Jan. 24.] THE NEW ZEALAND GAZETTE. 297

said chamber having connections to filtering-apparatus, and valves for regulating the action of the filtered solutions, a pressure-chamber in combination with said revolvable cap having connections to said filtering-apparatus, and valves to regulate the action of the said pressure, substantially as described and illustrated. (5.) In improvements in atmospheric filters, the hollow column l divided into compartments by partitions, substantially as described and illustrated. (6.) In improvements in atmospheric filters, the combination with a hollow column, a revolvable cap, radial arms, flexible hose, a filtering-frame, and an adjustable base, substantially as described and illustrated. (7.) In improvements in atmospheric filters, the combination of a vacuum compartment, a pressure compartment having gland packing-boxes, valves, and flexible hose-connections to filtering-frames, substantially as described and illustrated. (8.) In improvements in atmospheric filters, the arrangement and combination of parts for the purpose of automatically charging, filtering, washing, and discharging pulp, substantially as described and illustrated.

(Specification, 6s. 6d. ; drawing, 1s.)

No. 20849.—14th March, 1906.—HEINRICH CARL BECKER, of 66 Lichfield Street, Christchurch, New Zealand, Glue and Gelatine Manufacturer. An improved method of and apparatus for extracting fat and wool from hide and sheep fleshings.*

Claims.—(1.) The method of treating fleshings for the purpose indicated, consisting in washing the fleshings in water having a temperature of 120°, transferring the fleshings to a washing-machine or tanning-paddle and washing at a temperature of 120° for about thirty minutes, and while still hot subjecting the fleshings to centrifugal force while being sprayed with water at a temperature of 120°, substantially as set forth. (2.) In a process as described in claim 1, the employment of a hydro-extractor and water-supply pipe provided at its end with a sprayer, and a steam-pipe connected to the water-supply pipe, the steam from which raises the temperature of the water before entering the hydro-extractor, substantially as set forth.

(Specification, 3s. ; drawing, 1s.)

No. 21163.—17th May, 1906.—JAMES JOSEPH GILDAY, of Berringa, Victoria, Australia, Miner. An improved pump.*

Extract from Specification.—This invention relates to means for pumping air, water, or other fluids or semi-fluid material, and is particularly adapted for exhausting or supplying air to mines, inasmuch as any slip of the air is prevented. It comprises an external stationary cylinder into which is accurately fitted a revolvable internal cylinder having a screw or auger secured therein and extending across the whole of its diameter. With this construction the air is drawn through a cylinder rotating in the same direction as the screw, and consequently the air is subjected to little or no frictional resistance in its passage through the pump. The pitch of the screw is fine at the intake, and gradually increases to a coarse pitch at the outlet, which construction, in conjunction with a tapering central core on said screw, prevents the air from slipping back and at the same time increases the velocity of the air.

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

(Specification, 5s. 3d. ; drawing, 1s.)

No. 21194.—31st May, 1905.—GOTTFRIED LUDWIG MAX DÖRWALD, of 28 Mexfield Road, East Putney, London, England, Engineer. Improvements in carburetters for internal-combustion engines.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claims.—(1.) In a carburetter for internal-combustion engines wherein heavy hydrocarbon is used as fuel, a special device by which a light hydrocarbon is supplied for starting and automatically shut off as soon as the walls of the spraying-chamber, which is jacketed for heating purposes, have reached the temperature at which the heavy hydrocarbon vaporises and can then form with air an homogeneous mixture suitable for proper combustion inside the cylinders. (2.) In a carburetter for internal-combustion engines wherein hydrocarbon is used as fuel, an expansive thimble or receptacle containing mercury or other suitable substance, which thimble or receptacle being in close contact with the wall of the above-mentioned spraying-chamber responds readily to its changes of temperature and raises a fulcrumed lever, which, besides opening or closing the heavy or light hydrocarbon supply, also operates a valve for increasing the supply of air at the same time as it opens the heavy-fuel supply, and a valve for diverting the exhaust and preventing overheating of the spraying-chamber. (3.) An automatic carburetter for internal-combustion engines using heavy hydrocarbon as fuel and starting on light hydrocarbon, as described with reference to the drawings.

(Specification, 4s. ; drawing, 1s.)

No. 21209.—26th May, 1906.—HUGH TAYLOR, formerly of Weymouth, Manarewa, New Zealand, now of 200A Willis Street, Wellington, New Zealand. A new or improved powder to be used in making starch, blue, and the like, for the purpose of rendering them fireproof.

Claim.—The combination of the following elements—namely, soda, tungstate, borax, and maize-flour or other suitable starchy compound—substantially as described, to produce a fireproof starch for garments.

(Specification, 1s.)

No. 21689.—23rd August, 1906.—WILLIAM DALL, of Dunedin, New Zealand, Merchant. Equilibrium bias-adjustment for bowls.*

Extract from Specification.—In my invention a small hole is bored through the axis of the bowl, and preferably threaded throughout its length, and into this is screwed a metal weight-screw with nicks so as to be worked from either end, the moving of which longitudinally in the hole alters the centre of gravity, and consequently the bias of the bowl.

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

(Specification, 2s. 6d. ; drawing, 1s.)

No. 21765.—11th September, 1906.—CHARLES BLADES COVERDALE STOREY, of Lancaster, England, Mining Engineer, and JOHN ANDREW WAUCHOPE, of Coosheen Cottage, Schull, Cork, Ireland. Improvements in ore-crushing machines.

Claims.—(1.) In an ore-crushing machine of the type described, constructing the crushing-roll frame of sections removably connected together. (2.) In an ore-crushing machine of the type described, providing the travelling crushing-rolls in two or more balanced banks with vacant spaces between the ends of the banks. (3.) In an ore-crushing machine of the type described, mounting the axles of the travelling crushing-rolls in adjustable journal-boxes, substantially as and for the purpose described. (4.) In an ore-crushing machine as claimed in the preceding claims, a trough for holding the ore to be crushed composed of metallic sides and a concrete bottom having a metallic tread. (5.) In an ore-crushing machine as claimed in claim 4, constructing the tread of the trough in the form of annular rings composed of detachable sections. (6.) In an ore-crushing machine as claimed in claim 1, forming the crushing-roll-frame sections with toothed outer edges so as to form a composite gear wheel. (7.) The improved ore-crushing machine described, and illustrated by the drawings.

(Specification, 5s. 6d. ; drawing, 1s.)

No. 21889.—5th October, 1906.—FREDERICK WALLIS STODDART, of Grafton Lodge, Sneyd Park, Bristol, England, Analytical Chemist. Improvements in apparatus for distributing liquids, especially suitable for sewage.

Claims.—(1.) Supporting the distributing troughs by the tops of the corrugations, substantially as described. (2.) Channels with lugs on their edges on which rest the tops of the corrugations forming the troughs, substantially as described. (3.) Apparatus for distributing liquids, substantially as described, and illustrated in the drawings.

(Specification, 3s. 6d. ; drawing, 1s.)