Patent GB-236451-A (GB)
Title: Improvements in machines for applying metal binding to the edges or corners of material
IPC: B42C7/00
Filed: 1924-12-01
Abstract: 236,451. Wachs, M. A. Dec. 1, 1924. Attaching spiked plates, strips, and the like.- A machine for attaching metal binding elements to the edges or corners of pocket books and like articles comprises a base to support the article with the binding element on its edge, a gripper movable on to the article to hold it in position, means to move the binding element to flush its bend with the edge of the article, and a presser to clinch the binding element on the article. The element is U-shaped in cross-section, with a bend C, Fig. 3, and may have attaching spurs F on bent-away portions D of its edge. The grippers, flushing means, and presser are actuated successively by a common actuator comprising a hand or foot operated arm 16, Fig. 1, pivoted to the end 13 of an arm 11 on the base 10 supporting the article. A recess 23 in the arm 16 co-operates with the hemispherical end 22 of a vertical plunger-rod 18, which is guided by a pin 25 on a head 24 on the rod 18. The rod 18 is normally raised by a spring 21 acting against a pin 20 and pressing a collar 19 on the rod against the under side of the arm 11. The presser comprises a jaw 27, Figs. 1 and 5, on the head 24, and the gripper 29 is arranged adjacent the jaw 27, is normally pressed down beyond the jaw by a spring 36, and is guided by a pin 31 passing through the collar 19 and the arm 11 and carrying a side stop-pin 35. A plate 40 sliding on the base 10 and carrying a cross-bar 41 with rods 42 extending through the arm 11 is normally pressed away from the binding element B by springs 45, but is pressed against the element B to flush its bend C with the edge of the article A by a cam surface 47 at the centre of the bar 41 co-operating with a cam pin 49 on the head 24. On the descent of the plunger 18, the gripper 29 descends to hold the article A, the plate 40 then flushes the element B with the article edge and the jaw 27 then descends to clinch the element B by bending down the parts D and embedding the spurs F in the article. In order to adjust for different thicknesses of the material of the bend C of the element B, the pin 49 is adjustable by a screw 51 with lock-nut 52. The descent of the arm 16, plunger 18, and jaw 27 is limited by a stop-pin 65 adjustable in the arm 11 in order to adjust for different combined thicknesses of the element B and article A. Adjustable flanged gauges 58 and leaf-spring clamps 59 are provided to position and hold the article A. The machine is shown applied to ornamental corner-clips, the jaw 27, the gripper 29, and the edge of the plate 40 being V-shaped, but, in applications to straight-edge clips, these parts are straight and the stops 58 and clamps 59 are correspondingly positioned. In order to compensate for different thicknesses of the article A at adjacent edges of a corner, levers 68, Figs. 1 and 11, are provided, mounted for horizontal and vertical movement on pins 69 on the base 10, coiled expansion springs 70, 72 being arranged around each pin 69 between the base 10 and the lever 68 and between the lever 68 and a crosspin 71 on the pin 69. The upper spring is arranged to retract the lever 68 to inoperative position against the gauge 58, and each lever 68 may be swung into engagement with a stop 74 to position an arm 66 on the lever above the thinner edge of the corner of the article A and in the path of the jaw 27.