July 11.] THE NEW ZEALAND GAZETTE. 1471

continuous burning, and of the passage of the heat from one chamber to another, or of the use of one only, or of any desired number of chambers simultaneously. The calcining-chambers, unlike the adjacent furnaces, are not of dual formation, and are each provided with a sloping hearth, communicating with external doors for discharging the calcined pieces, which are conveyed thence into suitable appliances, vessels, or vats for extracting the gold, by either amalgamation, chlorination, leaching, or the like. The object to be attained by constructing the coagulated pieces of tubular form, and of charging the same with an inflammable material or composition, is to assist in the rapid calcination of the pieces, and to facilitate the creation of spaces and passages throughout the material when occupying its jumbled condition within the calcining-chamber, and to insure the perfect suffusion of the heat throughout the mass. The inflammable material used for charging the tubes or channels is not intimately mixed with the coagulated material, but is applied within the tubes in a body, so that it may be subsequently wholly destroyed, which will leave the original passage clear as a channel of communication for the heat subsequently applied. A further advantage possessed by charging the tubes or channels with the inflammable material is the strengthening of the said material prior to the performance of the cutting operation. The inflammable material may consist merely of sawdust associated with bituminous or resinous matter, or other suitable ingredients may be used. During the cutting operation the enclosed inflammable material is prevented from exuding by the formation of a thin skin of earthy matter carried across during each movement of the cutting mechanism. Gold-bearing material in its natural state sometimes resembles clay which has been pugged; for the treatment of such certain modifications would be made in the expressing appliances before mentioned, so as to provide a thin strip of expressed material, or a series of such, which would be made to discharge on to heated plates, and subsequently be divided in their semi-hardened condition by downwardly cutting and piercing appliances, to obtain a tubular formation. The coagulated pieces so produced would be similarly treated as before described by passing on to the heated shaking-tables. By means of this invention the continuous treatment of the pliable material is insured, which results in changing the gold-bearing matter from its soft slimy, pulpy, or tenacious condition into a coagulated and gritty state fit for the extraction processes or final treatment.

[NOTE.—The number and length of the claims in this case preclude them from being printed, and the foregoing extract from the descriptive part of the specification is inserted instead.]

(Specification, 16s.; drawings, 3s.)

No. 13791.—5th July, 1901.—ERNST AUGUST BEHRENS, of the Chemische Fabrik, Hemelingen, Germany, Chemist. Improved process for manufacturing acetic acid.

Claim.—The improved process for manufacturing acetic acid of a high percentage of strength from acetate of lime by entirely or partly dissolving the said salt in acetic acid of at least 60 per cent. strength, decomposing the same by sulphuric acid, and separating the acetic acid produced from the precipitated calcium-sulphate, substantially as described.

(Specification, 4s. 6d.)

F. WALDEGRAVE,
Registrar.

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 notice of each application. An order for a copy or copies should be accompanied by a post-office order or postal notes for the cost of copying.

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

Provisional Specifications.

Patent Office,
Wellington, 10th July, 1901.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted as under:—

No. 13428.—23rd February, 1901.—CHARLES BOOTH, of 50, St. Thomas Street, Bermondsey, London, S.E., England, Merchant (nominee of George S. Wolff, of Philadelphia, Pennsylvania, United States of America, Leather-manufacturer). Improvements in enamelled leather.

No. 13429.—23rd February, 1901.—CHARLES BOOTH, of 50, St. Thomas Street, Bermondsey, London, S.E., England, Merchant (nominee of George S. Wolff, of Philadelphia, Pennsylvania, United States of America, Leather-manufacturer). Improvements in enamelled leather.

No. 13729.—17th June, 1901.—ALBERT ROBERT FOWLER, of 454, Collins Street, Melbourne, Victoria, Merchant (assignee of George Henry Burrows, of 25, North Union Street, Somerville, Massachusetts, United States of America, Machinist). An improvement in incandescent gas-lighting apparatus.

No. 13730.—17th June, 1901.—THOMAS WILLIAM PIERSON, of Petone, New Zealand, Butcher. An improved branding-instrument for carcases.

No. 13751.—20th June, 1901.—ROBERT CALDWELL, of Mount Roskill, near Auckland, New Zealand, Engineer. A cage fire-escape with spring adjustment.

No. 13754.—21st June, 1901.—PETER FERGUSON, of Thames, Auckland, New Zealand, Mining Engineer. An improved automatic amalgamating bullion and mercury trap.

No. 13758.—26th June, 1901.—THOMAS FIRTH, of 5, Martin Street, Wellington, New Zealand, Labourer. Improvements in wheelbarrows.

No. 13759.—24th June, 1901.—SAMUEL RICHARD STEDMAN, of Dunedin, New Zealand, Mechanical Engineer, and JOHN MCNARRY, of Maori Hill, Dunedin aforesaid, Blacksmith. Improvements in traps for rats, rabbits, and the like.

No. 13765.—27th June, 1901.—JOSEPH H. COUPE, of Dannevirke, New Zealand, Clerk. Improved means for use in reversing the rotation of shafting.

No. 13768.—29th June, 1901.—CHARLES ALISTER TROTTER, of Opunake, New Zealand, Blacksmith. An improved method of and appliances for ascertaining distances and calculating altitudes, the same being specially applicable in range-finding for rifles.

No. 13771.—25th June, 1901.—CHARLES LLEWELLYN WATT, Consulting Engineer, ALEXANDER CROW MCGEORGE, and SAMUEL CROW, Dredge-owners, all of Dunedin, New Zealand. An improved automatic tailings-elevator.

No. 13772.—27th June, 1901.—JOHN FREDERIC RUSSELL GWATKIN, of The Peaks, Canterbury, New Zealand, Farmer. Improved apparatus for sowing agricultural seeds.

No. 13773.—1st July, 1901.—GEORGE EDWARD ANDREW, of 539, Bourke Street, Melbourne, Victoria, Broker. Improvements in and relating to the packing of rabbits for freezing and export.

No. 13774.—1st July, 1901.—THOMAS WILLIAM HUGHES, of Kaikoura, Canterbury, New Zealand, Surveyor. Apparatus for utilising waste heat from stoves, furnaces, and the like.

No. 13775.—29th June, 1901.—WILLIAM PETER MCNAIR, of Dairy Flat, Auckland, New Zealand, Farmer. An improved apparatus for straining fencing-wire.

No. 13776.—2nd July, 1901.—ROBERT MCDONALD, of Lumsden, Southland, New Zealand, Blacksmith. Improvements in ploughshares.

No. 13778.—4th July, 1901.—WILLIAM HENRY BALLINGER, of Waring Taylor Street, Wellington, New Zealand, Manufacturer. Improved spouting-bracket.

No. 13780.—5th July, 1901.—ROBERT CASTLES, of Balance, New Zealand, Farmer. An invention for drawing and extracting stumps and the like from the ground.

No. 13781.—5th July, 1901.—EDWIN ANSON SPERRY, of Biwabik, Minnesota, United States of America, Mining Engineer. Improvements in concentrators.

No. 13789.—5th July, 1901.—JOSEPH GAUT, of 63, Renwick Street, Leichhardt, Sydney, New South Wales, Artist. Improvements in firearms.

No. 13790.—5th July, 1901.—HENRY GRASS, of Flowerdale, near Broadford, Victoria, Grazier. An improved hand tool or dropper for pasty material, applicable in distributing phosphorized pollard.

No. 13792.—2nd July, 1901.—LESLIE HUNTER REYNOLDS, of Dunedin, New Zealand, Civil Engineer. An automatic sewage-pump.

No. 13794.—5th July, 1901.—JULIUS DECIMUS TRIPE, of Guyton Street, Wanganui, New Zealand, Medical Practitioner. Improvements in pliers for ear-marking cattle, sheep, pigs, and other similar purposes.

F. WALDEGRAVE,
Registrar.

NOTE.—Provisional specifications cannot be inspected, or their contents made known by this office in any way, until the complete specifications in connection therewith have been accepted.

Letters Patent sealed.

LIST of Letters Patent sealed from the 27th June, 1901, to the 10th July, 1901, inclusive:—

No. 12287.—G. Renner and W. H. Boyens, branding-appliance.

No. 12485.—R. H. Goldworthy, hoe-blade holder.

No. 12496.—J. C. Naismith, straw-elevator for threshing-machine.

No. 12502.—R. Glendining, coat-adjustment. (D. Nable.)