Patent GB-689774-A (GB)
Title: Machine for glueing the back-edges and applying covers to pamphlets, books or the like
IPC: B42C11/02
Filed: 1948-06-09
Abstract: 689,774. Bookbinding. BERTELLO, E. June 9, 1948. [July 18, 1947] No. 15587/48. Class 16. [Also in Group XVI] A machine for gluing the back edges and applying covers to pamphlets, books or the like comprises a conveyer chain C fitted at intervals with resilient clamps 13, 14 which hold the books and carry them to devices effecting the various operations, the chain C running on four chain wheels, three of which, 12 12<SP>1</SP>, 12<SP>11</SP> are guiding wheels and one driving wheel 11 coupled with a motor 1, transmission member 2 and gear system 3 - 10,. including a toothed wheel 51 with a toothless segment or portion K which stops the movement of the chain periodically so that each operation of the machine may be performed. The various operations are also driven from motor 1 through the gear wheel 5 secured to and driving a main shaft 43 continuously and a secondary shaft 25 geared to shaft 43. The clamps 13, 14 each comprise a jaw fixed to the chain C and a movable jaw provided with a roller 16, the movable jaw being opened and closed by curvilinear profiles, indicated at 15, as the roller 16 moves thereover. The book is initially placed in a hinged clamp 17, one of which is opened and closed by an eccentric on shaft 25 through a curved lever and the other jaw simultaneously given an upward movement by a further eccentric acting on a pivotally jointed parallelogram to one side of which it is secured. The book is released during the stopping phase to a pair of clamps 13, 14 which carry it to the operating positions and finally deliver the covered book to a collecting clamp 83, operated by a lever 84 with a hub 85 acting on an eccentric 86 on shaft 43, which conveys the book to lean against an ejector 78 running on guides transversely to the longitudinal axis and operated by a rigid transmission system 80, 80a, b and c and moving by means of a hub member 81, with a helical groove 82, secured to shaft 25 to push the book onto a discharge shute. Gumming. The book held by clamps 13, 14 passes over gumming wheels 23, 24 (Fig.1), in a glue tank 34, on the shafts of which are wheels 29, 31 (Fig. 2) which are rotated in opposite directions from shaft 25 through a chain reduction system 26 and gearing 27, 28 and 30. An electrical resistance 32 controlled by switch 33 heats the glue in tank 34. Folding and applying covers; drying glue. A cover 61a is placed by suction cups 37 on a vertically movable wedge 58 and is folded onto a book 61b by inwardly movable plates 52, 53, with spaces 60 for the wedge 58, operated by levers 54, 55 pivoted at 54a, 54b, 55a, 55b by connections from an eccentric 56 on a cross shaft 57 operated by a crank lever on the shaft 43. The cover 61a is pressed against the sides of the book 61b, still held by clamps 13, 14, by a clamp having a, fixed jaw 61 and a movable jaw 61<SP>1</SP> movable by a lever 62 connected to the main shaft 43 by a cam 63 and linkage 64 having a return spring 65. While the cover and book are pressed by jaws 61, 61,<SP>1</SP> an electrical resistance 59 heats the wedge 58 to dry the glue. The clamps 13, 14 then carry the covered book a short way to release the book to the collecting clamp 83.