Num. 80. 1855

SUPPLEMENT
TO THE
NEW ZEALAND GAZETTE
OF
THURSDAY, SEPTEMBER 28, 1899.
Published by Authority.

WELLINGTON, THURSDAY, SEPTEMBER 28, 1899.

Notice of Acceptance of Complete Specifications.

Patent Office,
Wellington, 27th September, 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 objection 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. 11437.—11th March, 1899.—ALEXANDER HAMILTON CHAPMAN, of 54, Lambton Quay, Wellington, New Zealand, Sheep-farmer. An improved method of constructing the walls of freezing-chambers, cold-stores, and other places where a low temperature is required, whereby their insulation is rendered more effective.*

[NOTE.—The title in this case has been altered. See list Provisional Specifications, Gazette No. 23, of the 30th March, 1899.]

Claim.—The compound selective absorption insulation, with or without reflectors and with or without air-spaces, for insulating cold-stores, freezing-chambers, and other places where low temperature is required.
(Specification, 3s. 9d.; drawings, 3s.)

No. 11617.—12th May, 1899.—ROBERT HANITCH HESSLER, of 536, Illinois Street North, Indianapolis, Indiana, United States of America, Electrical Engineer. Improvements in speed-varying devices, and electric motors for use therein.*

Claims.—(1.) An induction motor the number of poles in the primary member of which can be changed by reversing the direction of the current in certain portions of the primary winding with reference to the core in such a manner that the winding is always connected in series. (2.) An induction motor the primary winding of which is divided into two sections connected in series, one of said sections embracing twice as many poles as the other section, the direction of current in one of the sections being able to be reversed relatively to the direction of current in the other section, substantially as and for the purpose specified. (3.) Induction motors having a primary winding arranged substantially as described with reference to the drawings.
(Specification, 5s. 3d.; drawings, 11s.)

No. 11804.—12th July, 1899.—DAVID MILLER, of Auckland, New Zealand, Ventilating Engineer. An improved ventilator for buildings and suchlike.

Claims.—(1.) In an updraught and exhaust ventilator having a top cone secured and held to other part of ventilator by standards, the under and deflecting plate being the bottom of the said top cone for the purpose set forth, substantially as described and illustrated. (2.) In an updraught and exhaust ventilator, in combination with the vent-shaft projecting into a double cone, forming a hollow air-circulation chamber with an opening at the top of said chamber, and supporting thereon, by standards secured thereto, a top cone having a flat base or bottom, the said flat base or bottom being an under and deflecting plate for the purpose set forth, substantially as described and illustrated.
(Specification, 2s. 6d.; drawings, 6s.)

No. 11825.—21st July, 1899.—RICE OWEN CLARK, Jun., of Hobsonville, Auckland, New Zealand, Pipe-manufacturer. A machine with stationary or reverse moving centre for working any clay or other like substance.*

Claims.—(1.) In a machine for working clay and the like, a spiral bar or bars made to revolve around a core substantially as set forth. (2.) In a machine for working clay and the like, a spiral bar or bars made to revolve around a core, the said core being made to revolve in a direction opposite to the spiral bar, substantially as set forth. (3.) In a machine for working clay and the like, in combination, a spiral bar or bars made to revolve around a core, a hollow shaft to carry the spiral bar or bars, a shaft to carry and revolve the core in a direction opposite to the spiral bars, and a cylinder around the spiral bars, substantially as set forth. (4.) The improvements in machines for working clay and the like consisting of parts constructed, arranged, and operating substantially as set forth.
(Specification, 2s. 3d.; drawings, 5s. 6d.)

No. 11873.—4th August, 1899. — ALBERT MALTMAN, of Reefton, New Zealand, Battery Superintendent. Concrete pyritic-slime separator.

Claims.—(1.) The described method of separating mineral slimes from waste in the tailings from a quartz mill, by means of distribution, consisting of first dividing the pulp by means of a launder divided into equal parts for that