Patent GB-191208339-A (GB)
Title: Machines for Making Paper Cups.
Inventor: CLAUSSEN EDWARD EMIL
IPC: B31B45/00
Filed: 1912-04-06
Granted: 1913-02-27
Abstract: 8339. Claussen, E. E., and Claus, E. A. April 6. Cupping and the like stamping.-A machine for making paper cups comprises means for feeding the blanks from a pile to a preliminary pleating-apparatus comprising a circular carrier in which are arranged a number of pleating- devices each formed of two sets of pivoted blades, the partially pleated cups being then delivered to finishing-dies fitted with cam-operated levers carrying plugs which fit in the dies and act to finish the pleating, these dies being carried on a disk which is steam-heated to assist the fixing of the pleats. The blanks are supported on a table 150, Fig. 20, and are kept in place by rods 151, Figs. 1 and 20, fitted with sheetretainers 152, which prevent more than one blank from being fed at a time by a suction separator 155 connected by a flexible pipe to a pump 161, Fig. 2, with a piston operated by cam-and-lever mechanism 165, 194, 191, 190, Fig. 2. The separator 155 is mounted on a sleeve 154, which is given an oscillating and a reciprocating rising and falling movement by cam mechanism so as to cause the separator to fall alternately on the blanks and take a sheet by suction, and then to swing round to deliver the sheet over a ring 14, Fig. 11, of one of the preliminary pleating-mechanisms. Air is then admitted to the separator 155 to detach the blank, and an eccentrically-mounted arm 42 positions the blank against stops on the ring 14 if the sheet is not deposited correctly. The pile of blanks is maintained at the correct height by a rack 202, Fig. 20, operated by a pinion on a shaft 204 fitted with a ratchet-wheel 208 operated by a pawl on a freely-mounted lever which is engaged as the pile gets low by a projection 217 on an arm on the sleeve 154, and so raises the pile. The ratchet-wheel 208 is fitted with a pawl to prevent it moving backwards in normal working, and this pawl and the operating-pawl may be disengaged from the ratchet-wheel when it is required to lower the table 150 for refilling. The preliminary pleating-mechanism comprises six sets of lower pleating-blades 15, Fig. 11, pivoted at 16 above six rings 14 mounted on a carrier 12 on a rotating shaft 1 driven from the rotating carrier 51 on which the finishing apparatus is arranged. Six blanks are fed to the rings 14 for each rotation of the shaft 1, and while the carrier 12 rotates in an anticlockwise rotation in Fig. 1, the blanks are successively formed into a saucer-shaped form and then into a substantially cup-form by the descent of upper pleating blades 41, Fig. 11, which are pivoted to a mandrel 38 carried by vertically movable sleeves 21, the blades being controlled by pivoted members 40 actuated by vertically movable rods 22 which move in the sleeves. The blades 15, which are formed with inner ends laterally extended and rounded and with bevelled upper edges, are normally maintained in horizontal position by a wire ring 17 in slots 18 in the levers, the ring being pulled downwards by springs 19. As the blades 41 descend, the blades 15 turn about their pivots and coact with the blades 41 to form a pleated cup, which is finally pushed by the blades 41 into one of twenty-four dies 53 carried by the disk 51, as shown at the right in Fig. 11. This disk is mounted on ball bearings, is driven in clockwise direction, and is formed with steam channels 71 near the dies 53, supplied by a pipe 66 and a rotating pipe 69. To cause the dies 53 to have a similar motion to the blades 41 while they coact with the blades, each die is mounted so as to be capable of moving radially in the disk 51, and a disk 11 on the shaft 1 effects this radial movement against the action of springs 54, Fig. 10. The dies 53 are rotated by racks 55 and sector gears 56 during this radial movement, and the plates are thus smoothed out. The cups are now pressed in the dies 53 by means of plugs 62 on levers 61 pivoted in uprights on the disk 51 and operated by a grooved stationary cam 60 so as to cause the plugs to descend into the dies just after the pleating-blades are withdrawn. The levers 61 with the plugs 62 pass under a roller on a slide 91, which is reciprocated in order to press the plug 62 powerfully to complete the cup by a crank and connecting-rod connected together by a spring connexion. After passing the pressing-roller, the cam 60 causes the plug 62 to remain in contact with the cup until the cup has nearly reached a rocking holder 106, into which the finished cup is discharged. The cam 60 then causes the lever 61 and plug 62 to rise. Just prior to this, a movable bottom 98, Fig. 11, of the die 53 is raised by a fixed cam to detach the cup from the die 53, and the cup is detached from the plug 62 by an ejector, the stem of which passes through the plug and is connected to a lever having a roller actuated by contact with a fixed bevel-roll to cause the discharge of the cup into the holder 106.