Patent GB-663746-A (GB)
Title: Improvements in or relating to eyeletting machines
IPC: A43D100/02
Filed: 1949-01-11
Abstract: 663,746. Eyeleting. BRITISH UNITED SHOE MACHINERY CO., Ltd., and MAWBEY, L. Jan. 10, 1950 [Jan. 11, 1949], No. 711/49. Class 43. In a power-operated eyeleting machine wherein, as the opposed setting dies 11, 13 are operated during each revolution of a shaft 21, a pivoted raceway swings to allow the endmost eyelet to be entered by an element, e.g. a spring- pressed nipple pin 15, associated with one die and then swings out of the path of the dies. the rotary agitator, which feeds the eyelets into and moves with the raceway, rotates as a unit with a wheel 117 driven continuously by frictional contact with a rotary driving member, e.g. a rubber washer 259, swinging of the raceway causing the wheel 117 to move to and fro in an arcuate path over the face of said driving member. A spring-urged metal disc splined to a shaft 261, driven continuously via belts and pulleys by an electric motor, presses the washer 259 against the wheel 117. A hopper 113, fixed to a disc 111 integral with the raceway casting 85, contains a rotary brush, which resembles that described in Specification 571,833 and is fixed to an inclined shaft, rotatable in a boss 116 of the disc 111 and having secured thereto the rubber-tyred wheel 117. The raceway 23, pivoted at 87, carries a screw 97 which is held by a spring 91 against a roll 99 carried by one arm 103 of a lever pivoted at 107, while a roll 109 carried by the other arm 105 of the lever engages a cam 110 fixed to the shaft 21, so that once during each revolution of the shaft the raceway is swung out of the path of the dies 11, 13. After loading the hopper 113 the raceway 23 is swung manually to the right, Fig. 2, and held from return by engaging the forked end of a strut 133 pivoted to the raceway with a boss (not shown). The machine is then operated to rotate the brush in the hopper until a line of eyelets is hanging in the raceway, their heads resting on strips 125, 127, Fig. 8, fixed to but spaced from the casting 85 and their barrels projecting through a space 129 between said strips; on returning the strut 133 to its inoperative position the machine is ready for eyeleting. The endmost eyelet E is normally prevented from leaving the raceway by a pivoted latch 137, one arm 147 of which is spring-urged anti-clockwise to hold a second arm 151 across the outlet of the raceway. During operation, as the raceway 23 is swung aside, the pin 15 having frictionally engaged the eyelet E, the arm 151 of the latch 137 rides round the eyelet and then snaps back against the strip 127. The next eyelet F is meanwhile held back by a U-shaped wire detent 155, the upper arm 157 of which is secured to the latch 137, while the shorter, lower arm has a tapered end which, as the arm 151 swings away from the raceway, inserts itself between the eyelets E, F. The upper die 13 is fixed to a bar 61 operatively connected via a fixed collar 69, pivoted link 71 and crank arm 77 to the main shaft 21. The lower stationary die 11, Fig. 4, is adjustable vertically by a screw 29 which supports it in a column 27 integral with a casting 31, is adjustable from side to side by moving the casting 31 relative to a casting 33, and is adjustable to and fro by moving the casting 33 relative to a bracket 49, the castings being moved by grub screws 41, 53 after loosening screws 39, 51 which pass through slots in the casting 31 and bracket 49 respectively and are threaded into the casting 33. A flywheel 177, Fig. 10, driven continuously via belts and pulleys, is freely rotatable on the shaft 21. The clutch mechanism includes an arcuate beak 197, partially encircling the shaft 21 and slidably connected by rod members 199, 195 to a collar 181, which is fixed to the shaft and serves as a bearing for the flywheel. Initially the beak 197 is held forward by the upper end of a rod 201, connected via levers and an arm 221 to a treadle. On partially depressing the treadle the rod 201 is pulled down against the action of a spring 209 to allow the beak 197 to move back under spring action, whereupon the rearward end of the rod 195 moves into the path of four dogs 213 fixed in the flywheel so that the shaft 21 is rotated; further depression of the treadle causes one of the arms, Fig. 11 (not shown), connecting the treadle to the rod 201 to be disengaged from the latter which then springs upwards to engage an inclined cam surface 245 of the beak 197, which is gradually pushed forward so that the shaft 21 comes to rest having made one complete revolution. On releasing the treadle its connection with the rod 201 is reestablished by spring action. The shaft 21 may be manually turned by means of a hand wheel. The washer 259 may be dispensed with the metal disc 267 then constituting the rotary driving member. Specification 176,519, [Class 43], is referred to.