2110
THE NEW ZEALAND GAZETTE.
[No. 93

No. 12129.—30th October, 1899.—CHARLES HAYWARD IZARD, of Wellington, New Zealand, Solicitor (nominee of Joseph Baxeres de Alzugarray, of Lola Villa, Shortlands, Kent, England, Chemist). Improvements relating to the extraction of gold, silver, and other metals from ores and the like.

Claims.—(1.) The process for extracting precious metals from their ores consisting in treating moistened crushed ore with cyanogen in a concentrated state in combination with a gaseous mixture of bromine and oxygen. (2.) The process for extracting precious metals from their ores consisting in moistening the crushed ore to such an extent that it will “ball” in the hand with a concentrated solution of cyanide; placing the moistened ore in a gas-tight vessel; subjecting the same to the action of a gaseous mixture of bromine and oxygen, whereby the precious metals are converted into soluble salts of the same; obtaining the precious metals in solution by washing the ore; and, finally, recovering the metals from the solution by precipitation or electrolysis, in the usual manner, all as described. (3.) The process for extracting precious metals from their ores consisting in moistening the crushed ore with water to such an extent that it will “ball” in the hand; placing the moistened ore in a gas-tight vessel; subjecting the same to the action of a gaseous mixture of bromine, cyanogen, and oxygen, whereby the precious metals are converted into soluble salts of the same; obtaining the precious metals in solution by washing the ore; and, finally, recovering the metals from the solution in any well-known manner, all as described. (4.) In the process for extracting precious metals from their ores, the employment of bromine and cyanogen in a gaseous form as herein set forth. (5.) In the process for extracting precious metals from their ores, the employment of a concentrated solution of cyanide as and for the purpose herein set forth. (6.) In the process for extracting precious metals from their ores, the employment of oxygen in combination with a concentrated cyanide-solution, as set forth. (7.) In the process for extracting precious metals from their ores, the employment of oxygen in combination with bromine, as set forth. (8.) In the process for extracting precious metals from their ores, the employment of a concentrated solution of cyanide in combination with bromine and oxygen in a gaseous form, as set forth. (9.) In the process for extracting precious metals from their ores, the employment of a gaseous mixture of bromine, cyanogen, and oxygen, as set forth.
(Specification, 7s.; drawings, 3s.)

No. 12133.—30th October, 1899.—ALBERT EDWARD HORLICK PAYNE, of 2, Park Road, Upper Baker Street, London, England, Builder’s Manager. Improvements in or relating to ready-reckoners and the like.

Claims.—(1.) In a ready-reckoner or kindred device, the combination of two superposed discs revolvable upon one another about a central connecting pivot, tabulated matter arranged in a circle around the inner face of each disc, and a view-aperture in each disc whereby any portion of the tabulated matter of the other may be sighted and read off from either side of the device on relatively rotating the discs, substantially as set forth. (2.) In a ready-reckoner or kindred device, the combination of a series of superposed discs revolvable about and connected by a central pivot, tabulated matter arranged in a circle about the face or faces of the discs, view-apertures in the discs adapted to coincide so that any portion of the tabulated matter of any disc may be sighted or read off through the coincident view-apertures of the discs above, and peripheral indicating and manipulating tabs or projections on the discs, said tabs lying over one another when the view-apertures coincide, and thereby facilitating the placing and maintaining in coincidence of the view-apertures through which any disc has to be sighted, substantially as set forth. (3.) In a ready-reckoner or kindred device, the combination of the series of superposed discs rotatable about a central pivot, the tables carried by the discs, and a catch on the periphery of each disc engaging the adjacent disc, the sight-apertures of interlocked discs being coincident, substantially as set forth. (4.) In a ready-reckoner or kindred device, the combination of the series of superposed discs rotatable about a central connecting pivot and provided with view-apertures, the tables carried by the discs and the catches on the peripheries of the latter, said catches being adapted to interlock with one another and thus hold any adjacent discs against relative movement, the view-apertures of interlocked discs being coincident, substantially as set forth. (5.) In a ready-reckoner or kindred device, the combination of the table-bearing discs connected by a central pivot, the view-apertures therein, and a catch carried on the periphery of each disc, all of said catches engaging a common disc whereby each disc is independently locked against relative movement, the sight-apertures of the different discs being coincident when the latter are locked by the catches aforesaid, so that when any disc is rotated for reference the necessary coincidence of the view-apertures of the discs above is assured, substantially as set forth.
(Specification, 9s. 6d.; drawings, 11s.)

No. 12137.—3rd November, 1899.—AMEDÉE MATHURIN GABRIEL SÉBILLOT, of 60, Boulevard de Clichy, Paris, France, Engineer. Process for dressing zinc-ores, and apparatus therefor.

Claims.—(1.) A method of manufacturing metallic zinc with blast-furnaces by reducing zinc-ores such as zinc-carbonate, zinc-sulphuret, or mixed ores, the said method consisting of the disoxidation of the zinc-oxide or zinc-flower obtained by the calcined zinc-carbonate, or by treating zinc-sulphuret with oxidized or metallic iron, or also with oxidized copper-ores, and by the addition of carbon in both cases, serving as a reducing agent, the said process being effected in a hermetical double-blast furnace, the complete disoxidation of zinc being obtained by the passage of its vapours over incandescent coals before reaching the condenser, the said condenser being placed into a double-sloped flue maintaining the temperature above the fusion of zinc, to obtain this metal at the tap-hole, substantially as and for the purpose set forth. (2.) The above-mentioned method, and the arrangement of a furnace hermetically closed at the top and formed by a metallic casing A, B, with water-circulation, and supported by a brick-mass foundation, the said casing or jacket being provided with holes to introduce the air from the blast, these holes being arranged at the top and at the bottom of the furnace, and between which holes the gas-hole G is placed, this latter being provided with water-circulation tubes H, H, H, forming a grating, another grating G¹ in firebricks surrounding the space I containing charcoal, which is supplied by the cylinder J, substantially as described and for the purpose set forth. (3.) In the above-mentioned furnace, the combination with two rows of blast-pipes, the upper row of which blowing air which passes through the matters from top to bottom, the lower one forcing the air from bottom to top, and the two currents passing together through the outlet-hole arranged between these two rows of blast-pipes, substantially as and for the purpose set forth. (4.) Finally the application of the above-mentioned process and apparatus to the treatment of all zinc-ores, such as zinc-carbonate, zinc-sulphuret, and mixed ores, and for the separation in general of fixed and volatile metals in blast-furnaces, substantially as described and for the purpose set forth.
(Specification, 6s. 6d.; drawings, 8s.)

No. 12139.—3rd November, 1899.—FRANK COFFEE, of 89, York Street, Sydney, New South Wales, General Merchant. An improved reclining-chair.

Claims.—(1.) In a reclining-chair, the combination with the crossed legs forming the sides of the chair of upright stop-bars connecting the rear portions of each pair of legs, a back pivoted near its lower end to the upper portions of said stop-bars, and a sliding-seat having its rear edge pivotally connected with the lower end of the back, and having its front portion loosely supported upon the upper portion of the rearwardly inclined legs, the rear portion of the seat being arranged to abut against said stop-bars in the normal rearward position of the seat, substantially as set forth. (2.) In a reclining-chair, the combination with the crossed legs forming the sides of the chair, front struts or standards extending upwardly from the upper ends of the rearwardly inclined legs, arm-rests connecting the upper ends of the forwardly inclined legs, upright stop-bars connecting the upper and lower rear members of the crossed legs, a back pivoted near its lower end to the upper end of said stop-bars, and a seat pivoted at its rear edge resting upon the upper front portions of the cross-legs, and arranged to abut against said stop-bars in the rearmost position of the seat, substantially as set forth.
(Specification, 1s. 9d.; drawings, 3s.)

F. WALDEGRAVE,
Registrar.

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