Patent GB-342457-A (GB)
Title: Improvements in or relating to can closing machines
IPC: B21D51/32
Filed: 1929-12-11
Abstract: 342,457. Assembling can heads and bodies ; seaming. CONTINENTAL CAN CO., Inc., 42nd Street, and KRONQUEST, A. L., 161, Clifton Avenue, Syracuse, both in New York, U.S.A. Dec. 11, 1929, No. 37981. [Class 83 [iv).] Filled cans are fed by a varying pitch feed drum 79 to the pockets 82 of a rotated can holder 81. Can ends are fed from a magazine 113 to the seats 115 of the can holder whenever there is a can to be closed, the end being located directly above the can. Around the central spindle 6 and its axial extension is an upper turret 9 and a lower turret 10 both rotated and carrying around their circumferences a series of rotated top and bottom can holders 37 and 92 and the upper turret carrying seaming rollers 48 and 51. The can holders are timed to engage the cans as they register over the can pockets of the rotated can holder 81. The main driving shaft 25 is coupled by a cone clutch 26 to a belt pulley by an operating handle 32. The shaft 25 drives the spindle through bevel gearing and spindle 6 drives sleeve 8 and lower turret 10 carrying a series of lower chucks 92, Fig. 16. The can body is raised against the can end by camoperated rack and pinion 131 operating togglelevers 105 the end being forced into the can. The can is thus rotated between the upper and lower rotating chucks 37 and 92. As the sleeve carrying the actuating cams rotates it moves the first operation roll into contact with the can end, and withdraws it from the cam end and then after a pause it moves the second operation seaming roll into contact with the can end to finish the seam. The seamed can is ejected from the upper chuck by a high point on the cam 86 of the upper chuck 37, which, after seaming and both rolls being withdrawn, moves down the seating pad to strip the closed can from the upper rotating chuck. Ejector arm 119 then moves can out of machine where it passes via a printing roll 124 to delivery shoot 125. The seaming rolls are driven through a safety slip adjustable multiple disc clutch and sun-and-planet pinions 71 carrying a rotating cam sleeve carrying the cams 65, 66 which in turn actuate the spindles carrying the seaming rolls 48, 51, Fig. 5. Between the actuation of the rolls 48, 51 a considerable time lag allows the machine to be stopped if desired and the can lowered and removed for inspection. The seaming rolls are mounted on short shafts 59 on crank 58 pivoted about pivots 50 or 47 which are thus moved into seaming position by cams 65, 66 against spring pressure 67. The spindles of the seaming rolls are long enough to allow the rolls to spring over the vertical seam in the side of the cam. Hand adjustment of the rolls is provided through a segment gear 57. The upper rotating chuck 37 carries a spring-pressed seating pad 83 which is forced down by stationary cam 86 as the turret 9 rotates thus forcing the can end into the can body before the can is raised into contact with the chuck. The upper chuck 37 is axially aligned with the lower chuck 92 by adjusting screws and a centring piece 111. To receive cans of different heights the lower turret can be raised or lowered bv turning the shaft 16 so rotating by worm gear a threaded collar 13 to adjust the height of the sleeve 8 in the sleeve section 7. The upper turret can also be raised or lowered.