APRIL 2.] THE NEW ZEALAND GAZETTE. 935

(2.) Apparatus for the generation and application of electric currents for electrolysis, comprising an electrical conductor moving in a magnetic field and having electrodes attached to it on both sides of the said field and extending into an electrolyte, substantially as described. (3.) Apparatus for the generation and application of electric currents for electrolysis, comprising a circular electrical conductor having electrodes arranged concentrically upon it, which conductor rotates between magnetic poles situated between the electrodes, substantially as described. (4.) Apparatus of the kind referred to in claim 3 having four sets of electrodes, two sets directly connected with the circular electrical conductor and the other two connected electrically with each other, substantially as described. (5.) Apparatus of the kind referred to in claims 3 and 4, comprising a disc of conducting material rotated in a horizontal plane and extending through an air-gap in the inner wall of a closed annular box which is a magnet, concentric cylinders of suitable material depending from the said disc in two sets, one set on each side of the said air-gap, fixed concentric cylinders of suitable material also in two sets, one set on each side of the air-gap, contained in a separate vessel, there being a depending cylinder between each fixed cylinder and the next, and electrical connection between the two vessels, substantially as described. (6.) Connecting the fixed electrodes in the outer cell with the fixed electrodes in the inner cell by a conductor passing through the air-gap, substantially as described. (7.) Connecting the periphery of the armature by a rubbing contact with a conductor passing through the air-gap to the electrodes on the opposite side of the magnetic field, substantially as described. (8.) In apparatus such as is referred to in claim 5, one or more horizontal flanges on the inner surface of each depending cylinder, and a pipe passing from each depending cylinder of the inner set to a depending cylinder of the outer set, so that mercury delivered to the inner surface above the lower flange of each depending cylinder of the inner set may, after rising up the cylinder, pass through the said pipe to flow down the inner surface of a depending cylinder of the outer set, substantially as described. (9.) In electrolytic apparatus comprising two sets of cylindrical revolving electrodes faced with mercury by centrifugal action, an arrangement for transmitting the mercury from the one set of revolving electrodes to the other set, substantially as described. (10.) In electrolytic apparatus of the type described, an electrode consisting of mercury moving under centrifugal action, substantially as described.

(Specification, 9s. 6d.; drawings, 3s.)

No. 16081.—12th March, 1903.—JOHN WARDEN LATIMER, of 1141, Dunning Street, Chicago, Cook, Illinois, United States of America, Mechanic. Mowing-machines.

Claims.—(1.) In a mowing-machine, a gearing-frame, the coupling-frame pivoted thereto, the swivel hinge F, the cutting-apparatus pivotally connected thereto and having a reciprocating knife, a crank upon the gearing-frame, a pitman in two parts, and a vibrating hanger pivoted to said swivel hinge by means of which said pitman is controlled at the junction of its two parts, all combined substantially as described. (2.) In a mowing-machine, a gearing-frame having a crank-shaft journalled therein and provided with a crank, a coupling-frame pivoted to the said gearing-frame and adapted to rise and fall at its grassward end, a finger-bar secured to said coupling-frame by means permitting movement of two axes, whereby it may rock on a substantially horizontal axis transverse to the lateral advance of the machine and be folded upward at its outer end, a reciprocating knife, a jointed pitman connecting said crank to said reciprocating knife, and a down-hanger secured to a support upon the coupling-frame and connected to the joint of the said pitman, means for raising the cutting-apparatus simultaneously at both ends, and means for raising the outer end independently of the inner, all combined substantially as described. (3.) In a mowing-machine, a gearing-frame having a cranked shaft journalled therein, a coupling-frame, a swivel hinge pivoted to said coupling-frame, the finger-bar pivoted to said swivel hinge, said parts having combined therewith the support M secured to the said swivel hinge, a vibrating hanger pivoted in the said support, a reciprocating knife, said reciprocating knife connected to the crank of said crank-shaft by a two-part pitman, said two-part pitman connected to said vibrating hanger, substantially as described. (4.) In a mowing-machine, a gearing-frame, a coupling-frame pivoted thereto, a reciprocating cutting-device pivotally connected to said coupling-frame, lifting mechanism adapted to raise and sustain the cutting-apparatus at both inner and outer end simultaneously, combined with a separate lifting-lever and supplemental spring adapted to raise the outer end of the cutting-apparatus to a higher position at the will of the attendant, substantially as described. (5.) In a mowing-machine, a gearing-frame, a coupling-frame pivoted thereto, a reciprocating cutting-device pivotally connected to said coupling-frame, lifting mechanism adapted to raise and sustain the cutting-apparatus to both inner and outer end simultaneously, combined with a spring adapted to raise the outer end of the cutting-apparatus to a higher position at the will of the attendant, and a pivoted arm, to which the spring is connected so that the line of draft of the spring shall cross the axis of movement of said arm and thus render the spring inoperative while the cutting-apparatus is in working position, substantially as described. (6.) In a mowing-machine, a gearing-frame, a coupling-frame pivoted thereto, a reciprocating cutting-device pivotally connected to said coupling-frame, lifting mechanism adapted to raise and sustain the cutting-apparatus at both inner and outer end simultaneously, combined with a spring adapted to raise the outer end of the cutting-apparatus to a higher position at the will of the attendant, and a pivoted arm to which the spring is connected so that the line of draft of the spring shall cross the axis of movement of said arm and thus render the spring inoperative while the cutting-apparatus is in working position, said arm having as one piece therewith a lever controllable by the operator, substantially as described. (7.) In a mowing-machine, the main gearing-carriage, a crank-shaft mounted therein, the coupling-frame pivoted thereto, the cutting mechanism pivoted to the said coupling-frame, a two-part pitman connecting said crank to said cutting-apparatus, a down-hanger controlling the said two-part pitman, said down-hanger clasping the two parts of said two-part pitman where joined, substantially as described. (8.) In a mowing-machine, a gearing-frame, a coupling-frame pivoted thereto, a swivel hinge F, a cutting-apparatus pivotally connecting thereto and having a reciprocating knife, a crank upon the gearing-frame, a pitman in two parts connecting the crank and reciprocating knife, and means supported by the swivel hinge for supporting and guiding the pitman at the junction of its two parts, substantially as described.

(Specification, 8s.; drawings, 4s.)

No. 16082.—12th March, 1903.—JAMES FINNEY MCELROY, of 413-423, North Pearl Street, Albany, New York, United States of America, Consulting Engineer. Improvements in electric-lighting systems.

Claims.—(1.) An electric system particularly designed for car-lighting from an axle, having a variable-speed dynamo, an automatic connection-switch, electric lamps and a storage battery, and a regulator for the dynamo compensating for variations in speed, variations in the number of lamps, and variations in the demand of the battery for charging-current, so as to maintain the potential of the dynamo constant, but of different values at the lamps and at the battery. (2.) In a system of the kind described, with a dynamo operating the lamps and simultaneously charging the battery, the employment of a magnet to measure the line potential and to set in action mechanism, such as an electric motor and field-magnet resistance controlled thereby, which will correct any departure from the normal potential delivered by the dynamo. (3.) In a system of the kind described, in which individual lamps are to be turned on or off, a main regulator for the dynamo responding to the battery-charging potential, and a secondary regulator that will measure the potential of the lamp circuit and adjust the potential-reducing resistance in series with the lamps. (4.) In a system of the kind described, a secondary regulator measuring and determining the potential of the lamp circuit, and adjusting-devices for dimming the lamps, substantially as described. (5.) In a system of the kind described, an automatic connection-switch for the dynamo having an operating magnet or motor and a potential-measuring magnet controlling the said magnet or motor. (6.) In a system of the kind described, a motor supplied from the battery instead of the dynamo, and operating the dynamo-regulator. (7.) In a system of the kind described, the employment of means, such as a coil in series with the battery, for limiting the flow of charging-current into the battery, and adjusting such current according to the condition of the battery-charge. (8.) In a system of the kind described, the use of a single magnet, in a shunt circuit bridging the dynamo terminals, to operate the connection-switch of the dynamo and also control the dynamo-regulator. (9.) In a system of the kind described, the arrangement of the lamps in groups with a resistance in each group, and automatic devices for regulating the dynamo and removing the said resistance when the dynamo is disconnected and the lamps are operated by the battery. (10.) In a system of the kind described, the means for gradually transferring the lamps from the battery to the dynamo, and raising the dynamo potential so that it will charge the battery with the simultaneous introduction of the lamp-resistance, substantially as set forth. (11.) In a system of the kind described, a speed-limiting device for the motor that works the regulator, substantially as set forth. (12.) The arrangement of