Patent GB-191411667-A (GB)
Title: Improvements in Bookbinding Machines.
Inventor: RENNINGER PAUL JOSIAH
IPC: B42C5/04
Filed: 1914-05-12
Granted: 1915-05-12
Abstract: 11,667. Renninger, P. J. May 12. Reciprocating-saw machines; saws. - A book - binding machine comprises means for clamping the signatures and feeding them to devices for sawing pairs of inclined kerfs, and means for passing a binding - cord through the kerfs and round the intervening portions of the signatures. The signatures are clamped on a rotating feed-table, the kerfs being formed bv saws carried on a reciprocating head, and the table further rotated to bring the signatures to the binding-mechanism. Fig. 24 shows a form in which there are two pairs of inclined kerfs. The signatures are clamped on the table 69, Fig. 7, provided with antifriction devices 84. by means of clamping- members 82 which arc raised for inserting and removing the signatures by a cam 88, and are connected by adjustable springs 78 to the four arms of a spider 72 intermittently rotated by a mutilated bevelwheel 70. The signatures are alined by means of an adjustable gauge 295, Fig. 1, and gauges 108 carried by an adjustable bracket 104 on a plate 103 seating on a guide-plate 99. The plate 103 is raised by a pedal 96 through a chain connexion 97, and can be depressed by a cam 92 which engages a lug 93 on a lever 94 to which the plate is connected by a link 101. The saws 28-32 are fixed in holders 23 clamped in a head 20 carried in a cross-head 17 which is reciprocated by a crank 14. The saws are tapered, and for forming the kerfs 40, 43, Fig. 24, the upper teeth of the appropriate saws are offset. The lower ends of the saws pass through a stripperbar 45, Fig. 9, the end portions 46 of which are carried by spring-actuated uprights 47. The uprights 47 are provided with rack teeth 55 adapted to be engaged by the noses 56 of spring-actuated dogs 57, which are pivoted to the guide-boxes 49; the other ends of the dogs lie in pockets 61 in a cross-bar 52 and are engaged by cams 63 on the cross-head 17. The stripper-bar is pressed on to the signatures by springs 54 and is held in position by the dogs 57. On the elevation of the cross-head 17 the dogs 57 are engaged by the cams 63, thus releasing the stripper-bar, which is then raised by the engagement of the cross-head 17 with the cross-bar 52. The projecting edges of the signatures are supported in the sawing position by means of a cam-operated member 307. The debris from the saws is swept into shoots 289 by means of wipers 288. The shaft 10 is driven from the pinion 3 by means of an intermediate shaft 110 having pinions 111, 112, Fig. 5, gearing with pinions 7, 8, Fig. 7. A clutch 113 on the shaft 110 is carried by a lever 116 operated by means of a spring-actuated shifter rod 119 provided with a set collar 126 which is engaged by a lug 127 on the gear-wheel 134. The collar 126 is released from the lug 127 by partial rotation of the shifter rod by the operator; this rotation is suitably limited and is effected against spring action. The shifter rod is returned and the machine stopped by the engagement of the lug 127 with the collar 126 on the rotation of the gear-wheel 134. The shifter rod is provided with a beaded pin 122 which can be held bv a hook 123 for keeping the machine in continuous operation. The feed-table is alined by means of a locking-device consisting of a spring-actuated cam-controlled plunger which engages recesses in the underside of the feed-table.