GB527010A - Improvements in or relating to the provision of wire-rips in canisters - Google Patents

Abstract

527,010. Making rip-seams; seamed joints. BOGNER, P. Dec. 22, 1938, Nos. 37353/38 and 3302/39. [Classes 83 (ii) and 83 (iv)] A rip-wire is secured in a desired location on a can or the like by forcing the wire 46, Fig. 13, into a preformed channel or other wire receiving portion at such location and then clinching the sides of the channel together by grippers or rolls or by forming a substantially closed channel 73 about the wire in one operation. A canend 47, Fig. 1, with a preformed channel 71 is placed on a rotatable head 28, spring mounted on a carriage 25, which is then moved until it engages a stop 37. A rod 36 then lifts heads 33, 34 to lift the head 28 so that the channel member 71 enters between a removable roll 21 adjustable by a screw 50 and a removable roll 22 which is advanced towards the roll 21 by a cam 54 and fixed roll 55 when the rolls 21, 22 are subsequently rotated. The head 34 at the same time lifts a wire guide 30 and inserts a tongue 38, Fig. 7, into the channel 71 adjacent its perforated end 102. The wire feed shown in Fig. 3 is then operated until the wire projects through the hole 102. The cutter 43 then severs a length sufficient for one rip-seam. The rolls 21, 22 are then rotated thus feeding the channel member 73 between them and clinching it as shown in Fig. 8. As soon as the can-end 47 commences to rotate a spring 108, Fig. 1, lifts the guide 30 so that the tongue 38 presses the wire into the channel as shown in broken lines in Fig. 7. The.slide 25 may then be advanced to a stop 61 and the channel member be flattened by rolls 63, 64 operated like the rolls 21, 22 or by grippers. In a modification, the wire may be inserted as described in Specification 497,785 before the part 47 is fed to the apparatus and in this case a tongue 38 without a wire guide &c. is employed. If desired, the tongue may be replaced by a small roller or may be separate from the wire guide. In another modification the part 47 is rotated by a driven plate 84, Fig. 14, while the channel member 73 is acted upon by large idle rolls 91, 92, the latter being moved laterally by cam &c. mechanism in timed relation with the shaft 89. If one wall of the channel 71 is in the same plane as the wall 69, Fig. 13, of the central depression the rolls 21, 22 and 63, 64 may have interengaging formations to prevent relative axial movement. The hole 102 may be closed by solder or other sealing material and the wire end 75 secured by including it in the seam made subsequently. Between the ends of the channel 73 there may be a channel in reduced depth instead of a flat portion 104. The apparatus described may be combined with other apparatus, e.g. for seaming with or without wire inserting means. Specifications 505,454 and 527,072 also are referred to.