Patent GB-305059-A (GB)
Title: Improvements in or relating to machines for use in the binding of books or other similar articles
IPC: B42C9/02
Filed: 1927-10-25
Abstract: 305,059. Taylor, H. Oct. 25, 1927. Bookbinding-machines.-A machine for binding books and the like is provided with means for forming tubular back-linings and applying them successively to the backs of books held within gripping-devices around the periphery of a drum or the like which is rotated intermittently to bring a gripper before a book-receiving station and convey it to gumming &c. devices. The paper strips 2, Fig. 1, from which the tubular backlining is formed, is drawn from a roll 3, passes around a guide roller 4 to a positively driven gumming-disc 6, and thence between two adjustable folding-bars 9 shaped in such a manner that the paper is curled into tubular form on passing between them. The tube thus fcrmed is drawn between rollers 10, 11 which flatten it and secure the adhesive portion, the upper roller 10 being driven by a coaxial pinion actuated by a rack and pinion 12a, 12<b>. The roller 10 also drives the roller 11 through an intermediate ratchet mechanism. The rack 12<a> is reciprocated by a crank 15 on a shaft 16, the flattened tube thus being drawn forward intermittently by an amount which can be varied by a screw-and-block 17, 18 controllirg the throw of the crank. The flattened tube is fed above the uppermost halting position of the book-carrier, and a length is severed from it by a guillotine cutter 19 co-operating with a stationary cutter 20, the cutter 19 being actuated by links 22, 23, and 24 (not shown) connected to a cam 21 on the shaft 16. When the adhesive-coated back of a book is disposed beneath the severed length of tubular lining pressure is applied to the latter by a presserbar 58, Fig. 3 (not shown), and co-operating side plates mounted on horizontally slidable bars 67, 67<a>. Upon further movement of the carrier the book is brought beneath a pressing-roller at the end of a spring-controlled lever, and the book is finally released at the point at which it was fed into the carrier. The carrier comprises a drum or cylinder 37, Fig. 4, provided with four diametrically opposite slots 38<a> each containing a bookclamping plate 40 mounted on one arm 39 of a bell-crank lever 39, 39a secured on a shaft 39b which carries an offset arm adapted during the rotary movement of the carrier to engage camplates which thereby operate the clamping-plate. A spring 41 connected to the arm 39a tends to hold the clamp closed. Intermittent movement is imparted to the drum by a central ratchet wheel 48 driven by a pawl 48<a> which is actuated by a lever 49 driven by a cam on the shaft 16. After each movement the drum is held stationary by a locking-device comprising a toothed wheel 53 co-operating with a cam-actuated rod 54 which is raised intermittently and its end inserted within the teeth of the wheel. The books 38<b> are fed singly by hand from a table 38 into the grippers. During the pasting of the book, and the pressing thereon of the back-lining, additional pressure is exerted by the clamping-plate 40 by means of cam plates disposed in the path of the clampactuating lever.