814
THE NEW ZEALAND GAZETTE.
[No. 35

No. 12291.—31st May, 1899.—HENRY VALENTINE SIMPSON, of 2, Army and Navy Mansions, Victoria Street, Westminster, London, England, Lieutenant, Royal Navy. Improvements in and relating to the treatment of wood with solutions for rendering it non-flammable and for other purposes.

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

Claims.—(1.) In the treatment of wood for rendering it non-flammable and for other purposes, the impregnation or partial impregnation of the wood with non-flammable and insoluble matters prior to the application of heat to the said wood, for the purpose specified. (2.) The method of treating wood for rendering it non-flammable and for other purposes, which consists in partially impregnating the wood with non-flammable and insoluble matter, then subjecting the wood to the action of live steam either with or without a vacuum, and then further impregnating the wood with the same non-flammable insoluble matter, substantially as described, for the purposes specified. (3.) A solution for the impregnation of wood composed of a mixture of salts which are soluble in water at a certain strength of solution, but which produce an insoluble precipitate when the strength of the solution is increased by evaporation, substantially as and for the purposes specified. (4.) The treatment of wood with a solution of phosphate of ammonia, sulphate of ammonia, and sulphate of zinc, in the proportions of 6, 6, and 2; or with a solution of phosphate of ammonia, sulphate of ammonia, and sulphate of magnesia, in the proportions of 6, 6, and 1; or with a solution of sulphate of ammonia, sulphate of zinc or of magnesia, and boric acid, in the proportions of 10, 6, and 4, substantially as and for the purposes specified.
(Specification, 6s. 6d.)

No. 12363.—3rd February, 1900.—THOMAS HOOD, of Medical Hall, Gisborne, New Zealand, Chemist, and FREDERICK TREWHEK, of Whenuakura, New Zealand, Railway Ganger. A preparation for preventing rust on iron and steel.*

Claim.—A preparation for preventing rust on iron and steel, consisting of coal-tar, benzine, and ferro-cyanide of potassium, mixed in the proportion and manner described.
(Specification, 1s. 6d.)

No. 12450.—5th March, 1900.—ROBERT LOCHHEAD, of Princes Street, Dunedin, New Zealand, Manufacturer and Importer. An improved flange for copper washing boiler-pans.

Claim.—The use of the beaded flange as marked A on drawing.
(Specification, 1s. ; drawings, 1s.)

No. 12484.—22nd March, 1900.—JOHN SCOTT, of Tay Street, Invercargill, New Zealand, Upholsterer. An improvement in bedding, padded sleeping-wrappers, poullices, and the like, for invalids and others.

Claim.—My improvement in bedding, &c., consisting of the application of a dust or substance with medicinal properties, produced from the waste from the stripper used in stripping New Zealand flax, substantially as explained, and for the purposes set forth in the specification.
(Specification, 1s. 3d.)

No. 12535.—12th April, 1900.—FRANCIS ARTHUR RICH, of Karangahake, Auckland, New Zealand, Mining Engineer (nominee of Samuel B. Christy, of Berkeley, California, United States of America). Electrolytic recovery of gold and silver from cyanide ore-extraction solutions.

Claim.—The process of progressive electro-concentration and recovery of gold and silver contained in the large volumes of dilute cyanide-solutions containing free alkali resulting from the extraction of gold- and silver-ores, tailings, and concentrates, which consists—first, in depositing the gold and silver electrolytically from said solution upon removable cathodes sufficiently numerous and large in area to secure efficient deposition; and, second, in making said removable original cathodes successively anodes in a smaller volume of cyanide-solution, and transferring and depositing electrolytically the thin film of gold and silver, already distributed over a large number of said original cathodes, upon a smaller number of secondary cathodes, also contained in said smaller volume of said cyanide-solution.
(Specification, 18s. ; drawings, 3s.)

No. 12536.—18th April, 1900.—WILLIAM BESLEY, of The Port, Nelson, New Zealand, Sailmaker. An improved method of securing horse-covers.

Claim.—An improved method of securing the rear end of a horse-cover by means of a canvas strap, faced with leather, and sewn or riveted to a strengthening-piece on the inside of the cover at one end, and having a rope fastening at the other end, so that the said strap will encircle the hind leg of the horse, in combination with four holes in the rump end of said cover, through the top or bottom one of which the said rope fastening is passed after encircling each hind leg of the horse, substantially as described, and illustrated in the drawings.
(Specification, 1s. 6d. ; drawings, 3s.)

No. 12538.—18th April, 1900.—WILLIAM THOMAS PEARCE and WILLIAM HENRY SPILLER, both of 203, Moray Street, South Melbourne, Victoria, Stove-manufacturers. An improved burner for connection to and use with a Primus heating-lamp.

Claims.—(1.) In a burner for connection to and use with a Primus heating-lamp, a cup or shell such as A, with a removable dividing disc and two or more air-inlets in its annular wall near its base such as B, so that when the cap is loosely seated therein a gas-generating and air-and-gas-mixing chamber is formed immediately below and communicating with the combustion-cup carrying the cap, so as to feed the mixed gas thereto, as described, and illustrated in Figs. 1, 2, 3, and 4 of the drawings. (2.) As a burner for attachment to and use with a Primus heating-lamp, a cup such as A, a gas-generating and gas-and-air-mixing chamber, with openings such as B, and a short double-threaded tubular shank C and bored nipple D, in combination with suitably shaped cap seated loosely in the combustion-cup, or preferably with a series of caps such as shown in drawings (Figs. 5, 6, and 7) used interchangeably, as described and illustrated.
(Specification, 4s. ; drawings, 5s. 6d.)

No. 12539.—19th April, 1900.—ISAAC WHEELDON, of 335, Collins Street, Melbourne, Victoria, Mining Engineer (assignee of self and William Pell, of 159, Wellington Street, Flemington, Victoria, Mechanical Engineer). Improvements in or for use in connection with rifles, revolvers, and the like.

Claims.—(1.) A guide, recess, or like means of localising wire or the like in the path of the bullet of a firearm, substantially as and for the purposes set forth. (2.) A die for the reception of wire or the like arranged in the path of the bullet of a firearm, substantially as and for the purposes set forth. (3.) A firearm-barrel altered at the muzzle to have means for the localising of wire or the like in the path of the bullet, substantially as and for the purposes set forth. (4.) A firearm-barrel altered to provide a die for the reception of wire or the like, substantially as and for the purposes set forth. (5.) An attachment to a firearm-muzzle having means whereby wire may be set in the bullet’s path, substantially as and for the purposes set forth. (6.) An attachment to the bayonet of a firearm whereby, when the bayonet is fixed on, wire may be set in the bullet’s path, substantially as and for the purposes set forth.
(Specification, 5s. ; drawings, 5s. 6d.)

No. 12550.—20th April, 1900.—THE MOORE ELECTRICAL COMPANY, a corporation duly organized and existing under the laws of the State of New York, United States of America, Manufacturers of Electrical Appliances (assignees of Daniel McFarlan Moore, of Newark, Essex County, New Jersey, United States of America, Electrical Engineer). Improvements in vacuum-tube lighting.

Claims.—(1.) In a system of vacuum-tube lighting, the combination with the tubes to be excited of an alternating-current generator in direct conductive or inductive connection therewith, and organized as described to produce an alternating impressed e.m.f. of abruptly changing value. (2.) In an alternating-current dynamo, a rotor consisting of a revolving mass of iron provided with a fixed exciting coil surrounding the axis on which the rotor revolves, and having radially extending polar projections presented to the poles of a stator, the iron of which is extended around to the opposite end of the rotor to complete the magnetic circuit, as and for the purpose described. (3.) In a dynamo-electric machine, a rotor and stator having polar teeth or projections, the lengths of whose opposing faces are proportioned as described to give a constant magnetic flux in the machine. (4.) In a dynamo-electric machine, a rotor and stator having polar teeth or projections of one