2060
THE NEW ZEALAND GAZETTE.
[No. 78

No. 19714.—13th July, 1905.—The Honourable CHARLES ALGERNON PARSONS, of Heaton Works, Newcastle-on-Tyne, England, Engineer. Improvements in and relating to valves of the piston type.

Claims.—(1.) A valve having two rings of ports arranged to be opened and closed by a sliding-piston characterized by conical or other valve-faces adapted in the extreme position of the piston to prevent leakage to the ring of ports which it is desired to retain closed. (2.) A manoeuvring valve of the piston type, substantially as described with reference to the drawings.
(Specification, 4s.; drawing, 1s.)

No. 19726.—13th July, 1905.—JAMES PALMER CAMPBELL, of Wellington, New Zealand, Solicitor (nominee of Rudolf Braun, of Westinghouse Works, Trafford Park, Manchester, England, Electrical Engineer). Improvements in magnetic brakes for railway and other vehicles.

Claims.—(1.) A magnetic brake, for railway and other vehicles, of the kind described, in which the shoes forming the poles of the electro-magnet extend side by side along the length of the rail or wheel whereby the reluctance of the magnetic circuit exterior to the magnet is reduced. (2.) A magnetic brake having shoes located side by side along the length of the rail in which the magnet core is constructed, and energised by a coil or coils, substantially in the manner described with reference to any of the forms illustrated in the drawings.
(Specification, 4s.; drawing, 1s.)

No. 19744.—17th July, 1905.—ROBERT HAYLOCK OWEN, of Wellington, New Zealand, Lieutenant-Colonel of New Zealand Militia. An improved appliance for use in ascertaining distances or altitudes, the same being particularly applicable for use in range-finding.

Claims.—(1.) In appliances for use in ascertaining distances and altitudes, a pair of mirrors mounted in a vertical condition upon a base-plate and the reflecting-surfaces of which are adjustable in regard to the horizontal angle between them, an arm pivoted upon the base-plate and extending longitudinally along its top face, and adapted to turn one of the mirrors in a horizontal plane when it is moved, a pointer operated by the free end of the pivoted arm, scale markings of a direct ratio between a measured base and the cotangent of a right angled triangle, over which the pointer passes, and a sight at the back end of the base-plate in a line with the centre line thereof, substantially as specified. (2.) In appliances for use in ascertaining distances or altitudes, a base-plate the back end of which is provided with a sight in a line with the centre line thereof, an arm pivoted upon the top face of the base-plate at its fore end and extending to the back end thereof, a pointer operated by the free end of such arm, scale markings over which the pointer passes, a mirror held in a vertical condition upon the pivoted end of the arm and facing towards the back end thereof, a plate pivoted to the base-plate, a second mirror carried in a vertical condition upon such plate, and means whereby the reflecting-faces of the two mirrors may be made parallel, or caused to assume any desired angle to each other, substantially as specified. (3.) In appliances for use in ascertaining distances or altitudes, a base-plate the back end of which is provided with a sight, an arm pivoted on the top face of the base-plate at its fore end and extending to its back end, means whereby such arm may be moved in either direction, a mirror supported in a vertical position upon the fore end of the arm, and capable of being adjusted to any angle with regard to the centre line thereof, a plate pivoted to the fore end of the base-plate, a second mirror carried upon such plate and capable of being adjusted to any angle with regard thereto, a pointer connected to the free end of the pivoted arm and adapted to be operated thereby, and scale markings upon the appliance over which the pointer passes, substantially as specified. (4.) The appliance for use in ascertaining distances or altitudes, substantially as described and explained, and as illustrated in Figs. 1, 2, and 3 of the drawings. (5.) The appliance for use in ascertaining distances or altitudes substantially as described and explained, and as illustrated in Figs. 4, 5, and 6 of the drawings.
(Specification, 7s. 6d.; drawings, 2s.)

No. 19746.—13th July, 1905.—WILLIAM COYLE, of Devonport, near Auckland, New Zealand, Retired Captain Imperial Service, HERBERT GENTLES, of Auckland aforesaid, Merchant, and JOHN MANNERS MORRAN, of Auckland aforesaid, Manufacturer. An automatic safety-pin.

Extract from Specification.—This result is obtained particularly by a loop in the slide being made to engage a catch in the pin and thereby hold the point of the same within the grab, the action and character of which, together with the other parts of the invention, are more fully described.
[NOTE.—The above extract from the specification is inserted in place of the claims.]
(Specification, 5s.; drawing, 1s.)

No. 19750.—18th July, 1905.—JOHN LEWIS WEAVER, of Boise, Idaho, United States of America, Manufacturer. Improvements in and relating to method of, and apparatus for, placer-mining.

Extract from Specification.—In my improved apparatus I employ a rotary screen or “grizzly” of improved construction, in which the coarser particles of rock, sand, and metalliferous earth are separated and removed, and the finer particles which have passed through the screen are treated in an amalgamating tank or receptacle of approximately V-shape in cross section. The water supply-pipe is located at the bottom of the tank, and is supplied with a plurality of jet-nozzles having parallel contracting-passages inclined from the perpendicular, and parallel elongated discharge openings, and having their discharge ends inclined towards the delivery end of the tank. Each jet-nozzle projects upwardly through the body of earth-laden water two diverging flat or sheet-like jets or streams of water, which rise through the earth-laden water in the tank upon each side of the transverse centre of the tank, diverging outwardly towards the sides of the tank as they approach the surface of the body of earth-laden water; and then curve outwardly and downwardly along the inclined sides of the tank, imparting to the contents of the tank a regular, gyratory, rolling, or wave-like motion in separate columns on each side of the transverse centre of the tank, which continues over the amalgamating-plates which are supported upon the sides of the tank. These upwardly, outwardly, and downwardly curving sheets or flat jets of water from the nozzles are also inclined towards the delivery end of the tank, which cause the moving, rolling waves of earth-laden water to assume a spiral movement, which continues from the feed end to the delivery end of the tank, each succeeding jet taking up the movement where the preceding jets loses its propulsive force, thus augmenting and continuing the rolling spiral movement of the earth-laden water from end to end of the tank, thereby effectively maintaining the earth in suspension in the water, so as to prevent gravitation to the bottom of the tank, and moving a very large proportion, if not all, of the particles of free gold and other precious metals into contact with the amalgamating plates, which attract and hold them. The inclined sides of the V-shaped tank or receptacle are covered with overlapping series of amalgamating-plates coated in the usual manner with quicksilver. These plates may be the ordinary flat plates used in the art, or they may be formed with rectangular pockets in their lower ends to collect and save any surplus amalgam which falls from the plates, and also any particles of the amalgamated metals which become dislodged from the plates.
[NOTE.—The above extract from the specification is inserted in place of the claims.]
(Specification, 11s.; drawing, 7s.)

No. 19758.—19th July, 1905.—HENRY JOHN LLOYD, of Waimarino, Palmerston North, Wellington, New Zealand, Settler. An improved daylight-reflector for lighting the interior of rooms and the like.

Claims.—(1.) A daylight-reflector, comprising in combination a frame provided with grooves, sheets of not-readily oxydizable metal having polished surfaces carried within said grooves, and sheets of glass carried in said grooves above the metal sheets, substantially as specified. (2.) A daylight-reflector, consisting of the parts constructed, arranged, combined, and operating substantially as specified, and as illustrated in the drawing.
(Specification, 2s.; drawing, 1s.)

No. 19760.—20th July, 1905.—JAMES ROBINSON HATMAKER, of No. 25, Rue de la Faisanderie, Paris, France, Gentleman. Improvements in milk foods.

Claims.—(1.) The described dry product, composed of milk solids and oleo fat, produced by drying rapidly as indicated emulsions of partially or wholly separated milk and oleo fat. (2.) The described dry product, composed of milk solids and cotton-seed oil, produced by drying rapidly as indicated emulsions of partially or wholly separated milk and cotton-seed oil. (3.) The described products, composed of milk solids and a suitable fat or oil such as oleo fat