Oct. 6.] THE NEW ZEALAND GAZETTE. 3653

No. 27453.—22nd March, 1910.—PERCY CLAUDE CAMERON ISHERWOOD, Ph.D., Chemist, of Haxelwood, Forest Glade, Leytonstone, England. Improvements in and relating to filtering-apparatus.*

Extract from Specification.—The vessel in which the extraction is effected, and which is provided with a filter-plate at one end, is turned into such position that the filter-plate will be lowermost, so that thus the coarser mass or particles of the charge come to lie upon the filter-plate and the finer particles upon the coarser, so that thus the filter-plate does not become choked by the deposit upon it of the finer particles of the charge and the filter, while the liquor is completely and quickly filtered, and without the possibility of premature crystallization of the dissolved compounds.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 3s. 9d.)

No. 27532.—9th April, 1910.—JOHN MCFADDEN and HENRY ADAMS, both of Edendale, New Zealand, Farmers. Improvements in milking-appliances.*

Claims.—(1.) In a milking-appliance employing milk-catheters, the combination with a catheter of spring clips pivotally secured thereto, substantially as and for the purposes set forth. (2.) In a milking-appliance employing milk-catheters, a connecting-bulb provided with tubular projections, substantially as and for the purposes set forth.

(Specification, 3s.)

No. 27814.—1st June, 1910.—FREDERICK W. YOST, of 135 Adams Street, Chicago, County of Cook, Illinois, United States of America. The process of calcining, roasting, or clinkering materials.

Claims.—(1.) The process of treating finely divided material containing heat-developing components which comprises initiating a reaction at one surface of a mass of material having definite bounding-surfaces and capable of undergoing a propagative reaction, introducing a reaction-supporting gas at another surface of the mass, conducting the reaction-supporting gas through the interior of the mass, and controlling conditions so as to cause an internal propagation of the reaction throughout the body of such mass, substantially as described. (2.) The process of treating finely divided material containing heat-developing components which comprises initiating a reaction at one surface of a mass of material having definite bounding-surfaces and capable of undergoing a propagative reaction, introducing a reaction-supporting gas at another surface of the mass, conducting the reaction-supporting gas through the interior of the mass, controlling conditions so as to cause an internal propagation of the reaction throughout the body of such mass, and withdrawing the volatile products of reaction at the surface of initial reaction, substantially as described.

[NOTE.—Here follow 111 other claims.]

(Specification, £3·10s.)

No. 27820.—1st June, 1910.—WILLIAM MORLEY MARTIN, of Fore Street, Redruth, Cornwall, England, Analytical Chemist. Improvements in treating complex ores or their concentrates.

Claim.—(1.) A process of rendering complex ores more amenable to concentration and to separation of their mineral constituents according to Specification No. 27210, characterized by the fact that the subdivided ore or a concentrate thereof is mixed with a solution of an oxidizing-agent and exposed to a temperature between ordinary temperature and 150° C., or is heated with a solid oxidizing-agent at a temperature of about a dull-red heat and is subsequently concentrated.

[NOTE.—Here follow two other claims.]

(Specification, 4s. 9d.)

No. 28065.—9th July, 1910.—OLIVER ATKINSON FINLAY, of 60 Queen Street, Auckland, New Zealand, Ironmonger. Improved toaster.*

Extract from Specification.—The improved toaster consists of two parts. The lower part is a plate of thin sheet iron, square, oblong, or round in shape, with wire handle attached. The upper part is a piece of expanded-metal gauze, slightly corrugated, fitting in the lower part, the edges of the plate overlapping the edges of the upper part (or gauze), thus securing the two pieces.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 2s. 6d.)

No. 28189.—30th July, 1910.—HENRY SYMES, of Mornington, New Zealand, Tramway Manager. Improvements in brakes for following-cars.

Extract from Specification.—I place in a convenient position in the space allotted to the driver a brake-wheel, and connect its spindle to a long, square, bell-mouthed ferrule, allowing side play to this by such as a ball-and-socket joint, and on the following car I connect the usual brake system to a screw which is similarly connected to a long and slightly pointed square pin which loosely fits the ferrule and is turned by it, while allowing side, vertical, and longitudinal play, such as occurs between two cars on a line. I also furnish the trailing-car with a pawl that is made to engage a ratchet-wheel secured to the shafts. This pawl is normally kept just clear of the teeth of the ratchet-wheel by a cord which is to be hooked to the car of the driver, to another cord under his control.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 4s.)

No. 28197.—3rd August, 1910.—ARCHIBALD CLARK ANDERSON, of Stirling Point, Bluff, New Zealand, Farmer. Ear-branding live-stock.

Claims.—(1.) An ear-brand device for the purpose described, comprising a series of metal figures heated by oil fuel provided with a heater mounted on a pair of tweezers, substantially as described. (2.) An ear-brand device for the purpose described, comprising a series of connecting figures heated by oil fuel provided with a heater mounted on a pair of tweezers, means for the purpose of placing on and withdrawing heater from off the figures automatically, substantially as described.

(Specification, 2s.)

No. 28260.—15th August, 1910.—ANTON HENDRICK HANSEN, of Mania, New Zealand, Meat-preserver. An improved forced draught for steam boilers.

Extract from Specification.—A plurality of nozzles located in the ash-pit below the firebars. Steam is admitted to the nozzles through a pipe connected to the dome or upper part of the boiler, and of comparatively large diameter. Pipes of decreasing diameter are connected to the first length of pipe, until the pipe immediately connected to the nozzles, or the branches thereof, is of proper diameter. Each nozzle consists of a branch extending from the steam-pipe and closed at its end by a cap having a minute hole. The steam from this hole passes into a sheet-metal cone or cap having an elongated opening which spreads the steam evenly below the firebars. Benzine is admitted to the steam-pipe behind the branches thereof by a pipe provided with a non-return valve.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 3s. 9d.)

No. 28261.—15th August, 1910.—WALTER SOUTHWELL, of Willow Park Road, Hastings, New Zealand, Commercial Traveller, and DONALD McLELLAN, of Chaucer Road North, Napier, New Zealand, Salesman. An improved spraying-apparatus.

Extract from Specification.—An air-pump which delivers compressed air to a tank provided with a pressure-gauge and a safety-valve. A pipe provided with a stop-cock connects the tank to a distributing-vessel also provided with a pressure-gauge and a safety-valve. A pipe extending to the bottom of the tank is provided with a two-way cock and branch pipes. A charging-cylinder has pipes fitted with stop-cocks and communicating with the distributing-vessel. A mouthpiece at the top of the charging-cylinder is provided with a stop-cock.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 3s. 3d.)

No. 28265.—16th August, 1910.—FRANK WYATT PRENTICE, of 56 Melbourne Avenue, Toronto, Canada, Inventor. Improvements in electric train-control system.

Claim.—(1.) In the train system of a railway-control system using Hertzian waves, and in which an electric motor device is