1438
THE NEW ZEALAND GAZETTE.
[No. 66

No. 11777.—5th July, 1899.—FRANCIS WILLIAM PAYNE, of 31, Moray Place, Dunedin, New Zealand, Consulting Engineer. Improved elevator-trays for dredges.

Claims.—(1.) In elevator-trays for the delivery of tailings, the special double construction of the tray so that the forward portion such as B² discharges before the after portion such as B¹, combined with the overlapping of buckets on every alternate set of links only, substantially as set forth, and as shown on the drawing. (2.) In elevator-trays for the delivery of tailings, the placing of the trays on every alternate set of links only, but so forming them that they still form a continuous line when the buckets and links are in a straight line, so as not to lose any of the stream of tailings, substantially as described and explained, and for the purposes specified.
(Specifications, 1s. 9d.; drawings, 3s.)

No. 11798.—17th July, 1899.—JOHN WYNN MANCHEE, of Sydney, New South Wales, Grazier. Improvements in wire-fence droppers.

Claims.—(1.) A dropper, consisting of a V-section or angle-bar, through the angle of which are cut hooked-end slots with non-coincident ends adapted to nip the wires, substantially as described. (2.) A V-section or angle-bar dropper adapted to be fastened on fence-wires by the engagement of said wires in hooked-end slots with non-coincident ends, cut through the angle of said dropper, substantially as described. (3.) In a dropper of the kind described, slot-ends formed alternately high and low, substantially as described.
(Specification, 1s. 3d.; drawings, 6s.)

No. 11800.—17th July, 1899.—HENRY LYON, of 38, Whitevale Street, Glasgow, Scotland, Electrical Engineer, and JOHN BURREL TALBOT-CROSBIE, Scotstoun House, Renfrew, Scotland, Engineer. Improvements in refrigerating apparatus.

Claims.—(1.) In apparatus for refrigerating by the evaporation, condensation, expansion, and absorption of ammonia, the combination of parts comprising a generator or vessel for heating and evaporating a strong solution of ammonia, a condenser connected by a pipe to the generator, expansion-tubing connected to the condenser and immersed in brine or the like, an absorber placed at a higher level than the generator, and connected to the expansion-tubing, an intermediate vessel connected to the absorber to receive the solution of ammonia therefrom, a pipe connecting the absorber and generator for transferring the weak solution from the latter to the former, a pipe connecting the intermediate vessel with the generator, stop-valves on the various connecting-pipes, means for heating the generator, and means for cooling the absorber, all arranged and operating substantially as described. (2.) In apparatus for refrigerating by the evaporation, condensation, expansion, and absorption of ammonia, the application of an electric heater substantially such as is described.
(Specification, 4s.; drawings, £1 1s.)

No. 11802.—17th July, 1899.—OXYLIQUIT GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG, of Nobelshof, Hamburg, Germany, Manufacturers (assignees of Dr. Carl von Linde, of 76, Nymphenburgerstrasse, Munich, Bavaria, Germany, Professor). A new explosive compound.

Claims.—(1.) A new explosive compound consisting of liquid oxygen, or of liquid air from which the larger proportion of the nitrogen has been evaporated, mixed with an oxidizable substance, substantially as described. (2.) A new explosive compound, consisting of liquid oxygen mixed with an oxidizable substance which is distributed in a finely divided condition upon a material affording a large amount of surface for contact with the oxygen, substantially as described. (3.) The method of using an explosive compound such as is referred to in claims 1 and 2, consisting in placing the oxidizable substance, preferably in a finely divided condition or contained in the pores of some absorbent material, in a case made of a substance which is a bad conductor of heat, and into which is poured the liquid oxygen, or liquid air enriched in oxygen, the case being then introduced into the blast-hole, substantially as described.
(Specification, 3s. 9d.)

No. 11803.—14th July, 1899.—ROBERT COCKERELL, of 31, Moray Place, Dunedin, New Zealand, Blacksmith. Improved intermediate gear, or reverse-action rocking levers.

Claim.—In a system of reverse-action rocking levers for working reciprocating-motion machines, the combination of crank-levers such as D, D, with swivel-heads such as E, E, for giving alternate motion to such machines when driven by power, substantially as described, and as illustrated in the drawing.
(Specification, 1s. 6d.; drawings, 3s.)

No. 11805.—12th July, 1899.—FRED. ISITT, of Sydney, New South Wales, Agent. An improved manufacture of mantles to be used in incandescent gas-lighting.

Claims.—(1.) A base or “carrier” for incandescent mantles consisting of glucinum aluminate in combination with an infinitesimal proportion of a metal of the platinum group, as set forth. (2.) A base or “carrier” for incandescent mantles composed of glucinum aluminate or other stable earth or earths of high melting-point, in a large proportion, mixed with a much smaller proportion of an oxide or oxides of the incandescent earth, all in combination with an infinitesimal proportion of a metal of the platinum group, as and for the purposes specified. (3.) “Developers” that are applied to the “carriers” in incandescent mantles, such “developers” being composed of a mixture of oxides, in which the oxides of indium or gallium are mixed with the oxides or metals of the incandescing earths, approximately in the proportions specified, in combination with a trace of a metal of the platinum group, which causes a catalytic action to be set up, as set forth. (4.) A mantle for incandescent gas-lighting consisting of glucinum aluminate with or without calcium and magnesium oxide or other “carriers” in which the oxides of gallium or indium are contained, singly or in combination with other oxygen “carriers” or “developers,” and with a metal of the platinum group distributed in minute and invisible proportions over the surface of the oxides, whereby a catalytic action is set up, as specified. (5.) A mantle for incandescent lighting consisting of a body of incandescing earth or earths, metal or metals of relatively low light-giving capacity, combined with such minerals as indium, gallium, vanadium, as semi-developers, and a metal of the platinum group in exceedingly minute proportions, whereby a catalytic action is secured, as specified and for the purposes set forth. (6.) In combination, an incandescent earth or earths, metal or metals, of relatively low light-giving capacity in itself or themselves, and high melting-point, approximately in the proportions specified, as a base, and a metal or metals of the platinum group in infinitesimal proportion distributed over the base as a “developer,” thereby causing a true catalytic action, as specified, and for the purposes set forth.
(Specification, 10s.)

No. 11808.—15th July, 1899.—DONALD WILLIAM BODLE, of Alfriston, Manurewa, Auckland, New Zealand, Farmer. A roller-guide for belting of all kinds used with machinery.

Claim.—The combination within a frame of four rollers journaled thereto and rotating within the same for the purpose set forth, as described, and as illustrated by the drawing.
(Specification, 2s. 3d.; drawings, 3s.)

No. 11811.—20th July, 1899.—JAMES WILLIAM CLAUDE HAMILTON, of Liverpool, Lancaster, England, Manufacturer, and JOSEPH AMOS LINLEY, of Sydney, New South Wales, Managing Director of Bergl, Australia, Limited. Improvements in the process of rendering albuminoids of meat permanently soluble.

Claims.—(1.) The process of preserving the fibrine of meat in a soluble form which consists in digesting it in a slightly alkaline solution, a little below boiling-point, until it is in large part dissolved, then adding trioxymethylene or formic aldehyde, and digesting it from 240° to 250° Fahr. until the dissolved portion becomes permanently soluble, filtering out the residue, and evaporating to dryness. (2.) The improvement in preserving albuminoids which consists in adding to their solution trioxymethylene or formic aldehyde, and maintaining at 240° Fahr. until the albuminoids become permanently soluble.
(Specification, 1s. 9d.)

No. 11812.—20th July, 1899.—THE WIRELESS TELEGRAPH AND SIGNAL COMPANY, LIMITED, of 28, Mark Lane, London, England, Electricians (assignees of Guglielmo Marconi, of 28, Mark Lane, aforesaid, Electrician). Improvements in apparatus employed in wireless telegraphy.

Claims.—(1.) Employing induction-coils in which the secondary consists of several layers, the number of turns in