Patent GB-661812-A (GB)
Title: Improvements in or relating to the manufacture of clothes pegs
IPC: B21F45/02
Filed: 1949-07-08
Abstract: 661,812. Making clothes pegs. WATSON, F. (Hellkvist, A. O., Ericsson, N., and Hauffman, A. W.). July 8, 1949, No. 18126/49. Classes 83 (ii) and 83 (iv). [Also in Group XXV] Angular bending ; shearing.-Clothes pegs are made by inserting a spring between two jaws, preferably of wood, forcing together the jaws, with the spring therebetween and fastening the jaws together by a preformed hoop. The machine for carrying out the assembly comprises a base-plate with an upstanding cast iron pillar with radial arms which support driven vertical cam shafts. A vertical bore and a number of horizontal bores extend through the pillar and the feed of material to and the operating of tools within the bores are effected by means of rock levers operated by cams on the cam-shafts. Two wooden peg jaws are cut from a profiled strip by a machine not described and fed into lateral recesses 46, Fig. 7, extending into the central bore 28 of the pillar where they rest on a block 131 extending across the bore. A steel strip 48 is fed forwardly by means of a reciprocating leaf-spring unit 54, Fig. 2, co-operating with a similar fixed unit 52 so that it engages a stop and extends across an opening offset from the central bore and above the peg jaw receiving recesses 46. A portion is then cut-off by a shearing punch 70 and moved by a pusher 80, Fig. 4, into the bore 28 where it is held by grippers 84 reciprocated by rods 86. On the downward movement of a plunger 30 within the bore 28, the lower end 32 engages the centre of the cut-off strip 48, bends it to U-shape with the assistance of an inward movement of the grippers 84, and then pushes the piece down the bore between the jaws 139 where it engages within the recesses 171. At a position below the jaw-supporting block 131, an iron wire is fed by a reciprocating leaf-spring unit 108, Fig. 6, co-operating with reciprocating gripping means 110, 117 so that the end of the wire abuts a V-shaped stop 104 and lies within recesses 128 at the ends of a forked plunger 124 movable at right angles to the direction of feed. The wire is severed by a cutter 101 and then bent to a U-shape lying within the fork of the plunger 124 by means of a reciprocating member 144 having an upstanding end 151 and a recess 149 into which project the ends 129 of the bent wire. These are now engaged by plungers 154 and bent around the head 151 which is slightly tapered as shown to compensate for the resilient opening of the hoop after the withdrawal of the plungers. The member 144 is mounted in a vertically reciprocating block 138 so that the head 151 may be withdrawn vertically from the hoop, which is lodged within the fork of the plunger 124, and horizontally from the bore 28. The jawsupporting block 131 is then withdrawn and the plunger 30 moved down further so that the jaws 139 together with the spring are forced down through the iron wire hoop which enters into the peripheral recess 143. During this movement the plunger 124 is slightly withdrawn and then again fed forwardly. By fully withdrawing the plunger 124, a jawsupporting portion 130 thereof is removed from the bore 28 and the completed peg pushed down into a collecting device 170.