Nov. 22.] THE NEW ZEALAND GAZETTE. 2141

No. 13160.—15th November, 1900.—HUGH FITZALIS KIRKPATRICK-PICARD, of 60, Gracechurch Street, London, England, Metallurgist. Improvements in or relating to the treatment of complex sulphide ores.

Claims.—(1.) A process for the treatment of complex sulphide ores, comprising the roasting of the ore into the form of oxides, and the subsequent reduction of the oxides with carbonaceous material, whereby the zinc is distilled off and the lead reduced to the metallic form, substantially in the manner described. (2.) A process for the treatment of complex sulphide ores, comprising roasting the ore into the form of oxides, mixing the roasted product with carbonaceous material suitable to coke into coherent masses, and treating the mixture in a distilling-furnace, substantially as described. (3.) A process for the treatment of complex sulphide ores, comprising roasting the ore into the form of oxides, mixing the roasted product with carbonaceous material suitable for coking, and forming it into briquettes, and treating the briquettes in a distilling-furnace, substantially as described.
(Specification, 4s. 6d.)

No. 13161.—15th November, 1900.—CHARLES EDWARD MANTON, Assayer, and JOHN WILLIAM RAYFIELD, Mining Engineer, both of Menzies, Western Australia. Process of direct smelting and purifying, principally for gold-precipitates or base bullion.

Claims.—(1.) In a purification process as set forth, the employment of jets of air, steam, or other like gas or vapour, producing, yielding, or containing oxygen, which jets are introduced into the molten mass of metal which is being treated, substantially as and for the purposes described and explained. (2.) In a purification process as set forth, the employment of a slag capable of absorbing the oxidized base metals upon their release from the molten mass, substantially as and for the purposes described and explained. (3.) In a purification process as set forth, the use of jets of air or other oxygen-producing vapour introduced into a molten mass of metal in combination with a slag or flux capable of absorbing the oxidized base metals upon their release from the said molten mass, substantially as and for the purposes described and explained.
(Specification, 3s. 6d.)

No. 13162.—15th November, 1900.—JAMES AITKEN, of the Breakwater, near Geelong, Victoria, Engineer. An improved rotary pump for air, water, or other fluids.

Claims.—(1.) A rotary pump for air, water, or other fluids, consisting of parts constructed, arranged, and operating substantially as specified. (2.) In a rotary pump for air, water, or other fluids, a cylinder fitted with a screw in combination with a series of travelling stops or fingers engaging with the threads of said screw, and travelling longitudinally within said cylinder, substantially as and for the purposes specified. (3.) In a rotary pump for air, water, or other fluids, a cylinder having an internal annular recess at its discharge end in combination with a screw having threads of gradually decreasing depth towards the discharge end, travelling stops or fingers being arranged to engage the threads of said screws, substantially as and for the purposes specified. (4.) In a rotary pump for air, water, or other fluids, a double cylinder, or two cylinders communicating laterally with each other, each fitted with a screw connected together by spur or other gearing in combination with a series or chain of travelling fingers or stops engaging with the threads of said screws, substantially as and for the purposes specified.
(Specification, 5s. ; drawings, 1s. 6d.)

No. 13165.—15th November, 1900.—ANDERS CHRISTIAN ANDERSEN and LAURITS SOPHUS ANDERSEN, both of 1, St. Jorgens Forstad, Odense, Funen, Denmark, Saddlers. A method of automatically producing a constant air-pressure in pneumatic tires with appertinent apparatus.

Claims.—(1.) A method of automatically producing a constant pressure in pneumatic tires, characterized thereby that the air, which in known manner is pumped in by means of a pump driven by the cycle-wheel, is forced partly into the pneumatic tire and partly into a tube or the like having a piston actuated by a spring, which piston in its turn actuates a locking-mechanism for the piston of the pump in such a manner that when the air has attained a certain pressure it causes the said locking-mechanism to either lock or release the piston of the air-pump, whereby is obtained an automatical adjustment of the pressure of the air in the tire. (2.) An apparatus for carrying out the method described in claim 1 characterized by an air-pump of any kind driven by the cycle-wheel, the said air-pump being connected with a tube q connected with the pneumatic tire, and having a movable piston r actuated by a spring s, while the piston r through a suitable mechanism actuates the piston of the air-pump, whereby it is obtained that the pumping is automatically stopped or started when a suitable pressure is produced in the tire d. (3.) A form of construction for the arrangement described in claim 2, characterized by a piston r in a tube q, which by another tube p is in connection with the pneumatic tire d, the said piston r being actuated by a spring s, in combination with a turnable lever, v, w, whose one arm v has a hook y that may catch into a hole z upon the piston-rod g, while the other arm w is actuated by a spring 5, whose plane is at right angle with the arm w when this one is exactly between its two extreme positions, while the piston-rod u, when the spring s is compressed, may press against the arm v, and thereby bring the hook y to gear into the hole z, the piston-rod u being provided with a spring-trigger 8, whose hook 9 is opposite a lug 10 upon the arm v when the hook y is catching into the hole z. (4.) By the piston-rod u, described in claims 2 and 3, the arrangement that this is made of two parts of which the one 12 may be adjusted and fixed in any position as regards the other, so that the pressure in the pneumatic tire at which the pumping has to be stopped and commenced may be varied.
(Specification, 5s. 6d. ; drawings, 2s.)

No. 13168.—16th November, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of John Purington Mallett, of 6, Limen Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in strap coils for electrical machines.

Claims.—(1.) The method of forming a coil for electrical machines which consists in bending bare copper strap into a plurality of turns of the same form and without joints, and then separately insulating said turns, substantially as described. (2.) For electrical machines, coils constructed substantially as described, and shown in the accompanying drawings.
(Specification, 2s. ; drawings, 1s.)

No. 13173.—15th November, 1900.—JOB OSBORNE, of Doyleston, New Zealand, Farmer. An improvement in apparatus for sinking artesian wells.

Claim.—In apparatus for sinking artesian wells, consisting of a frame carrying a fly-wheel shaft, with pinion for actuating a spur-wheel on a shaft carrying a pair of discs with pawls for actuating a pair of levers fitted on spur-wheel shaft, also a winding-drum and rope for operating sand-pump; the use of an additional drum A, with rope c, to which is attached a suitable chisel or drill, said drum and rope being arranged and operated substantially as and for the purpose described, and illustrated in the drawings.
(Specification, 2s. ; drawings, 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, 21st November, 1900.

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

No. 13091.—29th October, 1900.—JOSEPH SPEIGHT, of Kirwee, Canterbury, New Zealand, Engineer. A still-water motor.