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    • 7. 发明专利
    • Improvements in electrolytic cells
    • GB569294A
    • 1945-05-16
    • GB1953943
    • 1943-11-23
    • DAVID JOHNSON EVANS
    • C25B9/17
    • 569,294. Electrolytic cells. EVANS, D. J. Nov. 23, 1943, No. 19539. [Class 41] An electrolytic cell suitable for the production of hypochlorites from brine, comprises a cup-like body a, of moulded synthetic resin, for example, in which are located two approximately semicylindrical graphite electrodes g with threaded apertures g to receive the graphite terminal rods m. The electrodes are spaced apart at h by means of spacers i which register with rabbets g in the electrodes and with grooves d in the cup-walls, the grooves being continuations of a groove b in the base of the cup, which groove is intersected by the inlet c for the electrolyte and registers with space h. A similar groove k in the cover intersects a hole n for the suction pipe through which the electrolytic products are withdrawn. The cover has apertures for the terminal rods m and is held down by a screwed ring l on to a suitably-apertured washer o, which, together with the cover, is properly located by a pin a . The upper ends of the terminals m are enclosed in moulded plastic insulation m through which extend cable-connectors m having rubber sleeves m . A cell-body of glass as an alternative to the moulded resin is also described. A pair of such cells may be arranged back-toback in a single vertically or horizontally arranged body divided by a partition in which is a lateral inlet for electrolyte, Fig. 5 (not shown). A single cell may be enclosed in an outer cooling jacket, or two or more cells may be arranged in, and with their inlets exposed to, a reserve body of electrolyte in a trough which serves to cool the cells. Two or more double-cell arrangements may be mounted on the top and sides of a junction box serving as a common inlet, the cells being in series or parallel, electrically and electrolytically.
    • 8. 发明专利
    • Improvements in dispensing apparatus
    • GB555875A
    • 1943-09-10
    • GB382142
    • 1942-03-23
    • DAVID JOHNSON EVANS
    • B67D7/72B67D7/74
    • 555,875. Dispensing apparatus. EVANS, D. J. March 23, 1942, No. 3821. [Class 81 (i)] [Also in Group XVIII] An apparatus for dispensing liquids comprises a frame on which are mounted containers for liquids to be mixed and for the mixed liquid to be dispensed, heating means for one of the liquids, an air-pump for forcing liquid pneumatically from one container to another and an aircontrolling distributing valve for determining the desired flow of liquid. In the arrangement shown a framework 10 supports a water tank 16 heated by an electrical heater in a sump 19, a pair of vessels 48 for concentrated liquid and a pair of vessels 34 tor diluted liquid to be dispensed. A control box 61, Fig. 4 encloses an electric motor 63, a diaphragm air pump 64 and a control valve mechanism actuated by knob 88 whereby air under pressure, admitted through a filter 67, can be selectively introduced above the surface of the liquid in the vessels 16, 48 to force it up through tubes 59, 53 into either of the vessels 34, the liquid from vessel 16 also being controlled by a valve 29. The control valve comprises a disc valve 79 rotatable to admit compressed air supplied to a chamber 74 to any one of the outlets 76 communicating with the vessels 16, 48, and a switch comprising a set of contact studs 94 whereby the motor is energized to supply compressed air whenever an air connection to an outlet 76 is made. The volume of liquid supplied to the vessels 34 is controlled by the operation of a pressure release valve 100, 103 on observation of the liquid level in the vessels.