Patent GB-469852-A (GB)
Title: A machine for filling boxes, preferably cardboard boxes with a plastic, pulverized or granular material and for closing said boxes
IPC: B65B43/50
Filed: 1936-06-10
Abstract: 469,852. Packeting plastic and granular materials. BERG, B. VAN DEN, DOUNA, S., HACQUEBORD, L., and SPRIENSMA, R. June 10, 1936, No. 16266. Convention date, June 11, 1935. [Class 94 (i)] [Also in Group XVIII] A machine for filling and closing boxes having foldable closing flaps with plastic or pulverized material, especially ice-cream, comprises an horizontal table which is rotated intermittently and conveys boxes from a box container to filling and closing apparatus and to a device for removing the filled boxes. The table 26, Fig. 1, is secured to a vertical shaft 22 which is rotated step-by-step by a ratchet-and-pawl operated by a motor 2 through a variable-speed friction gear. Cardboard boxes are stored in a vertical container 58 adjustably secured to a sliding block 53 which is reciprocated vertically. At each descent of the container 58, the lowermost box is released by clamps 59 and is deposited on the table between clamps 66 which are opened and closed by cams and springs. When the container 58 rises, the box left on the table is carried to a position beneath a filling-device comprising a casing 40, Fig. 3, containing a cylindrical member 31 which is rotated within the casing by a bevel wheel 27 secured to the shaft 22. A plunger 33 slides within a diametrical aperture 32 in the member 31, and a filling-funnel 44 and an outlet nozzle 42 are fitted to the casing 40. Ice-cream or other material is placed in the funnel 44 and is fed downwards by a reciprocating rod 47. The member 31 is turned intermittently through 180‹ and comes to rest with the aperture 32 vertical. The weight of the plunger, assisted if required by pressure from the rod 47, extrudes material from the aperture through the nozzle 42 into a box while drawing a new charge of material into the aperture. The filled box is carried by the table beneath the closing-mechanism, which is supported by a tube 92, Fig. 1, that slides vertically through a boss 117 adjustably secured to a standard 80. A plate 93, secured to the tube 92, has four arms 94 which are connected at their lower ends to a frame 98. Folders 111, Fig. 5, are pivoted in slots in the arms 94 and are oscillated by levers 105, also pivoted in the slots. A rod 84, which is reciprocated vertically, passes through the tube 92 and is secured to a die 90 that slides between the arms 94. The die has inclined sides 87, 89 which engage the upper ends of the levers 105 and oscillate the folders 111. Each box 130, Fig. 7, has end flaps 133 and side flaps 132, 134, the flap 134 being provided with a lip 135. When a filled box is at rest beneath the closing-apparatus, the rod 84 descends and allows the plate 93 to descend by gravity until a collar 118 on the tube 92 makes contact with the boss 117. The box is then enclosed by the frame 98. Continued downward movement of the rod 84 and the die 90 causes the die to operate the folders and close the flaps of the box, and the flattened lower end of the rod 84 forces the lip 135 beneath the flap 132. The rod 84 then moves upwards and lifts the folders off the box. Finally, the table carries the closed box to the next operating- station where the clamps 66 open and the box is removed from the table by one of a number of trays carried by arms attached to a vertical shaft 123.