Patent GB-563703-A (GB)
Title: Machine for use in the manufacture of bullet sleeves
IPC: B21D51/54
Filed: 1943-05-03
Abstract: 563,703. Hoppers. WALTON, A. L. May 3, 1943, No. 6981. [Class 78 (i)] [Also in Group XXII] Bullet sleeve blanks, that may be produced by cutting up tubes have all the finishing operations performed by one machine instead of as separate steps. Blanks loaded into a triangular hopper 1, Figs. 1 and 4, pass through a cut-away piston 3 into a tube 2 that closes the hopper, which is supported by arms 16 from pivots 9a on the frame and by a link 17 pivoted to a connecting rod 18 pivoted to a bar 21 on a tube 20 and to a crank-pin on a worm-wheel 22. The tube 2 has an arm 7 linked at 8 to arms 9 pivoted at 9a and connected at 10 to an arm 12 having a roller 14 resting on a cam 15 on the shaft 24 that drives the worm-wheel and is driven at 55 from the cutter spindle 50 itself, but driven at 54 from an electric motor. The resulting combined movement of the tube 2 and hopper facilitate the passage of blanks into the tube for delivery by a flexible tube 19 to the tube 20 itself reciprocated in its supports by the connecting rod 18. A sleeve 28, sliding on the tube 20 is linked at 30 to an arm on a rock-shaft 32, oscillated by a cam 35 carried by the wormwheel. Pivoted fingers carried by the sleeve 28 project through slots in the tube 20 and have pins engaging a fixed cam plate so that the blanks are alternately gripped and permitted to feed forward under gravity. The final section 20a, Fig. 10, of the bore of the tube 20, is of reduced diameter and the end of the tube supports a plate 38 carrying jaw members 39 having rollers 42 running between a fixed plain bar 43 and an adjustable cam plate. Recesses in the jaws form a continuation of the bore 20a and grip a blank during reaming by a bit 56 carried by the spindle 50, the end of the bore being countersunk by a bit 56a projecting into a plate of the bit 56. On movement of the tube 20 to the left in Fig. 10, the jaws release the blank and a pawl 47 entering a slot let in the tube engages the next blank pushing it into gripping position and ejecting the previously held blank that falls into a tube 66 flexibly connected at 67 to a further tube 68 coupled at 81 to reciprocate with a tube 79 similar to the tube 20 and coupled to be reciprocated by it through a rod 75. A spring 76 provides for the arrest of the tube 79 when the blank carried by it contacts the stop 94 during the turning of the nose by a cutter 58 carried by a cutter head 57 on the spindle 50. The cutter is adjusted at 62 and clamped at 60. A pair of feed fingers 70 are mounted on a bearing 69 for the tube 68, are pressed together by a spring 72 and pass into slots 73 to feed the blanks along the tube 68 to an upstanding section 68a, reverse motion being prevented by a pawl 82. At the top of the tube 68a the blanks fall into a down tube 86, being thus turned end for end. A cam-operated lever 88, Fig. 1, is linked to a lever 92 connected at 93 to a sleeve sliding on the tube 79 and carrying feed fingers similar to those carried by the sleeve 28. A pawl 80a similar to the pawl 47 and blank gripping jaws like the jaws 39 are also provided to hold the blanks during nosing and secure their subsequent ejection from the machine. The cutter spindle carries a fly-wheel 64, and is mounted in ball bearings.