Patent GB-579104-A (GB)
Title: Improvements in machines for making and filling packages
IPC: B65B45/00
Filed: 1944-09-01
Abstract: 579,104. Forming and filling packets with tobacco &c. BRONANDER, W. B. Sept. 1, 1944, No. 16719. [Class 94 (i)] Materials such as tobacco are packed in a machine which makes the packets, fills them, and after closing the ends delivers the packets. The packets are formed from paper-lined tinfoil led from a roll T, Figs, 1A and 27, to scoring and cutting mechanism comprising swing rolls 70, 71 with scoring devices 72 which forms triple scores to facilitate folding a packet having square edges. The scored web is cut by a rotary knife 81 and fixed knife 82 and the cut blank receives strips of gum from rollers 83, 84 and the leading edge is then received in a trough 93 preparatory to the folding of the blank around a rectilinear hollow former 50. A number of formers 50 are pivotally supported by chains 41 which are advanced intermittently and the formers engage the central part of cut blanks so that as they advance the blanks are folded around one end and two sides of the formers. On further advance the sides of the blank are folded in to complete the sides of the packet, and then paper wrappers are fed automatically from the bottom of a weighted pile past gluing rollers, and are folded around the formed packet, the left hand edge of which is left open. The gumming of the sides of the wrappers is completed by means of heated pressing devices, and brushing devices 195 act on the sides to finally consolidate the wrappers. When the formers 50 reach the position shown in Fig. 1C a cam surface 200 causes the levers 51, 52 which support the formers 50 to turn them to vertical position so that their open ends register with funnels 231, 232 from which measured quantities of tobacco are delivered from hopper 217 with a disc valve 221 delivering into feed packets 219, 220 provided with flap valves 227, 228 which open at intervals to deliver a charge to the funnels 231, 232. Each former 50 receives a half charge at position X, another half at position Y, and then at position Z the charge is compressed by a reciprocating rod 260 which is actuated by a rack 263 engaged by an oscillating pinion 264. The rod 260 forces the loaded packets through the formers 50 until they rest upon a support 328, Figs. 1C and 18, and then the loaded packets are moved laterally by means of a slide block 283 with a pusher 285 which moves the packets between guide walls 280, 281. The packet is finally slosed by turning in the end tucks as shown in Fig. 20 by means of oscillating tucking blades 320, 321, Fig. 18. While the end tucks are being formed the packets rest on a support 290, Fig. 21 (not shown) and is constrained by guides 291, 292, while the support is given a vertical reciprocating movement which causes the actuation of the tucking blades 320, 321. Finally, end folds are made by means of folding blades 325, 326 pivoted to the walls 280, 281, and oscillated by lever mechanism, Fig. 23 (not shown). The completed packets are delivered by a swinging pusher member 355 actuated by linkwork, and are received on a table 360 fitted with brushes 361, 362.