Patent GB-400193-A (GB)
Title: Improvements in or relating to bookbinders' presses
IPC: B42C13/00
Filed: 1932-01-13
Abstract: 400,193. Bookbinding- presses. DRAPER, W. H., Winterfield, Paulton, Bristol. Jan. 13, 1932, No. 980. [Class 16.] A bookbinding-press for use with books provided with outer cases or covers comprises a plurality of pressing units mounted for intermittent travel in an endless path in a frame in such manner that each unit in turn is brought into a position where it is fflled with books and operated upon to apply pressure to the books, and where, when the unit subsequently arrives again at this position, the pressed books are removed. Each press unit frame comprises a front cross bar 6, Fig. 1, two side bars 7, to which are attached slide bars 12, rigidly attached thereto, a movable rear cross bar 8 notched at the ends to fit over and slide on the bars 12, and a number of movable partitions 9 similarly notched and also adapted to slide on the bars 12. The bar 8 and partitions 9 may be connected together by lazy-tongs mechanism anchored to the bar 6 so that the partitions move together and separate from each other to the same extent to form equal compartments ; or the bars 6, 8 and the partitions may be connected together by chains or strips of material. Each side bar 7 is provided with a toothed rack 13, and the crossbar 8 carries pawls 14 mounted in brackets 15 and adapted to coact under spring pressure with the racks to maintain the cross-bar in a locked position after pressure has been applied to the books. The pawls 14 are provided with apertured tail-pieces 14a through which pass a rod 16 carrying abutments adapted to disengage the pawls from the rack when pressure is applied to the rod 16. The press in which a number of such press units are employed comprises a frame 17, Fig. 5, carrying pairs of sprocket wheels 18 .. 22 over which run two endless intermittently driven chains 23. The press units x are pivotally attached to the chains at points 24 near their front ends and are provided with guide extensions 25 at their rear ends which are adapted to engage guides 26 .. 30 in the machine. At the loading position Y fingers 33, forming the same number of compartments for books as each press unit, are carried by slides 34 which may be drawn along supports 35 by means of cords &c. 36 to project the fingers into the compartments of a stationary press unit to deposit and support books in the latter until the books are gripped. The fingers 33 may be slidably mounted on side bars and connected together by lazy-tongs mechanism, chains, or strips of material as described with reference to the press units x. One or more units 37 each comprising a screwactuated plunger 38 may be operated by an electric motor 39 to apply pressure to the movable cross-bars of the press units x ; the motor 39 also effects the intermittent travel of the chains 23. In operation, after a press unit x has been filled with books the unit, which has been retained at the loading position Y by hooks 31 engaged over projections 32 on the unit, is released by operating hand-levers 40 and the chains 23 are set in motion to carry the unit around the machine frame back to the position Y where it is emptied and refilled. Scales may be provided to facilitate the correct setting of the partitions 9 and the fingers 33 to receive the books, and means may be provided for indicating the amount of pressure applied to the books or the extent to which they are compressed. If desired, the press units x may be provided with guide extensions 41 at their front ends to coact with a second set of guides in the machine.