Patent GB-191111295-A (GB)
Title: Improvements in or relating to Machines for Charging and Closing Paper Bags.
Inventor: HESSER OTTO
IPC: B65B57/06
Filed: 1911-05-10
Granted: 1912-01-11
Abstract: 11,295. Hesser, O. May 10. Filling tea &c. into paper bags.-Relates to machines for filling paper bags with such materials as tea and coffee, in which the bags are carried by an endless chain past the various devices for effecting the operations of filling, jigging, closing, &c. The chain is formed by open-ended vessels 200, Fig. 1, hinged together, and passes round two horizontal octagonal drums 227, 228, of which the latter is kept in constant engagement with the chain by springs 232. Distended paper bags, as they leave the bag-making machine, are received on a ladle 234, Figs. 1 and 3, mounted on a pivoted arm which is turned to lift the bag into contact with a fixed ladle or jaw 242. A pusher 9 descends, and then, engaging the upper edge of the bag, pushes it down into the conveying vessel. When the pusher reaches its lowest point, two feeders 8<a> carried by the pivoted levers 7<a> move inwards, but are stopped by the upper part of the bag. Rods 6<a>, each connected with a lever 7<a>, have cranked upper ends which engage pins attached to bent locking pieces 10<a> pivoted to slides 12<a>. As a result of the stoppage of the feelers 8<a> by the bag, the points 252 of the pieces 10<a> are engaged by moving pawls 11<a>, which move the slides 12<a> and release a weighing device and allow it to discharge its contents into a hopper 15, where they are retained by a slide 16. If there should be no bag in the conveying vessel, the feelers 8<a> move inwards beneath the pusher 9, and the rod 6<a> moves downwards sufficiently to withdraw the point of the piece 10<a> from the path of the moving pawl 11<a>, and the weighing device is not released. The packet is next moved by the chain to position II and the load of material discharged into it by the withdrawal of the slide 16. In order to settle the material in the bag, the packet is shaken either by the usual method of a rod or lever vibrated by a toothed disk or, when beans or berries are being packed, by means of the device shown in Fig. 6. In this device, a reciprocating member 268 has jaws 22 which grip the edge of the bag, lift it, and at the top of its stroke the jaws are opened by a cam 25 and the bag allowed to drop. The jaws are opened to grip the bag by a cam 26 fixed to an oscillating arm 27. After the packet has been shaken, an advertising paper is inserted. The papers are stored in a magazine 44, Fig. 8, and are conveyed to the packet in the holder 200 by a suction device 38, which is connected to an air-pump or the like. The device 38 reciprocates both vertically and horizontally, and is prevented from descending on the papers in the magazine, if there should be no packet in the holder, by means of a pawl 34. The pawl is connected with the feeler 29 which operates at position VI, Fig. 1, while the papers are inserted at position VII. A filled packet prevents the feelers from descending completely, and holds the pawl out of engagement with the device 38. The upper edges of the bag are next pasted by rollers 54, 55, 60, which are attached to the ends of reciprocating rods and pass over gum rollers 58, 59, respectively. The rollers are turned through a right-angle as they approach the bag, so that they run along the paper and gum it. The paper is supported during the operation by a support which has descended into the bag. The gummed edges are folded by means of blades 140, 141, Fig. 11, which are pivoted on reciprocating slides. The blades have tail pieces carrying rollers 210, which, as the blades approach the bag, engage fixed cams 150 and cause the front of the blades to move downwards and make the fold with a wiping action. The upstanding ears thus formed are folded down by folders 159, Fig. 12, which are fixed at the lower ends of bent levers 215 pivoted on a reciprocating slide. The folders are closed one after the other by rollers which run over the cam-shaped tail-pieces of the bent levers. After the folding, the bag is pressed upwards against the folders by a piston 152, and the folders are then withdrawn and a presser is pressed on the folded top to keep it closed. The bag is next pressed by a series cf pressers at position XXIII, Fig. 1, where it is removed from the machine. At this position, a piston rises and lifts the packet, and a bent rod 135 draws it into a delivery slide 406.