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THE NEW ZEALAND GAZETTE.
[No. 47

thereto and forming angular recesses at the sides of the guides or runners, the dog-wedges or catches arranged in the angular recesses of the containing and guiding straps, and constructed with serrated or toothed vertical gripping surfaces which move inward and parallel to the guides or runners when raised in the straps, the rods arranged in the supporting frame, the wipers fixed thereon, and the rods pivotally attached at one end to the wipers and at the other end to the wedges or catches for the purpose of raising the wedges or catches in their containing and guiding straps, substantially as and for the purposes described. (3.) A safety gear or mechanism for mine skips, cages, and the like, having its several parts constructed, arranged, and operating for the purposes specified, substantially as described, and illustrated in the drawing.
(Specification, 5s. 6d.; drawing, 1s.)

No. 16403.—28th May, 1903.—BENJAMIN CUSHING MUDGE, of Snow’s Falls, Maine, United States of America, Chemist. Improvements in and relating to the manufacture or production of flax-fibre.

Claims.—(1.) Flax-fibre wherein shives, disintegrated and resolved into shive-fibres, are dispersed in the form of shive-fibres through and within the mass of flax-fibre. (2.) The method of rendering flax-fibre free from shives as such which consists in disintegrating the shives which are entangled in the flax-fibre and resolving them into their component fibres, said shive-fibres being dispersed through the mass of fibre. (3.) The method of rendering flax-fibre free from shives entangled therein which consists in treating the mass of fibre with a solvent of the cementitious and non-cellular portions of the shives, thus separating the shive-fibres. (4.) The method of rendering flax-fibre free from shives entangled therein which consists in treating the mass of fibre with an alkaline solvent of the cementitious and non-cellular portions of the shives, thus separating the shive-fibres. (5.) The method of rendering flax-fibre free from shives entangled therein which consists in treating the mass of fibre with caustic soda, separating the shive-fibres thereby, and bleaching the mass with a solution of chloride of lime and sulphate of magnesia.
(Specification, 10s. 6d.)

No. 16405.—28th May, 1903.—SIDNEY TRIVICK, of 76, Birchanger Road, South Norwood, County of Surrey, England, Chemist and Metallurgist. Process for the manufacture of dry sulphates of the alkali metals and the products thereof.

Claims.—(1.) A process for the production of a dry salt and the product thereof, which is composed of one chemical unit of an oxide of one or more of the alkali metals united with not less than four units of sulphuric anhydride, SO₃, and with not more than three chemical units of H₂O, consisting in adding to concentrated sulphuric acid, H₂SO₄, such a quantity of anhydrous salt or salts of the alkali metal or metals as will contain half as many chemical units of the metal or metals themselves as there will be of sulphur in the mixture, heating the mixture to a temperature not exceeding 250° C., granulating the mass by stirring whilst cooling, and subsequently exposing it to a current of warm dry air. (2.) A process and the product thereof, characterized as described in claim 1, omitting the heating of the mixture by an external source of heat, in which the anhydrous salt added to the H₂SO₄ is that of the metal sodium. (3.) A process and the product thereof, characterized as described in claim 2, in which the anhydrous salt added to the H₂SO₄ is NaCl. (4.) A process and the product thereof, characterized as described in claim 1, in which the anhydrous salt added to the H₂SO₄ is that of the metal potassium. (5.) A process and the product thereof, characterized as described in claim 1, in which to the H₂SO₄ is added a salt of ammonium. (6.) A process and the product thereof, characterized as described in claim 1, in which to the H₂SO₄ is added salts of two or more of the metals sodium, potassium, and ammonium.
(Specification, 5s. 6d.; drawing, 1s.)

No. 16407.—29th May, 1903.—WILHELM CONNSTEIN, of 16, Salzufer, Charlottenburg, Kingdom of Prussia, German Empire, Doctor of Medicine and Director. Process for the manufacture of fatty acids from their esters.

Claims.—(1.) A process of decomposition of esters of fatty acids in fatty acids and alcohols, whereof the main feature is that the esters of fatty acids in a medium of acid reaction are subjected to the action of fat-decomposing ferments of plants. (2.) A process of decomposition of esters of fatty acids in fatty acids and alcohols, whereof the main feature is that the esters of fatty acids are converted into an emulsion, and then, in the presence of acid, subjected to the action of fat-decomposing ferments of plants. (3.) A process of decomposition of esters of fatty acids in fatty acids and alcohols, whereof the main feature is that the esters of fatty acids are subjected to the action of fat-decomposing ferments of plants in the presence of acid. (4.) A process of decomposition of esters of fatty acids in fatty acids and alcohols, whereof the main feature is that the esters of fatty acids are converted into an emulsion, and then, in the presence of acid salts, subjected to the action of fat-decomposing ferments of plants.
(Specification, 5s. 6d.)

No. 16427.—2nd June, 1903.—HERMAN CHARLES WOLTERBECK, of 3, Edinburgh Mansions, Howick Place, Victoria Street, London, England, Consulting Chemist. Process for the production of ammonia by synthesis.

Claims.—(1.) The process for the synthetical production of ammonia, consisting in passing air and steam, heated to a temperature between 300° C. and 400° C., and preferably to about 350° C., over iron or other suitable metal offering a large surface and intimate contact, and preferably heated to the same temperature. (2.) The process for the synthetical production of ammonia, consisting in passing air and steam and a reducing gas, such as hydrogen or carbon-monoxide or both, heated to a temperature between 300° C. and 400° C., and preferably to about 350° C., over iron or other suitable metal offering a large surface and intimate contact, and preferably also heated to the same temperature. (3.) The process for the synthetical production of ammonia, consisting in passing air and steam, heated to a temperature between 300° C. and 400° C., and preferably to about 350° C., over iron or other suitable metal offering a large surface and intimate contact, and preferably also heated to the same temperature, and intermittently reducing the oxidized iron or other suitable metal by a reducing gas such as hydrogen or carbon-monoxide or both.
(Specification, 1s. 9d.)

An asterisk (*) denotes the complete specification of an invention for which a provisional specification has been already lodged.

NOTE.—The cost of copying the specification and drawings has been inserted after the notices of each application. An order for a copy or copies should be accompanied by a post office order or postal note for the cost of copying.

The date of acceptance of each application is given after the number.

Extracts from the drawings accompanying the foregoing complete specifications appear at the end of this Gazette.
F. WALDEGRAVE.
Registrar.

Provisional Specifications.

Patent Office,
Wellington, 10th June, 1903.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted as under:—
No. 16393.—12th May, 1903.—JOHN SHEPHERD, of Invercargill, Southland, New Zealand, Farmer. Improvements in and relating to dredging machinery.
No. 16363.—13th May, 1903.—WILLIAM BEAUMONT, of Wanganui, Wellington, New Zealand, Plumber. A combined strainer and aerator for the straining and aerating of milk.
No. 16364.—15th May, 1903.—ROBERT NOBLE ADAMS, of Dunedin, New Zealand, Publisher. Improvements in and relating to pivots for swinging mirrors and the like.
No. 16365.—15th May, 1903.—STEPHEN BEER, of Kye Burn Diggings, New Zealand, Miner. Improved elevator.
No. 16366.—15th May, 1903.—EDWIN WADMAN, of Dunedin, New Zealand, Clerk; Improvements in and relating to shoe and black-lead brushes.
No. 16380.—22nd May, 1903.—JAMES WREN, of Invercargill, New Zealand, Carpenter. Improvement in screws.
No. 16382.—19th May, 1903.—GEORGE JOSEPH SMITH, of Greymouth, New Zealand, Carpenter, and JAMES SCOTT, of Cobden, New Zealand, Farmer. An improved tin opener and cutter.
No. 16383.—23rd May, 1903.—FREDERICK CHARLES GRIFFITHS, of New Plymouth, New Zealand, Plumber. Improvements in skylights.
No. 16384.—20th May, 1903.—ROBERT THOMSON STEWART, of Waikanae, New Zealand, Mining Engineer. Improved school-slate cleaner.
No. 16386.—26th May, 1903.—JAMES AUGUSTUS BOYD, of 15, Barker Street, Wellington, New Zealand, Painter. Improved potato-cleaner.