140
THE NEW ZEALAND GAZETTE.
[No. 2

No. 23684.—7th November, 1907.—GEORGE ENDON DOD, care of C. S. McGhie, Solicitor, of Bazaar Street, Maryborough, Queensland, Australia, Engineer. Improvements in internal-combustion gas-turbines.

Claims.—(1.) In internal-combustion gas-turbines such as referred to, the use of a secondary passage provided with a controlling valve and nozzles, as and for the purposes set forth. (2.) In internal-combustion gas-turbines as claimed in the preceding claim, the arrangement of water-jacketing as shown in Fig. 1, for water-jacketing the more important parts and providing for the expansion. (3.) In internal-combustion gas-turbines, the arrangement of an inlet-valve articulated to the oil-inlet valve so that when the former opens the latter is slightly opened. (4.) In internal-combustion gas-turbines, the combination of a single combustion-chamber, and nozzles with a secondary passage provided with a controlling valve and nozzles
(Specification, 4s. 6d.; drawing, 2s.)

No. 23687.—7th November, 1907.—DAVID ROBERTS and CHARLES JAMES, of Spittlegate Ironworks, Grantham, Lincolnshire, England, Engineer. Improvements in internal-combustion engines.

Claims.—(1.) In internal-combustion engines of the kind described, the employment for operating the oil-feed pump of a cam the face of which is of the shape substantially as described. (2.) In an internal-combustion engine of the kind described, the arrangement wherein the vertical valve in the vaporiser valve-box is mechanically controlled by a cam under the influence of the engine-governor, substantially as described. (3.) An internal-combustion engine provided with a cam for operating the oil-feed pump, and a cam controlled by the governor for operating the vertical valve in the vaporiser valve-box, substantially as described, and illustrated in the drawing
(Specification, 6s.; drawing, 1s.)

No. 23699.—5th November, 1907.—PASCAL MARINO, of 6 Featherstone Buildings, High Holborn, W.C., London, England, Chemist. An improved process for rendering celluloid unflammable and incombustible.

Claims.—(1.) A process for rendering celluloid unflammable and incombustible, consisting in dissolving the celluloid by any suitable solvent, such as those described, adding to the dissolved celluloid one or more mineral salts (insoluble in cold or hot water or alcohol, but soluble in acetic acid or acetic anhydride), the said salt or salts being dissolved in acetic acid or acetic anhydride, or a mixture of both, afterwards adding carbon-tetrachloride, or carbon-tetrabromide, and adding trichloretted nitromethane, and tetranitromethane C(No₂)4, thoroughly mixing and exposing the admixture in a closed vessel to the action of the solvents and their vapours for from ten to twelve hours, again adding to the compound formaldehyde solution, thoroughly mixing and again exposing the said mixture in the closed vessel for a further period of from eight to ten hours, and finally drawing off the liquid from the resulting compact mass of celluloid, and drying the latter, which may then be rolled or moulded as desired, all substantially as described, and in or about the proportions named. (2.) In rendering celluloid unflammable and incombustible, the use of suitable known solvents and one or more mineral salts, insoluble either in cold or boiling water and in alcohol, but soluble in acetic acid and acetic anhydride, also of carbon-tetrachloride or carbon-tetrabromide, trichloretted nitromethane, tetranitromethane C(No₂)4, and formaldehyde solution, substantially as described, and in or about the proportions named
(Specification, 4s. 9d.)

No. 23700.—9th November, 1907.—SIDNEY PERCIVAL EVANS, of Musselburgh, Dunedin, New Zealand, Mechanical Engineer. Improved construction and method of manufacture of rolling-stock wheels.

Claims.—(1.) In the manufacture of built-up metal wheels for rolling-stock, to be subsequently blocked, heated, welded, stamped, and provided with bosses, all compacted together, the substitution of plain rolled bars for the specially thickened bars now used, with short filling-pieces, cut preferably from a rolled bar, and slightly longer than the width of the bars forming the spokes, all substantially as illustrated in the drawing, and as described and as explained. (2.) In combination, in built-up metal wheels, spokes formed of plain-run bent bars, and filling-pieces between same, made slightly longer than the width of said spokes, with the usual bosses, the whole to be heated and welded, pressed, and moulded to form a complete wheel, to be subsequently provided with tires (or rims), all substantially as set forth, and as illustrated in the drawing
(Specification, 2s. 9d.; drawing, 1s.)

No. 23707.—13th November, 1907.—FRANCIS FRASER, of Ingham, Queensland, Australia, Mining Proprietor and Contractor (assignee of James Mazlin, of Herberton, Queensland, Australia aforesaid, Practical Miner). Improvements relating to pick-heads usable with removable points and the like.

Claims.—(1.) In combination with a pick-head having an eye for a handle which can project from the top of said eye, a raised ear located at, or at a predetermined distance from, one end of the eye, and perforated to receive the shank of a removable point, allowing the shank-end to project from a hole located at the socket rear as described. (2.) The pick-head described, having the eye for a handle, and the raised ear having a perforation open at front and rear to form a socket located as shown in Fig. 2. (3.) The pick-head described, having two raised ears, and in each socket perforation open at front and rear, and located as shown in Fig. 3. (4.) A pick-head having an eye for a handle, having a top edge k, and a raised ear j, through which is a socket perforation having an obtuse angle as p. (5.) A pick-head having one or more raised ears, each with a socket perforation, in combination with a removable point the shank of which projects from a hole at the rear of the ear, and has a hole to receive a transverse cottar outside said rear hole.
(Specification, 4s. 9d.; drawing, 1s.)

No. 23708.—13th November, 1907.—JAMES WILLIAMS, of 38 Roslyn Hill, Hampstead, London, England, and 47 Crawford Street, Dunedin, New Zealand, Mining and Mechanical Engineer. Improvements in the arrangement and construction of bearings for propeller-shafts or other shafts operating under water or other liquid.

Claim.—The combination of a bearing for a shaft operating under a liquid, and a collar closely fitting to and turning with and sliding upon said shaft, and retained in elastic contact with said bearing as described. The provision of one or more annular grooves in the bore of said collar is new.
(Specification, 7s.; drawing, 3s.)

No. 23709.—13th November, 1907.—ERNEST JOHN WOOD, of Birnam, Castle Bromwich, juxta Birmingham, Warwick, England, Managing Director, and GEORGE CARSON, of 244 Alliance Avenue, Hull, York, England, Locomotive-driver. Improvements in and relating to axle-boxes.

Claims.—(1.) In axle-boxes for rolling-stock, the combination of a circular front portion, a sloping floor, troughs cast around the upper part of the circular portion, a sink communicating therewith, and a disc on the end of the journal, substantially as and for the purpose set forth, and as shown upon the drawings. (2.) In axle-boxes for rolling-stock, having a circular front portion and a sloping floor, the employment of grooves around the upper part of the front portion of the box, and a thin sheet-metal disc on the journal end, the disc being surrounded near the top by the grooves, which take off lubricant and pass it to a sink above the brass, substantially as described and shown. (3.) In axle-boxes for rolling-stock, the employment of a single radially corrugated disc on the end of the journal, and arranging the same to rotate in a circular part of the box, substantially as and for the purpose set forth, and as shown upon the drawings.
(Specification, 4s.; drawing, 2s.)

No. 23711.—13th November, 1907.—HENRY ANGUS NICHOLSON, of Otatau, New Zealand, Agent. An improved process for bleaching flax-fibre.

Claim.—The improved process for bleaching flax-fibre, the same consisting in treating the fibre first to the action of a solution of tartaric acid and water, and then to the action of a separate solution of sodium-chloride and water, substantially as specified.
(Specification, 2s.)