GB690215A - Improvements in the packaging of powdery, granular, flaky and other fluent solid materials - Google Patents

Abstract

690,215. Delivering powder in measured quantities. ROSE BROS. (GAINSBOROUGH), Ltd. July 6, 1950 [April 21, 1949], No. 10588/49. Class 106 (v) [Also in Groups XVII and XXX] In apparatus for filling containers, such as bags or cartons, with measured quantities of powdery, granular, flaky or like fluent solid materials in which the powder, etc., is fed from a stationary hopper or supply line to the apertures of a rotatable apertured wheel below which the containers are conveyed in succession, the powder passes from the hopper into a collecting tunnel forming with the operative surface of the wheel a substantially enclosed space covering one or more of the apertures, the tunnel extending forwardly of the hopper and converging to a width substantially equal to that of the apertures, and a wall of the tunnel acting as a deflector for guiding the powder towards the moving apertures. As shown, powder 11 flows from a hopper 12 into a collecting tunnel 13 forming with the surface of an apertured wheel 16 a substantially enclosed space, the wheel being formed with a number of apertures 14 constituting the entrances to measuring pockets 17, 18 having pivoted bases 19 which are opened at intervals by cam mechanism to discharge the powder through shoots 22 into cartons 23 moved into position by a chain conveyer 24. The apertures are arranged in an annular channel 26, the outer wall of which is extended upwardly as a flange 25 to form the outer wall of the tunnel. The converging inner wall 15 of the tunnel acts as a deflector for guiding the powder into the channel and its forward wall 30 extends downwardly into the channel to form a scraper for levelling off the powder. The wheel 16 carries the upper portions 17 of the pockets and is carried by pillars 27 extending upwardly from a chain wheel 28 driven by worm and wheel gearing. The lower parts 18 of the pockets are carried by a wheel 33 which is formed with bosses 34 slidable on the pillars and is adjustable axially to vary the volume of the pockets by rotation of a shaft 41 which is in threaded engagement with a sleeve 38 supporting the wheel. The shaft is rotatable through worm and wheel gearing 66 driven by a shaft 64 which may be operated manually or automatically as described in Specification 686,906. The cartons are carried in pockets 58 on the conveyer which have movable bases carried by pivoted arms 61 which are raised by a stationary cam 63 as the cartons approach the filling position so that their open ends embrace the mouths of the shoots 22.