GB292457A - - Google Patents

Abstract

292,457. General Foods Co., (Assignees of Birdseye, C.). June 18, 1927, [Convention date]. Flat endless-belt conveyers. - Apparatus for freezing solid packages of foodstuffs such as fillets of fish, chops &c. comprises one or more pairs of impervious conveyer belts 1, 2, Fig. 1, preferably of metal, passing through a chamber 28 fitted with pipes 44, Figs. 5, 6 for spraying a freezing- liquid over the surfaces of the belts not in contact with the cartons. The lower belt 1 extends forwardly of the upper belt to form a feeding platform, the cartons being guided from a tray &c. 67 by side members 52. The gap between the belts may be adjusted for different thicknesses of goods by means comprising sliding frames 20 for the upper belt drums adjustable by screws 23 through bevel gear 24, 25 and handles 27. Pressure additional to the weight of the upper belt may be provided by roller weights 53, connected in articulated frames, the leading roller being larger than the others and secured by a strap. Loose weights 58, Fig. 5, may also be placed on the edges of the roller frames. The upper stretch of the lower belt is supported by angle irons 29, and the lower stretch'of the upper belt by channel members 30 suspended from cross-rods 40, Fig. 5, vertically adjustable on the drum frames 20. To prevent entrance of liquid to the space between the belts, adjustable flanges 31, Fig. 6, carrying flexible packing 33, 34 are provided on the members 30 to contact with the upper belt, transverse wipers in the form of boxes 47 filled with cotton waste are placed at the ends of the belt, and depending aprons 35<1>, 35 are fitted to the belt supports 29, 30. The belts are driven from a motor 9. Fig. 3, through worm gear, the vertical worms 13, 14 being slidably keyed to permit of adjustment of the gap between the belts. The frozen articles are delivered from the chamber on to a smooth surface of ice in a collecting trough 60. Specification 311,247 is referred to.