Patent GB-191304956-A (GB)
Title: Improvements in Apparatus for Treating Plastic Substances such as Chocolate.
Inventor: BAKER GEORGE SAMUEL
IPC: A23G3/08
Filed: 1913-02-26
Granted: 1913-10-02
Abstract: 4956. Baker, G. S. Feb. 26. Materials descending by gravity; floor and scraper apparatus.- Plastic materials. such as chocolate or soap, are cooled or heated by depositing them in strips on a cooled or heated rotating table or tables the strip being deflected at each revolution of the table so as to take a spiral form. The tables, when more -than one table is used, are superposed, means being provided for conveying the material from one table to the other; the deflecting-devices are arranged so that the material is deposited from the edge of the table inwards, and from the centre of the table outwards alternately. In the apparatus shown, the plastic material contained in a jacketed hopper 3 is discharged by oppositelyrotating right and left handed worms through a nozzle 7 on to the edge of an upper rotating table 8. A series of deflecting - blades 10, carried by a cross - member 9 and adjustable simultaneously by a hand-operated worm-spindle 11, deflect the strip at each revolution of the table until it arrives at the centre. The strip is then fed downwards by a vertical worm 15 mounted in a casting 13<a>, and issues through perforations 16 on to a lower table 14 carried by a rotating standard 34. This standard rotates in bearings 35, 36 carried by crossmembers 29, 37 and in a foot-step bearing 38. The material is deflected outwards at each revolution of the lower table by adjustable blades 20 carried by a cross-member 17, and after passing under rollers 24 leaves the table by a discharge deflector. The tables 8, 14 each consist of a base 65, formed with a continuous spiral channel 66, and a top plate 68 secured to the base by bolts. Cooling or heating fluid is passed through the spiral channels 66. The fluid for the upper table is supplied through conduits 84, 83, in the casting 13<a> and standard 34 respectively, from a pipe 75 connected to a channel 71 in a sleeve 69 surrounding the standard 34. The fluid returns through a radial conduit 86<a> in the base 65 and conduits 87, 88 in the casting 13<a> and base 34, to a channel 72 in the sleeve 69 connected to a discharge-pipe 76. The cooling or heating fluid for the lower table is supplied similarly through a pipe 77, channelled sleeve 70, and a conduit in the standard 34, and returns through a radial conduit in the table base and a conduit 95 in the standard to the channelled sleeve 70 and discharge-pipe 78. In addition to, or instead of, the cooling-fluid, currents of cold air may be passed over the materials. The machine is driven by a main shaft 26 operating the table 14 through bevel-gearing 32, 33. The bevel-wheel 33 meshes with a second bevel-wheel 43 on a shaft 44 carrying gear-wheels 47, 48 engaging gear - wheels 49, 50 on a shaft 51. Either of the wheels 49, 50 may be locked to the shaft 51 by a clutch-member 52, and the shaft drives the worms in the hopper 3 through bevelgearing 54, 55. The shaft 26 also drives the worm 15 through chain gearing 58, 59, 60, a shaft 61, and helical gearing 61<a>, 62.