Patent GB-206955-A (GB)
Title: Machine for automatically binding sewn books
IPC: B42C11/04
Filed: 1922-08-30
Abstract: 206,955. Ledeuil, J., and Ledeuil, J. Aug. 30, 1922. Bookbinding - machines. - In bookbinding- machines wherein the sewn signatures to be glued and covered are received in spring grippers around the periphery of a segmental wheel which is intermittently rotated by a pawl and ratchet, the grippers are automatically opened to receive and release a book by push-rods pivoted to and actuated by a collar having a circular oscillatory movement and a rotating glueing roller is given an independent angular rocking movement to maintain it in the vertical plane of the signatures in contact with it. Means may be provided to prevent a cover from being applied to a gripper not containing a book. The grippers comprise plates 5, 5<1>, Fig. 2, connected by rods 4, 4<1> carrying springs 6 which draw the plates 5 towards the segmental plates 3 of the horizontal wheel 1. A table 7 beneath the wheel at the feed station ensures the correct level of the back of a book in the gripper. The collar 20, Fig. 7, surrounding the axial shaft 2 of the wheel is rocked to and fro, in a plane below that of the wheel, by a link 19 operated by a cam 16 on a shaft 8, and through connecting rods 21 imparts a sliding motion to the push rods 22 within guides 23, pressing them against the rear plates 5<1> to open the grippers. In a single-feed machine with twelve grippers the push rods at the feed and delivery positions are spaced at 60‹ apart. By spacing them at 90‹ an intermediate push rod may be provided to operate at a second feed station. The segmental wheel is driven by a ratchet-wheel mounted beneath it upon the shaft 2, the operating pawl being actuated by a doublejointed connecting-rod and eccentric driven by the shaft 8. The backs of the signatures are glued by a roller rotating within a glue container pivoted at its base and rocked to and fro by a link operated by a cam u,pon the shaft 8. The glueing-roller is rotated by a flexible or cardan shaft at a speed less than that of the signatures to produce a wiping effect, preventing too great a deposit of glue. To prevent the formation of a seam of glue at the top edge of a book, a scraper is automatically lowered upon the roller when the edge of the book comes above it. To ensure that the segmental wheel is arrested in the correct position for a cover to be applied at each twelfth of a turn, pins 62, Fig. 15, are mounted upon adjustable eccentric pivots around the underside of the periphery, and are engaged in turn by a notch at tha end of a reciprocating bolt 60, which is pivoted to the cam 20 operating the push rods and moves within guides 61 on the machine frame. In a modification, the application of a cover to an empty gripper is prevented by a controlling device consisting of a pivoted arm which is pushed through an angle when a book within a gripper bears against it, thereby actuating a pawl which operates the rocking arm upon the pile of covers and also putting into engagement the vertical rod and its operating lever below the cover-receiving table. The covers are fed from a pile F, Fig. 10, by a roller 35 on an arm carried by a rocking lever 43 operated by an eccentric from an intermediate shaft 38. The top cover is fed upon a constantly rotating roller 36 and a roller 37 is lowered upon it by camoperated connecting-rod 44. The cover is conveyed by an endless belt 39 on to a table 41 where it is arrested by a stop 42, and at the same time a gripper containing a glued book V is positioned and arrested above the table. The table is raised and the cover applied by a vertical rod 47 operated by a cam-driven lever 46. The level of the table 42 carrying the covering sheets F is progressively raised by automatically operated cams 48<1> to compensate for the thickness of the sheets removed.