Patent GB-175129-A (GB)
Title: Button stapling machine
IPC: A43D100/08
Filed: 1920-12-01
Abstract: 175,129. Fairweather, W., (Singer Manufacturing Co.). Dec. 1, 1920. Stapling. - In a buttonstapling machine, the buttons are fed into a hopper 59, Fig. 1, in which revolves a feed wheel 57 on the spindle 58, having V-shaped teeth 60, which gather the buttons and deposit them on the inclined feeding shoot 62. The shoot has a groove in which depend the shanks of some of the buttons. Those not so positioned are swept back into the hopper by a finger 74 secured to the vertical rock shaft 75 journaled in a. bearing 76 on the hopper 59. The sliding plate 22 carrying the cutting and bending means for the staple has a plate 34 attached at right-angles to the rear end, which moves a screw pin 78 carried by a crank arm 77 to rock the shaft 75 and operate the finger 74 at each stroke of the plate 22. A spring 79 tends to restore the shaft 75 to its normal position. The buttons leave the feeding shoot 62 with their shanks hanging downwards and slide by gravity down the shoot 63 until arrested by the forked finger 71. The shoot cover plate 69 has a groove 69<1> to allow the passage of buttons in which the shank is passed through and clenched on top of the button. A stud 97, Fig. 5, is secured to the machine frame 12 and serves as a pivot for a system of rigidly connected levers 100, 99, operated by a roller 101 pressed to the cam 87 by a spring 102 which causes a button-feed finger 66 to ride over the end of the finger 71 and press a button forward to the head 39 ready to receive the staple wire. The wire for forming the staples is fed from a spool to an arm 117, Fig. 1, having a pawl 128 co-operating with a stud 130 to hold the wire. A plate 131 attached to a bracket on the machine frame 12 carries a similar pawl and stud. The wire-feed arm 117 is pivoted to a. bracket on the frame 12 and has a cam-roller working along the edge of a cam disc 118, Fig. 7, rotating on the main shaft 18. This disc 118 has a stud' working in a slot (not shown) in a disc 112 rigidly fixed to the shaft 18, allowing play to prevent withdrawal of the wire before the correct length is sheared off. The wire passes through a bush into the button shank. The cutting mechanism consists of a bar 27, Fig. 8, slidingly held on the plate 22 by guide ribs 29 on the staple-setting plate 24, Fig. 14, attached to the plate 22 by screws. Pressure on the treadle pulls down a rod 4, Fig. 6, and rocks the triangular lever 17. A link 21 pivoted to the lever 17 slides the plate 22 forward carrying with it the bar 27 by means of the catch 36, Figs 6 and 8. The elements 30 of the bar cut off a length of wire threaded through the button shank and bend it to a U-shape round the head of the pivoted arm 37, in a groove 41 of which the button shank rests, and carries the staple in grooves 29. Rigidly connected to the shaft 38, on which rocks the arm 37 carrying the head 39 supporting the button, are arms 103 and 109, Fig. 7. The arm 103 has a bent end 104 resting normally on a button. If the machine fails to place a button on the head 39 in position to receive the staple wire through the shank the arm 103 drops till its end 104 rests on the head 39 causing the arm 109 to drop also and rock the lever 114 pivoted at 115, bringing its end 116 in the path of the wire-feed arm 117. and stopping the wire feed. The lever 114 is removed from the path of the wire-feed arm 117 by means of the cam face 111 attached to the disc 112 and arms 110 and 106 rigid with the arm 109. A roller 54, Figs. 6 and 8, on the catch 36 working in a cam-groove 55 in the machine frame, lifts the catch out of engagement with the notch 31 in the rod 27. Simultaneously the head 39 is lowered and withdrawn from the staple by the engagement of the incline 51<1> with its own incline 51<11>. The plate 22 moves forward until the rod 27 carrying the staple contacts the shoe upper placed on the die 26, Fig. 1, secured to a bracket 53. The continued movement of the slide 22 compresses the spring 35 and brings the plate 24 against the wire staple forcing it out of the grooves 29 through the upper into curved recesses in the die, clenching it' as shown by the dotted lines in Fig. 15. A spring. returns the parts to their normal position by lifting the rod 4.