Patent GB-187651-A (GB)
Title: Improvements in machines for making reinforced sanitary cups
Filed: 1921-05-25
Abstract: 187,651. Rogers, F. H., (Vortex Mfg. Co.). May 25, 1921. Paper bags and the like, making.-A machine for making conical paper cups having reinforcing- tips comprises means for feeding shaped blanks to the cup-forming rollers, means for feeding strip material for forming the reinforcing-tips, means for severing tips from the strip, and means for transferring the severed tips to the cup-forming rollers. The upper conical roller 26, Figs. 1 and 3, is journaled in a spring-controlled sleeve 23 pivoted at 24 to the machine frame and is geared to the lower roller 18, the shaft 16 of which is gearing with a wheel 8 on a parallel shaft 20. g earing with a wheel 8 on a parallel shaft 20. The shaft 20 carries a cam 21 engaging a roller 22 on the sleeve 23 and the gearing is arranged so that the cam lifts the sleeve and separates the rollers 18, 26, to allow the insertion of a blank between them, at every sixth revolution of the shaft 16 and keeps the rollers separated for two and a quarter revolutions. The blanks, similar to those described in Specifications 101,764 and 176,963, are piled on a table 83, Figs. 2 and 14, and are placed, one at a time, in a depression 87 in a reciprocating slide 84 by which each is fed to the rollers 18, 26. The blank is gripped between the rollers by the lowering of the sleeve 23 and secured to the rollers 18 by a pivoted finger 42 actuated by a pivoted yoke 38 operated by a sliding collar 36 through levers &c. from the sleeve 23. The slide 84 is actuated by a link 82, bell-crank lever 79, 81 and connect. ing rod 78 from the wheel 8 and has an auxiliary slide 88 which supports the forward end of the blank as it is carried to the rollers, the movement of the slide 88 being arrested when it is in proximity to the rollers by contact with a fixed part of the frame; on the return movement of the slide 84 the slide 88 is returned by a spring. While the blank is being wound upon the roller 18, the strip material 102, from which the reinforcing tips are cut, is being fed forward by rollers 103, 104, Figs. 7 and 12, driven from the wheel 8, to knives 110, 111 which cut the strip into diamond-shaped tips, the knife 110 being reciprocated through levers 112, 113 by a 'trip lever 114 actuated by 2 roller on the wheel 8. To obviate buckling of the tips between the feed rollers and the knives, the driving gear 105 is loose on the shaft 106 of the roller 103 and drives a drum 118 fixed on the shaft by a slot 123 engaging a pin 121 on the drum; the pin is connected to the gear by a coiled spring 122 and the drum is provided with an adjustable brake band 124 actuated from the knife-operating lever 112. When the knife 110 is moved down to sever a tip, the operating-lever actuates the brake band to arrest the drum 118 and the gear 119, 120 driving the rollers, the movement of the gear 105 being taken up by the spring 122; as the knife moves upwards the brake band is released and allows the pin 121 to move into driving position against the forward face of the slot 123. Each severed tip is momentarily held by spring fingers 128 and then transferred to the rollers 18, 26 by gripping jaws 131 carrried by an arm 130 pivotally mounted on a shaft 181, Fig. 8, the upper jaw being pivoted to the arm and to a rod 136 pivotally attached to an extension 142 on the top of the shaft; the arm is connected by a coiled spring 139 with the fixed bearing 140 and carries a brake drum 134 surrounded by a band 135. Rotation of the shaft 181 first actuates the rod 136 to depress the upper gripping jaw and grip a tip and then to carry the arm 130 and tip to the rollers 18, 26, this occurring during the backward movement of the slide 84 which actuates the shaft 181 through a link 144 connected to a rack gearing with a pinion 133 on the shaft. The spring 139 is meanwhile compressed and on the tip being taken by the rollers, the link 144 is thrown out of engagement with the slide 84 and the spring takes the arm 130 back to its normal position, the motion being retarded by the brake 134, 135; stops limit the movements of the arm 130. The tips are transferred to the rollers at the end of three revolutions of the latter and are brought into contact with the cup thereon with its longer diagonal overlapping the tip end of the blank; the tip is pressed into contact with the cup for threequarters of a revolution, the cam 21 then operating to separate the rollers and release the finger 42 to allow the finished cup to be ejected into a shoot 90. The cups are ejected from the roller 18 by air &c. pumped through a valve in a pipe 68 leading to a bore in the shaft 16 and roller 18, the bore terminating in apertures near the apex of the roller and the valve being actuated from the wheel 8. The ejected cups slide down the shoot into a tube 91 having a movable bottom 92 which receives the cups and is lowered at each reciprocation of the slide 84 so that the cups are stacked regularly inside one another; the bottom 92 is carried by a counterweighted cord 94 passing over a pulley on a ratchet 95 operated from the slide 84. The upper roller and the slide 84 are heated by jets connected a gas pipe 75 so that the paraffin of the blanks is melted to make the layers thereof adhere; excess paraffin &c. on the upper roller is removed by a spring scraper 62. The teeth of the gears connecting the rollers 18, 26 are extended so that the rollers are in gear even when the sleeve 23 is lifted and the gear driving the cup-forming rollers is adjustably mounted on the shaft 4 to that the timing of the parts may be adjusted.