Patent GB-196963-A (GB)
Title: Improvements in machines for making conical cups of paper and the like
Filed: 1921-12-29
Abstract: 196,963. Rogers, F. H., (Vortex Mfg. Co.). Dec. 29, 1921. Paper bags and the like, making. - In machines of making conical paper cups for sundaes, ice creams &c., a sector of a circular blank is gripped between pointed grippers, which are then turned through 180‹ and thereby produce the cone. Prepared circular paper blanks are fed from a magazine to a forming- apparatus, the whole operation being performed at one station without the use of adhesive. The primary machine driving- mechanism may operate a plurality of cup-forming units. A driving-pulley (not shown) drives, through toothed gearing 34 &c., Fig. 1, and a clutch, a shaft 36 which operates through bevel gearing 52, 53 blank-feeding mechanism arranged below a magazine 71 and through Geneva-stop and other gearing 41, 45, 47, 48 &c. a. shaft 49 which operates through bevel gearing 50, 51 cup-forming mechanism 101, 105 &c. The shafts 36, 49 may be extended to drive other feeding and forming units. The gear 53 drives through toothed gearing a shaft 61, Figs. 1 and 6, which through a toothed clutch 68 adjustable by a milled head 69 drives intermittent toothed gearing 62, 64 driving feed-roller shafts 65, 66. Interrupted rubber or like coverings 70 on the shafts 65, 66 engage the lowermost blank 72 of the pack carried in the magazine 71, the shaft 65 preferably having a small advance on the shaft 66 so as to buckle the blank as shown in Fig. 6. Spring-pressed rollers 80, 81, which may be momentarily separated by cam means, are operated by chain and toothed gearing from the wheel 53 and advance the blank farther upon the table 94. After the blank has passed, camoperated fingers 92 are projected through slots 93 and cam-operated fingers 118, Figs. 1 and 12, move along slots 119 to press the blank against a fixed stop 166. The bevel wheel 51 drives a shaft 95 in two parts relatively adjustable rotatively by means of a coupling 96 adjusted by means of a hand-wheel 97, the shaft carrying a cross pin 99, Figs. 7 and 12, on the ends of which are pivoted two half sleeves 100 spring connected and secured to two triangular grippers 101, between which the blank 72 is fed. A conical shaping or support member 105, which overlies the grippers, turns on pivots 107 and carries a cross bar 108 bearing against the upper half sleeve 100. A cam-operated shoe 110, Fig. 16, bears upon the member 105 and lifts it together with the upper sleeve 100 to allow entry of the blank between the grippers 101 and then lowers it to cause the grippers to grip the blank. The Geneva-stop gearing then rotates the shaft 95 through half a revolution so that the blank is folded to cup shape as shown in Fig. 15. A guide rod 127, Fig. 1, carries a cam-operated sliding sleeve 128 to which is secured an ejector-arm 140 around which the cup is wound during its formation. The grippers 101 are again separated and the fingers 118 are given a slight forward movement to push the completed cup out from the grippers a short distance, after which the grippers again tighten further to crease the cup, which is supported from below during the operation by an arm 117 moving oppositely to the shoe 110 upon a common pivot 116. The grippers again separate and the arm 140 advances and pushes the cup forward in advance of holes 161 in the table 94, through which emerge gripper jaws behind the open cup to enter the cup and clamp the folded part thereof to the table until it is removed by hand.