Device for inserting printed products, for example newspaper inserts, into other printed products, for example newspapers
United States Patent [1 1 Kluge et a1.  
 [ DEVICE FOR INSERTING PRINTED PRODUCTS, FOR EXAMPLE NEWSPAPER INSERTS, INTO OTHER PRINTED PRODUCTS, FOR EXAMPLE NEWSPAPERS [76] Inventors: Willi Kluge; Reinhard Kluge, both of D-63 Giessen, Kugelberg 55, Germany [22] Filed: Dec. 1, 1972 [21] Appl. No.: 311,169  
 [30] Foreign Application Priority Data Dec. 8, 1971 Germany 2160772 [52] US. Cl. 270/55; 270/57; 271/80 [51] Int. Cl B65h 5/30 [58] Field of Search 270/54-57,  
 [56] References Cited UNITED STATES PATENTS Smith, Jr. et al. 270/57 [A5] Apr. 15, 1975 3,269,720 8/1966 Schluckebier et a1. 270/57 Primary ExaminerRober:t W, Michell Assistant Examiner-Milliti V. I Attorney, Agent, or Firm-Woodhams, Blanchard and Flynn [5 7] ABSTRACT A device for inserting auxiliary printed products, for example newspaper inserts, into a main edition of a newspaper. The device utilizes a rotating drum and the drum is supplied with the main edition from a supply device. Opening devices&#39; are mounted on the rotating drum for permitting an opening of the main edition and thereby permit an insertion of the auxiliary newspaper product from a throwing-in device. The main edition is opened to re&#39;eeive the insert by a centrifugal force caused by a rotation of the drum.  
 18 Claims, 16 Driiig&#39;ving Figures PATENTEDAPR I 51975 3,877. 692  
 saw u 15 g DEVICE FOR INSERTING PRINTED PRODUCTS. FOR EXAMPLE NEWSPAPER INSERTS, INTO OTHER PRINTED PRODUCTS, FOR EXAMPLE NEWSPAPERS FIELD OF THE INVENTION The invention relates to a device for inserting secondary printed products, for example newspaper inserts.  
 into multilayered first printed products. for example newspapers, by utilizing a rotating element, a supply device for feeding the first printed products to the rotating element, opening devices on the rotating element for opening the first printed products fed to the rotating element and a device for throwing in the secondary printed products into the opened first printed products.  
 BACKGROUND OF THE INVENTION In a known device of this type (German Pat. No. l 224 329) the rotating element is constructed like a giant wheel on which a relatively large number of pockets is arranged which are held at all times in a vertical position by means specially provided herefor. The first printed products are thrown so as to fall vertically into the pockets and are then opened by auxiliary devices provided herefor on the pockets. After opening the first printed products, the pockets move past a throw-in station in which the secondary printed products are thrown, falling downwardly, into the opened first printed product. The known device operates satisfactorily, however, a relatively high building height exists which is caused by the relatively large number of pockets which are needed if an operating spaced is to be reached and maintained which is fast enough to accommodate a stream of papers coming from a rotational printing machine.  
  A device of the mentioned type, as stated above, must be capable of processing the stream of papers coming from a rotational printing machine, thus approximately 25,000 copies per hour. The device must also be capable of processing printed products separated from a stack. By connecting the device to a rotational printing machine, it must be possible that no secondary printed products be inserted into the first printed products to by-pass the inserting device. In order to be able to mount the required additional devices conveniently, and for reasons of saving space in general. it is desirous that the device have relatively small dimensions. Because of the high speed of movement of the printed products, it is necesary that these receive as few sudden deflections as possible because at sudden deflection such large inertia forces can be created that the relatively pliable printed products are deformed so that breakdowns may occur. In consideration of the often existing pliability of the printed products, it is also desirable that these be moved while lying substantially horizontally because in the case ofa vertical positioning there exists the danger of a sinking together of the printed products.  
  The basic purpose of the invention is to construct a device of the type mentioned in the beginning in such a manner that at a small building size sudden deflections of the printed products are avoided and that the frrst printed products are moved in a substantially horizontal position to and away from the device.  
 SUMMARY OF THE INVENTION This purpose is attained according to the invention irv such a manner that the rotating element is constructec as a drum having a horizontal axis, on the periphery Ol which drum support surfaces for first printed product: are provided, that holders are provided which hold 2 part of the opened first printed product on the associ ated support surface while the not held other part 01 O the opened first printed product is freely movable at least so far that an opening angle sufficient for a safe throwing in of a secondary printed product is created and that the supply device feeds the first printed products substantially tangentiallyto the drum.  
  Such a device can be constructed relatively small and can operate at a desired operating speed. It is sufficient if six support surfaces for first printed products are arranged on the periphery of the drum with normal size papers, a building height of approximately 1 m. and a width of approximately 0.7 m. is sufficient. Due to the tangential feeding of the printed products to the drum. a flowing transition without sudden deflection occurs. A deflection takes place only when the first printed product is held on the drum and rotates with same. This deflection, however, is not sudden but is advantageous for the opening operation of the first printed product because the flywheel force drives the not held part 01 the printed product radially outwardly so that mechani cal means for unfolding the first printed product are nc longer needed. With six supports on the periphery ol the drum, during one rotation six first printed products are processed. ln order to obtain an operating speed 01 25,000 copies per hour, a rotational speed of 25.000/ 6 4,170 rotations per hour or 4,180/X 60 rotations per minute is sufficient. This rotational speed is relatively slow and technically easily possible. On the other side, one obtains already sufficiently grea flywheel forces to assure the opening of the first printec products.  
  In a preferred embodiment of the invention, eacl support surface is constructed roof-shaped. This roof shaped construction is particularly advantageous for the tangential supply of the first printed products since these can then be fed when the one surface of the roofshaped support corresponds with the supply device Therefore, initially only small flywheel forces exis&#39; which is advantageous forthe preparation of the opening operation.  
  According to one embodiment of the invention eacl opening device has several&#39;rotatingupper belts whicl are provided above the &#39;roof surface in the zone 0 which the closed side, for example a folded edge of thc first printed product which must be opened, for exam ple a newspaper, is provided, whereby the upper belt: after the bulging of the first printed product by pressing a closed side against at least one stop and the becomin effective of the holders ,are removable from the drun in such a manner that they do not hinder the openin; of the first printed product. Such a constructed openin; device operates particularly safe because with certaint a compression at the closed end is achieved which re sults in the desired bulging. It is hereby not feared tha the first printed products collapse even if they are pli able because they are well supported on the associatet support on the drum. In place of only one upper bel additionally also an oppositely positioned driven lowe belt can be used.  
  Further details with respect to the construction of the opening device are discussed in connection with description of exemplary embodiments.  
  The holder are advantageously pivotable holder levers which are supported on the drum and are operable by fixed control surfaces arranged on the machine frame. Details of the control of the levers will be described later.  
  According to a further development of the invention. the drum has connected in front thereof a deflecting device with which arriving first printed products can be fed by by-passing the drum to a discharged belt connected after the drum. This additional device makes it possible to install the device fixedly behind a rotational printing machine. If no secondary printed products are supposed to be inserted into the first printed products. then the deflecting device is operated. One embodiment of a deflecting device, will be described later on. Also further additional devices for separating of first printed products will yet be described.  
 BRIEF DESCRIPTION OF THE DRAWINGS Exemplary embodiments are illustrated in the drawings. in which:  
  FIG. 1 is a schematic side view of a device according to the invention.  
  FIG. 2 is a section of same enlarged with respect to FIG. 1 in the ione of the dash-dotted frame II in FIG.  
  FIG. 3 is a partial cross section of the drum illustrated in FIG. 2 in a scale enlarged with respect to FIG. 2 along the line lIlIII of FIG. 4.  
  FIG. 4 is a top view in direction of the arrow IV in FIG. 3.  
  FIG. 5 is a cross-sectional view corresponding to FIG. 3 in a different operating phase&#39;along the line VV of FIG. 6.  
  FIG. 6 is a top view in direction of the arrow VI in FIG. 5.  
  FIG. 7 is a schematic illustration of the device, which illustration is enlarged with respect to FIGS. 1 to 6, in the zone in which the closed front side of a first printed product is jammed up.  
  FIG. 8 is a top view in direction of the arrow VIII in FIG. 7.  
  FIG. 9 is a partial illustration enlarged with respect to FIGS. 1 to 8 in the zone in which lateral insertion into a first printed product takes place.  
 &#39; FIG. 10 is a perspective illustration of a stop for-the closed side of a printed product, which illustration is enlarged with respect to FIGS. 1 to 9.  
  FIG. 11 is a front view of an adjustable part ofa control cam.  
  FIG. 12 is a cross-sectional view along the line Xll- XII of FIG. 11.  
 FIG13 is a top view of an opening device.  
  FIG. 14 is a front view corresponding to the arrow XIV in FIG. 13.  
  FIG. 15 is a perspective illustration of an opening lever and FIG. 16 is a perspective illustration of a parting insertion element.  
 DETAILED DESCRIPTION The mai n parts of the entire device are (see FIG. 1) a drum 101, and accelerating assembly 102, a supply belt assembly 103, a discharge belt assembly 104, a  
 throw-in device 105, a deflecting device 106 and a separating device 107.  
  The mentioned main parts are supported in a frame 108 which is not illustrated in FIG. 1 and which is partly illustrated in FIGS. 3 to 6 and which has two parallel side plates 109a and 10912. The nature of the mentioned main parts and their cooperation will be described more in detail hereinafter.  
  The drum 101 has six equally constructed supports for first printed products, whereby each support has two surfaces 37 and 38 which extend roof-like or at an angle to one another and which abut at 36. Thus the entire drum is composed of 12 planar surfaces.  
  The descending surface 38 has three roller conveyors 39 (see FIG. 4). Upper belts which are guided over guide rollers 41 and 42 press at times onto these roller conveyors. In FIG. 3, the upper belt 40 shown therein is spaced a newspaper thickness from the associated roller conveyor 39. The guide rollers fixedly 41 are connected with respect to rotation to a shaft 43. Guide rollers 44 (FIG. 12) which are advantageously constructed as roller bearings and grooved friction rollers 45 are arranged on the shaft ends which laterally project over the drum.  
  The shaft 43 is supported in two arms 46 which in turn are supported on a sationary pivot rod 47. The rod 47 is held on the arms 48 which are secured on the side walls 49 of the drum 101. The guide rollers 42 are connected so as to be fixed with respect to rotation to a shaft 50 which is supported in the already mentioned arms 46.  
  A swingable opening plate 51 is secured on the rod 47 by means of connecting pieces 52 (see FIG. 8). The plate is furthermore secured on a rod 53 which at 54 is supported in a guide bar 55. Approximately in the center of the guide bar 55 there is arranged a movable bearing 56. The bar 55 carries at its end a guide roller 57 which can be constructed as a ball bearing and which runs in a guide groove 58. FIG. 3 indicates that the curve is inclined toward the center of the drum which causes a lifting of the rod in such a manner. that the opening plate 51 is pressed radially outwardly and through this frees the exit for the papers (see also the bottom of FIG. 2). A guide plate 83 which defines an angle with the opening plate 51 is arranged on the surface 38.  
  A rectangular opening arm 59 is supported by means of a bolt 60 on the surface 37. Below the surface 37 the bolt 60 is connected fixed with respect to rotation to a lever arm 61 which is engaged by a return spring 62 which is fixedly anchored on the drum. Of course, the arm 59 is also connected fixed with respect to rotation to the bolt 60.  
  The arm 49 (FIG. 4) is effected by a lever 64 which is pivotably supported at 63 and has at its one end a feeler roll 65 constructed as a roller bearing, which feeler roll is designated to cooperate with a control surface 66. An adjustable sliding guide 67 is arranged for the opening arm 59 at the side wall 49 of the drum 101. This sliding guide is secured on a plate 70 (see FIG. 9) namely by means of a bolt 68 which is screwed into a knurling wheel 69. The front end of the opening arm 59 furthermore rests on a parting arm 71 which is also rotatably supported on the drum, namely, at 72 which can be seen more exactly in FIGS. 8 and 9. On the other side of the pivot point 72 the parting arm 71 has a portion 73 with a feeler roll 74 which is constructed 7 as a roller bearing and which is designated to run on the curve 75 (see FIG. 3). An also provided. return spring is not illustrated in the drawing.  
  Opposite the opening arm 59 (see FIG. 4) a further opening arm 76 is arranged which is supported rotatably at 77 and has a straight-extended form..The opening arm 76 has on the other side of the. pivot point 77 a portion 78 on which is provided a feeler roll .79 constructed as a roller bearing, which feeler roll 79 is designated to run on a control surface 80. Below the support surface 37 there is&#39;provided a leverarm 8l which is connected fixed with respect to rotation to the bolt 77, just like the arm 76 is also connected fixed with respect to rotation to the bolt 77. A return spring 82 engages the lever arm 81, which return spring is anchored on the drum.  
  Near the ends of the rod 53 stop pieces 84 (FIG. 7) for the corners of the first printed products are arranged. Such a stop piece is perspectively illustrated in FIG. 10. The stop pieces are arranged in such a manner that the point 111 of thenotch 110 points outwardly. A movable screw-on plate 85 serves. as securement. The stop pieces 84 are used for cooperation with the corners of the first printed product which must be opened.  
  The supply device which is identified as a whole with 103 in FIG. 1 has a supply belt 1 which is provided with catches 113. Above the belt 1 pressure brushes 3 are arranged which assure that the first printed products Il4,&#39;for example newspapers, will for sure abut the stops 113 and through this an even rhythm is assured. The belt 1 is pivotable about the shaft 115 on which toothed belt pulleys ,6 are secured. A pressure roller- 4 is provided above the toothed belt pulley 115. The belt I is followed by a conveyor belt 5 which is also provided with catches and with which pressure brushes 3 are also associated. The belt 5 runs over toothed belt pulleys on the shaft 115 and&#39;further toothed belt pulleys 6&#39;. The belt 5 is also pivotable about the axis 115.  
  Above the accelerating belt 102&#39; there are arranged three pressure rollers llu, 11b and 110 which are coated with-a friction layer 12 which can consist for example of a relatively soft rubber. The acclerating belt 102&#39; has he catches and runs approximately 1% times faster than the belts 1 and 5. The accelerating belt 102&#39; is driven through toothed belt pulleys. 8 and is guided over guiderollerslO which are freely rotatably on one axis.  
  A bridge 7 is arranged between the belt 5 and the accelerating assembly 102 and a support plate 13 between the accelerating assembly 102 and the drum 101. The plates 7 and &#39;13 prevent that the first printed products bend during the transfer from belt5 to the&#39;accelerating assembly 102 or rather from acclerating assembly 102 onto the drum. I  
  Laterally of the belts 5 and 102 guide rails 150 are arranged which prevent the first printed products from moving laterallyaway therefrom.  
  The discharge device 104 has also a toothed belt conveyor belt 15 which is provided with catches 16. The belt is driven by toothed belt pulleys 17 and is deflected by free-wheeling guide rollers 18. At the;transition from the drum 101 to the dischargedevice 104, a pressure roller 19 and a guide plate 20 are arranged which is supposed to assure a safe transfer of the printed products onto the conveyor belt 15.  
  The deflecting device 106 has belts&#39;2l which -do not have any&#39;catches. Said belts run over guide rollers which are arranged between the toothed belt pulleys 8 and which-are, however. freelyrotatable, while the &#39;below the switch &#39;27 into which deflected papers fall and from which they are deflected by a&#39; deflector 34. The sorted printed products then fall onto a continuous belt, whereby they are placed scale-like one on top of the other. i  
  A belt 28 is connected after the switch 27 which again is provided with catches. On both sides of the belt folding rollers 29 and 30 are arranged through which the printed products are compressed, whereby air is pressed out so that a flat stackable form of the printed products is created. The printed products are then fed through a deflecting device 31 to&#39; a bunching device.  
 The throw-in device 105 has an upper&#39;belt 96 which is guided over guide rollers 97 and 98 (see FIG. 2), The I upper belt 96 cooperates with a large disk 95. The second printed products are supplied over a conveyor belt 93 which is provided with catches. A switch 95 is arranged between the belt 93 and the large disk 95, of which switch the one position, namely the deflecting I position, isillustrated with a full line and the other posi- OPERATION The inventive device operates as follows: H During normal operation, that is when second printed products 115, for example newspaper inserts,  
 &#39; are supposed to be inserted into first printed products 114, for example into newspapers, the belts 1- and 5 are in the position shown in full lines in FIG. 1. The first printed products 1l4are delivered over the beltsl and 5 and are speeded up to approximately one and one half&#39;times the delivery speed bytheaccelerating assembly 102, through which&#39;the speed required for placement onto the drum I01,is reached. I a I The upper belts 40 havethe purpose to&#39;press the paper (referencewill be made hereinafter only to paper even though other printed products&#39;ca&#39;n also be used) still being held by&#39;the acclerating assembly belt 102&#39;and the last roller 11c at the folded edge onto the roller conveyor 39 and to forward :it to the opening plates 51 and 83. The upper belts 40- are driven by the, friction rollers&#39;45 which in the zone A (-see FIG. 2) engage a corresponding&#34; friction surface 152.(;FIGS. 11, 12). The  
 rotary movment of thef-rollers-45 and,=consequently. a  
 movement of the belt 40 will assure that the paper, the  
 speed of movement of which is slightly greater than the peripheral speed of the drum 101 is not stopped but is in an unhindered manner, moved into the gap between upper belt 40 and the associated roller conveyor 39. As soon as the upper belt 40 controlled by the curve 91 (FIG. 1) is lowered entirely, the accelerating assembly 102 releases the paper 114 completely and the upper belts 40 take over the further handling of the paper. Thus. the movement of the paper is continuous and most importantly no sudden deflections of the quickly moved paper occur.  
  In the zone B, both the guide groove 91 and also the friction surface 152 are adjustable by means not illustrated to permit an adjustment to changing newspaper thicknesses. The same is true for the zone D in which the papers are ejected after the insertion of secondary printed products. Already in the zone a driving movement of the upper belts 40 begin for ejecting the paper. The adjustment in the zone B and in the zone D is as a rule different because the paper moving into the zone B is thinner than the paper ejected in the zone D, in which paper an insert is provided. For example the number of pages can increase from 32 to 96.  
  The followingoperations take place during the movement from the zone A to the zone D. The upper belts 40 drive the paper forwardly against the corner stops 84 (see FIG. 8). The fold 114a of the paper 114 is hereby placed into the notch 110 of the corner stops 84. By a further forward movement of the paper same is raised up at the corners whereby the fold 114a assumes approximately the curved shape as illustrated in FIG. 8. Now the feeler rolls 74 run onto their associated controlling 66., 80 (FIG. 4) which cause the parting arm 71 to be swung in. In FIG. 8 the swung-in position is already illustrated. After this condition is achieved. the lever 64 runs onto the control surface 66 and the end 78 of the opening arm 76 onto the control surface 80. The opening arms 59 and 76 are hereby swung from the position illustrated in FIG. 4 into the position illustrated in FIG. 6, whereby the associated release springs 62 and 82 are tensioned. The front ends of the opening arms slide hereby initially off on the parting arms 71 and the slide surfaces 67 through which a clean insertion of the opening arms 59 and 76 is assured.  
  During the further course of rotation ofthe drum 101 the upper belts 40 are lifted due to the their control in the guide groove 91, namely into their highest position which they reach during one drum rotation. This position is reached approximately at I (see FIG. 2). This lifted position is now for the present time maintained. The part l14b of the paper which is held by the opening arms 59, 76 remains lying on&#39;the drum, while the not held part 1140 is thrown radially outwardly following the centrifugal force. At II (see FIG. 2) the paper 114 which is illustrated by dash-dotted lines is opened widely. The operation of the throw-in device is coordinated in such a manner that during the passing movement of the opened paper an insert 115 is thrown out from the throw-in device 105 and penetrates into the opened paper 114. The guide plate 99 assures that the spread-apart part 1146 of the paper does not bend outwardly. The condition in the zone II is also illustrated in FIGS. and 6.  
  During a continued movement of the drum 101, the upper belts 40 again move toward the paper until finally the condition shown at the stretch D is reached in which the paper is fixedly clamped between the. upper belts and the roller conveyors. The bar runs now onto the elevation 58a of the guide groove 58 which causes the plate 51 together with the corner stops84 to be moved outwardly, as this is shown in FIG. 2 in the zone D. The upper belts 40 are now driven in the&#39;manher that the paper 114 together with the inserts provid ed therein are pushed off from the drum and are further driven by the belt 15. A clean pressure on the belt is assured by the guide plate 26 and the pressure roller After ejecting of the paper from the drum 101, the upper belts move again away from the drum, however, not quite as far as this was the case before the throwing in of an insert-115 which can be seen from FIG. 2 also on the course of the control groove 91.  
  FIG. 9 illustrates a paper which has an outer part 1200 and an inner part 120b. It is now possible to open the paper not only in the center, that is at 121, but the opening can also take place in the zone 122. For this it is only necessary to adjust the parting arm 71 at the correct \height which is possible by the slotted holes 123. Of course the sliding guide plate 67 for the arm 59 must be adjusted correspondingly at this height which is possible with the help of the knurled wheel 69. In this case the corner stop 84 is removed so that a corner bulging of the paper does not take place.  
  If the device is supposed tobe fed by a separating device, the belt 1 (see FIG. 1) is lowered corresponding to the double arrow 124 so that the connection to the separating device is created.  
  If no inserts are supposed to be placed into the papers 114 coming from a rotational printing machine, then the belt 5 is brought into the lowered position illustrated in dashed lines in FIG&#39;. 1, while the belt 1 remains in the lifted position illustrated in full lines. The papers 114 are then gripped by the deflecting device I06 between the pulleys 24 and the belt 21 and are passed on to the belt 15, whereby a clean transfer to the belt is assured by the guide plate 26 and the pressure roller 25.  
  If a breakdown occurs during the feeding of the inserts 115, the switch 27 at the end of the belt 15 is swung into the position shown in a full line so that the papers which due to an operational breakdown were not provided with inserts get into the bucket wheel 33 and from there are placed on the belt 35. Thesepapers can then later on be separated in a separating device and can again be fed to the device for insertion of the inserts.  
  FIGS. 11 and 12 illustrate an adjustable part of the control cam 91. This adjustable part of the control cam is provided on a plate 151 which is secured on the frame of the device, thus on one of its side plates 109a or 109b. The fastening point is movable so that the curve portion provided on the plate 151 canbe adjusted with respect to the remaining curve portions parting element 153 has a sharp penetrating edge 155 which transfers through an incliried surface 156 into a thick part 157 of the&#39;parting&#39;elementy During opening of a first printed product 114, first the penetrating edge 155 penetrates due to a swinging When using an opening device according to FIGS. 13&#39;  
 to 16 a corner bulging of the printed product is not required. This type of opening is particuarly advantageous if an opening is not to take place in the center as this is illustrated in H6. 9. However, the opening device of FIGS. 13 to 16 can, of course, also be used for an opening in the center of the first printed product.  
  The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:  
  1. In a device for inserting second printed products into multilayered first printed products having a folded edge, said device having a rotating drum rotatable about a horizontal axis, a plurality of support surfaces mounted on the periphery of said drum and adapted to receive said first printed products thereon, a supply device including a feed mechanism for feeding said first printed products substantially tangentially to said drum and depositing one of said first printed products onto one of said support surfaces, a plurality of holders located adjacent each of said support surfaces for holding one part of said first printed product on an associated support surface, a plurality of opening devices mounted on said drum for controlling the amount of opening of said first printed products and a throwing-in device for throwing in said second printed products into said opened first printed products, the improvement comprising wherein each of said opening devices includes at least one drivable belt which is located adjacent each of said associated support surfaces between which said folded edge of said first printed products, which are to be opened, is received, stop means located adjacent each of said support surfaces and adapted to be engaged by said folded edge of said first printed products and drive means for driving each of said drivable belts for moving said folded edge on each of said first printed products into engagement with one of said stop means to effect a bulging of said first printed products through a pressing of said folded edge against said stop means, each of said plurality of holders including means supporting same for movement into said bulge to hold said one part on said associated support surface to thereby permit the other part of said first printed products to move radially outwardly from said drum to a limit position defined by said opening devices by one ofa centrifugal force effect and gravitational force effect to define an opening for receiving said second printed products.  
  2. The improvement according to claim 1, wherein each support surface has a pair of surfaces connected along a common edge, one of said surfaces being inclined relative to the other.  
  3. The improvement according to claim 1, including means defining a roller conveyor mounted on each of said supportsurfaces at least below each of said drivable belts.  
  4. The improvement according to claim 1, wherein said drive means for driving said drivable belts includes friction rollers cooperating with friction surfaces provided on a machine &#34;frame, said friction rollers being fixedly connected with respect to rotation to the ends of a shaft having guide rollers thereon for guiding said drivable belts.  
  5. The improvement according to claim 4, wherein said guide rollers are supported on a pivotable holder mounted on said drum and stationary control cams are provided on said machine frame for controlling the pivoting position of said holder.  
  6. The improvement according to claim 5, wherein said stationary control cams&#39;have adjustable parts for compensating for the vafious thicknesses of the first printed products.  
  7. The improvement according to claim 1, wherein said stop means for the closed side of said first printed products comprise corner stops cooperable with the corners of said first printed products and near these corner stops, parting arms for engaging the paper are mounted.  
  8. The improvement according to claim 6, wherein said corner stops includes means for movably supporting said corner stop for radially outwardly movement from said first printed products by control surfaces arranged on said machine frame.  
  9. The improvement according to claim 7, wherein said parting arms are pivotable levers which are operable by fixed control surfaces which are secured to said machine frame.  
 10. The improvement according to claim 7, wherein said holders are supported on said drum and are composed of pivotable opening levers which are operable by fixed control surfaces arranged on a machine frame.  
  11. The improvement according to claim 10, wherein the free ends of said opening levers rest on said parting arms and the pivot axes of said opening levers are arranged so that said opening levers first engage with their free ends the first printed products which must be held open.  
  12. The improvement according to claim 1, including a parting element for opening the first printed products and an opening lever, each having one penetrating edge and inclined surfaces thereon starting out from said penetrating edges, over which inclined surfaces said parting element and opening lever transfer into thick zones of said first printed products.  
  13. The improvement according to claim 1, wherein in the zone of throwing in of said second printed products a support plate is provided to define an abutment for the spread-away part of said first printed product.  
  14. The improvement according to claim 1, wherein said supply device has an accelerating assembly which is connected in front of the drum.  
  15. The improvement according to claim 1, including a deflecting device connected in front of the drum, said first printed products being deflected by said deflecting device to bypass said drum to a discharge belt connected after the drum.  
  16. The improvement according to claim 15, including a pivotable end portion on said supply device, which end portion cooperates in a pivoted position with a feeding belt connected in front of said drum and in a further position with said deflecting device.  
 ing a switch connected after discharge belt, which at breakdowns in&#39; the supply of second printed products deflects said first printed products from their path to a bunching device.