Patent GB-697053-A (GB)
Title: Improvements in or relating to book binding machines
IPC: B42C11/04
Filed: 1951-06-26
Abstract: 697,053. Bookbinding. CLYBOURN MACHINE CORPORATION, and DEXTER FOLDER CO. June 26, 1951. [July 12, 1950] No. 15174/51. Class 16. A bookbinding machine comprises a rotatably mounted carrier, means for rotating the carrier, book gripping means on the carrier to carry a book, with an edge free of the gripping means, in a circular path from a loading station to a cover applying station and then to a releasing station, means for applying adhesive to the book edge, means for applying a cover, at the cover applying station, against the adhesive on the book edge and pressure applying means on the book edge and pressure applying means located in the path between the cover applying station and the releasing station for applying rolling pressure progressively along the book edge with rotation of the carrier to firmly press the cover against the adhesive on the book edge. Referring to Figs. 1 and 2, the machine comprises a turret A intermittently rotated, by means of a Geneva drive B from a motor 210, about a central shaft 14 and carrying three bookgripping means 10 successively from a loading station C over an adhesive applying device F to a cover applying station D where a cover is fed by feeding means G, over a pressure applying device H to a releasing station E where the covered book drops onto a conveyer J, substantially tangential to the path of the grippers 10, which conveys the book through presser rolls K to form a crease in cover and delivers the book to a storage rack L. The turret A (Figs. 1,. 2 and 15) comprises cross braces 11, 12 secured to a sleeve 13 rotatable about the shaft 14, the grippers 10 being secured to the braces 11 and each comprising a crosshead 15 through which a rod 17 extends to bear against a spring 18 in a bracket 19 secured to a movable jaw 20 guided by rods 23, 24 in fittings 25, 26, on crosshead 15, a roller 39 on rod 17 bearing against a cam 38 on shaft 14 and held under the pressure of a spring 38a between the sleeve 13 and a rod 38b secured to rod 17, and the jaw 20 being moved by cam 38 to grip a book filler against a fixed jaw 27 adjustably mounted for different width books on threaded rods 28, 29, the cam 38 being arranged to hold the jaws 20, 27 closed from just after leaving the loading station C until they reach the release station E. At the loading station C, a book 36 is inserted back downwardly between the jaws 20, 27 to rest on a platform 40 where a switch element 41 is actuated to operate a microswitch 49, forming part of the electrical control system controlling the feed of covers, so that when no book is present in a gripper 10, no cover is fed thereto. As the turret rotates and immediately before the jaws 20, 27 are closed, the book is aligned by a pin 53, adjustably mounted in a slot 52 in each jaw. The adhesive applying station F comprises a roller 60, wide enough to maintain contact with the book back in its circular path, rotating continuously in a glue container immersed in a hot water tank 65 having an electric heater element controlled from a switch 67. A scraper box 80 is provided with wires 81 transversely of the book path, which break off any strips of glue. The cover feeding station G is controlled from the microswitch 49 which opens a solenoid valve 112 controlling a pneumatic line 113 connected to a suction pump, the other side of the valve being connected to a suction feed roll 114 for feeding a cover 107 from the bottom of a pile on a platform 115 onto endless driven belts 117, the cover being pressed onto the belts by fingers 118 and delivered onto plates 108, 109 at the station D where they are positioned by a stop 110. At the cover applying station D (Figs. 2 and 8), the jaws 20, 27 come to rest with the book 36 centrally positioned over the cover 107 on plates 108, 109. A presser foot 92<SP>1</SP>, urged upwardly by a spring 111 is carried by a pair of rods 90 extending through a frame member 92 and connected at their lower ends by a cross bar 93 vertically movable, by means of a connecting rod 94 carrying a roller 95 which engages a cam 96 on a shaft 97, driven from the main shaft 79, so as to press the cover 107 onto the book 36. By means of a second cam 98 and roller 99, a bar 100 is moved upwardly immediately after and returned immediately before the presser foot 92<SP>1</SP> to crease one edge of the cover 107, as shown in dotted line, the bar 100 being secured to a pair of rods 101 sliding in a collar 102 and pressed upwardly by a spring 105, the rods 101 being pivotally connected at their lower ends to an actuating bar 103, carrying the roller 99, pivotally mounted at 104 to the machine frame. The book filler 36 with cover 107 then passes over a roller 120 (Fig. 1) rotatably mounted in a yoke 122 and locked in position to exert firm pressure on the bottom of the cover 107 through the intermediary of a flat flexible plate 130 (Figs. 2 and 15) rotating with the book and the interposed by means of cams. The plate 130 curves downwardly at 133 to join a pair of rods 134, 135 extending through a bracket 136 on arms 137 secured to the rotatable sleeve 13. The rods 134, 135 are joined by a rod 138 pivoted through link 139 to an arm 140 pivoted at 141 to a fitting 142 secured to sleeve 13, the end of arm 140 having a roller 143 bearing first against a finger cam 144 pivotally mounted on shaft 145, which presses it inwardly to move plate 130 between the roller 120 and book 36 and then against a fixed crescent cam 149 to press it outwardly and move plate 130 back to its retracted position. The cam 144 is actuated by a rod 147 reciprocated by a cam 147a synchronised with cams 96, 98 to move cam 144 into position so that plate 130 is inserted beneath the cover at the cover applying station after the bar 100 and presser foot 92<SP>1</SP> have been removed. At the release station E (Figs. 1 and 15) the movement of roller 39 on cam 38 permits spring 38a to move the jaw 20 away from jaw 27 and the book falls into a guide shoot 161 having conveying surfaces 162, 163 to fold the cover against the book sides. A kick out arm 150 to ensure the fall of the book, has flared flanges 157, 158 to contact the book top and has a bifurcated inner end 151 hinged to a plate 153 on shaft 14 and a leg 154 with a roller 155 rolling on a cam surface 156 fixed to sleeve 13, the cam surface being flat except for a sharp edged dished portion corresponding to each gripper 10 which allows the arm 150 to fall downwardly by gravity, or by spring action if desired, to knock out a book, the arm then being brought up by the curve of the cam. The book is guided by shoot 161 onto the conveyer J which comprises a bottom endless belt 166, a chain 164 having a finger 165 to contact the side of a book and endless feed belts 170-170 which converge to grip the book and pass it between adjustably mounted presser rolls 180, 181, to crease the book near the back, and onto the book storage rack L. The storage rack L (Figs. 1 and 2) comprises wood slats 190 and a book stop 191 with upstanding side 192 against which the books are pressed by a kicker device to move the stop backwardly and leave room for the next book. The kicker device comprises a plate 206 pivoted to a crank arm 200 secured to a rotatable shaft 201 to which is also secured a roller 202 bearing against a rotating cam 203 shaped to move the plate 206 in and out at the delivery of a book on the rack.