Mar. 23.] THE NEW ZEALAND GAZETTE. 1095

and transverse connecting-portions, and while so bending the edge-forming loops or eyes imparting a twist to the wire and thereby placing the same under initial torsional strain. . . . (5.) A garment-stay composed of wire bent at intervals alternately in opposite directions to form two series of oppositely disposed loops or eyes, portions of the wire being twisted and thereby put under an initial torsional strain.

[NOTE.—Here follow four other claims.]

(Specification, 5s. 9d.)

No. 29034.—24th January, 1911.—EUGENE DATINO, of 3 Queen Annes Chambers, Westminster, London S.W., England, Engineer. Improvements in and relating to apparatus for the generation of gas from liquid hydrocarbons.

Extract from Specification.—My invention relates to the generation of gas for illumination, power, and other purposes from petrol and other liquid hydrocarbons, and it consists in the combination of parts comprising essentially a hydrocarbon receptacle, a hydrocarbon distributor, a compressor for supplying the requisite air, and a carburetter subject only to the heat of the atmosphere.

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

(Specification, 11s. 9d.)

No. 29047.—25th January, 1911.—JOHN GILRUTH GILRUTH, of No. 2 Bourke Street, Melbourne, Victoria, Australia, Tea-merchant. An improved apparatus for the manufacture of combustible gas for lighting and heating.

Extract from Specification.—This invention comprises a blower or apparatus for delivering a regulated quantity of air under pressure, having suitable valves for regulating the delivery therefrom, controlled or operated by the volume of the combustible gas in the gas-holder. This blower delivers the air into the carburetter, within which the volatile oils are delivered in regulated quantities, and from which the combustible gas is discharged into the gas-holder.

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

(Specification, 8s.)

No. 29059.—27th January, 1911.—ARTHUR GUYON PURCHAS BROOKFIELD and ARTHUR SYDNEY PURCHAS BROOKFIELD, of Glen Orchard, St. Helier’s Bay, Auckland, New Zealand, Mechanical Engineers. Improvements in internal-combustion engines.

Claims.—(1.) A cylindrical valve for internal-combustion engines having an inlet-chamber and an exhaust-chamber, with suitable ports for effecting the cycle of operations in the cylinder, said ports so disposed as to reduce the speed of working of the valve, and avoid noise by discarding springs as well as reducing friction by balancing the valve, as shown and described. (2.) A cylindrical valve for internal-combustion engines working in a valve-casing, having ports in the casing disposed relative to ports in the valve, so as to avoid noise and friction and perfectly balance the valve, with means for preventing leakage past the ports in the valve, and adjusting for wear on the valve-casing, all substantially as shown and described.

(Specification, 6s. 3d.)

No. 29064.—27th January, 1911.—JOHN HENRY ORMOND, of Gisborne, New Zealand, Coachbuilder (assignee of William Samuel Hart, of Gisborne aforesaid, Carpenter, and the said John Henry Ormond). Evaporating-filter cooler.

Extract from Specification.—The invention consists of a hollow vessel with two walls, the outer wall being made of some non-porous substance such as concrete, the inner of some porous substance such as cement and sand, coke-cinders, or burnt clay. The open space between the two walls is filled with water, which filters through the inner wall and falls on a quantity of absorbent material, such as broken brick or pumice. The vessel may be kept inside a house, or outside, but in either case it is sunk some distance into the ground. A long, hollow pipe, with a cowl on top, fits into the bottom of the vessel and assists in producing a larger draught.

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

(Specification, 1s. 9d.)

No. 29099.—7th February, 1911.—McKIERNAN - TERRY DRILL COMPANY, a corporation organized under and pursuant to the laws of the State of New Jersey, United States of America, and having a place of business at No. 115 Broadway, New York, United States of America (assignees of Charles Herman Haeseler, of Philadelphia, Pennsylvania, United States of America, Engineer). Improvements in and relating to power-operated percussive tools.

Extract from Specification.—The employment of a special cushioning piston of smaller effective area than that of the percussion piston, secured to a longitudinally fixed bar or rod, such bar or rod in the case of a rock-drill or similar tool being conveniently the rifle-bar thereof, the said cushioning piston being mounted in a cylinder provided in or carried by the percussion piston, and the provision of means by which the motive fluid is admitted to the said cylinder in front of the cushioning piston during the forward movement of the percussion piston, and is held entrapped therein during the entire return movement of the percussion piston, so that it will be compressed in such return movement to a high degree. The fluid thus compressed forms an efficient cushioning-means, the high degree of compression attained by reason of the length of stroke being found sufficient for all purposes, yet the fact that the pressure therein rises slowly until near the end of the stroke causing the percussion piston to make substantially a full and complete stroke under all conditions. The motive fluid thus compressed reacts upon the next forward stroke to augment the motive fluid admitted for power purposes, so as to increase the speed and force of the forward or power stroke, thereby increasing the efficiency of the drill to a considerable extent. A further advantage of the high degree of compression thus attained is the heating of the motive fluid. Not only is its tension increased, but where steam is employed as such motive fluid the superheating immediately obviates any tendency toward condensation thereof, and prevents water from collecting in the drill. This is particularly beneficial when it is considered that these drills are commonly used in the open and often during cold weather, with almost no attempt at heat-insulation of the connecting pipes. The cushioning-means just described may be used either supplementary to the common expedient of admitting motive fluid at the rear of the percussion piston during its return movement as first above described, or instead thereof. Preferably the motive fluid will still be admitted behind the percussion piston before the completion of the return movement thereof, but at a somewhat later period, this being for the double purpose of increasing the cushioning-action at the extreme end of the stroke, and the building-up of pressure for the next forward stroke.

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

(Specification, 12s. 6d.)

No. 29100.—7th February, 1911.—JOSEPH EDWARD WOOD, of 4110 Whitman Avenue, Seattle, Washington, United States of America, Manufacturer. Display apparatus.

Claims.—(1.) A display apparatus comprising a plurality of display-cards swingingly supported at one edge portion, and means for swinging said display-cards, including an actuator supported for rotary and axial movements, and strike-lugs, each connected with a respective card, said strike-lugs being spaced to be successively engaged by said actuator during its axial movement.

[NOTE.—Here follow thirteen other claims.]

(Specification, 8s. 9d.)

No. 29108.—7th March, 1910.†—JOHN MOYES, of 13 Bogton Avenue, Cathcart, Glasgow, Scotland, Gas Engineer, and CHARLES ALEXANDER STEVENSON, of 28 Douglas Crescent, Edinburgh, Scotland, Civil Engineer. Improvements in and relating to signalling-apparatus.

Extract from Specification.—Under our invention the ignition of the gases in the explosion-chamber of the apparatus is effected by means of one or more electric sparking-devices, the action of which is controlled automatically from the occulting-apparatus so that the mechanism which regulates the supply of gas periodically to the explosion-chamber also regulates the explosions. The supply of gas to the occulting-apparatus may also, if desired, be controlled electrically, and the explosion-chamber may, if desired, have fitted, in connection therewith, means for producing luminous as well as audible signals.

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

(Specification, 9s. 3d.)