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Sept. '3, ‘19.46. ‘2,406,936 A. B. wooDRuFF SHEET DELIVERY MECHANISM Filed June 15, 1945 > 5 Sheets-Sheet 1 /.m.uI0 ?VmwJ .mw W Mp .WMW.0W BMW. 2. Sept.'3, 1946. _-. A. B..'WOODRUFF 2,406,936 SHEET DELIVERY MECHANISM Filed June13, 1945 5 She‘etS-Sheet'2 "‘l I Q» il I .._ mm é ,, I I o D a p: s“ ,_3, > | 0 I II I . f mmW»Q.T,_1.H,.w-NU I - l l 4.2T E , MN 6». v 4/ u.“ m mm H mm MN Rwm?mr .1W; aw Mv. mm4_ ‘ . KgE.“3“, ‘ wm Wong T. Sept. 3, 1,946. - 4 A. B. WOODRUFF ' 2,406,936 SHEET DELIVERY MECHANISM ‘Filed June 1:5, 1945 5 Sheets-Sheet 5 a: 3..‘ Arthur B. woodv-wif mvamfola ‘Wm/4W4” ‘ ‘ > AGENT Patented Sept. 3, ‘1946 2,406,936 UNITED STATES PATENTOFFICE. 2,406,936 SHEET DELIVERY MECHANISM Arthur B. Woodruff, Brecksville, Ohio, assignor to Harris-Seybold Company, a corporation of Delaware 1 Continuation of application Serial No. 412,390, September 26, 1941. This application June 13, 1945, Serial No. 599,151 5_ Claims. (Cl. 271-79) 2 In the operation of printing presses equipped with mechanism for accumulating the sheets in a pile at the delivery end of the machine, it is usually necessary to shut the press down while the platform carrying an accumulated pile of sheets is removed, an empty platform'is inserted accumulation of sheets while the main delivery platform is being removed and replaced. Another object is to provide an auxiliary sheet delivery device for a printing press which can be placed into and out of operation quickly and efficiently while the press is running. The invention has been illustrated in connec tion with a rotary offset lithographic printing and the automatic piling and platform lowering devices are adjusted to begin the stacking of a new pile. ‘ press. In the ?gures ‘ With the advent of modern high speed rotary 10 Fig. 1 is a side elevation view of a part of a presses the frequency with which the operation lithographic ‘press constructed according to the has to be performed and the loss of production invention. for a given length of shut down time has in Fig. 2 is an enlarged view of a part of Fig. 1 creased. Furthermore when thick stock such as showing the auxiliary delivery. mechanism in cardboard is being printed changes are still more 15 greater detail; the parts being in position to cause frequent and the loss is thus further accentuated. sheets to be deposited on the auxiliary platform. Various solutions to this problem have been Fig. 3 is a view similar to Fig. 2 but showing proposed. For example, presses have been the parts in position to permit the sheets to be equipped with two full sized pile delivery mecha conveyed to the main delivery platform. nisms placed in line and equipped with controls 20 Fig. 4 is a plan view of the auxiliary delivery permitting the depositing of sheets on either plat mechanism corresponding to Figs. 1 and 2. form while the other with its pile of sheets is Referring to the drawings, I0 is the base of a being removed and replaced by an empty plat printing press resting on the floor. Side frames form. - This arrangement is objectionable because ll, l2, which are secured to base l0 support a of the large amount of ?oor space required and 25 lithographic printing unit comprising impression the high cost of constructing what amounts to cylinder l3, blanket cylinder l4, plate cylinder l5, form inking rollers 16, and dampening rollers two complete delivery mechanisms. In another arrangement a temporary platform l‘l. Impression cylinder I3 is equipped with sheet is inserted above the accumulated pile in position grippers l8 which are arranged and operated to to receive a relatively small number of sheets 30 open and close at proper times in known manner. while the main platform is being changed, the Sheets are fed to impression cylinder l3 by a temporary platform then being withdrawn leav transfer cylinder l9 which receives them from ing its pile of sheets on the main platform. This any suitable source such as a preceding printing arrangement has not been satisfactory because unit if the press is a multicolor press. It is to be of the difficulty of inserting and removing the 35 understood, however, that the cylinders l3, l4, l5 temporary platform quickly while the machine is may be the cylinders of a single color press, in running and because the mechanism required in which case cylinder l3 would receive sheets from suitable sheet feeding mechanism. terferes with convenient operation of the main pile mechanism. Frames ll, l2 also support a driven shaft 20 It'is an object of this invention to provide a 40 to which are keyed two sprockets 2|, one at each side of the press, which drive a sheet delivery delivery arrangement for a printing press or conveyor, later described, in the usual manner other machine which will permit continuous oper known ‘in printing presses. Driving means of any ation of the machine and will be free of the above disadvantages and convenient and e?icient in operation. _ known or preferred kind, not shown, are provided 45 for rotating the cylinders in the directions indi cated and for rotating shaft 26 for driving the Another object is to provide delivery means for a printing press which will provide two selectively operable sheet delivery mechanisms in the same ?oor space as is ordinarily required for a press having only. one such mechanism. ‘ " Another object is to provide a printing press wherein the space between the main sheet de livery and the nearest printing unit is utilized conveyor. ‘ - The main pile delivery mechanism is supported by lower delivery side frames 22, 23, upper de 50 livery side frames 24, 25, and legs 26, 21, all of which parts are secured to each other and to cross support members, not shown, in known manner to form a rigid supporting framework. This main delivery mechanism is spaced from both as a working space and as a space for the 55 the printing unit previously mentioned by a dis 2,406,936 3 4 tance suitable to provide the working space which is required at times by the operator in perform ing his duties incident to operation of the press, and to provide space for the auxiliary pile de livery mechanism subsequently to be described. Delivery frames 22, 23 are joined to and spaced properly from press frames II, I2 by coupling frame members 28, 29 secured to the delivery frames by bolts 39 and to the press frames by 65. The rear cables 66 extend upward, around sheaves 19, then toward the press and around sheaves H and downward to drums 12 keyed to the automatic power driven pile lowering shaft 13 journaled in frames 22, 23. The front cables 61 extend upward and‘partly around sheaves ‘II and thence downward and around drums 12. operator may conveniently reach the parts of frames, coupling members 28, 29, platform 34, Known means not shown are provided for auto matically gradually rotating shaft 13 to cause 10 platform 62 to lower at the proper rate to accom bolts 3| and tie rod 32. modate the accumulation of sheets in the pile Frame members 28, 29 are formed with upward 56. Further description is deemed unnecessary projections 33 which serve to support a work since such mechanism is well known in the art. platform 34 having angle iron cleats 35. The It is to be noted that the various parts, includ platform 34 extends across the press between ing the printing unit, the press frames, delivery frames and is arranged at such height that the the printing unit such as the inking mechanism, the plate cylinder I5, and blanket cylinder I4, which he must work upon during operation ‘of the press. The conveyor by which sheets are conveyed from impression cylinder I3 to the main pile de livery mechanism comprises a pair of endless par allel chains 36, 31, which support at intervals corresponding to the circumference of cylinder I3 a plurality of sets of grippers 38 (Fig. 1) for grasping the forward edges of the sheets. Each of these sets of grippers comprises a plurality of and the sheet conveyor supports have been so arranged as to provide a space below the lower run of the conveyor and between the press and delivery frames. In this space an auxiliary de livery platform 1.4 is provided for receiving sheets from the conveyor during the time a full main platform 62 is being removed and replaced by an empty platform, thus allowing continuous opera tion of the press. Auxiliary platform 14 is equipped with four wheels or casters 15 carried in brackets 16 se cured to the platform and the casters .15 are guided between rails 11 bolted to the floor. Plat ?ngers 39 which are supported upon an oscillat able shaft 49 and a like number of abutments 4I 30 form 14 is provided with side wall members 18, carried by a ?xed shaft 42. The shafts 49 and 42 are supported at their ends by brackets 43 each of which is supported at two points by the 19 supported on brackets 89, 9I which may be adjusted to accommodate different widths of sheets by sliding the same along grooves 82 and clamping by means of thumb screws 83. Each corresponding chain 36 or 31. Spring means, not shown, are provided tending to turn shaft 49 in 35 of the side wall members 18, ‘I9 has adjustably clamped thereto an end wall member 84 sup the direction to close ?ngers 39 on their abut ported by an iron brace 85 one portion of which .ments. Keyed to shaft 49 is a lever 44 which slides in a groove 86 in the corresponding side carries a cam follower roller 45 for the purpose of wall member 18 or ‘I9. Brace 85 also has integral opening the gripper ?ngers 39 against the afore therewith a threaded stud 81 which extends AH) mentioned spring means. through slot 88 and carries a wing nut 89 for The chains 36, 31 carrying the sets of grippers tightening the members 84 in various positions just described travel around sprockets 2|, thence to accommodate sheets of different lengths. around sprockets 46, 41 suitably supported by Platform ‘I4 is arranged to occupy a position frames 22, 23 thence around sprockets or wheels adjacent to a vertical plate 99 having cleats 9I 48 which are supported on a shaft 49 ?xed in whichare fastened at their lower ends to a square frames 24, 25. In traveling back toward the press cross bar 92 secured by bolts 93 in frames 22 and thesechains pass around idler wheels 59 and 5! 23 and at their upper ends to brackets 94 which which are suitably supported on studs in frames loosely embrace a shaft .95 rotatably journaled '22, 23. Along the lower run of chains '38, 31 tracks 52, 53 vare provided along the upper edges 50 in the delivery side frames 22, 23. Plate 99 forms an end wall for the platform 14 when the 'of ‘whichthe chains run. These tracks are se latter is in operative position and, in conjunction ‘cured to frames II, I2 by brackets 54 and to with side wall members 18, ‘I9 and end wall frames .22, 23 by brackets 55. Other tracks, not members 89, forms a box like structure for re shown, are ‘provided where needed to support the ceiving sheets and forming them into a pile as chains. they are deposited by the sheet conveyor. Mechanism of known construction is provided To selectively control the deposition of sheets for causing the sheets to be released by the sets on the platform 14 mechanism is provided which of grippers 38 and to be deposited in the form will now be described. Below the delivery con of a relatively high main pile-of sheets 56. such mechanism comprises a bracket 51 supported 60 veyor drive shaft 29 is a cross support bar 96 secured by bolts 91 to frames II, I2. This bar upon tie rod 58 and shaft 49 and carrying‘a grip~ has a pair of brackets 98 secured thereto by bolts per opening cam 59 located in proper position 99 and these brackets carry a rotatable shaft I99 to engage each of the rollers 45 associated with and a non-rotatable round bar 'I9'I. On shaft the traveling sets of grippers. Cam 59 functions to open gripper ?ngers 39 at the proper time to 65 I99 are keyed two tape drums I92 each carrying a pin I93 to which one end of a torsion spring cause the sheets to drop on pile 56. This action I94 is secured, the other end of the spring being is facilitated by the usual stripper ?ngers 69 and secured to a pin I95 in bracket 98. Additional lend stakes 6I. tape drums in any desired number are also pro The pile 58 is formed ‘upon a main delivery vided, of which one is shown at I96. Springs I94 platform 62 which is provided with legs 93 and are arranged to tend to turn shaft I99 in ‘the is supported on cross beams 64 extending across counter-clockwise direction as viewed in Fig. 1. the .press and resting at their ends upon lift bars Each of the drums I92, I96 has secured thereto 65. Each of the latter bars is raisedand lowered one end ofa tape I91 of suitable length which is by a pair of cables 66, 61 having .‘hooks 68 at trained partly aroundlbar iIIl‘I and thence toward their lowerends for engaging pins 69 in the bars 2,406,936 the delivery platforms to a bodily movable square cross bar I08 to which it isfastened. by screw I09. The ends of bar I88 are turned down to form necks III] which slidably ?t into slots III in guide bars H2 one of i which is fastened to chain track 52 and. one to track 53 by bolts II I3. Near each end of bar I88 is aih‘ole through which extends a cable II4 having an enlarged end 'I I5 which are illustrated. in the drawings.‘ jThese ?ngers overlie the platform ‘I4 and are arranged when in operative position to lie abovea sheet held by the grippers 39 and below the shafts 49 and 42. They are also provided with abutments I51 against which the sheets may strike when released from the grippersand before settling onto platform ‘I4. ‘ . 1 which prevents the cable from passing through The movement of shaft 95 in the. clockwise the hole in one direction. These cables extend 10 direction is limited by an adjustable stop com toward the‘left in the ?gures, pass partly around prising a screw I58 in stud I59 which is ?xed in grooved‘idler wheels IIB on shaft 95 and thence frame 22. ‘aroundgrooved winding drums II‘! to which the The parts described above are arranged to ends of the cables are attached. occupy operative and inoperative positions shown The drums II‘! are keyed to a shaft H3 which 15 respectively in Figs. 2 and 3. is rotatably journaled in frames 22, 23 and is If it is desired to‘ move the parts from operative held against endwise movement by collar I I9 and to inoperative position the hand lever I32 is a small gear I29 keyed to the shaft. The hub of moved counterclockwise until lever I55 strikes each of the drums Il‘l carries a pin I22 to which stop ‘I58. This ‘movement results in a partial ro is secured one end of atorsion spring. I23 sur rounding shaft H8, the other end of the spring 20 tation of shaft 535 and a corresponding shorten ing of lever and link connection #36, i38 ‘suffi being secured to a pin I24 in the corresponding cient to raise cam. I49 out of engagement with frame 22 or 23, The action of the springs I23 any of the rollers 45, thereby permitting the is to tend to rotate shaft‘ I I8 counterclockwise sheets to be carried past platform ‘M. This move as viewed in vFigs. 1 to 3 thus tending to wind 25 ment of hand lever I32 ‘simultaneously causes cables I I4 around drums II‘I. partial, rotation of shaft 95 through the link and Onrthe outside of frame 22 a bracket I25 is lever connection I52, I55 thereby lowering strip fastened to the frame by bolts E26. This bracket per ?ngers I58 below the sheet path. At the supports a rotatable stub shaft IZ‘I to ‘the inner same time link i3£l and lever I29 impart a partial end of which is keyed a large gear I28 whose 30 rotation to large gear I28 which, acting through teeth mesh with the small gear E28 secured to small gear I28 and shaft IIB causes counterclock shaft II8. To the outer end of stub shaft I2‘! wise rotation of drums II‘I thereby winding up a is keyed a lever I29 to which is pivotably con part of the cables H4 and moving bar I98 and nected one end of a link I30 whose other end tapes I87 into the dotted line position of Fig. 4 extends through a pin I3I pivotably mounted in 35 where they support the sheets in their travel hand lever I32, Nuts I33 are provided to ad~ justably secure link I30 to pin I3I and lever I32 is provided with a handle I34. Lever I32 is keyed to a shaft I35 which is rotatably journaled in frames 22, 23 and has se cured thereto a bifurcated lever I 36 which piv otally carries between its bifurcations on pin I31 a link I38. Lever I33 is formed'with a projecting over the platform ‘I4. ‘ If it is desired to move ‘the parts from inopera tive to operative position the ‘hand lever I32 is moved clockwise until abutment I39 of lever I39 strikes abutment I49 of link I38. This movement is transmitted in the reverse direction through the connections just mentioned to cause cam I49 to open grippers 39, stripper ?ngers I56 to strip abutment 539. which is adapted to engage abut the sheets from the grippers, and tapes I9‘! to ment I48 of link'I38 to limit movement of the 45 be withdrawn away from sheet supporting posi lever I36 and shaft I35 in one direction when tion, as shown in Figs. 2 and 4. . ‘ lever I36 and link I38 are substantially in align When it is desired to remove a pile of delivered ment with each other. ' sheets from the machine without stopping the The other end of link I38 is provided with a latter the operator moves hand lever I32 quickly rotatable stud I4! having a shoulder portion I42 50 to its Fig. 2 position choosing such a time in the and a reduced extension I43 which extends press cycle as is required to cause the cam I49, through slot I44 in a bracket I45 which is piv stripper ?ngers I56 and tapes ID‘! to move into otally mounted On tie rod I48 supported in frames proper position after the leading edge of one 22, 23, Extension I43 of pin I4! is threaded and sheet has passed the stripper ?ngers and before carries a washer I41 and clamping nut I48 by 55 the leading edge of the next sheet reaches these which bracket I45 is clamped against shoulder ?ngers. Thereafter all subsequent sheets will be I42 of pin I4I. By means of the slot and clamp deposited upon the auxiliary platform ‘I4. As ing arrangement just described the operative po soon as all sheets not deposited on platform ‘I4 sition of bracket I45 may be adjusted to suit have been deposited in pile 5B the platform 52 conditions. A cam I49 is secured to bracket I45 60 is lowered to the floor and removed from the by screws I59 and the parts are so arranged that press in the usual way. An empty platform is cam I49 lies in the path of travel of the cam then placed in the press and the cables 6E, 61 are rollers 45 by which the gripper ?ngers 39 may be drawn up to raise the platform into sheet re opened. As shown in Fig. 2 the cam I49 is in ceiving position. When the main delivery is thus operative position and will function to open each 65 made ready for a new pile, the operator moves set of grippers as it passes the cam. lever I32 quickly back to its Fig. 3 position again ' Hand lever I32 carries a second stud I5l which choosing a proper time in the cycle of the ma pivotally supports one end of a link I52 the other chine. Platiorm ‘I4 is then withdrawn from the end of which passes through noddle pin I53 and machine on its wheels ‘I5, the accumulated sheets is adjustably clamped thereto by nuts I54. 70 are removed, and the emptied platform replaced Noddle pin I53 is pivotally held by a lever. I55 in position ready for use the next time a main which is keyed to shaft 95. Secured on shaft 95 pile is to be removed. ' at positions corresponding to the spaces between The main delivery gripper opening cam 59 grippers 39 are stripper ?ngers I56, any desired preferably remains always in operative position number of which may be provided, and two of 75 as shown so that whenever a sheet is conveyed to 2,406,936 8 ing to the desire of the press operator, said last the high level of the conveyor it is deposited on the main platform. At other times the grippers ~mentioned means comprising a cam for opening said grippers, ?ngers for stripping sheets from said grippers, tapes adapted to occupy a position This application is a continuation of applicant’s original application, Ser. No. 412,390, ?led Sept. Cl over said second platform to support sheets in merely open'and close without depositing ‘sheets. 26, 1941. their passage thereover, and a hand lever opera tively connected to said cam, ?ngers and tapes for manually placing the same into and out of ' The invention is not to be restricted to the de tails of construction shown but is de?ned by the position for depositing sheets on said second plat following claims: Having thus described my invention, I claim: 10 .form. 4. In a machine of the class described, a sheet conveyor having upper and lower horizontal paths of travel, said conveyor comprising a plurality of grippers, a ?rst delivery platform, means for sets of sheet grippers, a ?rst delivery platform, opening said grippers to deposit sheets on said ?rst delivery platform, a second delivery plat 15 means associated with said upper path for open ing said grippers to deposit sheets on said ?rst form, and means for depositing sheets on said delivery platform, a second delivery platform, and second delivery platform or permitting convey means associated with said lower path for de ance of sheets to said ?rst delivery platform ac positing sheets on said second delivery platform cording to the desire of the press operator, said 1. In a machine of the class described, a sheet conveyor comprising ‘a plurality of sets of sheet last-mentioned means comprising a cam for open 20 or permitting conveyance of sheets to said upper path according to the desire of the press operator, ing said grippers, sheet supporting means adapted to occupy a position over said second platform to support sheets in their passage thereover, and connections enabling said cam and sheet support ing means to be placed into or out of position for depositing sheets on said second platform. said last mentioned means comprising a cam for opening said grippers, ?ngers for stripping sheets from said grippers, tapes adapted to occupy a position over said second platform to support sheets in their passage thereover, and connections enabling said cam, ?ngers, and tap-es to be placed 2. In a machine of the class described, a sheet into or out of operative condition simultaneously. conveyor comprising a plurality of sets of sheet 5. In a machine of the class described, a sheet grippers, a ?rst delivery platform, means for conveyor having upper and lower horizontal paths ‘opening said grippers to deposit sheets on said 30 of travel, said conveyor comprising a plurality of ?rst delivery platform, a second delivery platform, sets of sheet grippers, a ?rst delivery platform, and means for depositing sheets on said second means associated with said upper path for open delivery platform or permitting conveyance of ing said grippers to deposit sheets on said ?rst sheets to said ?rst delivery platform according to the desire of the press operator, said last-men 35 delivery platform, a second delivery platform, and tioned means comprising a cam for opening said means associated with said lower path for de conveyor comprising a plurality of sets of sheet grippers, a ?rst delivery platform, means for opening said grippers to deposit sheets on said ?rst delivery platform, a second ‘delivery‘platform, sheets in their passage thereover, and a hand positing sheets on said second delivery platform grippers, traveling tapes adapted to occupy a or permitting conveyance of sheets to said upper position over said second platform to support path according to the desire of the press operator, sheets in their passage thereover, and connections enabling said cam and tapes to be placed into or 40 said last mentioned means comprising a cam for opening said grippers, ?ngers for stripping sheets out of operative position for depositing sheets on from said grippers, tapes adapted to occupy a said second platform. position over said second platform to support 3. In a machine of the class described, a sheet and means for depositing sheets on ‘said second delivery platform or permitting conveyance of said sheets to said ?rst delivery platform accord lever operatively connected to said cam, ?ngers and tapes for manually placing the same into and out of position for depositing sheets on said sec ond platform. ARTHUR B. WOODRUFF.