Patent GB-785161-A (GB)
Title: Dishwashing apparatus
IPC: A47L17/00
Filed: 1955-11-17
Abstract: 785,161. Dishwashing apparatus. HOOVER BALL & BEARING CO. Nov. 17, 1955 [Aug. 3, 1955], No. 32915/55. Class 138(1). A dishwashing apparatus comprises independently controlled hot and cold water sources providing a common supply, a single discharge spout 37, Fig. 2, a water line 58 and a diverter valve 47 capable of connecting the supply of water to the spout 37 or to the water line 58, means 61, Fig. 5, in the line 58 for creating a vacuum responsive to water flow in the line 58. a detergent reservoir 68, Fig. 2, a detergent line 67 connecting the reservoir 68 and the means 61, a hand brush unit, Fig. 6, connected by a flexible water hose 88 to the means 61, an air branch 64, Fig. 5, to the means 61, an air hose 86 connected to the branch 64 and leading with the water hose 88 to the hand brush unit, and manually operable means 89 at the brush unit for selectively closing and opening the air hose 86. The apparatus can be installed on a conventional kitchen sink fixture comprising hot and cold water valves, a mixing manifold and conventional swing faucet, after removing the latter from its mounting nipple 12, Fig. 2. An internally and externally threaded adapter tube 22, Fig. 3, has a plurality of slots 25 near its lower end to receive radially movable jaws 26 lockable to the inner surface of the nipple 12 by means of the tapered end 24 of a stem 23 threaded into the tube 22. A wrench receiving socket 27 is provided in the upper end of the stem 23 and flats 27a are formed on the tube 22 whereby a further wrench may hold it firmly as the stem is turned. The upper end of the nipple 12 is sealed by a washer 29 and nut 20 threaded in the tube 22. Secured to the nut 20 by a coupling nut 19 is a manifold 13, Fig. 2, connected by a passage 31 to the swivel spout 37 and a water flow control body 50. The diverter valve comprising a valve plug 47, stem 44 and control knob 46 is urged to the right in Fig. 2, by a spring 48 whereby water may be supplied to the spout. If the valve is moved to the left the water is diverted to the control body 50, which latter includes a vacuum breaker and is of known type. The body 50 is connected by the water pipe line 58 to a venturi body member 61, Fig. 5, secured in the vertical wall of a cap 75, Fig. 2, for a casing 72, 73 supported on the manifold 13. The body 61 has a water passage 60 connected by a restriction to a flared passage 62. The restriction is connected by a passage 63 with the detergent pipe line 67 which extends downwardly to the bottom of the detergent reservoir 68, Fig. 2, and thereafter upwardly to an open end 70. The line 67 is provided adjacent the bottom of the reservoir with an inlet opening 69 and at its upper end with a ferrule 52 having a small bore 53. The passage 63 also connects with the branch 64 parallel to the passage 62. The passages 62, 64 are connected by a coupling nut to the water hose 88 and air hose 86, respectively of a flexible double hose 80, Fig. 6, which at its outer end terminates in a handle 82 and brush 94. The water hose 88 is open at 87 to the brush tube 91 whereas the air hose 86 terminates in a lateral opening 85 covered by a screen cap 89. When water is supplied through the passage 62 and thence to the brush 94, air is drawn through the opening 85 and passage 64 to prevent detergent from being drawn up the pipe 67. Detergent may be entrained into the water stream merely by placing a thumb over the screen cap 89 to seal off the air. The crosssection of the bore 53, is smaller than any crosssection in the air passageways. A bracket is provided on the exterior of the casing part 73 to receive the handle 82 when the brush unit is not in use.