Patent GB-621852-A (GB)
Title: Improvements in washing machine
IPC: A47L15/50
Filed: 1946-01-09
Abstract: 621,852. Washing crockery. KAHN. L. M. Jan. 9, 1946. No. 821. Convention date, March 3,1944. [Class 138(i)] In a dish-washing machine wherein the articles are cleansed by the circulation of water and pellets, the articles are contained in a cylindrical open work wire basket 202, Figs. 1 and 2, having a substantially semicylindrical tray 204 and a handle 212 pivoted to it at 208. The tray 204 is turned to a position above the basket, as shown in Fig. 1 when the basket and tray are inserted in the washing compartment. Two lugs 220 support the tray within the compartment 216 to form. with the tray, a baffle above the basket. On removal the tray assumes the position shown in Fig. 2 and serves to catch the drips. An impeller 236 in the bottom of the compartment 216 circulates the pellets 226 through the basket. A sterilizing device is provided comprising a cup 254 which retains a small quantity of water when the compartment is drained, and an electric heater 256 operated by a timing switch 228 to convert the water into steam. The switch 228 may be connected in series with safety switches 258, 260 which are closed by the weight of the basket on the lug 220 and by the lid of the compartment being closed respectively so that the switch 228 cannot be closed unless the switches 258, 260 are closed. The steam sterilizing device may be replaced by a violet ray lamp. The Specification as open to inspection under Sect. 91 comprises also other modifications. As shown in Fig. 1 (Cancelled) the articles are supported by springs 79 within a cylindrical open mesh wire drum 54 rotatably mounted in the washing compartment 40 of a housing 10. The drum 54 is rotated by a motor 16 which also drives, at a slower speed, through suitable gearing an openended cylindrical outer drum 42 having vanes 66 which carry small abrasive pellets 44 such as buckshot made from metal, a suitable plastic, or other hard material, to the top of the compartment 40 whence they fall through the inner drum 54 knocking caked matter from the articles, and then collect at the bottom of the outer drum 42 until engaged by the next vane 66. One or more doors are provided in each drum 42, 54 to admit the articles. A spout 75 in the lower part of the compartment 40 has a hinged door 76 through which the pellets may be removed into a movable receptacle 78 so that they may be cleaned. A timing switch 58 operates the motor 16 and valves 60, 68 in sequence so that first the drums are rotated with the compartment 40 full of water, then the water is pumped from the compartment and fresh water admitted. Next the fresh water supply is stopped and the compartment drained, and lastly the motor 16 rotating the drums is stopped. In a modification the outer drum 42 is omitted and the vanes are carried on the outside of the drum 54, the bottom of the washing compartmtent being curved instead of having the spout 75. In a further modification the articles are received in a stationary basket and impellers at the bottom of the washing compartment circulate the pellets. This subject-matter does not appear in the Specification as accepted.