Patent GB-682087-A (GB)
Title: Improvements in or relating to eyeletting machines
IPC: A43D100/02
Filed: 1949-11-19
Abstract: 682,087. Eyeleting. BRITISH UNITED SHOE MACHINERY CO., Ltd., and JAMES, C. H. Nov. 20, 1950 [Nov. 19, 1949], No. 29647/49. Class 83 (iv). In an eyeleting machine swinging of the feed raceway is controlled by a cam member and cam follower member, one member, e.g. a roll 129 being mounted to swing with the raceway 87, while the other, e.g. a slide block 79 is vertically slidable adjacent to, and has a lostmotion connection with, a bar 33 which carries an upper die 37 and a nipple pin 41 and which is mounted for up and down movement, the arrangement being such that (a) during initial downward movement of the bar 33 the slidable member remains stationary due to the lostmotion connection; (b) during further downward movement of the bar 33 said slidable member moves with it, the cam member and follower co-operating to swing the raceway against the action of resilient means out of the path of the die 37, and (c) during upward movement of the bar 33, the lost-motion connection ensures that the nipple pin is raised out of the path of the raceway before the latter can return to its rest position. Initially the pivoted feed raceway 87 is held in its rest position by a spring 124 which also pulls the cam roll 129, carried by a lug 127 of the raceway, against an inclined face 131 of a slide block 79, so that the latter is held up against the action of its own weight, a pin 75 at the upper end of the bar 33 then being located half way down a vertical slot 81 in the slide block 79. A pivoted spring-urged latch at the end of the feed raceway normally prevents escape of the eyelets. On depression of a treadle connected by link work to the pin 75, the bar 33 is moved down so that the telescopically mounted nipple pin 41 enters the endmost eyelet in the raceway, but initially the slide block 79 remains stationary due to the lost motion of the pin 75 in the slot 81. When the pin 75 engages the bottom of the slot 81, the block 79 descends with the bar 33, whereupon the roll 129 and hence the raceway 87 is pushed outwards by the inclined face 131 against the action of the spring 124 so that the end of the raceway is out of the path of the die 37; as the raceway swings out the eyelet-retaining latch clicks round the eyelet on the nipple pin 41. As the bar 33 descends further to set the eyelet the roll 129 rolls upon a vertical face 133 of the block 79 so that the raceway remains stationary. When the treadle is released after setting of the eyelet, the bar 33 rises under the action of a return spring (not shown), the block 79 and hence the raceway 87 remaining stationary until the pin 75 engages the top of the slot 81. The block is then raised, and as soon as the roll 129 slides off the vertical face 133 the spring 124 pulls the roll against the inclined face 131 so that the raceway is returned to its rest position, the previous upward movement of the bar 33 having raised the nipple pin 41 out of the path of the returning raceway, and so that the block 79 is raised against the action of its own weight to its initial position. Each time the treadle is depressed a flywheel 101 connected to a brush in the eyelet hopper 95 is moved by a pusher 105 in engagement with ratchet teeth on the flywheel.