SEPT. 19.] THE NEW ZEALAND GAZETTE. 1877

No. 13969.—4th September, 1901.—LAURENCE WILLIAMSON, of Levin, New Zealand, Builder. Improved chicken-brooder.

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Claims.—(1.) A chicken-brooder consisting of the parts arranged, combined, and operating substantially as and for the purposes described, and illustrated in the drawing. (2.) In a chicken-brooder, a casing divided by a horizontal partition into two chambers, the lower chamber being adapted to receive a lamp, an air-drum within a metal dome providing an annular space above said lamp, tubes connecting the annular space with the outside of the casing, and a perforated cylinder surrounding the drum, substantially as described and illustrated.
(Specification, 1s. 9d.; drawings, 1s.)

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No. 13973.—5th September, 1901.—EDWIN RUTHVEN CAHOONE, of Newark, New Jersey, United States of America, Gentleman. Improvements in stoves.

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Extract from Specification.—My invention relates to improvements in stoves designed especially for burning soft or bituminous coal. The invention has for its object—(1) To provide means for introducing jets of highly heated air into the fuel-chamber; (2) to provide means for uniformly jetting heated air into the fire-pot at different inclinations; (3) to provide in a stove structure air-heating chambers wherein the air is heated and directed to a superheater, from whence it is delivered to the fuel; (4) to provide means for equalising the heated air delivered to the bed of fuel from a series of pipes or tubes; (5) as a whole, the object of this invention is to provide a stove structure which will assist toward producing more uniform and perfect combustion, this result being brought about by the arrangement of the series of jet-tubes, the means for introducing superheated air to said tubes, and the particular construction of the air-duct.
(Specification, £2; drawings, 3s.)

[NOTE.—The number and length of the claims in this case preclude them from being printed, and the foregoing extract from the descriptive part of the specification is inserted instead.]

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No. 13976.—3rd September, 1901.—FRANCIS WILLIAM PAYNE, of Dunedin, New Zealand, Consulting Engineer. Improved differential brake-gear.

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Claims.—(1.) In brakes actuated by screw motion, the combination with the brake of differential screws for the purpose of obtaining more power than by the usual screws now in use, substantially as set forth, and as shown on the drawing. (2.) In screw-motion brakes, the blocks or straps B, B, A, A combined with a coarser thread, and nut E and F working with a finer thread and nut E¹ and F¹ or E³ and F³, said threads being same-handed for the purpose of giving out extra power, all substantially as shown and described.
(Specification, 2s.; drawings, 1s.)

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No. 13984.—10th September, 1901.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of James Jones Meldrum, Managing Director of Meldrum Brothers, Limited, of the Atlantic Works, City Road, Manchester, Lancaster, England). Improvements in refuse-destroyer furnaces.

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Claims.—(1.) A destructor-furnace cell comprising a flat grate over a closed ashpit supplied with forced draft, a flat or sloping hearth between the grate and the front wall of the cell, a closable feed-opening through the front wall, a closable clinkering-opening through the side wall, a hollow perforated fire-bridge, a channel through which air is supplied to the fire-bridge, a crematory chamber at the back of the fire-bridge, a perforated back wall, and a reverberatory arch extending from the front wall to the back wall, constructed substantially as described. (2.) A destructor furnace comprising two separate cells, each of which is constructed substantially as set forth in the preceding claim, built parallel with each other, and having in their dividing wall an air-passage communicating with the hollow fire-bridge and a source of air-supply, and having also their crematory chambers in open communication one with the other, substantially as set forth.
(Specification, 4s. 6d.; drawings, 1s.)

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No. 13985.—10th September, 1901.—WILLIAM JAMES TRANTER, of 3, Neptune Street, Tipton, Stafford, England, Engineer. Improvements in brush-handle holders.

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Claim.—In a brush-handle holder, the combination with the socket j, having binding-screw k, of the clip c, d, having claws with means for holding same to stock a, substantially as set forth, and shown in the drawings.
(Specification, 1s. 3d.; drawings, 2s.)

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No. 13986.—10th September, 1901.—ARCHIBALD DRUMMOND CARMICHAEL, of the Royal Hotel, Argent Street, Broken Hill, New South Wales, and LESLIE BRADFORD, of Williams Street, Broken Hill aforesaid, Metallurgists. Improvements in the desulphurising of sulphide ores preparatory to smelting.

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Claims.—(1.) In the desulphurising of sulphide ores preparatory to smelting, the admixture with the ores of calcium-sulphate or gypsum, subsequently subjecting the mixture to a heating operation in a converter through which a current of air is maintained, substantially as described, and for the purpose indicated. (2.) In the desulphurising of sulphide ores preparatory to smelting, the admixture with the ores of calcium-sulphide, subsequently subjecting the mixture to a heating operation in a converter through which a current of air is maintained, substantially as described, and for the purpose indicated. (3.) In the desulphurising of sulphide ores preparatory to smelting, the admixture with the ores of a proportion of calcium-sulphate, gypsum, or calcium-sulphide, subsequently subjecting the mixture in a converter to a dull-red heat, and maintaining an induced current of air, which oxidises the produced calcium-sulphide, substantially as described. (4.) The described process for desulphurising sulphide ores preparatory to smelting, consisting in admixing with the ores a proportion of calcium-sulphate, gypsum, or calcium-sulphide, subsequently subjecting the admixture in a converter to a dull-red heat, whereby the sulphide ore is sulphated and the calcium-sulphate converted into sulphide, the maintaining of an induced current of air which regenerates the sulphate of calcium, and, this reaction being exothermic, sufficient heat is evolved to complete the concurrent desulphurising reactions between the metallic sulphides and the produced metallic sulphates and oxides, substantially as described.
(Specification, 5s. 3d.)

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No. 13990.—7th September, 1901.—ROBERT COCKERELL, of Dunedin, New Zealand, Blacksmith. An improved rope-climber and fire-escape.

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Claims.—(1.) In appliances for climbing up or down or along a rope or bar, the combination of such, A, A¹, with a tube and lever C¹, C, C⁵, for nipping the rope by the heel of the lever when the weight is on C, and allowing the appliance to slide on the rope when C is lifted, all substantially as described and explained, and as illustrated in the drawing. (2.) In fire-escapes, the combination of a fixed rope or a loosely hanging rope, A or A¹, with hand- or foot-lever rests C, C¹, C⁵, with a spring when needed to the lowest rest C⁷ to insure that the appliances do not slip in throwing out the rope or in unskilful using of the whole, all substantially as described, and as shown on the drawing. (3.) In ropes swung or attached from one point to another in more or less a horizontal position, the combination with such rope of a single or double appliance C¹, C³, and a cage D attached as shown, all substantially as set forth.
(Specification, 2s. 3d.; drawings, 1s.)

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No. 13991.—9th September, 1901.—GEORGE JOHN HOSKINS, of Ultimo, Sydney, New South Wales, Engineer. Improved apparatus for making cores for cylindrical castings.

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Claim.—In apparatus for making cores for cylindrical castings, in combination, a truck or traveller running on rails, the said truck carrying the cylindrical core-barrel, a fixed hopper placed near the core-barrel as described, a fixed revolving wire cylinder mounted on an oblique axis, means for insuring the pressure of the wire cylinder against the core-barrel, a trough below the wire cylinder, and means for rotating the core-barrel and for causing the forward travel of the truck, all as specified.
(Specification, 2s. 6d.; drawings, 1s.)

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No. 13992.—12th September, 1901.—Dr. HERMANN PASSOW, of 11, Posthof, Hamburg, Germany, Manager. Improvements in the manufacture of cement.

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Claims.—(1.) Process for producing cement by melting the raw materials together, rapidly cooling the molten product, grinding the same and mixing it with a small quantity of lime, substantially as described, and for the purpose set forth. (2.) Process for producing cement by mixing rapidly cooled ground furnace-slag with a small quantity of lime, substantially as described, and for the purpose set forth.
(Specification, 5s.)