Patent GB-191018977-A (GB)
Title: Improvements in and relating to the Manufacture of Boxes.
Inventor: NASMITH JOHN WILLIAM
IPC: B27M3/36
Filed: 1910-08-12
Granted: 1911-08-10
Abstract: 18,977. Nasmith, J. W. Aug. 12. Stapling. - In t h e manufacture of cleatreinforced wire - bound boxes, the cleats are carried forward upon the upper faces of the sheets forming the top, bottom, and sides of the box, the sheets being engaged by feeding - mechanism. Cardboard sheets a r e creased to form the raised ribs, which are utilized in spacing the cleats. The sheets are carried forward to the feeding-means by frictional contact with constantly-running aprons, belts, or revolving brushes. Separate sheets for the top, bottom, and sides of the box, sheets of cardboard stitched together, or integral sheets of cardboard, are laid upon constantly-running belts 21, the upper surfaces of which are slightly higher than guides 17 within which the sheets are placed. Thus they are carried forward to feeding - means which comprise transversely adjustable knurled rollers 4, upon a driven shaft 2, against which the sheets are pressed by rolls 5<1>. The battens or cleats 19 are laid upon the upper faces of the sheets 16, either with their ends just touching or spaced apart; in the latter case, if the sheets are of cardboard, they may have creases 18 previously formed therein, which serve to space the battens. The binding- wire 20 is drawn by the sheets from reels placed on the floor beneath the machine. A bar 10 fixed to the machine frame carries the staple-clinching anvils. The sheets are gripped by a second set of rollers 3 and pressers 5 after receiving the staples. A binding-wire shearing-blade 26 is drawn down by a latch after a box blank is completed, and is returned by a spring 27 on the release of the latch. The staple-making devices are carried by brackets A on a bar 11, and include wire-feeding means 68, 68<a>, shearing- means comprising an eyelet 64 and an oscillating blade 60, a staple guide and former consisting of two plates 44, 45 screwed together, and a former-finger 51 forming part of a member 56 oscillated by a crank-pin 57. The wire-feeding means is actuated by a latch 74 carried by a bracket C moving with a bar 12, to which bar is also secured a bracket B, in which is adjustably screwed the staple-driver 46 working in grooves 44<1>, 45<1> in the plates 44, 45. The shearing-blade 60 and the crank-pin 57 are coupled to down rods 62, 58, respectively, which pass through holes in the bracket Band carry adjustable lock-nuts which, by contact with the bracket B, actuate them as it moves downward. The wire is fed through flared openings in line with the staple-forming grooves 47 in the plate 44, and the former-finger 51, which works in an opening 50 in the side of the plate 44, at the time the wire is sheared is actuated to press it down these grooves, openings R in line with the grooves allowing the wire to be properly bent. The finger 51 remains in this position until the driver 46 rises to force the staple upward, and prevents the latter from falling sideways until it is held by projections R<1>, in the guiding-grooves. The finger 51 is eventually pushed aside by the driver and retained in position by a leaf spring engaging a flat on the member 56 until the rod 58 again depresses it. The staple-spacing mechanism described in Specification 7876/09 is preferably employed with the mechanism above described. Specifications 3561/05 and 21,154/08 are also referred to.