Patent GB-189708739-A (GB)
Title: Improvements in Machines for Making Book Covers.
Inventor: JACOBS ARTHUR IRVING
Filed: 1897-04-06
Granted: 1897-10-09
Abstract: 8739. Jacobs, A. I. April 6. Glueing. -Relates to a machine for making book covers, of the kind described in Specification No. 1454, A.D. 1894. The front portion of such a machine is shown in section in Fig. 4. The covering-fabric is cut out in any desired manner, and fed by hand to a cloth-carrying segment I which is mounted loosely upon a shaft 3 oscillated by means of a segmental rack. This rack engages with a toothed wheel on the shaft 3, and is oscillated by the action of a cam on a shaft A. Upon the shaft 3 is a toothed wheel 11 which gears with a wheel 12 upon the shaft of the glue roller H', mounted within a removable glue tank H. Superfluous glue is removed from the roller H' by adjustable scrapers 6, 7. The tank H is heated by water or steam introduced into a tank H<1>. Grippers in the form of short hooks are mounted upon a shaft 9, and are arranged to be opened by a spring. A gauge comprising a set of adjustable fingers mounted upon a rocking shaft h serves to indicate where the fabric should be placed on the segment I; the shaft h is actuated by means of an arm h<1> and a stop l, carried by a wheel K. The segment I is detachably connected to the shaft 3 by mechanism which is thrown into or out of action by the attendant who releases or pulls b a c k a spring-controlled bolt carried by the wheel 11. The means for carrying the glued fabric away from the segment I are somewhat similar to that shown in Specification No. 1454, A.D. 1894. A crossbar L is connected to bands l, l<1> which pass over pulleys K, rotated first in one direction and then in the other by means of toothed wheels g, g<1>. When the bar L has been carried by the bands l, l<1> up to the segment I, the bar is locked by a special mechanism so that, although the bands may travel a little further, owing to the action of a frictional connection between the bands and bar L, yet the bar remains stationary. When the bands move in the opposite direction, the glued fabric is seized between grippers n mounted on the shaft m, and fingers o carried by the bar L. The glued fabric is carried on to a platform P carried by a vertical rod P' which has been raised by means of a cam on the shaft A ; the base 16 of the platform P is secured adjustably to the upper end of the rod P<1>. The platform is provided with horizontally-adjustable blocks 25 which can be moved as desired; to obtain a support of sufficient size for the cover. Referring to Fig. 5, which shows a sectional view of the rear part of the machine, the cover boards 80 are drawn singly from hoppers 76, by slides 81 having yielding tongues or catches which engage with the back edges of the lowest boards. The slides are connected to bands 85 passing over wheels 84, 86, and are drawn forward until the boards strike a stop which retains them in a position whence they are transferred to the glued fabric by mechanism hereinafter described. The hoppers are formed by vertical sides supported by bars 74 and 77 which are adjustable to suit cover boards of different sizes, and to vary the distance between the cover boards to suit different thicknesses of books. The back linings may be cut from a strip of paper 161 which passes between rollers V, W, lying between the cover boards, and is cut off to length by a blade 94. Circular cutters 96, carried by the rollers V, cut the strip to the correct width. The rollers Ware rotated to an extent adapted for feeding the proper length of paper for a back lining by a special mechanism. The covers and back lining are lifted by means of suction tubes 129, 130, Fig. 4, connected to a hollow arm N<1> which is mounted upon a vertical shaft N capable of being raised and lowered by means of a lever E<2> and cam E. The arm N' is in communication with an annular chamber surrounding the shaft N and connected to a pump by a tube. When the cover boards and back lining have been raised, the arm N' is revolved through two right-angles, by means of a rack E' engaging with a pinion 125 on the shaft N, and the cover and lining are laid upon the glued fabric and pressed upon the latter so as to push down the platform P. During this operation, the edges are turned over and pressed down by edge turners similar to those described in Specification No. 1454, A.D. 1894. There are movable blocks for folding the fabric at the corners of the cover, and any glue or adhesive material is removed from the blocks by fixed scrapers 36, Fig. 4. The cover is next transferred by a sliding bar 40 to a finishing-press in which the cover is pressed between an india-rubber bag, containing water, and a platen actuated by toggle-levers. A series of rotating toothed discs discharge the finished covers from the press.