Patent GB-688763-A (GB)
Title: Improvements relating to machines for washing drinking glasses and the like
Inventor: WADE STANLEY CHARLES
IPC: A47L15/44
Filed: 1949-09-30
Abstract: 688,763. Washing drinking glasses and the like. WADE & SON, Ltd., J. T., WADE, S. C., and MOONEY, F. L. H. Oct. 2, 1950 [Sept. 30, 1949], No. 25176/49. Class 138 (i). [Also in Groups XXIV and XXX] A drinking glass and like washing machine comprises a conveyer 13 having a pair of parallel belts 15,16, Figs. 3 and 4, on which glasses are placed inverted, water nozzles 41, 42, 43, 44, Fig. 2, to direct jets upwardly between and/or on opposite sides of the belts, to wash the inside and outside of each glass, and an injector, Fig. 5, for continuously introducing bactericidal or detergent liquid into the water before it reaches one or more of the nozzles. The machine, Fig. 2, comprises a sheet metal casing 10 formed with an opentopped tank 11 having a drain 12 and in which the endless conveyer 13 is removably mounted. The conveyer 13, Figs. 3 and 4, includes a base 14 of inverted channel section. The belts are driven from a friction clutch 25, Fig. 2, mounted with its axis parallel to the length of the conveyer. One part of the clutch is a plug 39, Figs. 3 and 4, carried by a worm shaft 24 mounted in a worm housing 26 on the conveyer. The shaft 24 drives through reduction gearing a shaft 27 which drives two pulleys 28, 29 carrying the belts 15, 16. The plug 39 is surfaced with friction material and is engageable in a sleeve 38 carried by a driving shaft 23 driven by belt and pulleys from a motor 19 mounted under the tank 11. The conveyer base 14 rests at one end on the tank bottom, at 40, but at the other end the weight is taken by the clutch 25. Should the clutch parts become slack due to wear of the friction material, the drive will be transmitted due to sideways pressure between the sleeve and plug. In a modification the sleeve 38 carries three or more longitudinal ribs spaced around its internal cylindrical surface and projecting inwardly therefrom. These ribs engage the friction material, preferably rubber, of the plug 39. The ribs may be formed by brazing or otherwise securing metal pins longitudinally along the internal surface of the sleeve. The top 17 of the base 14 is provided with holes 45, 46, 47 and 48 through which jets of water are projected upwardly from the nozzles. Washing water is supplied through a pipe 70, Fig. 5, to the injector body 71 which is connected at 82 to an inlet 54 of the machine (see Fig. 2). Bactericidal or detergent liquid is supplied to the injector through a pipe 79 from a reservoir (not shown). The inlet 54 communicates with a combined valve and distribution manifold 55 operable by a handle positioned outside the casing 10. The manifold supplies cold water to the nozzles 42, 43, 44, by a pipe 59, and to an electric heater 63 by a pipe 60, the heater connecting with the nozzle 41. The water pressure in the manifold 55 communicates by a pipe 61 with a diaphragm 65, the movement of which actuates a mercury switch 64 to close the electric circuits of the heater, motor 19, and a lamp 53 in a transparent tunnel 49 removably supported over the jets on projections 50 on the sides of the base 14. Baffles 51 and hanging gates 52 are provided in the tunnel.