod-like cam 111 for operating the core bending unit 109 which extends in parallel with the main shaft 12 and also with a wedge-inserting round rod member 112 for forcing the conical wedge 3 into the sleeve 2 during the first station of the movable housing 71 (FIG. 27). 
     Referring to FIGS. 27, 30 and 33, the core-bending unit 109 comprises a die 113 bored with a hole 113a which is brought into alignment with the front receptacle 69 at the second station of the movable housing 71 and a bending member 114 disposed behind the die 113 to slide vertically along the bending member 114. The inclined end surface 111a of the cam 111 which has passed through a hole 102b of the rear cover 102 into the movable housing 71 abuts against a roller 114a rotatably supported on the upper end portion of the bending member 114, thereby bringing down the bending member 114 against the force of a helical compression spring 114b (FIG. 26) disposed between the movable housing 71 and bending member 114. Referring to FIGS. 27, 30 and 31, the underside of the bending member 114 is formed into a forwardrising inclined plane 114c. As the bending member 114 falls further downward, the joinable end portions 5a of the core wires 5 are pushed downward to be bent obliquely downward from a circular cutting edge 113c defined, as shown in FIG. 30, by the inner wall of the hole 113a of the die 113 and a conical surface 113b of the die 113 which has its center displaced from the center of the hole 113a toward the axis of the rotor 15 and has a maximum outer diameter larger than the diameter of the hole 113a. When a radial hole 114d formed in the bending member 114, hole 113a and sleeve 2 are all brought into alignment, those parts of the joinable end portions 5a of the core wires 5 which are bent downward from the circular cutting edge 113c are tightly clamped between planes 113b, 114c. 
     Upon completion of the above-mentioned process, the wedge-inserting member 112 is carried through a hole 102c of the rear cover 102 into the rear receptacle 72 now receiving the conical wedge 3 at the second station of the movable housing 71 (FIG. 24), thereby forcefully inserting the conical wedge 3 through the holes 114d, 113a into the sleeve 2 received in the front receptacle 69 at the second station of the movable housing 71 (FIG. 31). Referring to FIGS. 30 and 31, a chamfered portion 112a is formed on the greater part of the forward end face of the wedge-inserting member 112. The remaining lower part of the end face is provided with a cutting blade 112b. The circular cutting edge 113c and cutting blade 112b cooperate in cutting off those unnecessary parts of the joinable end portions 5a of the core wires 5 which extend behind the cutting blade 113c. The hole 113a and conical surface 113b of the die 113 are eccentrically arranged relative to each other as mentioned above. When, therefore, the wedge-inserting member 112 is set at a point at which the cutting blade 112b can cut off the unnecessary parts of the joinable end portions 5a, the upper side of the forward end of the wedge-inserting member 112 is restricted by the upper wall of the hole 113a of the die 113 and is prevented from escaping upward, thereby effecting the reliable cutting-off of the unnecessary parts of the joinable end portions 5a of the core wires 5. When the wedge-inserting member 112 forces the conical wedge 3 into the sleeve 2, those parts of the joinable end portions 5a now received in the hole 113a of the die 113 are slightly pushed backward together with the conical edge 3 to be fully inserted into the sleeve 2. At this point, the sharp annular ridges 3a formed on the peripheral surface of the conical wedge 3 break through the insulation layer of the joinable end portions 5a of the core wires 5 and bite into the underlying core wires 5, thereby firmly connect together the joinable end portions 5a electrically as well as physically. 
     When the conical wedge 3 is fully inserted into the sleeve 2, the driving member 41 commences retraction along the cam groove 39a, the wedge-inserting member 112 is pulled backward the holes 113a, 114d and rear receptacle 72. The cam 111 is disengaged from the roller 114a to be carried backward. The bending member 114 is brought back to its original position by the action of the compression spring 114b. When the driving member 41 commences retraction, the movable housing 71 remains pressed against the front plate 11c by the force of the compression springs l05, 105a. After, however, the head 104a of the second guiding rod 104 abuts against the stepped portion 71b of the hole 71c, the movable housing 71 is pulled backward by the driving member 41 away from the front plate 11c of the housing 11 to regain the original position. The core wires 5 which are securely set in place by the core-holding mechanism 79 are prevented from being drawn into the housing 11 while the movable housing 11 is carried backward. As the result, the connector 1 which has firmly connected the joinable end portions 5a of the core wires 5 is removed from the front receptacle 69 at the second station of the movable housing 71. Before return of the movable housing 71, the core cutting-off mechanism 94 is brought back to its original position. The core stop 96 is shifted to a point at which it is not superposed on the front receptacle 69. 
     While the driving shaft 20 makes the last rotation through an angle of about 60° the main shaft 12 is rotated 120°. As previously mentioned, the rotation of the driving shaft 20 is transmitted to the main shaft 12 by means of the intermittent rotation mechanism 42. The rotor 15 surrounded by the movable housing 71 is rotated clockwise in FIG. 25 together with the main shaft 12. The core-holding unit 92 is returned to its original position before said clockwise rotation. Referring to FIG. 25, before the rotation of the rotor 15, the connector 1 which has already connected the joinable end portions 5a of the core wires 5 and has been removed from the front receptacle 69 at the second station of the movable housing 71 is placed ahead of the front receptacle 69. The connected core wires 5 are received in the right upper depression 78b of the rotation unit 78 in FIG. 21, that is, the depression at the second station of the movable housing 71. 
     The plate member 78a of the rotation unit 78 is fixed to the main shaft 12, and, upon the 120° rotation of the rotor 15, is rotated 120° while holding the connected core wires 5 in the above-mentioned depression 78b, thereby causing the depression 78b at the second station to be turned downward. The connected core wires are carried downward through the passages 74, 75 and released from the depression 78b. When the connector 1 happens to be retained in the front receptacle 69 of the rotor 15 after the retraction of the movable housing 71, a connector take-out mechanism 115 is put into operation to remove the connector 1 from the front receptacle 69. Referring to FIG. 25, the connector take-out mechanism 115 is formed of a plate member 115a fixed to the movable housing 71 and having its edge inserted into the lower part of the annular groove 15b. When the connector 1 received in the front receptacle 69 at the second station of the movable housing 71 is moved together with the rotor 15 to a lower position which is separated 120° from the second station (this point is referred to as a &#34;third station&#34; of the movable housing 71), the connector 1 remaining in the front receptacle 69 is forcefully pushed out along an inclined surface 115b of the connector take-out mechanism 115. 
     Referring to FIG. 25, upon the rotation of the main shaft 12, the connector 1 which has been delivered to the front receptacle 69 at the first station of the movable housing 71 and in which the sleeve 2 and conical wedge 3 are separated from each other is carried to the front receptacle 69 at the second station. The front receptacle 69 which lies in the third station of the movable housing 71 and from which the connector 1 has been emptied is shifted to the first station. When the driving shaft 20 completes a 360° rotation, power supply to the coil 26a of the electromagnet 26 is cut. Therefore, the clutch mechanism 22 disengages the output shaft 18a from the driving shaft 20. 
     Referring to FIG. 7, the shaft 52 is rotated by means of the intermittent rotation mechanism 55 and clutch 56 at a proper point of time during the period in which the driving shaft 20 is being rotated through an angle of about 240°. This rotation is carried out, as previously mentioned, through an angle corresponding to an interval between the adjacent depressions 58a formed in the driven wheel 58. As the result, the sprocket 54 carries forward the magazine 6 to an extent corresponding to an interval between the adjacent connectors 1 arranged on the connector belt 7. When the connector-feeding mechanism 67 is operated, the connector 1 is delivered to the front receptacle 69 set at the first station of the movable housing 71. 
     Referring to FIG. 28, the movable housing 71 is provided with a rotor assembly-positioning mechanism 116 to define the position of the rotor 15, thereby causing the rotor 15 to be brought to rest when rotated accurately 120°. The rotor assembly-positioning mechanism 116 has such an arrangement that a helical compression spring 116b and a ball 116c urged toward the rotor 15 by the compression spring 116b are received in a hole 116a formed in the lower part of the movable housing 71, and the ball 116c projects from the hole 116a for engagement with the rear receptacle 72 at the third station of the movable housing 71. Even if the ball 116c is made to engage the front receptacle 69 at the third station, the object of properly positioning the rotor 15 can be attained all the same. 
     The operation of the subject core wire-connecting device may be summarized as follows. When a plurality of core wires constituting a telecommunication cable are inserted into the passages 74, 75, groove 76 and opening 11o all formed in the upper part of the housing 11 with the joinable end portions 5a set in parallel with each other, the joinable end portions 5a are inserted into the depression 78b of the rotation unit 78 and are securely held so as to be prevented from being displaced by means of the core endrestricting mechanism 86, causing the starting switch 87 to be actuated. As the result, the electric motor 16 and driving shaft 20 are coupled together by means of the clutch mechanism 22. While the driving shaft 20 makes a rotation through an angle of, for example, 60°, the core holding unit 92 is actuated securely to grip the core wires 5. The unnecessary parts of the joinable end portions 5a of the core wires 5 are cut off by the core cutting-off mechanism 94 at a point close to the lateral side of the rotor 15 and ahead of the front receptacle 69 at the second station. The joinable end portions 5a of the core wires 5 which are cut at the same point are placed in front of the front receptacle 69 at the second station. While the above-mentioned operation is continued, a connector 1 is delivered to the magazine 6 by means of the connector-feeding mechanism 67 to the front receptacle at the first station. While the driving shaft 20 is rotated further through an angle of, for example, 240°, the rotor 15 is moved toward the rotation unit 78. The conical wedge 3 of the connector 1 is separated from the sleeve 2 by the wedge-removing member 107 to be inserted into the rear receptacle 72 at the first station. The joinable end portions 5a of the core wires 5 are brought into the sleeve 2, and those parts of the joinable end portions 5a which extend out of the sleeve 2 are bent by the core-bending unit 109. The conical wedge 3 is forced into the sleeve 112 by the wedge-inserting member 112 as the rotor 15 is returned to its original position. While the above-mentioned operation is going on, the magazine 6 is carried forward, enabling the succeeding connector 1 to be delivered to the corresponding front receptacle 69 at the first station. While the driving shaft 20 is rotated for the last time through an angle of, for example, 60°, the main shaft 12 is rotated to turn the rotor 15 and rotation unit 78. As the result, the core wires 5 of a telecommunication cable connected by the connector 1 are taken out, and the connector 1 in which the conical wedge 3 and sleeve 2 were previously separated from each other is brought to a position where the coupling of both members is effected. When the driving shaft 20 completes one full rotation, the clutch 22 disengages the driving shaft 20 from the electric motor 16. 
     FIGS. 34 to 40 jointly set forth a modification of a core wire-connecting device according to this invention. This modification comprises a rotor 215 (FIGS. 35, 37) provided with grooved front receptacles 269 each for receiving a connector 1 and hollow cylindrical rear receptacles 272 each for receiving a conical wedge 3 removed from a sleeve 2; a rotation unit 278 (FIGS. 34, 36) for holding the joinable end portions 5a of a pair of or more core wires 5 constituting a telecommunication cable which are set in parallel and moving the joinable end portions 5a in the circumferential direction of the rotor 215; a wedge-removing member 307 (FIG. 39) for separating the conical wedge 3 from the sleeve 2; a core cutting-off mechanism 294 (FIG. 34) for cutting off the unnecessary parts of the joinable end portions 5a of the core wires 5; a wedge-inserting member 312 (FIGS. 34, 35) for forcing the conical wedge into the sleeve 2; a core-bending unit 309 (FIG. 34) for pulling the joinable end portions 5a of the core wires 5 toward one lateral wall of the sleeve 2 when the conical wedge 3 is brought into the sleeve 2; a connector-feeding mechanism 267 (FIG. 35) for carrying forward a magazine 6 to insert the connector 1 into the corresponding front receptacle 269; and a wedge-removing mechanism 317 (FIGS. 35, 39, 40) for actuating a wedge-removing member 307. 
     Referring to FIGS. 34 and 35, the above-mentioned modified device is received in a fixed housing 211 provided with the same type of legs 211a and handle 211b as in the aforesaid core wire-connecting device. In the housing 211, one end of each of two round rod-like guide members 306 which are horizontally arranged in parallel with each other is supported on a front plate 211c and the other end thereof is supported on that part of an inner wall 211d, which is disposed near a rear plate 213 (FIG. 35). A movable housing 271 is carried along the rod-like guide members 306. A hollow shaft 212a extending in parallel with the guide members 306 is rotatably supported on the movable housing 271 by means of bearings 214. The rotor 215 is fixed to that end of the hollow shaft 212a which projects toward the front plate 211c. The rotation unit 278 surrounded by the front plate 211c is of the same type as the rotation unit 78 of the previously mentioned core wire-connecting device. The central shaft 212b of the rotation unit 278 is fitted into the hollow shaft 212a to rotate therewith (FIG. 34). 
     Mounted on the base plate 211e of the housing 211 is an electric motor 216, the rotation of which is transmitted to a driving shaft 220 extending in parallel with the hollow shaft 212a through a reduction unit 218, torque limiter 318, clutch mechanism 222, and gear train 319 in turn. The clutch mechanism 222 comprises a known one-revolution type clutch. 
     The driving shaft 220 is rotatably supported on the inner walls 211d and 211f of the housing 211 by means of bearings 221 (FIG. 34). The driving shaft 220 is provided with a driving wheel 257 (FIG. 35) included in the intermittent rotation unit 255 of a connector feeding mechanism 267; a cylindrical cam 320 (FIGS. 34, 35) for actuating the wedge-removing member 307 (FIG. 39); a cylindrical cam 239 (FIG. 34) for carrying forward the movable housing 271; a grooved cam 321 (FIG. 34) for operating a wedge-inserting member 312; a cam 311 (FIG. 34) for actuating the core bending unit 309 and a cam 293 (FIG. 34) for operating the core cutting-off mechanism 294. 
     The electric motor 216 continues rotation by means of a switch (not shown), until the prescribed core-connecting operation is put to an end. 
     A pair of or more core wires constituting a telecommunication cable which are to be connected together are placed by the hands of an operator in a core-holding mechanism 279 disposed in front of the housing 211. This core-holding mechanism 279 is of the same type as shown in FIG. 1. Two joinable end portions 5a selected from among the core wires 5 are set in parallel by the operator. The two joinable end portions 5a thus arranged are passed through vertically extending passages 274, 275 (FIGS. 35, 36) formed in the front plate 211c and front cover 273 and groove 276 (FIG. 36) formed in the top plate 11n of the housing 211 to be inserted into the housing 211 from above. At this time, the joinable end portions 5a of the core wires 5 extending rearward beyond the groove 276 are bent toward an opening 211o (FIG. 35) formed in the lateral wall 211g of the housing 211. When the joinable end portions 5a are brought downward, a starting mechanism 322 (FIG. 35) provided on the lateral wall 211g  of the housing 211 is put into operation. 
     Referring to FIG. 36, the starting mechanism 322 comprises a first lever 323, second lever 324 and clutch lever 325 rotatably mounted on support shafts 323a, 324a, 325a respectively. The first lever 323 vertically extending along the lateral wall 211g of the housing 211 has its upper part provided with a reverse L-shaped arm 323b and another arm 323c which rises obliquely rearward up to the groove 276. The lower end of the first lever 323 is provided with a projection 323d engaging the second lever 324. The first lever 323 is further urged clockwise by a helical compression spring 323e and brought to rest in a state pressed against a stop 326. When the joinable end portions 5a of the core wires 5 are brought downward under the arrangement of FIG. 36, the portions 5a engages the arm 323c and rotates the arm 323c counterclockwise about the support shaft 323a against the force of the compression spring 323e. The second lever 324 is pushed to the right by the projection 323d to be rotated counterclockwise about the support shaft 324a against the force of a compression spring 324b urging the lever 324 clockwise, thereby causing a shoulder section 324c formed at the lower end of the second lever 324 to be released from the front end 325b of the clutch lever 325. The clutch lever 325 is rotated counterclockwise about the support shaft 325a by means of a compression spring 325c. As the result, a clutch-actuating arm 327 engaging a forked portion 325d formed at the rear end of the clutch lever 325 connectes together the driver unit and follower unit of the clutch mechanism 222 (FIGS. 34, 36). 
     When the unnecessary parts of the joinable end portions 5a of the core wires 5 are cut off by the core cutting-off mechanism 294 (FIG. 34), the first lever 323 now freed from the load of the core wires 5 is released, causing the first lever 323 and other levers 324, 325 to regain their original positions shown in FIG. 36 by being pulled back by the corresponding compression springs 323e, 324b, 325c. 
     The cut-off joinable end portions 5a of the core wires 5 are held by the rotation unit 278 and are set immovable by the same type of core-holding unit 292 as the core-holding unit 92 of the aforesaid core wire-connecting apparatus. 
     The driving shaft 220 makes one full rotation, that is through an angle of 360° by means of the clutch mechanism 222 (FIG. 34). While the driving shaft 220 is first rotated through an angle of, for example, 60°, the joinable end portions 5a are cut off in front of the front receptacle 269 at a second station corresponding to that of the first embodiment by the core cutting-off mechanism 294 while being supported by the core-holding unit 292. During said cutting, a connector 1 is delivered from the magazine 6 by a connector-feeding mechanism 267 to the front receptacle 269 at a first direction which is set apart 120° from the second station in a direction opposite to the rotation of the rotor 215. The core cutting-off mechanism 294 and cam 293 have the same construction and operative relationship as the core cutting-off mechanism 94 and cam 93 included in the previously described core wire-connecting device. 
     Referring to FIG. 35, the connector-feeding mechanism 267 is of the same type as the connector-feeding mechanism 67 included in the previously described core wire-connecting device and is provided with a pair of sprockets 254 engaging the magazine 6. A shaft 252 provided with the two sprockets 254 and extending in parallel with the driving shaft 220 is supported on the inner walls 211d, 211i of the housing 211. 
     A pin 257a projecting from the driving wheel 257 of the intermittent rotation mechanism 255 is engaged with one of the depressions or teeth arranged equidistantly in a circumferential direction on the peripheral surface of a driven wheel 258 mounted on the shaft 252, thereby causing the paired sprockets 254 to be rotated through a prescribed angle. A connector-disengaging member 263 is operated in the same manner as the connector-disengaging member 63 of the previously described core wire-connecting device to deliver the connector 1 received in the magazine 6 to any of the front receptacles 269 of the rotor 215. 
     The front receptacles 269 are arranged on the peripheral surface of the rotor 215 in a state spaced from each other through a phase angle of 120°. Referring to FIGS. 35, 39 and 40, the wedge-removing mechanism 317 comprises first and second levers 329, 330 (FIG. 40) rotatably mounted on a pivotal shaft 328 projectively provided on the lateral wall 211g of the housing 211; a connection rod 331 (FIG. 39) coupling the second lever 330 to the wedge-removing member 307; and a helical compression spring 332 for urging the two levers 329, 330 jointly counterclockwise in FIGS. 39 and 40. A roller 329a mounted on the free or upper end of the first lever 329 is fitted into an annular cam groove 320a formed in a cylindrical cam 320 mounted on the shaft 220. A male screw portion formed at one end of a guide rod 333 is screwed into an arm 329b provided on the lower end of the lever 329 and is tightened by means of a nut 333a. The guide rod 333 loosely passes through a horizontal hole 330b bored in an arm 330a formed at the lower end of the second lever 330 normally substantially in parallel with the arm 329b. The compression spring 332 is of a helical coil type and surrounds the guide rod 333 between a head 333b disposed at the other end of the guide rod 333 and the arm 330a. The upper end of the second lever 330 and the connection rod 331 are coupled together by a link 334. The connection rod 331 passes through a guide tube 335 set immovable relative to the housing 211 so as to be linearly carried therethrough (FIG. 39). 
     The connector 1 delivered to the front receptacle 269 is kept immovable by the same type (not shown) as the sleeve-fixing unit 108 of the previously mentioned core wire-connecting device. 
     When the cam 320 rotates the first lever 329 counterclockwise in FIGS. 39 and 40 about the shaft 328 upon the rotation of the driving shaft 220, the second lever 330 is rotated counterclockwise as is the first lever 329, because the arms 329b, 330a are pressed against each other by means of the compression spring 332, causing the connection rod 331, together with the wedge-removing member 307, to be moved to the left in FIG. 39. As the result, the wedge-removing member 307 pushes the conical wedge 3 out of the sleeve 2 to the corresponding rear receptacle 272 at the second station (FIG. 39). If the conical wedge 3 is placed reversely in the sleeve 2, the conical wedge 3 is forced out of the sleeve 2 by being pushed at the larger diameter end, applying undue resistance to the wedge-removing member 307. The force of said resistance is transmitted to the second lever 330 through the connection rod 331 and link 334 in turn. As the result, the arm 330a is removed from the arm 329b of the first lever 329 against the force of the compression spring 332. Even when the first lever 329 is rotated by the cam 320, the second lever 330 is not rotated counterclockwise due to the resistance of the conical wedge 3, and its removal from the sleeve 2 is not carried out. Namely, the conical wedge 3 is taken out of the sleeve 2 only when properly directed therein. 
     Referring to FIGS. 34, 37 and 38, a detecting unit 310 for the conical wedge 3 is provided in an annular groove 215c formed in the outer periphery of the rotor 215 between the front and rear receptacles 269, 272 so as to be disposed in front of the corresponding rear receptacle 272. As seen from FIG. 38, this wedge-detecting unit 310 comprises a lever 310a and a helical compression spring 310b, and is actuated in the case of an unacceptable connector 1 which lacks a conical wedge 3 or in which the conical wedge 3 is received in the sleeve 2 in a reversed position as viewed from FIG. 1 and can not be taken out by the wedge-removing mechanism 317. The lever 310a is pivotally supported on the movable housing 271 by means of a pin 310c, and urged counterclockwise in FIG. 38 by means of the compression spring 310b anchored to the movable housing 271 to be fitted into the annular groove 215c formed at the center of the rotor 215 as shown in a dot-dash line in FIG. 38. When the conical wedge 3 is inserted into the corresponding rear receptacle and then the rotor 215 is rotated clockwise in FIG. 38, causing the sleeve 2 and conical wedge 3 to be brought to a point where the core wires 5 are to be connected, that is, at the second station, the lever 310a is rotated clockwise by that portion of the wedge 3 which projects into the groove 215c from the rear receptacle 272 now receiving the conical wedge 3 against the force of the compression spring 310b, thereby assuming a solid line position illustrated in FIG. 38. Where the connector 1 does not contain the conical wedge 3, the lever 310a remains urged counterclockwise as indicated in a dot-dash line in FIG. 38 by the urging force of the compression spring 310b. The right end (FIG. 38) of the lever 310a is brought into alignment with the projection 323b formed on the first lever 323 of the starting mechanism 322 (FIGS. 36, 38). When, under this arrangement, the joinable end portions 5a of the core wires 5 are going to be brought downward into the housing 211, the first lever 323 is prevented from rotation due to the projection 323b abutting against the lever 310a as shown in FIG. 36. As the result, the second lever 324 and clutch lever 325 are not put into operation, preventing the driving unit and follower unit of the clutch mechanism 222 from being coupled together. The joinable end portions 5a of the core wires 5 are brought down into the housing 211 only when the connector 1 is separated into the sleeve 2 and conical wedge 3 which in turn are received in the front receptacle 269 and rear receptacle 272 respectively, thus actuating the starting mechanism 322, since the lever 310a is disengaged from the projection 323b of the first lever 323. 
     Referring to FIGS. 34 and 35, when the unnecessary parts of the joinable end portions 5a of the core wires 5 are cut off by the core cutting-off mechanism 294, and the driving shaft 220 is further rotated, a roller 240 fitted into an endless groove 239a formed in the outer peripheral surface of a cylindrical cam 239 is moved in the forward axial direction of the driving shaft 220. Therefore, the movable housing 271 to which the roller 240 is fitted is carried to the right in FIGS. 34 and 35 along the guide rod 306. The rotor 215 mounted on the hollow shaft 212a supported on the movable housing 271 is also advanced to the right, causing the joinable end portions 5a of the core wires 5 to be inserted into the sleeve 2 held in the front receptacle 269 at the second station. The forward parts of the joinable end portions 5a of the core wires 5 which have passed through the sleeve 2 are bent by the core-bending unit 309. This core-bending unit 309 has the same arrangement and function as the core-bending unit 109 previously described by reference to FIGS. 26 and 27. A driving member 241, to which the rear end of the wedge-inserting member 312 is fixed, is mounted on the hollow shaft 212a so as to move in the axial direction thereof. 
     Referring to FIG. 35, a pair of links 336, 337 are pivoted at one end thereof to the movable housing 271 and driving member 241 by means of pins 336a, 337a respectively. The two links 336, 337 are joined together at the other end thereof by means of a pin 338. An actuating lever 339 is provided adjacent to the junction of the links 336, 337. The actuating lever 339 (FIG. 35) is provided with an arm 341 (FIGS. 34, 35) engaging the groove 321a of an end cam 321 (FIG. 34) mounted on the driving shaft 220. The arm 341 is rotatably supported on the housing 211 by means of a support shaft 341a (FIG. 35). When the arm 341 is rotated by the rotation of the cam 321 and the lever 339 pushes the junction of the links 336, 337, the links 336, 337 set in a folded state as illustrated in FIG. 35 are rotated to be separated from each other, causing the driving member 241 to be carried to the right relative to the movable housing 271 along the hollow shaft 212a. As the result, the wedge-inserting member 312 is brought into the corresponding rear receptacle 272, causing the conical wedge 3 in the rear recetpacle 272 to be forced into the sleeve 2. The wedge-inserting member 312 is preferred to be of the same type as the wedge-inserting member 112 of the previously mentioned core wire-connecting device. When the joinable end portions 5a of the core wires 5 are connected together in the connector 1 upon the full insertion of the conical wedge 3 into the sleeve 2, the lever 339 is brought back to its original position by means of the end cam 321 and the links 336, 337 and driving member 241 regain their original positions shown in FIG. 35 by the urging force of the compression spring 337b. 
     When the foregoing operation is brought to an end, the movable housing 271 and rotor 215 are moved to the left to return to their original positions by the rotation of the cylindrical cam 239. During this time, the core wires 5 are preventing from being carried forward since they are held by the rotation unit 278. The connector 1 which has firmly connected the joinable end portions 5a of the core wires 5 is pulled out of the corresponding front receptacle 269. 
     Referring to FIGS. 34 and 35, while the driving shaft 220 is rotated for the last time through an angle of 60°, that is, an angle lying between 300° and 360°, the hollow shaft 212a and central shaft 212b make a 120° rotation. The rotation of the driving shaft 220 is transmitted to the hollow shaft 212a by an intermittent rotation mechanism 242. The intermittent rotation mechanism 242 is of the Geneva type as is the intermittent rotation mechanism 42 of the previously mentioned embodiment. A driving wheel 243 is mounted on the driving shaft 220, and a driven wheel 244 is fixed to an intermediate shaft 342. The intermediate shaft 342 parallel with the driving shaft 220 is supported on the housing 211 and comprises a gear 344 engaging a sliding gear 343 provided at the end of the hollow shaft 212a. The two gears 343, 344 have the same number of teeth and are always engaged with each other. 
     While the driving shaft 220 is rotated for the last time, the driving wheel 243 is brought into engagement with the driven wheel 244, causing the hollow shaft 212a and central shaft 212b to be rotated. The rotation of the shafts 212a, 212b leads to the rotation of the rotation unit 278 (FIGS. 34, 36), enabling the connected core wires 5 to be taken out of the housing 211 at a third station 120° spaced from first and second stations in the circumferential direction. Here, the first, second and third stations correspond to those of the embodiment set forth in FIGS. 6 to 33. The sleeve 2 and conical wedge 3 separated from each other at the first station of the movable housing 271 are brought to the second station thereof. Namely, the rotor 215 is rotated through 120°. When the driving shaft 220 makes one full rotation, the clutch mechanism 222 disengages the driving shaft 220 from the electric motor 216. 
     Referring to FIG. 35, the shaft 252 of the connector-feeding mechanism 267 has a clutch 256 formed at the right end and is normally designed to cause the sprockets 254 to be rotated according to the rotation of the driving shaft 220 by means of a compression spring 261. When, however, a manually operative lever 259 is moved leftward against the force of a compression spring 261, the clutch 256 is rendered inoperative. This manually operative lever 259 is provided against the occurrence of an accident, for example, when the magazine 6 fails to be satisfactorily engaged with the sprockets 254.