Patent GB-755338-A (GB)
Title: Improved binding apparatus
IPC: B42C9/00
Filed: 1954-03-09
Abstract: <PICT:0755338/III/1> <PICT:0755338/III/2> <PICT:0755338/III/3> <PICT:0755338/III/4> Apparatus for binding sheets together comprising a sheet support, sheet aligning means, pressure applying means to press the sheets together close to their binding edges, a container, automatically closed when not in use, for flexible-film-forming two-phase liquid and a device for applying the liquid to the binding edges, comprises also a means for replenishing the dispersion phase of the two-phase liquid.  Sheets 2 are placed on a slope 1A with edges aligned against ribs 4A on a cylinder 4 rotatably mounted and enclosed in a container 5 for latex solution so as to be partly below the liquid level 7.  The container 5 has an opening 5A for the sheets 2, normally closed by a curved plate 5B engaging a rubber strip 5D at the upper edge 5E and a lip 6 at the lower edge.  The plate 5B is freely mounted on a shaft 3A journalled in bearings in the casing 1 and has extensions 5c engaged by lugs 3D on an operating handle 3 fixed to the shaft 3A so that movement from the normal position shown in Fig. 3 to the dot-dash position moves the plate 5B away and sheets 2 can be put in position.  On return of plate 5B, the sheets 2 are gripped between the lip 6 and the edge of the plate.  The extensions 5C are hinged to rods 9 and urged by springs 9B to close the plate 5B, abrupt movement being cushioned by dashpots 11.  The cylinder 4 is of porous material, such as unglazed porcelain treated with collodion, and contains water 8 for replenishing the water evaporated from the latex solution.  The cylinder 4 is refilled through holes 20 in a hollow member 16 running therethrough, having at one end a filler fitting 19 closed by a screw cap 19A.  As shown in Fig. 7, the cylinder 4 has ribs 4A for aligning the sheets 2, then, as the cylinder is rotated, oblique edges 21 which scrape past the edges of the sheets to part them slightly and rows 22 of alternate projections 22A and depression 22B which hold the adhesive and apply it to the binding edges.  Rotation of the cylinder is effected by forward movement of the handle 3, as shown in dot-dash lines in Fig. 4, when an ear 3c, one at each end of the handle, engages a toothed segment 12 rotatable about the shaft 3A and meshing with a toothed wheel 14 secured to the cylinder 4, the segment 12 being pressed to its normal position by a spring 12A and the handle 3 and cylinder 4 also being returned thereby.  On removal of the sheets 2, excess adhesive is removed by pressure between the plate 5B and lip 6 and the plate 5B is returned to closing position by the spring 9B.  The top part of container 5 is removably held in position by a springpressed plunger 23A released by a catch 23C. The container is supplied with adhesive from a self-sealing bottle 24 having a mouth 24A closed by a ball 24B under the action of a compression spring 24C, the bottle being screwed into a socket 25 and the ball 24B then being automatically released by a pin 25A, so that the liquid flows through a duct 25B to the container 5.  According to the Provisional Specification, the apparatus may comprise the two-phase liquid container and means for replenishing the dispersion phase, not particularly forming part of the book or sheet binding apparatus.  Specification 739,387 is referred to.