describing now the drawings , it is to be understood that only enough of the construction of the clock or cycle conveyor of the present development has been depicted therein in order to simplify the illustration of the drawings and to enable those skilled in the art to readily understand the underlying principles and teachings of the present development . turning attention now to fig1 of the drawings , the clock or cycle conveyor 10 shown therein has been depicted in an appreciably shortened representation by conveniently omitting part of the central or intermediate portion of its construction to simplify the illustration . this clock conveyor 10 comprises a frame or frame structure 13 which is supported by means of supports , here in the form of columns or posts 11 upon the floor or ground 12 or other supporting surface or structure . as also will be recognized by referring to fig2 in the frame or frame structure 13 there are rotatably mounted two deflection rolls or rollers 14 and 15 about which there is trained an internally toothed belt or toothed belt member 16 . by referring to fig4 and 5 it will be recognized that there are embedded in the toothed belt or belt member 16 flexible metallic reinforcement inserts or insert members 17 which are preferably formed of any suitable soft magnetic or ferromagnetic material . these inserts or insert members 17 , among other things , also serve to preclude undesired elongation of the toothed belt 16 . the externally toothed deflection roll or roller 14 , which is rotatably mounted upon a shaft or shaft member 21 , is appropriately driven as will be explained more fully hereinafter . this deflection roll 14 is bounded or flanked at opposite sides thereof by a pair of likewise driven shuttle or transfer wheels 18 or 19 which are keyed or otherwise appropriately connected for rotation with the shaft 21 , as best recognized by referring to fig2 . the deflection roll or roller 15 , which need not necessarily be externally toothed at its outer circumference , is , on the other hand , freely rotatably mounted , however likewise bounded or flanked by a pair of driven shuttle or transfer wheels 20 ( in the illustration of fig1 only one of these shuttle or transfer wheels 20 is visible ). a suitable drive motor 22 drives a sprocket wheel 26 or the like seated upon the shaft 21 by means of a sprocket wheel 24 seated upon the power - take off shaft 23 of the drive motor 22 and through the intermediary of a chain or chain member 25 . a further sprocket wheel 27 is seated upon the shaft or shaft member 21 . this sprocket wheel 27 has a further chain or chain member 28 trained thereabout , as shown in fig1 . the outer side of this chain 28 trains about a sprocket wheel 30 ( fig3 ) seated upon a further shaft or shaft member 29 . this shaft 29 is mounted in roller bearings 31 or equivalent bearing means in the frame or frame structure 13 . from the location of the sprocket wheel 30 the chain or chain member 21 leads about a freely rotatably mounted deflection wheel 32 ( fig1 ) and back to the sprocket wheel 27 . a gear or gear member 34 is keyed by means of a key 33 or equivalent structure to the shaft 29 . the teeth 35 of the gear 34 correspond to the teeth of the deflection wheel 14 and mesh therewith . the transmission ratio between the sprocket wheels 24 and 26 , on the one hand , and the sprocket wheels 27 , 30 as well as the gear 34 and the deflection wheel 14 , on the other hand , is selected such that the circumferential velocity of the shuttle or transfer wheels 18 and 19 exceeds , and preferably by a small amount , the circumferential velocity of the deflection wheel or wheel member 14 . the shuttle wheels 20 , depicted at the right - hand side of fig1 seated rigidly for rotation upon the shaft or shaft member 36 , are driven by means of a sprocket wheel 37 seated upon the shaft 36 , a chain 38 and a sprocket wheel 41 seated upon the power take - off shaft 39 of a further drive motor 40 . the two drive motors 22 and 40 need not always operate strictly in synchronism with one another , however in the embodiment under discussion it is advantageous if the number of revolutions or rotational speed thereof correspond to one another when viewed over a longer operating time . reverting again to fig1 it will be recognized that the clock conveyor 10 is equipped with a multiplicity or plurality of entrainment members 42 which in the showing of fig1 have only been schematically depicted . as to these entrainment members 42 , they can be equipped with conveying implements or facilities accommodated to the articles or items or piece goods or the like which are to be conveyed , for instance these conveying implements or facilities may be in the form of hooks , clamps , grippers , which also may be constituted by controlled hooks , clamps or grippers and which conveying implements or facilities have not been particularly illustrated in fig1 to 5 since they may be of conventional design . each of the entrainment members 42 is provided with projections here in the form of a pair of cams or dogs or lugs 43 by means of which each of the entrainment members 42 straddle the toothed belt or belt member 16 . these cams or dogs 43 or the like are formed such that they fit into notches or cut - outs 44 and 45 provided at the outer side or circumference of the shuttle wheels 18 , 19 as well as 20 , respectively , and which notches 44 and 45 are arranged at a uniform circumferential spacing from one another at the outer surface or circumference of the related shuttle wheel 18 , 19 and 20 , respectively . in order to retain the entrainment members 42 and toothed belt 16 at the immediate neighborhood of one another , the frame or frame structure 13 is provided with guide elements as will be now explained . on the one hand , these guide elements comprise a beam or beam member 46 which extends throughout the associated substantially linear or straight run of the toothed belt 16 , the inner side or surface of which slides upon this beam or beam member 46 . at the contact surfaces the toothed belt 16 and / or the beam 46 itself can be provided with a friction - reducing or anti - friction covering or lining , as generally respectively indicated by reference numeral l6a and 46a in fig4 . also the toothed belt 16 at the side confronting the entrainment members 42 and / or the entrainment members 42 at the side confronting the toothed belt 16 may be provided with a suitable covering or lining , as generally indicated by reference numeral 100 , which promote the mutual frictional contact of these elements . on the other hand , belonging to such guide elements are also the holder or guide rails or rail members 47 and 48 which are arranged to both sides along the entire circulatory path or revolving path of motion of the toothed belt 16 . these guide rails or rail members 47 and 48 each possess inwardly flexed or bent marginal or lateral flanges 49 and 50 , respectively , which afford a lateral guiding of the entrainment members 42 and retain such at the direct neighborhood of the toothed belt 16 . in the embodiment depicted in fig4 each of the entrainment members 42 , each of which is essentially formed of a suitable plastic material , is provided with a permanent magnet 51 . each such permanent magnet 51 coacts with the reinforcements inserts or insert members 17 provided in the toothed belt or belt member 16 . this coaction is augmented by virtue of the fact that in the arrangement of fig4 the beam or beam member 46 is completely formed of a soft steel . to the extent that any given entrainment member 42 is not fixedly held or retained , then such entrainment member 42 is positively magnetically coupled with the toothed belt 16 and is entrained by such toothed belt 16 . from the showing of fig1 it will be recognized that at the regions where the toothed belt 16 travels onto the deflection wheels 14 and 15 , respectively , there is provided a respective holder lock or blocking device 54 and 55 of a respective release mechanism 52 , 54 and 53 , 55 , and each such holder lock 54 and 55 is in the form of a double - arm lever . each such holder lock or blocking device 54 and 55 , coacting with the respective deflection wheels 14 and 15 , can be selectively moved or thrusted into and moved or thrusted out of the circulatory path or revolving path of travel of the entrainment members 42 or , more specifically stated , the cams or dogs or lugs 43 thereof , due to the operation of a magnetic or pneumatic actuation element 52 and 53 , respectively . if the corresponding holder lock or blocking device 54 or 55 , as the case may be , is moved or thrusted into the revolving path of travel of the entrainment members 42 and the cams or dogs 43 or the like thereof , then the entrainment members 42 are prevented from being entrained by the further travelling toothed belt 16 . this is readily possible since the force connection or action between the outer smooth side of the toothed belt 16 and the confronting side of the relevant entrainment member 42 is constituted by a purely frictional connection between two substantially flat or planar surfaces . on the other hand , if the holder lock or blocking device 54 or , as the case may be , the other holder lock or blocking device 55 , is rendered inoperative , in other words retracted or thrusted out of the path of travel of the entrainment members 42 for a short period of time , in other words in a pulse - like or impulse - like fashion , then the immediately abutting entrainment member 42 travels in conjunction with the toothed belt or belt member 16 onto the deflection wheel 14 or , as the case may be , the deflection wheel 15 , and at that location is so - to - speak &# 34 ; passed &# 34 ; or caught up with by the somewhat more rapidly revolving shuttle or transfer wheel 18 , 19 or , again as the case may be , the shuttle or transfer wheels 20 , so that the cams or dogs 43 of the now released entrainment member 42 come to lie in one of the notches or cut outs 44 or , again as the case may be , the notches or cut outs 45 . hence , the spacing of the entrainment member 42 with respect to the preceding or leading entrainment member 42 is precisely defined and also remains in this defined state along the substantially linear or straight runs of the toothed belt 16 until the entrainment member 42 abuts against the rearmost entrainment member of the row of entrainment members 42 which bear at the holder lock or blocking device 55 or , as the case may be , the holder lock or blocking device 54 . under these conditions it will be apparent that the continuously revolving toothed belt or belt member 16 simply slides past the blocked or immobilized entrainment members 42 . continuing , the modified exemplary embodiment of fig5 differs from that of fig4 in that here the depicted entrainment member 42 is not provided with a permanent magnet , rather carries a soft magnetic plate or plate member 56 . on the other hand , the beam or beam member 46 is provided at its side confronting the toothed belt or belt member 16 with a magnet or magnetic ledge or ledge member 57 which , in turn , for instance can be composed of a number of permanent magnets arranged in a row adjacent one another . however , the magnet or magnetic ledge member 57 can be also constituted by a ferromagnetic material which can be temporarily magnetized by externally exciting the same into a magnetic state as such has been generally indicated by the coils or windings 58 . a still further embodiment of the invention is depicted in fig6 and 7 . in this case the endless revolving driven traction element is not formed by a toothed belt or belt member , rather by means of a conventional roll or roller chain or chain member 59 which at the linear extending chain runs thereof is slidingly supported upon an associated rail or rail member 60 formed of , for instance , plastic material as generally depicted in fig6 and 7 . it should be understood that with this exemplary embodiment the deflection rolls 14 and 15 would be replaced by appropriate chain sprocket wheels . the entrainment members 42 are here equipped with two pairs of rolls or rollers 61 and 62 which rollingly contact the inner surface of the marginal or lateral flanges 49 and 50 of the guide rails 47 and 48 , as particularly shown for the pair of rolls or rollers 61 in the illustration of fig6 . the entrainment members 42 , which in this arrangement are each provided with an associated conveying or transport hook or hook member 63 or equivalent structure , are each provided with two permanent magnets 64 and 65 . these two permanent magnets 64 and 65 of each entrainment member 42 directly coact with the roller chain 59 which is formed of steel serving as the magnetic material . what is particularly interesting with this exemplary embodiment is that at that location where an entrainment member 42 is present the roller chain 59 is so - to - speak raised from its associated rail or rail member 60 , but in any event , however , must overcome a smaller friction at the rail or rail member 60 . if a given one of the entrainment members 42 is hindered from travelling along with the roller chain or chain member 59 by the action of the holder lock or blocking device 54 or 55 , as the case may be , and in the manner previously discussed , then the not particularly referenced rollers of the further travelling roller chain 59 simply roll upon the confronting surface of the relevant entrainment member 42 and specifically at the permanent magnets 64 and 65 thereof . in the event that for the clock or cycle conveyor 10 , depicted in the arrangement of fig1 only the upper run which travels from the left towards the right of the illustration is employed as the conveying - active run , then it is unnecessary to provide the release or summoning mechanism 53 , 55 and the shuttle or transfer wheels 20 as well as the drive thereof . in such case the entrainment members 42 then will first begin to pile up or collect when coming into contact with the holder lock or blocking device 54 of the release or summoning mechanism 52 , 54 . finally , it is mentioned that there have been conveniently omitted from the illustration of the drawings in order to simplify the portrayal thereof , the slide table or conveyor belts or bands confronting the one or the other run , or both , of the traction element and upon which there slide or are accompanyingly supported the articles or items or piece goods or the like which are engaged by the entrainment members 42 or by the conveyor suspension systems operatively associated with such entrainment members 42 . while there are shown and described present preferred embodiments of the invention , it is to be distinctly understood that the invention is not limited thereto , but may be otherwise variously embodied and practiced within the scope of the following claims . accordingly ,