Patent GB-463270-A (GB)
Title: Improvements relating to packaging machines
IPC: B65B29/02
Filed: 1935-10-12
Abstract: 463,270. Sewing - machines. FUERY, G. T. (Millie Patent Holding Co., Inc.) Oct. 12, 1935, No. 28176. [Class 112] [Also in Groups XVII and XXX] The machine makes fabric bags and fills them with tea &c., closes them and attaches a string handle and tag. The cloth to form the bag is fed from a slot 80a.in a container 80 around a pin 82 to a gripper 83a which co-operates with a serrated bar to draw off sufficient of the cloth, which is in tubular form, to form a bag in the bag making apparatus B. The further feed of the cloth M3 is effected by rollers 83u, Figs. 16, 17 mounted on each side of a tongue member 85 passing into the tubular strip. The member is cut away at 85b and has a relatively thin flexible portion 85c formed with an S-shaped bend to conform to the position of the rollers 83u. The rollers are mounted on a vertically sliding frame 83n, and are fitted with pawls permitting them to rotate only on the downward travel of the frame. Just prior to the upward movement of the frame, shears 86 sever a bag section M<2> from the web, and open up to allow the passage of the upper end of the tube M<3> on to holding means comprising spaced fingers 90. The enlarged upper portion 85a spreads the tube sufficiently to allow it to be drawn on to the fingers 90. The fingers 90 are rotatably mounted on vertical shafts 90a journalled in interengaging segments 91 which are pivoted at 92. When receiving the fabric tube, the fingers are disposed in the same parallel plane and are then urged apart by a spring 91b to tension the fabric. The fingers are one pair of a series mounted on a turntable 93 rotating on a vertical shaft 94. The tube is now carried past a sewing device 109, Fig. 12, which applies a stitch seam closure to the bottom, to form a bag. The movement of each bag length with respect to the sewing machine is continuous, as when the bag carrier stops moving forward, the sewing machine starts to move backwards. Severing means comprising a fixed blade 116a and a movable blade 116b cut the thread left connecting the bottom seams of adjacent bags. At a subsequent station the bags are filled, and, at the next station, the fingers 90 turn together and are swung sufficiently to release the bag, which falls into a receptacle 129, Fig. 23, comprising a stationary outside wall 129a with a contoured lower end 129b, and a wall 129c hinged to an arm 130. The wall 129c is closed upon the bag by cam action. A wall 135 and a corresponding hinged section at the other side of the bag ensure proper position. The gripping device is one of a series which are mounted on a rotary spider and successively present the bag at a position where the top edge is sewn. The second sewing machine 153, Fig. 26, is supported in a mount 154 pivoted at 154c and provided with an abutment plate 154d bearing on a compression spring 156, the lower end of which is mounted on a boss 157. The spring urges the machine in a clockwise direction with the needle 153a level with the top of the bag. The arms 130 are so moved about their vertical axis that the bags are close together at and near the sewing station, and, after sewing, are moved slightly apart to tension the inter-connecting threads for cutting, which is effected by shearing.