1980
THE NEW ZEALAND GAZETTE.
[No. 50

No. 29438.—29th July, 1910.†—HARVEY CALEB KENNEDY, of 7 Constance Street, in the City of Toronto, York, Ontario, Canada, Broker. Certain new and useful improvements in spring wheels.

Claims.—(1.) In a wheel, the combination of a hub, a felloe, a plurality of hoop springs each connected at its ends to opposite ends of the hub and intermediate its ends to the felloe and each crossing two adjoining springs, and a branch formed at each end of the spring, branching from a point at the hub-side of said crossings and connected to the opposite end of the hub to that to which the spring end is connected.

[NOTE.—Here follow four other claims.]

(Specification, 4s.)

No. 29458.—28th April, 1911.—CHARLES WASHINGTON MERRILL, of Berkeley, Alameda, California, United States of America, Metallurgical Engineer. Process for precipitating and recovering valuable materials from solutions, and, particularly, metals from hydro-metallurgical solutions.

Claims.—(1.) The method of maintaining reducing-conditions throughout the precipitation of metal containing material from a cyanide solution which consists in agitating said solution with a metallic precipitant, conveying the mixture without rest to a filter, and excluding oxidizing gases from the mixture during the filtration. (2.) The process for precipitating and recovering material from its solution which consists in adding a precipitant to said solution while in motion, conducting the mixture without rest to a filter, and maintaining reducing-conditions throughout the separation of the solid from the liquid in said filter. . . . (4.) The process for precipitating and recovering material from its solution which consists in conveying said solution to a pressure-filter, simultaneously forcing a precipitant into said pressure-filter with said solution, and maintaining reducing-conditions throughout the separation of the solid from the liquid in said filter. . . . (9.) The process for precipitating and recovering material from its solution which consists in adding a precipitant to the duct in which said solution is being conveyed, forcing the mixture into the bottom of a pressure-filter, and discharging the filtrate from or near the top of said filter.

[NOTE.—Here follow ninety-eight other claims.]

(Specification, £2 15s.)

No. 29459.—28th April, 1911.—CHARLES WASHINGTON MERRILL, of Berkeley, Alameda, California, United States of America, Metallurgical Engineer. Process for treating a semi-solid material in the containers of filter-presses, and for removing the same therefrom.

Claims.—(1.) The described method of treating in and removing solid or semi-solid material from the containers of pressure-filters, consisting in depositing a sufficient amount of said material in layers of sufficient thickness upon the filter-cloths which form the closure of the containers so that a space is left between the layers, then subjecting the layers to the pressure of a liquid, vapour, or gas acting from behind the filter-cloths whereby the same are caused to fall to the bottom of the container, and then forcing said material out of the containers by the impingement of a stream of liquid, vapour, or gas under pressure (acting from below) upwardly upon the contents of said containers.

[NOTE.—Here follow twenty-four other claims.]

(Specification, £1 3s.)

No. 29478.—2nd May, 1911.—EDWARD EDMUND CLEMENT, a citizen of the United States of America, of 908 G Street, North-west, Washington, Columbia, United States of America, Attorney-at-Law. Improvements in and relating to telephone-exchange systems.

Extract from Specification.—This invention relates to telephone-exchange systems, and particularly to semi-automatic systems. Its general object is the improvement of such systems in divers particulars. Among particular objects may be specified the following: To carry out a system of aggregation of units, both in apparatus and circuits, from the smallest part to a complete system, so that all corresponding parts are interchangeable; to use a standard two-motion selector-switch for testing selection, whereby a large number of circuits may be tested in a relatively small number of motions; to provide for simultaneous testing travel of primary and secondary selector-switches, whereby the operator’s answering-time is reduced; to provide a simple and efficient test-circuit for selector-switches, together with ancillary control of actuating and release magnets as the links are built up; to provide for a forward-release impulse controlled by the calling subscriber until the called subscriber answers; to lock the calling subscriber against release until after the operator answers; to provide for “killing” operators’ positions automatically when vacated, and the rotation of calls among the remaining active positions; to signal the operator during transmission of switch-controlling impulses; to improve primary and secondary distribution of calls; to simplify the connector-circuit by using the ringing selector as a side switch; to improve the release and other features of the selector and connector circuits and generally simplify the same.

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

(Specification, £3 7s. 6d.)

No. 29491.—1st May, 1911.—JOHN DUNLAP SCOTT, residing at No. 304 Second Avenue, New York, United States of America, Manufacturer. Process of and apparatus for treating hydrocarbonaceous substances.

Claims.—(1.) The process for recovering from cannel coal and similarly constituted bituminous compounds their hydrocarbon ingredients of the paraffin series in chemically unchanged condition, the process consisting of the following steps: Subjecting the material from which the hydrocarbon ingredients are to be recovered in an atmosphere or neutral (deoxidized) gases to a temperature sufficient only to render the hydrocarbon ingredients of the material fluid, then subjecting the material treated to the action of a current of heated neutral gases, the current being directed to contact with it, drawing out, while continuing the current of neutral gases, the fluid ingredients of the material with the neutral gases and separating them from the neutral gases, all substantially as set forth. . . . (48.) In an apparatus for treating coals and other hydrocarbonaceous substances, spaced and perforated or open mesh trays for holding the substance to be treated enclosed in a chamber which is in communication on the one hand with a heat-flue and on the other hand with an exhaust-pipe, and means for inducing currents of heat to pass through the trays and drawing such currents of heat and the vapours extracted from the substance into the exhaust-pipe, substantially as described.

[NOTE.—Here follow sixty-one other claims.]

(Specification, £2 15s.)

No. 29499.—4th May, 1911.—JAMES GITSHAM, of No. 57 Wilson Street, Moonee Ponds, Victoria, Australia, Metallurgist. Improved process for the recovery of gold and silver from antimonial, arsenical, and other gold-bearing ores.

Claims.—(1.) In a process for treating ore of the class specified, bringing the ore under treatment in the presence of hydrocyanic acid in the manner and for the purpose set forth. . . . (4.) The improved process for treating gold-and silver-bearing ores of the class specified consisting in water-washing the ores, then treating it with a cyanide solution to combine with acid naturally in or added to the ore to form hydrocyanic acid (which dissolves the gold and silver), and then drawing off the solution to an alkaline sump where a portion of the cyanide is regenerated, as and for the purpose set forth.

[NOTE.—Here follows one other claim.]

(Specification, 4s. 6d.)

No. 29500.—4th May, 1911.—JOHN BURDON, WILLIAM MURRAY BURDON, and MATTHEW MURRAY BURDON, all Engineers, and all of Caldervale Works, Bellshill, Lanarkshire, Scotland. An improved apparatus for producing oil-gas.

Extract from Specification.—In our self-contained oil-gas producer, oil-gas is burnt in one chamber (which we may term the flame-chamber), and the hot gases of combustion are utilized to heat another chamber or chambers (which we may term the retort chamber or chambers), having therein one or more retorts through which atomized oil, in admixture with air (and) or steam, is passed and is gasefied, the gas being thereafter directed into and burnt in the furnace or furnaces to be heated or fired. In some cases the heat of a flame-chamber is utilized to heat a gas-generating chamber to which atomized oil, in admixture with air, is supplied, the gas produced being conducted to the flame-chamber and thence to the furnace to be heated or fired. In other cases a flame-chamber may be heated by means of an oil flame or flames, a blow-lamp, coal or other fire, and have the retorts arranged therein, atomized oil, in admixture with air, being supplied to the retorts and gasefied and then utilized for heating or firing or for other purpose.

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

(Specification, 9s.)