Patent GB-543102-A (GB)
Title: Improvements in or relating to machines for inserting eyelets
IPC: A43D100/02
Filed: 1940-08-08
Abstract: 543,102. Eyeleting - machines. UNITED SHOE MACHINERY CORPORATION. Aug. 8, 1940, No. 12717. Convention date, Aug. 10, 1939. [Class 43] A machine for inserting eyelets comprises co-operating tools reciprocating in aligned paths by means of which the work is perforated and the eyelet inserted and clenched, the eyelets being fed from a removable, reciprocating raceway, and the work by means engaging the clenched eyelet. The machine includes a table 21, Fig. 1, on which the work is held against a guide 136 by a presser 98, and reciprocating tools 45, 75. The tool 45, which is removable and performs both punching and clenching operations, is operated by toggle members 26, 27, the former being carried by an adjustable, eccentric pivot 37 to vary the clenching pressure. During the punching operation this tool co-operates with a retractable punch block 55, Fig. 7, sliding in guides in the table 21 and operated by a lever 56 having a lost-motion connection with an operating link 57, the connection including a hand-operated eccentric 67 by means of which retraction can be effected manually ; the link 57 is connected to a forked lever 58 operated by a cam on the main shaft 31. The tool 75, which is a combined inserting and clenching tool, is detachably carried by a bar 23 actuated by a lever 77 having a sliding connection therewith and operated by a crank pin 78 and block 79 sliding between curved surfaces on the lever 77; the latter is carried by an eccentrically-mounted pivot 85 with setting means to vary the limits of movement of the tool 75. The work is fed by a finger 95 which is given an orbital path and engages a previously clenched eyelet. The finger is detachably secured to a cylindrical carrier 100 and passes through a slot 104 in a concentric sleeve which is oscillated, to rock the finger, by a link 107 connected with an arm 106 on the sleeve. The finger is given a simultaneous, translational movement by a bellcrank 117, 118, Fig. 4, pivoted to a link 120 pivoted in turn to another link 121 which is reciprocated by an eccentric 124. The links 120, 121 are pivoted together by a pin 122 which also extends through the arms of a yoke 129 swinging about a pivot 130; the latter is carried by a spring-influenced arm 131 pivoted about a fixed point which, in the position of the parts shown, coincides with the pin 122, the arm being set by a stop pin 134. The eyelets are fed from a hopper 171, Fig. 14, by a raceway 170 which is removably mounted on a platform 172 formed on a carrier 169, the raceway being held in position by a hand-operated, eccentric stop 178 and studs 173, 174; to remove the raceway the stop is retracted and the raceway moved anti-clockwise to free it from the studs. The carrier 169 is reciprocated from the lever 58, an extension 61 of which is connected by a link 166 to an arm 167 of a bell-crank the other arm of which is connected by a link 168 to the carrier. The end of the raceway is thus brought to a position in which a spindle 26 on the tool 75 can extract an eyelet. The presser 98 can be raised and the finger 95 depressed to allow the insertion of a workpiece by a pedal the operation of which also actuates a clutch.