Patent GB-309461-A (GB)
Title: Improvements in or relating to pulling-over or like machines
IPC: A43D21/18
Filed: 1928-01-05
Abstract: 309,461. British United Shoe Machinery Co., Ltd., arid Roberts, W. T. B. Jan. 5, 1928. Pulling-over.-Relates to machines of the kind described in Specification 248,071, wherein a plurality of power-operated pincers spaced along a side of a last have, for adjacent side pincers, means for applying controllably different pulling forces to the upper, and consists in (1) means whereby adjacent side pincers may be caused to lose their independence, (2) mechanism to render inoperative one of a pair of adjacent pincers, (3) devices accessible from the operator's position and giving pincer control heightwise of the last at both sides of the machine, the shoe being bottom down and toe away from the operator, and (4) means for constraining an adjacent pair of pincers to move together lengthwise and widthwise of the shoe. The mechanism is generally similar to that described in the prior Specification except that it is at a right angle thereto so that the shoe is positioned bottom down and toe away from the operator as described in Specification 150,424. The two updraw levers for an adjacent pair of side pincers each carry a laterally projecting lug 52, 53 overlying the other lever. There is, thus, only a limited amount of independent movement. Adjustable stops may be threaded through the lugs to render the amount of independent movement adjustable. The rock-shaft 25, described in the prior Specification as connected to dashpot, and to the up-draw levers by equalizing connections, also carries a lateral bar 45 to which are secured handles 47 accessible from the operator's position. These serve to bring the throat of a vamp central upon the lower part of the ridge of the instep or comb of the last. The usual up-draw lerver control handle 58 is connected in known manner to the rock shaft 25 as described in Specification 1866/12. Each of the rear up-draw levers may have a socket 56 from which projects, forwardly and laterally, a lever below the work and accessible to the operator. A similar handle may be secured to the upper part of each front updraw lever. Where no capacity for relative movement lengthwise of the last is desired, the casings 61, 63 of the pair of side pincers may be locked together by a T piece 73 on one engaging a corresponding slot in the other. In this case the guide 83 acts as usual on bevelled faces 85, 87 of the casings, but these are provided with lugs 91, 93 to cause the casings to take up their proper inoperative positions longitudinally and heightwise of the last. To render the rear pincer inoperative when desired, as described in Specification 174,316, this pincer is provided with a " cut-out " device comprising a pivoted latch 131 adapted to engage a lug 121 on the usual tripping mechanism comprising a pawl 115 co-operating with the latch 109 normally connecting the pincer bar 65 with the jaw-closing slide 105. The latch 131 has an arm provided with a knob co-operating with holes in a spring 137 to maintain the latch in the position in which it has been set. When the latch is. set to maintain the rear pincer inoperative, the pincer jaw 103 is in the open position. Should this be struck by the tack carrier block, it will yield and force the jaw-closing slide 105 longitudinally of the pincer casing. Specification 7005/00 also is referred to.