1408
THE NEW ZEALAND GAZETTE.
[No. 65

justed to thrust out and in of slots and probe, jacket fitting over said cylinder, carrying shoulder and pin, said pin working in slots in cylinder, and hole between knives and handle, all for the purpose set forth, substantially as described and illustrated. (5.) In a probe instrument as described, in combination, the probe having two or more slots, the shoulder fixed beneath slots, the rod connected to probe, said rod having slots inside, knives fitted into said rod and side slots, blades on upper ends of said knives adjusted to thrust out and in of slots in probe, lower shoulder connected to handle fitting over said rod, lower ends of knives projecting through slits in said lower shoulder, and held in position by rivets, spiral spring below handle fitting over rod, and button to keep same in place, all for the purpose set forth, substantially as described and illustrated.
(Specification, 4s. 9d.; drawings, 5s. 6d.)

No. 12667.—8th June, 1900.—CHARLES BEDE TREFLE, of Temora, New South Wales, Farmer. Equaliser for yoking any number of horses abreast.

Claim.—A bar, with sheaves inserted in or attached to same, and an endless rope or chain running on said sheaves and through pulleys attached to swinglesbars, to which traces from horses are hitched, as specified, and as illustrated in the drawings.
(Specification, 1s. 6d.; drawings, 3s.)

No. 12752.—2nd July, 1900.—HOLMES SAMUEL CHIPMAN, of 54, Margaret Street, Sydney, New South Wales, Merchant. Improvements in certain descriptions of oil lamp burners.

Claims.—(1.) In lamps of the description set forth, the combination with the wick-raiser tube, and devices for raising and lowering said wick-tube, of adjustable devices for regulating and controlling the extent of the vertical movement of said wick tube or lifter, substantially as described and explained. (2.) In lamps of the description set forth, the combination and arrangement with an inner tube or lifter, such as B, of a bent rod such as E, with its upper end screwed, and forming a rack such as E1, passing through a chamber such as F, and through a stop-piece such as H2, and having a nut thereon such as E2, of a milled head such as G3, and pinion such as G1 gearing in said rack on said screwed rod E1, as and for the purposes substantially as described and explained, and as illustrated in the drawing.
(Specification, 3s.; drawings, 8s.)

No. 12753.—2nd July, 1900.—LARS CHRISTIAN NIELSEN, of Fredriksberg, near Copenhagen, Denmark, Constructor. Improvements in burners for oil-lamps having incandescing mantles.

Claims.—In burners of oil-lamps of the class in which incandescent mantles are employed, and to which the atmospheric air is conducted in an upward direction, partly in the interior of the wick-tube and partly outside and round the same: (1.) The arrangement inside the wick-tube of a generator a of oil-vapours, such generator taking the shape of a reversed cup, and being placed directly above the burning surface of the wick, and underneath the flame, in combination with a ring d provided with channels, also arranged inside the said tube, by means of which arrangement all the air ascending inside the wick-tube is collected into one resulting internal current of air. (2.) The arrangement of a ring i provided with channels and attached to the outer side of the wick-tube, in combination with an inclined surface k, placed directly over the said channels, by means of which arrangement all the air ascending outside the said tube is collected into an external current of air, this latter current, together with that inside the wick-tube, enclosing the oil-vapours of the wick, thus allowing them to be intimately mixed with the air, the external current of air being conducted into the hollow space inside the incandescent mantle, where the combustion proper takes place. (3.) The improved burner constructed substantially as described and illustrated.
(Specification, 5s. 9d.; drawings, 5s. 6d.)

No. 12754.—2nd July, 1900.—SVEN PETTER AXEL ANDERSON, of Backasandsgard, Odeshog, Sweden, Engineer. Improvements in centrifugal churns.

Claims.—(1.) A centrifugal churn having a grating consisting of a number of thin and broad knives or blades placed side by side comparatively close together, and occupying such a position that, viewing the knife-blade in cross-section, it runs concentric or nearly concentric with the direction in which the body of the cream rotates, for the purpose of causing the cream to pass in thin layers between the knives or blades, substantially as set forth. (2.) In a centrifugal churn, as firstly claimed, the arrangement of the knives or blades to diverge somewhat from one another, for the purpose of causing the cream entering between the edges of the most closely situated knives to be spread as it passes between the knives or blades, and, owing to the varying inclination of the latter, creating a sliding motion of the cream-layers with reference to one another, substantially as set forth. (3.) In a centrifugal churn as firstly claimed, the arrangement of the knives or blades so as to be inclined somewhat to the radius of the container, in such a manner that they direct the body of cream passing inward towards the centre of the container. (4.) In a centrifugal churn as firstly claimed, constructing the entire grating, which is slightly warped, so that it is inclined to the plane defined by the axis of rotation of the container, substantially as set forth. (5.) In a centrifugal churn as firstly claimed, the employment of knives or blades which are slightly warped, substantially as set forth. (6.) The construction of churn substantially as described, and shown on the drawing.
(Specification, 4s. 6d.; drawings, 5s. 6d.)

No. 12757.—3rd July, 1900.—WALTER ANDREWS, of Andrews and Manthel, Tory Street, Wellington, New Zealand, Engineers, &c. An improved double-seated silent ball cock.

Description.—An improved double-seated silent ball cock for filling cisterns and suchlike vessels. The ball cock complete is fixed to a water-pipe in the ordinary way, and is kept shut by a valve A, controlled by a ball float J, attached to the end of a lever B. When the cistern or vessel in which it overhangs is emptied, the lever B drops (as in drawing), and the circular piece C, which is contained in a slot in the valve-spindle D, D, and which is also part of the lever B, draws the valve away from the valve-inlet E. In thus opening the back part of the valve F, F, comes in contact with another valve-seat G, G, and so effectively prevents the water oozing out all round the valve-spindle D, D. The water is thus compelled down the only outlet for it, marked H.

Claim.—An improved double-seated silent ball cock, which has a back valve and seat, substantially as described, and shown on drawings.
(Specification, 1s. 3d.; drawings, 3s.)

No. 12760.—5th July, 1900.—FRASER AND CHALMERS, LIMITED, of 43, Threadneedle Street, London, England, Engineers and Manufacturers (assignees of Johann Stumpf, of 27, Rankestrasse, Berlin, Germany, Engineer). Improvements in pumps.

Claims.—(1.) In a pump, the arrangement of piston and liquid-containing chamber in the pump-casing, substantially as and for the purpose described. (2.) In a pump, the arrangement of liquid-containing chamber and piston, said chamber having suction- and delivery-valves in same, and operating substantially as and for the purpose described. (3.) In a pump, the arrangement of casing, liquid-containing chamber, suction- and delivery-valves, and piston, substantially as described and illustrated.
(Specification, 4s.; drawings, 8s.)

No. 12761.—5th July, 1900.—ANTONIN GERMOt, of 22, Avenue de Courbevoie, Asnieres, near Paris, France, Civil Engineer. Improvements relating to the treatment of lead-ores for obtaining metallic lead.

Claims.—(1.) A process for treating lead-ores for obtaining metallic lead therefrom, consisting in passing air through a mass of molten sulphide of lead containing silver and other metals, in collecting without contact of external air the fumes of sulphide of lead which separate from the mass, and in introducing the said fumes after condensation thereof into another mass of lead or of lead and sulphide of lead containing no silver or other metals, through which mass a current of air is blown, substantially as described. (2.) The modification of the process defined in the first claim, the said modification consisting in causing the fumes of sulphide of lead separated from the molten mass by the blowing of air therethrough to fall back direct into the said molten mass, substantially as described.
(Specification, 3s.)

No. 12762.—5th July, 1900.—JOHN SMITH AND SONS, LIMITED, of Field Head Mills, Bradford, York, England, Worsted-spinners, and WALTER LEACH, of Field Head Mills, Bradford aforesaid, Technical Chemist. Improvements in the treatment of the wash-liquors from wool and other animal fibre to recover the grease and potash therefrom.