Patent GB-297611-A (GB)
Title: Improvements in wire stapling or stitching mechanism particularly for use with printing machines
IPC: B27F7/23
Filed: 1927-12-31
Abstract: 297,611. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Dec. 31, 1927. Associating and cutting apparatus; stapling-devices.-A wire-stapling mechanism, particularly applicable to printing-machines, comprises a rotary carrier for staple forming and inserting devices and sheet-taking devices, and a wire supply mounted on and outside the carrier to rotate with it. As shown, a rotary cylinder A, Fig. 1, carrying a pair of stapling units S, S<1> is supported on shaft heads B. B' mounted in suitable framing C. Each shaft bead carries a wire reel 1, the reels being secured by latches 7 on pins 2 mounted on brackets 3, 4 on the heads. Each wire is fed through a channel 11 in the shaft head and a guide 16, Fig. 3, by a pair of rolls 17, 18, passing to a staple-forming anvil 41 by a lower guideway 13. The rolls 17, 18 are geared together, the roll 17 is adjustable to vary the feed by a rod 23 extending to the outside of the cylinder, and the roll 18 is driven intermittently by a ratchet 27, pawl 31, and slide bar 35 reciprocated by a cam 39 mounted on the shaft head. The shaft 26 of the roll 18 is extended to the outside of the cylinder so that it can be turned for testing purposes or to feed in the end of a new wire reel. The anvil 41, Fig. 4, is mounted on a rock shaft 42 and is held in staple forming position by a shoulder 550 on a latch 55 pivoted on a stud 54 and having a roll 57 in the path of a cam 58 fixed on the main operating shaft 59 for the staple forming and inserting units. The shaft 59 carries a roll 60 engaging a cam 61, Fig. 3, loose on the shaft head B. The cam 61 is secured by projections to the cam 39 and also to a gear 64 loose on the shaft head. The gear 64 may be secured by bolts 65 to the framing C, in which case, when the cylinder A is driven through the gear 14, the wire feeding cam 39 and the stapling cam 61 will operate once for each revolution of the cylinder. If, however, a printed product is to be collected, the bolts 65 are removed, and the gear 64 and cams 39, 61 are driven at half the speed of the cylinder A by gearing 640, 88, Fig. 1, the stapling units then operating at each alternate revolution of the cylinder. Each stapling unit comprises a pair of guideways 44, 45 for a pair of bending plungers 69, 70 operated by a forked lever 66 fixed on the shaft 59. The plunger 69 carries a knife 700, Fig. 3, co-operating with a disc cutter 71 to sever a staple length of wire just before the plungers 69, 70 bend the staple over the anvil 41. A driving plunger 770 operating between the bending plungers is operated by an arm 75 fixed on a shaft 73. The latter shaft is driven from the shaft 59 through a connection 80. To move the anvil from the path of the driver, the bending plunger 70 has a roll 82, Fig. 3, moving in an angular cam path in a cam 53 fixed on the shaft 42, the groove being shaped to give a sharp movement to the anvil. At the same time, the cam 58 operates to move the latch lever 55. The cylinder A may co-operate with a second cylinder carrying clenching abutments, and may have removable portions to give access to the stapling units. In operation, the wire is fed by the cam 39, the bending plungers are moved by the lever 66, the anvil is removed by the cam 53, and the staple driver is operated by the arm 75. In the construction shown the cylinder A carries a web cutter 91, Fig. 4, cooperating with an abutment on the clenching cylinder, and collecting pins 84 operated by a gear 87 mounted and driven at reduced speed similarly to the gear 64.