Numb. 70.

1541

SUPPLEMENT

TO THE

NEW ZEALAND GAZETTE

OF

THURSDAY, AUGUST 17, 1899.

Published by Authority.

WELLINGTON, THURSDAY, AUGUST 17, 1899.

Patent Agent registered.

Patent Office,
Wellington, 16th August, 1899.

IT is hereby notified that

JOSEPH HAROLD MOORE

of Wellington, New Zealand, barrister and solicitor, has been registered as a Patent Agent.

F. WALDEGRAVE,
Registrar.

Notice of Acceptance of Complete Specifications.

Patent Office,
Wellington, 16th August, 1899.

COMPLETE specifications relating to the under-mentioned applications for Letters Patent have been accepted, and are open to public inspection at this office. Any person may, at any time within two months from the date of this Gazette, give me notice in writing of opposition to the grant of any such patent. Such notice must set forth the particular grounds of objection, and be in duplicate. A fee of 10s. is payable thereon.

No. 10870.—15th August, 1898.—ALFRED SMITH, of Sandhills, Upper Shotover, Lake County, New Zealand, Gold-miner. An improved method of and apparatus for recovering gold from the beds of streams and similar places.*

[NOTE.—The title in this case has been altered. See list Provisional Specifications, Gazette No. 63, of the 18th August, 1898.]

Claims.—(1.) The improved method of recovering gold from the beds of streams consisting in damming the water by sinking sheets of iron or steel placed upon the surface of the ground or bed of the watercourse, and preventing leakage below the plates by sinking the same below the bed of the stream by washing away the gravel by means of a jet of water, substantially as set forth. (2.) The improved means for recovering gold from the bed of a watercourse comprising in combination piles driven into the ground or bed of the watercourse, sheets of iron or steel supported by the piles, strips fixed to one end of each sheet and forming a groove into which the end of the next sheet is passed and secured, and a jet of water, substantially as set forth. (3.) The improved method of recovering gold from beds of streams substantially as set forth and described. (4.) The improved means for recovering gold from beds of streams consisting of parts constructed, arranged, and combined substantially as set forth and described.

(Specification, 2s. ; drawings, 3s.)

No. 11517.—5th April, 1899.—THOMAS CHRISTOPHER DONNELLY, of 31, Moray Place, Dunedin, New Zealand, Mine-manager. Improvements in sifting-screens.

Claims.—(1.) A screen for sifting auriferous gravel and the like, comprising, in combination, perforated cylinders arranged concentrically one within the other, and with their axes inclined, the perforations of the inner cylinders being larger than the outer, wheels or friction-rollers for carrying and spur-gearing for revolving the said cylinders, substantially as set forth. (2.) A screen for sifting auriferous gravel and the like, comprising, in combination, perforated cylinders arranged eccentrically one within the other, and with their axes inclined, the perforations of the inner cylinder being larger than the outer, wheels or friction-rollers for carrying the cylinders independently of one another, said wheels or friction-rollers being revolved to operate the cylinders, substantially as set forth.

(Specification, 1s. 9d. ; drawings, 5s. 6d.)

No. 11528.—14th April, 1899.—THE IMPERIAL S.C. ACETYLENE GAS COMPANY, LIMITED, of 33, King Street, Manchester, England, Gas and Generator Manufacturers (assignees of Evan Evans, of 45, Denbigh Street, Llanrwst, Denbigh, Wales, Ironmonger). An improved system of storage, generation, purification, and use of acetylene for illuminating purposes, and in apparatus therefor.

Claims.—(1.) A system of generating acetylene gas characterized by the arrangement in a generating-chamber of a series of superimposed carbide-containing baskets, trays, or compartments, or a perforated carbide-containing device, and by the provision of a narrow chamber or tube extending the whole length of the carbide-containing device, which tube has a single admission-hole for water, and a series of holes or a long slit to admit that water to the carbide in a circuitous path in such a way that on the one hand the pressure of the gas can regulate the entrance of water through the single admission-hole, and on the other hand this hole is prevented from being stopped up by the lime, and the water cannot spurt through direct to all the carbide at once. (2.) In the system described in claim 1, the arrangement of a siphon for filling the gasometer-tank whereby, when the gasometer is lowered, the air escapes, and the passage is then automatically sealed. (3.) A form of construction of the generator described in claim 1, more particularly for portable lamps, characterized by the series