1588
THE NEW ZEALAND GAZETTE.
[No. 57

(8.) A furnace having a series of elongated arch-openings and, in combination, a series of hearth-inlets, each arranged as and for the purposes set forth. (9.) The combination with the parts in claim 3 of means for rotation beneath the hearth, connected to rabble-feet spindles which pass through the hearth air-inlets but have not extensions to the furnace-arch, said arch being wholly closed during the rabbling. (10.) In a furnace, an elongated hearth having beneath it a tunnel for the purposes set forth, in combination with, over one end of the hearth, means for feeding the ore; at the other end the main fireplace; and one or more additional fireplaces arranged at the side or opposite sides along the length of the furnace, as and for the purposes described. (11.) In a furnace, a rabble of the construction comprised substantially by the foot, stem, spindle, and other parts heretofore described, illustrated in Fig. 5. (12.) In a furnace, the combination of parts in the next preceding claim with an annular pan set loosely round the stem f, under the spout l, and a collar or bearing as v below the hearth round the spindle f¹ to keep the rabble in position.
(Specification, 7s.; drawing, 1s.)

No. 16169.—2nd April, 1903.—JAMES THOMAS HUNTER, of Queen’s Chambers, Wellington, New Zealand, Engineer (nominee of the Cooper-Hewitt Electric Company, of 120, Broadway, New York, United States of America, Manufacturers; the assignees of Peter Cooper-Hewitt, of 11, Lexington Avenue, New York aforesaid, Scientist). Method of and apparatus for transforming electrical energy.

Claims.—(1.) The method of producing a periodic flow of electric current through a medium which is non-conductive under the influence of currents below a given value, and which is rendered conductive by a difference of potential materially greater than said value, and remains conductive through the intermediate values, which consists in first applying to the terminals of said medium a potential of the higher value, thereby rendering the medium sufficiently conductive to cause a drop of potential below the lower value and thus interrupting the flow of current and successively repeating this operation. (2.) The method of operating a gas or vapour electric lamp by means of intermittent or vibratory currents, substantially as described. (3.) Apparatus for producing intermittent or vibratory electric currents comprising a condenser and a device in the discharge circuit of the same, which device has a definitive consumption period with relation to the electro-motive force of the discharge circuit. (4.) Apparatus for producing intermittent or vibratory electric currents arranged and operating substantially as described with reference to the drawings.
(Specification, 8s. 6d.; drawing, 1s.)

No. 16230.—15th April, 1903. WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of the Cooper-Hewitt Electric Company, of 120, Broadway, New York, United States of America, Manufacturer; assignees of Peter Cooper-Hewitt, of 11, Lexington Avenue, New York, aforesaid, Scientist). Improved device for producing a gas or vapour bath for electric current.

Claims.—(1.) An electrical apparatus of the kind described in which the enclosing chamber is made partly or wholly of conducting-material so that the heat developed therein may be readily dissipated. (2.) The modification of the invention in which the chamber is made in two parts, united by a separable joint either with or without a seal of plastic material, substantially as described. (3.) An electrical apparatus of the kind described in which the enclosing chamber is provided with an oil or water jacket for conducting away heat therefrom, substantially as described. (4.) An electrical apparatus of the kind described provided with means for condensing or removing gases or vapours from the enclosing chamber when necessary, substantially as described.
(Specification, 6s. 6d.; drawing, 1s.)

No. 16361.—16th May, 1903.—THOMAS MICHAEL O’ROURKE, of Matakītaki, New Zealand, Hotelkeeper. A combined screen and elevator for use on gold-saving dredges.

Claims.—(1.) In gold-saving dredges, the combination, with a revolving screen or inclined grating, of an elevator which travels beneath the discharge-end of the screen or grating, such elevator being so constructed as to allow of the fine constituents of the material fed on to it from the screen or grating being washed through it into a conductor below, as described. (2.) In gold-saving dredges, the combination, with a revolving screen or inclined grating, of an elevator which
travels beneath the discharge-end of the screen or grating, such elevator being so constructed as to allow of the finer constituents of the material fed on to it from the screen or grating being washed through it, and an inclined chute mounted below the elevator along which the elevator travels in an upward direction, and conductors leading from the bottom end of the chute to the gold-saving tables, as set forth. (3.) A combined screen and elevator for use on gold-saving dredges, the same consisting of a number of rows of links, each link of which is provided with an upward right-angled extension, and the ends of each row of which alternately overlap the ends of the rows next in order to it, the whole of the rows being hinged together in a continuous order by pins passing through the lapped portions, substantially as specified. (4.) The general arrangement, construction, and combination of parts in my combined screen and elevator for use on gold-saving dredges, as described and explained, as illustrated in the drawings, and for the several purposes set forth.
(Specification, 4s. 3d.; drawing, 1s.)

No. 16395.—28th May, 1903.—MAX WAGNER, of Wiesbaden, Germany. Skeleton bearing.

Claims.—(1.) A bearing-liner or slipper-plate formed by the combination of a resistant metal and a soft metal, the resistant metal being in the form of a rigid skeleton for and enclosed in the soft metal, so as together to form a complete and resistant bearing, the soft metal alone forming the frictional bearing-surface, although the skeleton may show at the outer surface of the liner, as specified. (2.) The construction of a bearing-liner or slipper-plate in accordance with claim 1, the skeleton being formed or united to the body portion of the bearing-bracket, or other part to be provided with the bearing-surface, formed by the soft metal in which the skeleton is imbedded, as described.
(Specification, 4s.; drawing, 2s.)

No. 16451.—8th June, 1903.—GEORGE HOLFORD, of Auckland, New Zealand, Master Mariner. An improved trap for rats or other animals.

Claims.—(1.) In means for trapping animals, an endless box or receptacle provided with vertically sliding doors at both ends, such doors being connected together so as to rise and fall simultaneously, in combination with means whereby the doors may be held in the raised position and released so as to drop and close the box upon an animal passing partially through it, substantially as specified. (2.) In means for trapping animals, an endless box or receptacle provided with vertically sliding doors at both ends, a rigid bar connecting the top ends of the two doors together, and a light frame pivoted loosely across the width of the box and provided with an upwardly extending arm above the top surface thereof, such arm being adapted to support the bar connecting the two doors upon its end, substantially as and for the purposes specified.
(Specification, 2s. 3d.; drawing, 1s.)

No. 16452.—8th June, 1903.—ROBERT WALKER ASHCROFT, Tinsmith, and WILLIAM JOHN MADDREN, Mechanic, both of Palmerston North, New Zealand. An improved lid for milk-cans and the like.

Claim.—In milk-cans and the like, a lid provided with a rim tapering downwards and outwards, the bottom edge of which is adapted to fit closely within the neck or mouth of the can, and a flange extending outwards around the top edge of the rim and adapted to fit upon a corresponding flange extending inwards from the top edge of the can neck or mouth, substantially as and for the purposes set forth.
(Specification, 1s. 9d.; drawing, 1s.)

No. 16461.—10th June, 1903.—HENRY SMITH HAYLING, of 12, Acland Street, St. Kilda, Victoria, Gentleman (assignee of Alexander Mansfield, of 60, Brunswick Street, North Fitzroy, Victoria, Blacksmith). Improvements in tip-wagon mechanism.

Claims.—(1.) In combination with a tip-wagon, a trunnion at each end so supported by a slidable carrier that either end of the wagon may be raised higher than the other, an inclined slot in which said carrier is fitted, and an inclined screw adapted to be rotated to raise and lower each carrier, substantially as and for the purposes set forth. (2.) In com-