FEB. 8.] THE NEW ZEALAND GAZETTE. 481

drawings and for the purpose set forth. (5.) In the process of preventing the decomposition of fish, the purifier B in combination with concentrated sea-water or solution of sodium-chloride at a temperature approaching its freezing-point, substantially as described, and shown on the drawings, and for the purposes set forth. (6.) In the process of preventing the decomposition of fish, in combination, the purifier A, the purifier B, the rapid freezer C, and purified concentrated sea-water at a lower temperature, substantially as set forth. (7.) In the process of preventing the decomposition of fish, the use of charcoal for purifying the liquid circulated through and around said fish, substantially as and for the purpose set forth. (8.) The means for and method of preventing the decomposition of fish, substantially as described, and shown on the drawings, and for the purpose set forth.
(Specification, 7s. 6d.; drawing, 1s.)

No. 20526.—4th January, 1906.—EDWARD NEEDHAM WATERS, a member of the firm of Edward Waters and Sons, Patent Attorneys, of Nos. 414-418, Collins Street, Melbourne, Victoria, Australia (nominee of John Harris Hendy, of No. 51, Fremont Street, San Francisco, California, United States of America, Merchant). Mortar for crushing-mills.

Claims.—(1.) A rectangular crushing-mortar having screen openings upon all its sides, with means for securing screens in each, a receiving and directing trough having its apex and highest point behind the mortar, said trough declining in each direction and connecting with side troughs declining upon each side to the front and discharging upon the front inclined table. (2.) In a mortar adapted for the crushing of rock and like material by means of rising and falling stamps, and having a feed opening and channel at the rear upper portion, a sluice or trough extending entirely around the lower part of the mortar having its apex and highest point at the rear and centre portion of the mortar and an open discharge at the lowest portion in front, rectangular openings upon all sides of the mortar with means for securing screens therein, each of said openings discharging into the contiguous portion of the sluice.
(Specification, 3s. 9d.; drawing, 1s.)

No. 20528.—4th January, 1906.—LÉON SERPOLLET, of 9 and 11, Rue Stendhal, Paris, France, Civil Engineer. Improvements in or relating to steam engines or motors.

Claims.—(1.) A steam-motor in which the driving-shaft, the connecting-rods, and the cam shaft move in a casing which contains oil, and which is secured to the motor-cylinders through the interposition of cylindrical sleeves or cylinder prolongations, having in their interior sliding blocks adapted to prevent the oil from being projected against the walls of the cylinder, for the purpose specified. (2.) A steam-engine having its lubricating and steam-distributing devices constructed, arranged, and adapted to operate substantially as described with reference to the drawings for the purpose specified.
(Specification, 3s. 6d.; drawing, 1s.)

No. 20533.—6th January, 1906.—ANSON GARDNER BETTS, of 16th Street and N. Corner, 7th Avenue, Troy, New York, United States of America, Chemist. Improvements in electrical conductors.

Claims.—(1.) An electric conductor comprising free uncombined sodium covered with means for preventing chemical action thereon at ordinary temperatures. (2.) An electric conductor comprising sodium enclosed and supported by a metallic sheath of relatively great durability. (3.) An electric conductor comprising sodium enclosed, supported, and protected by a copper sheath. (4.) An electric conductor comprising sodium enclosed and protected by a tubular sheath flattened throughout a portion of its length. (5.) An electric conductor comprising free uncombined sodium enclosed and protected by a tubular sheath, and plugs inserted in the ends of the sheath having protruding terminals of relatively durable metal. (6.) An electric conductor comprising a series of sections each formed of sodium enclosed in a protecting sheath, and relatively durable metallic connections between the sections. (7.) An electric conductor comprising sections formed of sodium enclosed in relatively durable sheaths and flexible metallic connections between the ends of the sections. (8.) An electric conductor comprising a series of sections formed of sodium enclosed in metallic sheaths having their ends united to form a continuous tube. (9.) An electric conductor comprising a series of sections formed of sodium enclosed and protected by tubular sheaths, and a connecting yoke between two sections providing electrical connection and means for support upon an insulator.
(Specification, 6s. 6d.; drawings, 2s.)

No. 20535.—6th January, 1906.—ARTHUR ROBERT HUBBARD, of 181, Drummond Road, Surrey, England, Engineer, and ROBERT FLAY, of 73, Gloucester Street, Middlesex, England, Engineer. Improvements in kitchen-ranges.

Claims.—(1.) In kitchen-ranges, a firegrate constructed with teeth cast upon two parallel horizontal shafts or axes, the teeth being formed with two of their sides of greater length than the third or top side, the three sides being convex in end view and the two lower sides terminating in a point at the bottom and presenting a greater surface for the air to travel through in its passage to the fire, the two shafts being carried through from the front to the back of the fireplace and arranged to revolve in bearings in the latter and geared together so that when one of the shafts is turned more or less the two shafts with their teeth are caused to rock and the fuel resting upon them is agitated to any desired extent, substantially as described and illustrated. (2.) In kitchen-ranges, a fire-pot fitted upon the firegrate described and formed with vertical ribs upon its inner side rising from the grate to its upper edge, and a loose ring having upon its outer periphery projections fitting freely between and guided by the vertical ribs in the fire-pot, which ring can rise and fall more or less simultaneously with the moving of the teeth upon the shafts and having short projections or bars where required to complete the area of the fireplace, substantially as described and illustrated. (3.) In kitchen-ranges, an annular boiler surrounding the fire-pot described in claim 2 for the supply of hot water to a hot-water tank and connected by circulating-pipes in the usual manner, substantially as described and illustrated. (4.) In kitchen-ranges, the combination of the firegrate described and claimed in claims 1 and 2 of a heating or generating chamber, a hot plate covering this chamber with a space between the fire-pot and the hot plate for the passage of the products of combustion, a pipe or chamber between two ovens arranged as described communicating with a space upon the outside wall of the ovens, from whence the products of combustion return through a space formed above the floor of the upper oven and thence pass to a chimney, and a damper for regulating the size of the exit to the chimney, substantially as described and illustrated. (5.) In kitchen-ranges, the fireplace having holes for the admission of air in front of the firegrate into the heating-chamber, the hot air circulating through the ovens and heating the latter and being eventually drawn through holes in the base of the firegrate, substantially as described and illustrated. (6.) In kitchen-ranges, the sliding tray moving freely in guides upon antifriction rollers and pivoted by means of bars and pivots to a handle in front of the oven by which the sliding tray can be moved quickly in or out, substantially as described and illustrated. (7.) The improved kitchen-range, substantially as described.
(Specification, 6s. 6d.; drawings, 3s.)

No. 20542.—8th January, 1906.—WILLIAM FRASER CLAUGHTON KELLY, B.A., of 8, Perham Road, Kensington, Barrister-at-law, and JOHN ARTHUR BENTHAM, of 36, Beaumont Street, Portland Place, Gentleman, both in the County of London, England. Improvements relating to photographic dry plates, films, or the like.

Claim.—A photographic plate or film bearing on itself a dry developing-mixture compounded with borax and for development by the application of water only, substantially as described.
(Specification, 1s. 6d.)

No. 20548.—10th January, 1906.—THOMAS LEOPOLD WILSON, of 188, Metcalf Street, Ottawa, Ontario, Canada, Engineer. Improvements in combined gas, whistling, and bell buoys.

Extract from Specification.—My invention relates to improvements in combined whistling, bell, and lighting buoys, and the object of my invention is to provide a buoy of this class of a maximum strength and durability and so constructed and arranged as to present a minimum resistance to the current and effectively resist the great shocks to which it is subjected. A further object is to provide means for increasing the efficiency of the bell-ringing mechanism whereby the bell may be heard a considerable distance further from the buoy than hitherto possible; and it consists essentially of a central, vertical, gas-containing tubular portion, a flotation-chamber formed of two spheroidal circumferentially joined plates each connected at its centre to said vertical portion and braced thereby, two air-compressor tubes diametrically opposite to and balancing each other on each side of the vertical portion and extending through said flotation-chamber, a suitable bell-ringing mechanism, a tube enclosing a column of water, and means in said tube to cause the