Patent GB-299568-A (GB)
Title: Improvements in and relating to machines for soldering cans or other receptacles formed of metal
IPC: B23K1/14
Filed: 1927-09-07
Abstract: 299,568. Jones, H. Averay-. Sept. 7,1927. Soldering.-In a machine for soldering the ends on to angular cans, the cans are fed step by step in a vertically inclined position over flux and solder baths, the can being alternately tilted laterally to solder the two opposite sides of one end in turn, then being turned through 90‹ to solder the other two sides, and finally being turned end for end and a similar set of operations performed on the other end. The cans are traversed over two rows of alternate acid and solder troughs. 29, Fig. 8, arranged on supports 30 carried by a set of standards. The cans rest against adjustable guide plates 24, 24<a> and on a shaft 26 carried by a pair of pivoted U-shaped members 21 on the forward part of the machine, and also against guides 32 secured to the standards beneath channel members 4 which guide endless chains 5, 5a provided with conveyer bars 6 for traversing the cans. Two sets of members 21 and co-operating parts are arranged in alignment for use on opposite ends of the cans. The pairs of members 21 are pivoted on axially aligned shafts 19 and are rocked by crank pins 70, Fig. 9, and connecting rods 71 from a shaft 68, which is driven by gearing 67, 66, 53, 51, 47, Fig. 6, from a gear 45 keyed to a sleeve 43 driven by bevel gear 44. 46 from the main shaft 33. The gear 51 also operates a gear 52 on a shaft 40, which through bevel gear 56, 57 rotates a shaft 58 carrying an adjustable gear 63 engaging a gear on a shaft 13 carrying the chain driving-sprockets 11, 11<a>. The gears 51, 52, 53 have toothed portions and plain portions, the plain portions of the gears 52, 53 having concave ends 55a, Fig. 5, to engage that of the gear 51 to lock them alternately. The shafts 26, which may have roughened surfaces, are rotated alternately in opposite directions to move the edges of the cans into the acid and solder baths during tilting, by gearing the shafts 26, 19 together at 27, 27a, Fig. 9, and rotating the shafts 19 by toothed sectors on levers 28 driven by links and crank pins from discs on a shaft connected by gearing 76, 75 with the shaft 40, Fig. 5. In operation, during the intervals between the traverse of the cans, thev are in succession tilted into an acid bath: then, in the next stage, back into another acid bath, and in subsequent stages into solder baths on opposite sides of the shaft 19. The can is then turned round 90‹ during its traverse by engaging a cam surface 73 on the plate 24a arranged opposite a recess 74 in the plate 24, this being assisted' by the rotation of the first shaft 26, since the rear edges of the can at this stage rests on plates 81, mounted on strips 82 carried by the members 21. After a successive of similar operations for soldering the other two sides, the can engages a curved rail 83, Fig. 10, and is tilted by the members 21 over rails 84, 89, whereupon it is traversed over an inclined skid 85 so as to bring the unsoldered end into contact with an inclined body 86, from which it is transferred to the chains over a skid 88 on the rear members 21 into the rear part of the machine. The other end of the can is then rotated by a similar sequence of operations. The rail 83 is freely mounted at its rear end and at its forward end rests on a lever 95 laterally adjustable by a screw 96. The shafts 26 may be replaced by support rails, or the cams 73 may be dispensed with and pairs of aligned shafts 26 rotated in opposite directions used to turn the cans through 90‹, when the front edge of the can is on one shaft and its rear on the other.