2220

THE NEW ZEALAND GAZETTE.

[No. 100

No. 13196.—28th November, 1900.—JOHN COLLINS CLANCY, Analytical Chemist and Metallurgist, and LUKE WAGSTAFF MARSLAND, Solicitor, both of Mutual Life of New York Buildings, Martin Place, Sydney, New South Wales. An improved process for the elimination of zinc from sulphide ores, and the extraction and recovery of lead, silver, gold, and other metals therefrom, and from other sulphide ores.

Claims.—(1.) Our described process for the elimination of zinc, and the recovery of lead, silver, or other metals, from sulphide ores, consisting essentially in the following step-by-step operations: (a) Roasting the pulverised ore with the addition of lead-sulphate (1) at such degree of heat as will not volatilise the lead contained in the ore or the added lead-sulphate, or (2) at or above such temperature, with the further addition of calcium-oxide or lime; (b) transferring the roasted ore whilst still very hot immediately from the roasting-furnace into a vat containing a solution of sulphuric acid and water, and thereby causing the solution to become heated to boiling-point or thereabouts; (c) agitating the whole mixture in the said vat during the process of charging, lixiviating, extracting, and dissolving of the zinc in the same; (d) recovering lead-oxide by concentration from the ore and solution whilst undergoing treatment in the said solution; (e) converting the lead-oxide so recovered into lead-sulphate to be used for adding to succeeding charges of ore to be roasted in the furnace; (f) conducting the residual ore and solution into a settling-vat, and separating the solution from the ore by drawing off the solution into a separate vat; (g) extracting the zinc from the solution so separated by electrolysing the same, and recovering from the said solution the sulphuric acid therein contained for use in treating succeeding charges of roasted ore; and (h) recovering the lead, silver, and other metals contained in the residual ore by smelting the same in any suitable smelting-furnace; all substantially as and for the purposes set forth. (2.) In extracting metals from sulphide ores, roasting pulverised ores with the addition or admixture of lead-sulphate thereto either before or during roasting, in quantity proportional to the quantity of zinc or metallic sulphide the ore contains, substantially as described and explained. (3.) In extracting metals from sulphide ores, heating a solution of sulphuric acid for dissolving or extracting the zinc to a temperature of 100° C. or thereabouts by transferring heated roasted ore from the furnace into a vat containing such solution, substantially as described and explained. (4.) In extracting metals from sulphide ores, separating by means of concentrating-tables or other concentrating-apparatus whilst under treatment with sulphuric-acid solution during or simultaneously with the elimination of the zinc, the whole or part of the lead-oxide which is produced in the roasting of the ore, substantially as described and explained.

(Specification, 10s.)

No. 13199.—26th November, 1900.—WILLIAM BIRKMYRE YOUNG, of Fortrose, New Zealand, Inventor. An improved wire-strainer.

Claims.—(1.) In wire-strainers, the combination of a reel having slots such as A, A, opposite each other for engaging a staple such as B, with projections in one with the reel such as C, C, for allowing the handle D, D¹, to ship and unship, all substantially as described and explained and as illustrated in the drawing. (2.) In combination, a reel having slots A, A, in both flanges, one flange and part of the drum being slotted out for entering a wire in the length without cutting, or two ends bent so as not to slip, with a handle D, D¹, shipping into and between projections in one with the reel and a staple B, for maintaining the wire wound on the drum, the said reel to remain in the tightened wire, all substantially as shown and described, and for the purposes as set forth.

(Specification, 2s. 6d.; drawings, 1s.)

No. 13204.—29th November, 1900.—EMMA SUSAN MCRAE, of Prebbleton, Canterbury, New Zealand, Chemical Expert. An improved medicinal effervescing drink.

Claim.—A medicinal effervescing drink, consisting of Epsom salts, carbonate of soda, cream of tartar, magnesia, sugar, tartaric acid, saltpetre, and flavouring essence, in the approximate proportions specified.

(Specification, 1s.)

No. 13205.—29th November, 1900.—EMMA SUSAN MCRAE, of Prebbleton, Canterbury, New Zealand, Chemical Expert. An improved embrocation.

Claim.—An embrocation, consisting of turpentine, carbolic oil, camphorated oil, white-wine vinegar, powdered ammonia,
fowl-oil, and the whites of eggs in approximate proportions stated.

(Specification, 1s.)

F. WALDEGRAVE,
Registrar.

An asterisk (*) denotes the complete specification of an invention for which a provisional specification has been already lodged.

NOTE.—The cost of transcribing the specification, and the amount required for copying the drawings, have been inserted after the notice of each application. An order for a copy or copies should be accompanied by a post-office order or postal note for the cost of copying.

The date of acceptance of each application is given after the number.

Provisional Specifications.

Patent Office,
Wellington, 5th December, 1900.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted as under:—

No. 12884.—17th August, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY (LIMITED), of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of the Hon. Richard Clare Parsons, Director, Reginald Belfield, Electrician, and William Chapman, Electrical Engineer, all of 5, Norfolk Street, Strand, Westminster, England). Improvements relating to electric railways.

No. 13137.—5th November, 1900.—LUTHER WASHINGTON MANCE, of Wharf Hotel, Greymouth, New Zealand, Photographer. Improvements in photographic cameras.

No. 13157.—15th November, 1900.—ALFRED JOHN KNOCKS, of Otaki, New Zealand, Licensed Native Interpreter. A bot-fly lotion.

No. 13175.—20th November, 1900.—GEORGE SMART, Plumber, and CHARLES MALCOLM GRANT, Builder and Sawmiller, both of Stratford, New Zealand. A milking-bucket.

No. 13176.—21st November, 1900.—JAMES GRAHAM, of Collingwood Street, Nelson, New Zealand, House-decorator and Signwriter. An invention for the manufacture of improved bricks, and also of a mechanical contrivance for the manufacture of the same, and other cognate building purposes.

No. 13178.—19th November, 1900.—EWEN ALEXANDER CAMERON, of Queenstown, Otago, New Zealand, Civil Engineer and Architect. An improved spark-arrester and fuel-economizer.

No. 13179.—19th November, 1900.—JOSEPH JAMES COLLIS, of Devonshire House, Te Aroha, New Zealand, Cabinetmaker. An extending step-ladder.

No. 13180.—20th November, 1900.—HARRY REYNOLDS, of Colombo Street, Christchurch, New Zealand, Watchmaker. Improved calculating and indicating apparatus, particularly applicable to totalisator purposes.

No. 13183.—23rd November, 1900.—HENRY CASPERS, of Albury, New South Wales, Mechanic. Improvements in wheels for road vehicles.

No. 13188.—26th November, 1899.—JAMES YATE JOHNSON, of 47, Lincoln’s Inn Fields, London, England, Gentleman. Improvements in and apparatus for sterilising liquids.

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

No. 13191.—28th November, 1900.—CHARLES MURRAY CRUICKSHANK, of Kelso, Otago, New Zealand, Carpenter. An improved cock or faucet for water-tanks.

No. 13197.—27th November, 1900.—ADAM MORROW, of Eden Terrace, Auckland, New Zealand, Stoker. Improved spark-extinguisher.

No. 13200.—28th November, 1900.—MARK DAVIES, of Edinburgh Street, Auckland, New Zealand, Manufacturer. A composition for cooling or reducing the temperature of iron, brick, or wood buildings.

No. 13201.—28th November, 1900.—THOMAS EDWARD BRYANT, of Kinlock, New Zealand, Farmer. Improved fastening for harness, which can be easily unfastened in cases of runaways and accidents.

No. 13203.—1st December, 1900.—ERNEST CECIL GAGE, of Telegraph Office, Wanganui, New Zealand, Clerk, and HENRY GEORGE DREW, of Victoria Avenue, Wanganui aforesaid, Jeweller. Laterally adjustable duplex V-slide for back sights of military rifles.

No. 13207.—3rd December, 1900.—JAMES HENRY LOCKWOOD BARRY, of Mataura, New Zealand, Farmer. Improvements in wire-strainers.

No. 13208.—3rd December, 1900.—IGNATIUS SINGER, of Stokes’s Valley, Taita, Wellington, New Zealand, Analytical