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NEWSCIENCENEWSCIENCENEWSCIENCE Figure 2: View in vertical section of modified form of carburettor series of spaced, depending plates 14 are suspended from a hori- zontal member 15 to which a wire 16 has electrical contact through the medium of the bolt 17, which extends inwardly through the housing 1 and is threaded into the horizontal member 15. A second series of plates 18 is located intermediate the plates 14 and attached to the horizontal member 19, and has electrical con- tact with the wire 20 through the bolt 21. be formed in separate compartments, and a A gas passageway 22, in which a butter- further object of the invention is the provi- fly valve 23 is located, communicates with sion of means to periodically reverse the the gas generating chamber 4 through an direction of current flow and thereby alter- orifice 24. An air inlet chamber 25 has nate the evolution of the gases in the sepa- communication with the gas passageway rate compartments, to be later intermingled. 22 above the orifice 24. A downwardly With the foregoing objects as paramount, opening check valve 26 is in control of the the invention has particular reference to its openings 27, and is held inoperatively salient features of construction and closed by means of light spring 28. arrangement of parts, taken in connection An adjustable auxiliary air valve 29 is with the accompanying drawings... provided in the wall of the gas passageway Continuing more in detail with the draw- 22, which air valve is closed by the butter- ings, reference is primarily directed to fly valve 23 when Figure 3: A diagrammatic Figure 1, in which the reference numeral the butterfly valve — mechanism designates the carburetor housing which is _ is closed, but com- preferably constructed of bakelite or other municates with the suitable insulating material. The housing outside air when is so designed as to divide the carburetor _ the butterfly valve into a float chamber 2 and gas generating __ is open. Ce chamber 4, connected by a fluid passage 3. The operation of 4 Water under pressure pressure is forced _ the device is as fol- into the carburetor through an opening 5 —_ lows: which communicates with the float cham- The chambers 2 ber 2 through the medium of the sediment and 4 are first chamber 6 and the needle valve orifice 7, filled to the leve which is closed by a needle valve 8 when _ '‘a' with a solution the device is not in operation. A float9 of weak sulphuric 46 surrounds the needle valve 8 and is free to acid or other elec- move vertically relative thereto. trolyte not changed Depending from the cover 10 to the float by the passage o t chamber 2 are two ears 11, locatedat current spaced intervals on opposite sides of the therethrough, and needle valve 8. The members 12 are pivot- the opening 5 is ed to the ears 11, as shown. The weighted connected to a tank outer ends of the members 12 rest on topof of water, not the float 9, and their inner ends are shown. received in an annular groove in the collar The wire 16 is 13 which is rigidly attached to the needle next connected to valve 8. the positive pole Within the gas generating chamber 4, a __ of a storage battery or other source of direct current, and the wire 20 to the negative pole. Since the solution within the carburetor is a conduc- tor of electricity, current will flow therethrough and hydrogen will be given off from the negative or cathode plates 18 and oxygen from the positive or anode plates 14. The butterfly valve 23 is opened and the gas passageway 22 brought into communi- cation with a partial vacuum. Atmospheric pressure acting on the top of the check valve 26 causes it to be forced downward- ly, as shown in dotted lines. The hydrogen and oxygen liberated from the water at the plates 18 and 14 are drawn upwardly through the orifice 24 covered by the check valve 30, where they are subsequently mixed with air entering through the open- ings 27 and through the auxiliary air valve 29. When it is desired to reduce the flow of hydrogen and oxygen from the plates 18 and 14, the current flowing through the device is reduced, and when the current is interrupted the flow ceases. When the but- terfly valve 23 is moved to closed position, the check valve 26 is automatically closed by the spring 28. Any excess gas given off during these operations is stored in the space above the fluid where it is ready for subsequent use. water, not 50 + NEXUS APRIL - MAY 1998 Figure 2: View in vertical section of modified form of carburettor Figure 3: A diagrammatic view of a pole changer, showing its actuating mechanism i 1