Patent GB-190014400-A (GB)
Title: Improvements in Machines for Packaging Powdered or Granular Materials.
Inventor: OKELL JOHN R
Filed: 1900-08-11
Granted: 1900-10-27
Abstract: 14,400. Okell, J. R. Aug. 11. Packeting granular materials; paper bags.-In a machine for packeting granular materials a paper blank is lifted from a pile, pasted, wrapped round a former, and folded in the end to form a packet. The former passes through a drying-chamber, and collapses, when the packet is blown off it into a receptacle on an endless chain, and simultaneously with four others is filled from a double weighing-machine, the two sides of which act alternately. The packet, which is pasted before it is filled, is then shaken and closed, and passes under a heated guide to the delivering- mechanism. The sheet of paper is lifted from a pile 30, Fig. 3, by a plate 50, which has projections on it which receive paste from a roller 65. The plate 50 carries the sheet on to a table 85, and is disengaged from it by vertical pins 76, which pass down through the plate ; another paster 210 passes through the table and pastes the underside of the sheet, and then the table rises into a vertical plane and carries the sheet against stops 91. Nippers seize the sheet next, and drag it laterally opposite the former 220, and a block advances and presses the sheet against the face of the former, while a fork 120 folds it around the sides. The sheet is folded behind the former and stuck, by folders 126 turning about the shaft 115. The bottom of the packet is folded, first by a plate 145 which advances horizontally and then swings about links 148, then the sides are folded by blades 146 which turn on shafts 157, and finally the remaining flap receives a spot of paste from the paster 175 and is pressed upwards by a pivoted plate 147. The former is carried on a wheel 114, which turns about the shaft 115; it is in two parts 220, 221, the latter 221 being moved towards the former 220 to allow the bag to be withdrawn ; its range of motion can be adjusted to adapt it to packets or bags of various sizes. The bag is pushed partly off the former by a plunger 233, operated by a cam rail 235, and, as it passes t h r o u g h a heated chamber to dry it, a current of warm air passes down the former and escapes upwards between it and the bag. The bag is finally expelled by a blast of air, and, if it will not yield to that, by a stripper. The wheel 114 is intermittently rotated by a lever carrying two pins, which enter notches on opposite sides of a wheel on the shaft 115. These pins are expelled by a detent pin, which moves in the opposite direction and blocks the wheel. The bags are delivered inco receptacles 280, Fig. 10, on an endless chain, and are tightly held by movable bars 302 on one side of the receptacle. They are brought first beneath a plunger with pasted sides which enters the mouth of a bag, and has the sides thereof pressed against it. The bags then move beneath a filling-apparatus, which comprises two series of five measuring chambers 363, 364, which are alternately filled from a hopper 361, and are controlled by doors 368, 369, the upper ones 368 closing under brushes 394 to prevent them from nipping and crushing any grains. The vessels 363, 364 deliver into weighing-vessels 392 the grain, which is always slightly under weight, the deficiency being made up by grain fed through a bye-pass 395 to spouts 398, which are tilted clear of the scale-pan as the latter begins to descend. The door 416 of the scale-pan is opened by a lever 420, which simultaneously lifts the weight 411 from the balance beam, and the grain falls through hopper 427 into the bag, which is shaken by a vibrating bar 444. The bag is afterwards closed, receiving another spot of paste in the process as in the closing of the bottom of the bag. After passing under a hollow heated plate, the bags are thrust out of the receptacles on the chain, and forced laterally on to an endless band which carries them away.