Nov. 15.] THE NEW ZEALAND GAZETTE. 2981

No. 20532.—5th January, 1906.—GEORGE CARRINGTON, of Lake Wanstead, New Zealand, Cook. An improved device for use in twisting and straining wires.*

Claims.—(1.) In means for twisting and straining wires of the nature described, a fixed pin formed with a head on one end, a casting mounted on such end so as to be free to rotate thereon, such casting being formed with outwardly extending members passing one on each side of the pin-head and provided with apertures therein to receive the ends of the wires to be twisted, and means whereby the casting may be prevented from rotation in one direction, substantially as specified. (2.) The improved device for use in twisting and straining wires, substantially as described and explained, and as illustrated in the drawings.

(Specification, 3s. 9d.; drawing, 1s.)

No. 20544.—8th January, 1906.—JOHN DALTON, of Rongotea, New Zealand, Farmer. An improved method of and means for use in protecting the banks of rivers from the action of the water, and for other analogous purposes.*

Extract from Specification.—The invention consists in an arrangement of logs placed across the current at a point where it commences to flow in towards the bank to be protected. These logs are so disposed and arranged as to allow of silt and other débris passing through them, so as to be collected between them and the bank, but to retard the flow of the current and direct it towards the centre of the stream.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 4s.; drawing, 1s.)

No. 21367.—14th November, 1905.—CHARLES ARTHUR JARVIS, of 31 Cressida Road, Highgate, London, England, Gentleman. Improvements in apparatuses for automatically delivering measured quantities of liquid disinfectant to flushing-cisterns.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claim.—In apparatus for automatically delivering liquid disinfectant to flushing-cisterns, and having a liquid-disinfectant-containing reservoir and a measuring-vessel depending therefrom, the employment of a leaden weight whose lower end enters and normally closes the aperture leading from the reservoir to the measuring-vessel, said weight being guided, to move vertically, by a spindle which is formed with a groove or is sufficiently cut away at that part where it normally passes through the cap of the measuring-vessel, that disinfectant can flow from the measuring-vessel when the inlet aperture b is closed, the lower end of said spindle fitting so as to completely close said aperture in the cap when the weight is raised to a sufficient extent, all substantially as set forth.

(Specification, 3s.; drawing, 1s.)

No. 21516.—26th July, 1906.—ROBERT CARL STICHT, of Queenstown, Tasmania, Australia, Metallurgist. An improved process for the treatment of complex sulphide ores.

Claims.—(1.) In the treatment of complex sulphide ores, or similar substances, as specified, the maintenance of the ores, or substances, and of their solid derivatives from chemical reaction with the blast and with each other in a molten liquid condition by the heat generated from the oxidation of the constituents of the sulphides when acted on by a blast of compressed air, substantially as described. (2.) The treatment of complex sulphide ores, or substances of the type specified, with a blast of compressed air in a suitable apparatus, wherein the degree and amount of heat necessary for keeping the ores, or substances, and their solid derivatives from chemical reaction with the blast and with each other, in a molten liquid condition, will be generated by the oxidation of constituents of the sulphides without the introduction thereto of any extraneous fuel or heat, substantially as described. (3.) The treatment of complex sulphide ores, or substances of the types specified, by means of a blast of compressed air, thereby producing a complete self-supporting fusion of the substances and their solid chemical products, without supplying carbonaceous fuel or heat to the seat of combustion or oxidation, together with the separation of the gold, silver, and [or] copper from the other metallic constituents by means of direct and intentional formation of a molten liquid copper matte, substantially as described.

(Specification, 4s.)

No. 21738.—5th September, 1906.—CHARLES ROBERT ROGERS, of No. 56 Clarke Street, South Melbourne, Victoria, Commonwealth of Australia, Factory and Chemical Expert. Improvements in winnowing and seed-grading apparatus.

Claims.—(1.) In winnowing and seed-grading apparatus, the combination with the hopper 10 of the rollers 11 and 12, spur-wheels 13 of different diameters on the ends of said rollers, and means such as sprocket-wheel 35 for imparting motion to said rollers, substantially as described and explained, and as illustrated in the drawings. (2.) In apparatus of the class described, the combination with the sieve 7 of a blower 17, the mouth of which is immediately above, and so arranged that the air passing from the blower is directed on to the material on the surface of said sieve, substantially as described and explained, and as illustrated in the drawings. (3.) In apparatus of the class described, the combination with the sieve-frames 1 and 2, of the means for imparting an oscillating motion to said frames, said means consisting of the rods 37 attached respectively at one end to said frames, and at their opposite ends connected to and operated by the eccentric 36, on the shaft 35, substantially as described and explained, and as illustrated in the drawings.

(Specification, 6s.; drawing, 3s.)

No. 21744.—1st September, 1906.—JESSE CARR DREWET, of Auckland, New Zealand, Inventor. Improvements in trolley-heads.

Claims.—(1.) An improved trolley-head having two wheels mounted “leading” and “trailing” in a common carriage in such a manner that the vertical irregularities of contact surfaces met by either wheel will be communicated to and divided between both wheels automatically. (2.) An improved trolley-head having two wheels mounted “leading” and “trailing” in a common carriage in such a manner that either ends of their respective axles are free to approach or recede from each other in either direction horizontally out of parallel to the radiations of any practical curve automatically, and still be free to rock vertically on a common centre. (3.) An improved trolley-head having two wheels mounted “leading” and “trailing” in a common carriage free to rock vertically on a common centre, the halves free to adapt themselves horizontally out of parallel to any practical curve, right or left, mounted on a flexible radial arm free to rotate automatically on its point of suspension to an angle of about 90 degrees right or left. (4.) An improved trolley-head such as described having an encircling ring J in the drawing mounted on a tapered pole-head I, both J and I being so fitted that I closes on and grips the pole by J being driven outward, and I releases the pole by J being driven inward for the purpose described. (5.) An improved trolley-head such as described and for the same purpose in which the “leader” pulley or wheel overbalances the “trailer.” (6.) An improved trolley-head such as described having springs such as M in drawings fitted to it in such a manner as to yield to flexure right and left by the hinged halves of said carriage, such springs having sufficient resiliency to restore said hinged halves of carriage to a straight line upon removal of bending tendency.

(Specification, 6s.; drawing, 1s.)

No. 21779.—10th September, 1906.—JOHN TINKER, of Christchurch, New Zealand, Engineer. Improved means for indicating the speed of motor-cars and other vehicles.

Extract from Specification.—The principle of working governing the means that have been devised consists in the compression of a fluid (preferably water) by power obtained from the rotation of the vehicle’s axle, which compressed fluid acts on a piston against the action of a spring to move a piston-rod that is connected to an indicator-hand adapted to move round a dial. The degree of compression of the fluid, and, consequently, the amount of movement imparted to the piston and indicator-hand, will depend upon the rate of rotation of the axle. The dial is divided off into spaces corresponding to distances, and to accord with the rate of revolution of the axle at speeds such that will cause the vehicle to travel over such corresponding distances during a fixed period of time.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 6s. 6d.; drawing, 2s.)