Patent GB-384609-A (GB)
Title: Improvements in or relating to packing machinery
IPC: B65B11/16
Filed: 1932-07-18
Abstract: 384,609. Making and filling packets. CHALMERS, J. W., and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. July 18, 1932, No. 20277. Convention date, Aug. 6, 1931. [Class 94 (i).] Relates to machines for producing a packet having a flexible outer covering reinforced by an internal strip of rigid material, such as cardboard, and filling the same with block-shaped articles such as batches of cigarettes, and consists in means for moving the articles to be packed along the bed of the machine into the path of a transversely fed strip longer than the combined lengths of one end and two sides of the article, folding the strip around three sides of the article, and inserting the article together with the strip into a U-shaped block-ended packet, and then folding the packet together with the projecting portions of the strip and sealing it. Rectangular paper blanks for making the packet are fed by suction means from a magazine 8, Fig. 1, between feed and edge-gumming rollers on to a guide 17. A reciprocating plunger 2 then forces the blank between jaws 5, 6 past an oscillating folder 20 and a spiral folder 22 which produce the narrow tuck 18, Figs. 6, 7, and 8, and fold the inner and outer flaps 19, 21, the arrangement being such that the inside of the packet is free from obstructions formed by the folding. The openended packets thus produced pass into a heating chamber 23 and are fed by a reciprocating plunger 24 into a vertical magazine 26. Cigarettes in a magazine 28 are fed in batches by pusher pieces 29 on an endless chain and engage a strip of cardboard held in guides 36. The cardboard is fed from a reel 31 of a width equal to the length of the strip and passes between feeding and creasing rollers 32, 33 to rotating and stationary cutters 35, 35a, and thence between the guides 36. The continued motion of the pusher piece 29 causes the batch of cigarettes to force the strip from the guides 36 so that it lies around three sides of the batch. The strip with the batch then enters a reciprocating mouthpiece 37 which enters the lowermost packet in the magazine. The continued movement of the puslier forces the strip and batch of cigarettes into the packet and causes the filled packet to escape from the magazine against the action of a spring flap and to be moved into the path of a rapidlyrevolving roller 41 to transfer it to the endclosing mechanism 42. The closing device comprises an endless chain conveyer moving the packet at right-angles to its previous movement past folding and gumming devices. The packet first contacts with a tucker bar 45, Fig. 6, which closes down the fold 46, Fig. 7, together with the extending portion of the cardboard frame 47, a tucker 48 forming a similar fold 46 on the other side of the packet, or a fold as shown in Fig. 7 assisted by slits in the original packet blank. A spiral folder then folds up the lower broad flap 52 and a streak of gum is applied by a roller to the upper flap 53 which then engages another spiral folder and the finished packet passes to a heater rail. The cardboard strip 47 may project slightly in the finished packet as shown in Fig. 8 to facilitate tearing the packet open and for withdrawing the cigarettes, or the strip may be arranged so that its ends lie in the middle of the closure end of the packet. The finished packets may be fed to a " Banderoling Machine " for wrapping revenue stamps around them.