APRIL 20.] THE NEW ZEALAND GAZETTE. 1391

Complete Specifications filed after Provisionals.

LIST of complete specifications filed after provisional specifications from the 31st March to the 12th April, 1911, inclusive:—

No. 27719.—J. H. Burn, post-marking machine.
No. 27835.—O. A. Jorgensen, stay and fastener for casement, &c.
No. 27561.—G. A. Watson, milk-strainer.
No. 28043.—A. L. J. Tait, aerial machine.
No. 28044.—G. H. Foote, spouting.
No. 28049.—A. R. Craddock and W. Scott, match-lining cramp.
No. 28050.—H. H. L. Parker, manger.
No. 28054.—J. D. McLaurin and A. McLaurin, tank or vat.
No. 28070.—T. Taylor, hurdle.
No. 28109.—United Shoe Machinery Company, shoe-sewing machine. (A. Eppler.)
No. 28110.—United Shoe Machinery Company, channel-guide mechanism for shoe-sewing machine. (E. E. Winkley and A. Eppler.)
No. 28111.—United Shoe Machinery Company, tension device for sewing-machine. (W. C. Meyer and C. P. Holmes.)
No. 28121.—G. Massey, sheep-shearing machine.
No. 28447.—E. R. Shield, fruit, &c., grading apparatus.
No. 29012.—R. H. Gulleford, boot-heel grip.
No. 29052.—W. E. Brown, milk-separator.
No. 29165.—J. Wylie, tea infuser and strainer.
No. 29197.—Scott Bros., Limited, gas-production.

Notice of Acceptance of Complete Specifications.

Patent Office,
Wellington, 19th April, 1911.

COMPLETE specifications relating to the undermentioned 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.

The copies of claims and extracts from the specifications and drawings are merely intended to give some further indication of the invention than is disclosed in the title, and the complete specifications and drawings should be referred to for a description of the invention.

No. 27307.—11th April, 1910.—JOHN JOSEPH KEPPEL, of Lawrence, New Zealand, Inventor. Improvements in wire-strainers.*

Claims.—(1.) A wire-strainer comprising a cup having ratchet-teeth formed around its rim, a drum projecting from within said cup, a flange on the end of said drum, a dowel projecting from the inner face of said flange over said drum, and means on said cup to co-operate with a lever for rotating said cup, substantially as described.

[NOTE.—Here follow two other claims.]
(Specification, 2s. 3d.)

No. 27487.—31st March, 1910.—JAMES WHALL, of Darfield, Canterbury, New Zealand, Blacksmith. An improved construction of vehicle-jack.*

Extract from Specification.—According to this invention, the jack is made of two members, one of which consists of a length of wood or other suitable material forming the standard of the jack. Pivoted to the sides of the standard, near its top end, is a lever which projects beyond the top of the standard and is bent to lie across above such top. The other end of the lever is carried down for any suitable length to form a handle.

[NOTE.—The above extract from the specification is inserted in place of the claims.]
(Specification, 3s. 6d.)

No. 27518.—6th April, 1910.—LOUIS BRENNAN, C.B., of Woodlands, Gillingham, Kent, England, Mechanical and Civil Engineer. Improvements relating to methods of and means for imparting stability to and maintaining stability of bodies, such as single-track vehicles or vessels.

Extract from Specification.—The present invention consists in arranging devices in or upon a body in such a manner that when an unbalanced disturbing couple acts on the body there is derived from the precessional movement of the gyrostst, or from a relative movement, or tendency to movement of the gyrostst frame, and its support, or from both, the proper forces to control powerful forces adapted to influence either the precession of the gyrostst or the relative position of the centre of gravity of the body and its support, or both, whereby maintenance of equilibrium is attained.

The invention further consists in deriving from the precessional movement of the gyrostst, or from a relative movement or tendency to movement of the gyrostst frame and its support, or from both, a combination of forces depending upon the sum of a function of the disturbing moment, and a function of the time integral of the disturbing moment, said combination of forces being employed to control powerful forces adapted to influence either the precession of the gyrostst or the relative position of the centre of gravity of the body and its support, or both, whereby maintenance of equilibrium is attained.

The invention also consists in controlling either the precessional movement of a gyrostst or gyroststs, or the displacement of the centre of gravity of a body carrying a gyrostst or gyroststs, or both, by forces one of which is a function of the displacement of the gyrostst from the central position, while the other force is a function of the reaction between the gyrostst frame and the body carrying said frame.

The invention further consists in acting on the gyrostst or gyroststs with a force whose magnitude depends on the reaction between the gyrostst frame and the body carrying said frame, whether movement be allowed between them or not.

The invention also consists in effecting the displacement of the centre of gravity of a body carrying a gyrostst or gyroststs by a force whose magnitude depends on the reaction between the gyrostst frame and the body carrying said frame.

The invention further consists in providing controlling mechanism for the precessional movement comprising a device, such as a spring or springs, capable of exerting a force proportional to the displacement of the gyrostst from the central position, a device such as a fulcrummed weighing-lever capable of exerting a force substantially proportional to the reaction between the body and the gyrostst frame carried upon said body, with or without a solid friction coupling capable of exerting a force to balance unavoidable friction in the precessional movement.

The invention also consists in providing mechanism for controlling the displacement of the centre of gravity of a body carrying a gyrostst or gyroststs, comprising a device, such as a spring or springs, capable of exerting a force proportional to the displacement of the gyrostst from the central position, a device such as a fulcrummed weighing-lever capable of exerting a force substantially proportional to the reaction between the body and the gyrostst frame carried upon said body, with or without a solid friction coupling capable of exerting a force to balance unavoidable friction in the displacement movement.

The invention also consists in providing mechanism for controlling the displacement of the centre of gravity of a body carrying a gyrostst or gyroststs, comprising a device such as a spring or springs, capable of exerting a force proportional to the displacement of the gyrostst from the central position, a device such as a fulcrummed weighing-lever capable of exerting a force, substantially proportional to the reaction between the body and the gyrostst frame carried upon said body, with or without a solid friction coupling capable of exerting a force to balance unavoidable friction in the displacement movement.

The invention further consists in operating the valves controlling the fluid-pressure by forces, one of which is a function of the displacement of the gyrostst or gyroststs from the central position, another force which is a function of the reaction between the body and the gyrostst frame with or without a third, which is a function of solid friction.

The functions of displacement, reaction, and solid friction, mentioned in the foregoing and following clauses, may be either constant or varying functions.

The invention also consists in controlling apparatus, comprising elastic fluid cylinders controlled by valves operated jointly by spring means, a fulcrummed weighing-lever and a solid friction device.

The invention consists also in controlling either the precessional movement of a gyrostst or gyroststs or the dis-