574
THE NEW ZEALAND GAZETTE.
[No. 21

an arm at the opposite end of said pin extending into the plunger, the socket, the plunger and spring thereof designed when operated to raise the arm and depress the dog, as and for the purpose specified.
(Specification, 11s.; drawings, 16s. 6d.)

No. 12445.—7th May, 1900.—HENRY ALONZO BUCK, of 11, Montague Street, Russell Square, London, England, Engineer. A new method of and means for generating steam in steam-engines.

Claims.—(1.) The described method of introducing water at a high temperature under pressure into the preferably heated cylinder of a steam-engine for the purpose of conversion of the water into steam in the cylinder itself. (2.) The combination of an hydraulic ram and feed-pump for the purpose of automatically adjusting the feed and pressure of the water, substantially as described and shown. (3.) In a steam-engine working according to the general method described, the use of a measuring admission-valve for regulating the charge of water introduced into the cylinder. (4.) The form of admission-valve substantially as described, and shown more particularly in Fig. 4. (5.) The general combination and arrangement of parts described, and shown in the drawings.
(Specification, 6s. 6d.; drawings, 18s.)

No. 12451.—10th March, 1900.—EDWIN ORLANDO BLACKWELL, of Wynyard, Tasmania, Miller. Improvements in door-stops.

Claims.—A door-stop composed of a piece of metal bent to form three main members, two of which form a compressible wedge, the third acting as a spring resisting compression of the said wedge, substantially as and for the purposes set forth. (2.) In combination, in a door-stop formed of a piece of metal, members forming a wedge, and having means (as roughening or projections) for gripping the door (or the door and floor), and a spring to resist the compression of the wedge, substantially as and for the purposes set forth. (3.) As an improved article of manufacture, a door-stop constructed to form a compressible wedge, having a spring to resist compression, a front and rear foot, and projections for gripping, all as set forth and as illustrated.
(Specification, 3s.; drawings, 3s.)

No. 12452.—10th March, 1900.—FRANCIS EDWARD ELMORE, of Roundhay, Leeds, York, England, Electro-metallurgist. An improved method of separating metallic from rocky constituents of ores, and apparatus for that purpose.

Claims.—(1.) Process for separating the metallic from the rocky constituents of ore by mixing the pulverised ore, first with water in considerable quantity, then adding to the mixture an oil of the kind described, which adheres to the metallic constituents but not to the wet rocky constituents, allowing the water carrying the rocky material to subside while the oil carrying metallic constituents floats above, and separating the oil from these constituents, substantially as described. (2.) For separating metallic from rocky constituents of ore, apparatus comprising horizontally revolving helically ribbed mixing-drums, subsidence-vessels, a centrifugal drum for separating the oil, a tank provided with agitators, and a second centrifugal machine for separating the water, arranged and operating substantially as described.
(Specification, 4s.; drawings, 5s. 6d.)

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 an estimate of 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, 14th March, 1900.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted as under:—
No. 12377.—12th February, 1900.—CHARLES JOSEPH COOZE, of Carterton, New Zealand, Carriage-trimmer. Improvements in apparatus for generating acetylene and similar gases.
No. 12413.—22nd February, 1900.—JAMES TENNANT, of Oroua Bridge, New Zealand, Flaxmiller. Improved flax-stripper chair.
No. 12430.—1st March, 1900.—FRANCIS JAMES OLSEN, of Invercargill, New Zealand, Photographer. An improved cover for seats of water-closets and the like.
No. 12432.—28th February, 1900.—THOMAS WILLIAM COULTHARD, of Mangapai, New Zealand, Sawmiller. A spring chair for amusing and soothing children.
No. 12434.—3rd March, 1900.—FREDERICK AUSTIN NEVILL, of Percy Street, Portland, Victoria, Tinsmith and Ironworker. Improvements in steam cookers.
No. 12439.—3rd March, 1900.—JOHN WILLIAM STONYER, of Linwood, Christchurch, New Zealand, Machinery Expert. An improved plough.
No. 12440.—27th February, 1900.—ALEXANDER RATTRAY AYSON, of Wyndham, Southland, New Zealand, Farmer. An improved gold-saving attachment adaptable to gold-dredges and gold-saving sluice-boxes, for the purpose of gold-saving.
No. 12441.—1st March, 1900.—JOHN ALEXANDER PRINGLE PHILP, of Stanley Street, Sydenham, Canterbury, New Zealand, Cycle-salesman. A guard to prevent the grease on bicycle-chains from soiling the rider’s trousers, and also for preventing the chain from mounting the cogs of chain-wheel, or being raised by the cranks.
No. 12442.—6th March, 1900.—GEORGE ALLEN, of Masterton, New Zealand, Blacksmith. An invention for branding sheep, cattle, or horses.
No. 12443.—7th March, 1900.—FREDERICK JONES, of 4, Home Street, Wellington, New Zealand, Boot-salesman. Improvements in or relating to tires for bicycles or any description of vehicles.
No. 12444.—7th March, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Strand, London, England, Manufacturers (assignees of Benjamin Garver Lamme, of 230, Stratford Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Method of and installation for operating two-phase electric motors.
No. 12446.—8th March, 1900.—ALBERT HERBERT, of John Street, Perth, Western Australia, Engineer. An improved process of and apparatus for the extraction of gold from finely divided matter.
No. 12447.—6th March, 1900.—ISAAC JONES, Prospector, and EDWARD ALLISON, Electrician, both of No. 1 Silver Queen, Zeehan, Tasmania. An electro-magnetic separator.
No. 12448.—9th March, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Strand, London, England, Manufacturers (assignees of Benjamin Garver Lamme, of 230, Stratford Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in dynamo-electric machines.
No. 12449.—5th March, 1900.—WILLIAM ARTHUR VERRY, of 20, Ure Street, Oamaru, New Zealand, Carpenter. A railway road-lever.
No. 12453.—9th March, 1900.—FRANCIS JAMES OLSEN, of Invercargill, New Zealand, Photographer. Improved water-filtering apparatus.

F. WALDEGRAVE,
Registrar.

NOTE.—Provisional specifications cannot be inspected, or their contents made known by this office in any way, until the complete specifications in connection therewith have been accepted.

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

Letters Patent sealed.

LIST of Letters Patent sealed from the 21st February, 1900, to the 5th March, 1900, inclusive:—
Nil.

F. WALDEGRAVE,
Registrar.

Letters Patent on which Fees have been paid.

[NOTE.—The dates are those of the payments.]

SECOND-TERM FEES.

NO. 8090.—The Oppermann-Fischer Patents Proprietary, Limited, process of amalgamating gold (E. L. and C. T. J. Oppermann and E. Fischer). 27th February, 1900.
No. 8314.—J. Manttan, Venetian blind. 28th February, 1900.