GB316697A - Improvements in or relating to bag filling and closing apparatus - Google Patents

Abstract

316,697. White, A. E., (Bates Valve Bag Corporation). May 10, 1928. No Patent granted (Scaling fee not paid). Filling sacks. - Each bag is supported by its mouth during the filling operation in one of a series of carriages 22 mounted on wheels 27 running on a track 10. Each carriage comprises a rectangular frame 26 provided with a central opening 28 over which a fixed bag clamp 29 and a movable clamp 30 are arranged to operate. The movable clamp is carried on a plate 31 secured to the frame at one end by a link 32 and at the other by a lever 35 actuated by a hand-lever 38. The mouth of the bag is gripped between swing- ing jaws 69 and arms 46 the latter projecting from rock shafts 45 mounted in series of brackets 44. Spring-cushioned bolts 48 passing through openings in the frame 26 and in lugs, 47 projecting downwardly from the arms 46 limit the movement of the arms. Each arm is provided with a socket 52 and on each side a clamping beam 53 having a flattened side 54 is mounted in these sockets. A second rock shaft. 57 is mounted on each side of the clamp in the brackets 44. Claws 58 carrying the jaws 69 are pivoted on this shaft and are forced forward by springs 61 positioned on loose bolts between the claws and arms 59 projecting from the rock shaft. Each shaft 57 may be rocked by a hand-lever 62 attached to a rack 63 meshing with a pinion 66 on the shaft. A spring-actuated ball locks the rack in the position to which it has been moved by the hand-lever. The mouth of a bag is inserted in a carnage while the movable clamping member is away from the fixed clamping member, the sides of the bag being spread over the clamping beams and then the jaws 69 being brought down to engage and hold the bag by moving the hand-levers 62. The carriage is then brought beneath a filling hopper 11 the track 10 being arranged if desired with an incline. The bag may be suspended freely or may, if desired, be provided with a bottom support. After the bag has been filled the carriage is moved along the track until a lug on the frame is engaged by one of a series of projections 20 on a conveyer 19 by which it is carried under a sewing head 12 the lever 38 being operated to swing the movable clamp towards the stationary clamp and the hand-levers 62 operated to lift the jaws 69 so that the mouth of the bag is closed and the edges held together between the beams. The bottom of the bag is supported by a conveyer 13. The bag is then closed by a reinforced seam and delivered. The carriage 22 may be returned to the entrance end of the track by a loop or return track.