Patent GB-190823480-A (GB)
Title: Improvements in Lacing Hook Setting Machines.
Inventor: FRASER WARREN FLETCHER
Filed: 1908-11-03
Granted: 1909-08-12
Abstract: 23,480. Fraser, W. F. Nov. 3. Lacing-fastenings.-In a machine for setting lacing-hooks in boot and shoe uppers, in which the spacing is automatically performed by the machine, the upper is held in a holder and the setting- mechanism is moved intermittently and longitudinally along the upper by the spacing-mechanism, the motion being alternately in opposite directions for right and left uppers. Fig. 1 is a plan of the machine, and Fig. 4 is a sectional elevation on the line A, A<1>, Fig. 1. The frame 22 is fastened to a ring 23 which projects through a hole 24 in a base 91 and is adapted to rotate therein, the ring being secured by a split collar 25. The driving-shaft 27 is journaled in the ring, and carries a loose driving- pulley 30 driven by a belt passing round guidepulleys 31, 32 on a shaft 33. The pulley 30 has teeth 35 on its hub to engage with a pin 36 in a clutch-collar 37 fast on the shaft. The pin is normally kept in engagement with the teeth by a spring 38 and is disengaged by a lever 39 pivoted to the ring 23. The lever 39 is connected by a link 41, Fig. 5, to an arm 42 on a rock-shaft 43, Fig. 1, which carries an arm 44 provided with a cam-roll 45, Fig. 12, bearing against a cam 46 fast to a gear 47. The cam 46 throws the clutch out of action at determined intervals, the machine being re-started by means of a treadle-rod 170. The gear 47 meshes with a pinion 49 slidable on the shaft 27 and driven by a clutch-collar 50 so that it may be stopped or rotated at will by means of a lever 51 operated by a treadle-rod 52. The gear 47 bears on its rear face a cam-face or cam-path 53, having a series of throws 54 and rests 55, in which rides a cam-roll 60 journaled on a cam-slide 56. The slide rod 56, Fig. 17, through collars 61, 63 and a stud 62 rocks a rod 64 about a pivot stud 66 clamped to a collar 67. The rod 64, through collars 70, 72 and a stud 71, shifts a rod 73 which extends across the machine parallel to the rod 56 The end of the rod 73 bears a rack 75, Fig. 1, gearing with a pinion 76 on a shaft 77, the other end of which bears a pinion 78 gearing with a fixed segment 79, so that the intermittent sliding motion of the rod 56 causes the machine to be rocked intermittently. To increase or diminish the amount the machine rocks at each step so as to vary the distance between the hooks, the stud 66 is made adjustable along the bar 64. To the collar 67 is fastened a sleeve 82 slidable along a bar 83 and projecting into another sleeve having a graduated knob 86. This sleeve has a pin engaging a helical slot in the sleeve 82, which is moved to shift the pivot stud 66 when the knob 86 is turned. The lacing-hooks are fed from a hopper down a raceway ending in a quarter-turn 95, where a hook 112 is received by a projection 96, Fig. 9, on a feed-finger 97. The book is brought down the turn and delivered to a carrier 98, on to which it is pushed by a second projection 99 on the feed-finger, the hook being moved from an horizontal to a vertical position. The feed-finger is rotated by a crank 102 and has a slot 108 surrounding a slide block 109. The crank-shaft 103 bears a pinion 104 rotated by a segment arm 105 from the shaft 27 through a cam 107 and cam-roll 106. The hooks on the raceway above the quarter-turn are held by a finger on a spring-pressed detent, which is released by the upward motion of the projection 99 of the feed-finger. The lacing-hook carrier comprises a stud 117 to which is secured a sleeve 114 with closed top 98 for holding the lacing-hook 112. The stud 117 has a bearing 118 to rock on the spherical top 119 of a stud 120 fastened to a yoke 121 pivoted on a pin 122. The pin 122 extends through an ear 123 on a collar mounted on a crank 125 on the end of the driving-shaft 27 through the crank 125, which reciprocates the carrier to clinch the hook in the material by an anvil 100. The carrier is guided by an arm 126 screwed to the stud 117 and pivoted in screw pivots 127, Fig. 19, bearing a lever 128. The lever carries a cam-roll 129 held against a cam 130 on the shaft 27 by a spring 131. By this means the carrier is rocked inwardly on the ball 119 to release the hook. The upper 138, during setting, is held in a holder 139 consisting of a member 140 pivoted at 141 to the base 21. Two brackets 142 extend upwardly from the member 140 and carry a guide-plate 143 and a clamp-plate 144, Fig. 6. A movable clamp-plate 146 on stems 148 is pressed up to hold the upper by springs 149. The plate 146 is lowered by a treadle-rod 150 connected to an arm 151 on a rockshaft 152. The shaft 152 has forked arms 153 which straddle the stems 148 and act on cross-pins 154 carried by them to move the stems downwardly. A spring 155 holds the guide-plate 143 against a roll 156 on the anvil stem, allowing a slight motion of the holder so that the hooks are set at a correct distance from the edge of the upper. The upper is positioned by front gauges 159 and top gauges 157, 158, Fig. 2, attached by screws 164 through slots 163 to a plate 162 on the anvil. When the hooks have been set in a left upper, the setting-mechanism is in one extreme position ; the right upper is then inserted, and the hooks are set while the machine is rocking to the other extreme. To avoid back-lash and to ensure a close fit between the pinion 78 and the segment 79, the shaft 77 is made adjustable by being eccentrically mounted in a split collar 166, Fig. 15. The machine may be used for setting rivets, eyelets, and the like.