1862
THE NEW ZEALAND GAZETTE.
[No. 87

No. 13017.—27th September, 1900.—THE INTERNATIONAL CHEMICAL COMPANY, a corporation of New Jersey, having its principal office at 60, Grand Street, Jersey City, New Jersey, United States of America (assignee of Charles Borrows Jacobs, of East Orange, Essex County, New Jersey aforesaid, Chemist). Improvements in silicides, and process for their manufacture.

Claims.—(1.) The process of making alkaline-earth silicides which consists in reducing a compound containing the alkaline-earth metal combined with oxygen, in the presence of siliceous material, by heating with carbon in the electric furnace. (2.) The process of making alkaline-earth silicides which consists in reducing a mixture containing the alkaline-earth metal and the siliceous material by heating with carbon in the electric furnace. (3.) The process of making alkaline-earth silicides which consists in reducing a compound containing the alkaline-earth metal combined with oxygen and mixed with silica, by heating with carbon in the electric furnace. (4.) The process of making a compound of silicon and hydrogen combined in equal molecular proportions which consists in reducing a mixture containing the alkaline-earth metal and the siliceous material by heating with carbon in the electric furnace and treating the resulting silicide with dilute acid. (5.) The chemical compound consisting of silicon combined with an alkaline-earth metal, in the proportion represented by the formula RSi₂, R representing the alkaline-earth metal, the same being white or bluish-white substances of metallic appearance, having a crystalline fracture, oxidizing slowly in the air to silicon-dioxide and an alkaline-earth-metal oxide, and decomposed by pure water, with the formation of the alkaline-earth-metal hydrate, silica, and free hydrogen. (6.) The chemical compound consisting of silicon combined with barium, in the proportion represented by the formula BaSi₂, the same being white or bluish-white substances of metallic appearance, having a crystalline fracture, oxidizing slowly in the air to silicon-dioxide and barium-oxide, and decomposed by pure water with the formation of barium-silicide, silica, and free hydrogen. (7.) The compound consisting of silicon and hydrogen combined in equal molecular proportions, the same being a yellow crystalline non-explosive compound, insoluble in water and in acids, and soluble in caustic-alkali solutions.
(Specification, 6s. 3d.)

No. 13018.—27th September, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of Charles Ira Young, of Land Title Building, Philadelphia, Pennsylvania, United States of America, Electrical Engineer). Improvements in systems of electrical distribution.

Claims.—(1.) In an electrical installation operated on the three-wire system, a regulating generator having its armature included in the circuit of the neutral or balancing conductor of the system, and its field-magnet coils arranged so that their magnetizing effect varies as the difference between the loads on the two sides of the system varies, for the purpose specified. (2.) A regulating generator of which the field-magnet coils are connected in series with the armature and with the neutral or balancing conductor of the three-wire system, for the purpose specified. (3.) Three-wire systems of electrical distribution arranged and operated substantially as described with reference to the drawing.
(Specification, 6s.; drawings, 5s. 6d.)

No. 13019.—27th September, 1900.—JOHN ARMSTRONG, of 46, Lombard Street, London, England, Engineer. Improved process and apparatus for obtaining zinc and other volatile metals from ores or mattes.

Claims.—(1.) The process of obtaining volatile metals such as zinc, cadmium, mercury, or antimony from their respective ores or compounds which consists in reducing the metal out of contact of air, passing the fumes through incandescent fuel and into or through a bath of the metal in a liquid state and kept at a temperature a little above its fusing-point. (2.) In a furnace for reducing, volatilising, and condensing volatile metals such as zinc, cadmium, antimony, or mercury, arranging a central closed column for the charge of oxide, closed columns for the fuel, all converging into a central reduction-chamber below, means for passing a blast at numerous points through the fuel, and means for drawing off the fumes through the fuel and into or through a bath of the liquid metal, substantially as described. (3.) The furnace for volatilising, reducing, and condensing an easily volatilisable metal or metals, and simultaneously reducing and fluxing other metals in the ores or the like, and recovering said metals free from easily volatilised metal, constructed and operating substantially as described. (4.) The method of condensing fumes of easily volatilisable metals such as zinc, cadmium, antimony, or mercury in the process of reduction from the ore or compounds which consists in passing them through a bath of the metal kept at a temperature a little above its fusing-point.
(Specification, 6s. 6d.; drawings, 8s.)

No. 13021.—28th September, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of James Edgar Miller, of Edgewood Park, Allegheny, Pennsylvania, United States of America, Electrical Engineer). Improvements in mechanism for generating variable electro-motive force.

Claims.—(1.) An arrangement for supplying electrical energy with a variable potential difference from a source having a substantially constant electro-motive force by means of a motor and a generator, the field-magnets for the motor and generator having their windings connected in series through a resistance, and with a bridge across the circuit of said windings comprising a switch-arm for progressively transferring resistance from one field-magnet circuit to the other. (2.) The arrangements for supplying electrical energy with a variable potential difference substantially as described, and illustrated in the drawings.
(Specification, 3s. 3d.; drawings, 5s. 6d.)

No. 13022.—25th September, 1900.—ADAM HAMILTON, of Winton, New Zealand, Farmer. Improvements in wire-strainers.

Claims.—(1.) A wire-strainer, being the combination of a barrel A with a flattened face, with two fixed flanges B, B, to cause each coil of wire H to wind upon the previous one, flanges B, B, having holes E, E, to carry pins F, G, to secure the wire and tightened; the whole turned by any suitable movable handle catching both sides of the barrel and flanges and the pin D, all substantially as described and as explained and as illustrated, and for the purposes set forth. (2.) The combination of the above wire-strainer with a separate strainer X, Y, all substantially as described and as explained and as illustrated, and for the purposes set forth.
(Specification, 2s. 3d.; drawings, 3s.)

No. 13026.—6th August, 1900.—JOHN THOMAS JOHNSON, of Waipori, New Zealand, Mine-manager. Hydraulic-nozzle dredge.

Claims.—(1.) In hydraulic sluicing, the combination of a swivelled uptake and jet B, B¹, B², C, carried on a dredge-pontoon A, worked by water under pressure, which also works the other dredge-machinery, brought on to the pontoon by pipes, constructed to allow of inevitable movements of the various parts, with a breaking-down jet and gold-saving tables, substantially as shown and described, and for the purposes specified. (2.) In sluicing under pressure, in combination, pontoons A, A¹, A², for carrying the various machinery and pipes, an elevator B, B¹, B², an elevating-jet C, C¹, a breaking-down jet capable of movements of direction D, D¹, D², tables or boxes E, main F, swivelled or universal-jointed pipes G, G, and a distributing-pipe H, all substantially as described, and for the purposes as set forth.
(Specification, 2s. 6d.; drawings, 5s. 6d.)

No. 13034.—3rd October, 1900.—THOMAS EDWARD WOODHAMS NOYES, of 31, O'Connell Street, Sydney, New South Wales, Merchant (assignee of George William Green, of Woy Woy, New South Wales, Carpenter). Improvements in trays, drawers, and other egg-frames for incubators.

Claims.—(1.) In an incubator, a tray, or drawer, or frame having as its essential feature a false bottom adapted to be reciprocated beneath confined egg-spaces. (2.) In an incubator, a tray, drawer, or other egg-frame having stretched across it a false bottom, preferably of textile fabric, adapted to roll or wind upon rollers at either end, substantially as described and explained. (3.) In an incubator egg-holder, the combination with a main frame such as A, having a bottom such as A¹, of rollers such as B and C, a false bottom such as D, and a movable secondary frame such as E having cross-pieces such as E¹, substantially as described and explained, and as illustrated in the drawings.
(Specification, 3s. 9d.; drawings, 5s. 6d.)