Patent GB-226189-A (GB)
Title: Improvements in packaging machines
IPC: B65B7/18
Filed: 1924-11-28
Abstract: 226,189. Kellogg Co., (Assignees of Kellogg, J. L., Foster, P. W., and Raymer, M. M.). Dec. 14, 1923, [Convention date]. Paper and like bags, folding down mouths of, after filling. - Relates to a machine for closing and sealing packages comprising an external carton having closing flaps and an interior liner of wax-treated paper &c., filled with the material to be packeted and having an open mouth projecting through the opening of the carton. The cartons arrive from a filling &c. machine on a conveyer belt 40, Figs. 1 and 3, between guides 41, 42 with off-set portions 43. The cartons are arrested by the first portion 43 and the leading one is disengaged by reciprocating fingers 44 and is carried to the second portion 43 below a plunger 58 which descends and consolidates the material in the liner. A second set of fingers 44 disengages the carton, which is carried against a stop 78, and a plunger 73 transfers it on to one of a series of plates 67 on an endless chain 70. The carton is moved to position D, Figs. 1 and 3, so that the mouth may be opened as at D, Fig. 37. This is effected by spreader arms 86, Fig. 3, on a bracket 81 rotating with a shaft 80<1>, which arms are actuated by a cam 88 to enter and spread the mouth of the liner and the side flaps of the carton. Fixed folders 91, 92 continue the bending down of the side flaps until they are at right angles to the sides, the carton being meanwhile guided by side rails 89, 90. The bracket 81 also carries a wiping member 93 which turns down the forward flap P<1>. A finger completes the downward movement, and a finger 103, Figs. 1 and 3, on the standard 102 of the preceding plate 66 retains the flap in a horizontal position. A coupon may be introduced into the packet at station F, Fig. 3, from a magazine 108 by suction or other mechanism 109, and the carton passes to station G for the formation of bellows folds in the liner as at G, Fig. 37. The mechanism for effecting this is mounted on a cross-bar 110, Figs. 1 and 15, and comprises paws 122, 123 operated from a cam 121 by linkage 114 - - 117. 124, a finger 127 meanwhile depressing the rear flap P<2> into the position shown at G, Fig. 37. On arrival at station H, opposed heated pressing irons 133, 134, Fig. 20, are actuated through equalizing mechanism to approach each other and close the mouth of the liner as shown at H, Fig. 37, moving with the package to ensure adhesion. At position I the sealed end of the liner passes between open link chains which retain the folds while cooling takes place and at position J a folder with a wiping action effects the fold shown at J, Fig. 37, and also advances with the package during its action. At station L. Fig. 1, the front and rear plates P<1>, P<2>. Fig. 26, are released and the rear flap P<2> is folded forward by a member 191, a fixed plate 189 with an upturned end 190 securing both flaps in a closed position. Gum is applied to the top and bottom edge of the flap P<3> bv rollers 196, 198, Fig. 27, a scraper 197 removing excess. The rollers are operated by mutilated gears so as to have a peripheral velocity equal to tnat of the flaps as it passes between them, and to have a greater velocity at other times so as to assure a sufficient coating of adhesives. The flaps P<3>, P<4> are turned over by curved rails and the package is pushed off the plate 67 towards the rear of the machine as shown in Fig. 1, and beneath a roller 219, Fig. 37, yielding rails at the sides preventing jamming. The package passes out of the machine on a conveyer 233 and beneath further pressing rollers. Specification 218,355 is referred to.