Feb. 23.] THE NEW ZEALAND GAZETTE. 609

through the layer of liquid to a point within the same, whence they are in a suitable manner continuously carried away, substantially as described with reference to the drawings. (2.) In centrifugal separating apparatus of the kind described in claim 1, a hollow shell centrally arranged at the bottom of the bowl and provided with cogs on its outer periphery, a shaft passing up through said shell and the hollow shaft of the bowl, and driven at greater or less speed than said hollow shaft, a cross-piece carried by said shaft (e), spindles mounted on said cross-piece, and scoop-discs carried by said spindles, which also carry cog-wheels gearing in the teeth on aforesaid shell, substantially as and for the purpose specified. (3.) In centrifugal separating apparatus of the kind described in claims 1 and 2, the combination of a partition placed immediately under the scoop-discs, said partition being provided with a central opening, in order that the solid substances caught up by the scoop may, when these latter occupy their position nearest the centre, be loosened from the scoop by action of the centrifugal force as well as owing to their own specific weight, and thus be thrown down through the central opening to the chamber under the partition, and thence through a bottom opening to a suitable receptacle, substantially as described and illustrated by the drawings. (4.) A centrifugal separating apparatus constructed, combined, and arranged, and having its parts adapted to operate substantially as described with reference to the drawings, and for the purpose specified.
(Specification, 7s. ; drawing, 1s.)

No. 19006.—26th January, 1905.—GEORGE FREDERIC BRYANT, of Christchurch, New Zealand, Manufacturer. Improvements in or relating to racing or training sulkies.

Claims.—(1.) In a sulky of the kind specified, a hammock-like device that is suspended from the sulky body below the seat, substantially as specified. (2.) In a sulky of the kind specified, a pair of steel straps attached at one end to a cross-piece in the sulky body, each having a semicircular curve and inclining downwards towards another curve having a greater radius than the first and then continued upwards perpendicularly to attach to the sulky body below the seat, and battens placed across the straps, substantially as described and illustrated, and for the purpose set forth.
(Specification, 1s. 6d. ; drawings, 1s.)

No. 19016.—1st February, 1905.—JOHN HINDMARSH, of Napier, Hawke’s Bay, New Zealand, Merchant. Improvements in or relating to screws, nails, and the like.

Claims.—(1.) In screws, nails, and the like, a passage formed centrally downwards from the head and emerging to one side, in combination with a pointed pin adapted to enter the passage, and when driven therein for its pointed end to emerge from and project outwards from the side thereof, substantially as and for the purposes set forth. (2.) In screws, nails, and the like, a passage formed centrally downwards from the head, and branch passages from the bottom end thereof extending outwards to opposite sides, in combination with a double-pointed or split pin, the points of which are adapted to emerge through the respective side-passages in the screw or nail, and to project outwards therefrom when the pin is inserted and driven into the passage, substantially as and for the purposes specified. (3.) The improvements in or relating to screws, nails, and the like, substantially as described and explained, as illustrated in the drawings, and for the several purposes set forth.
(Specification, 4s. ; drawings, 1s.)

No. 19019.—2nd February, 1905.—ALFRED SMALLWOOD, of 52, Gracechurch Street, London, Middlesex, England, Metallurgist. Improvements in the generating and applying heat for steam-boilers, furnaces, and the like.

Claims.—(1.) The described combination for generating heat, consisting of a fire-grate, a combustion chamber, and a flue or heat chamber, the latter of which is divided from the combustion chamber by an arch or partition having extensions or projections which extend or project into the combustion chamber, thereby forming a heat accumulator, absorber, retarder, and circulator, the incandescence of which is assisted by the transmission thereto of heat from the flue or heat chamber, substantially for the purpose described. (2.) The described combination for generating and utilising heat, consisting of a fire-grate, a combustion chamber, and a heating or annealing chamber, the latter of which is divided from the combustion chamber by an arch or partition having extensions or projections which extend or project into the combustion chamber, the latter of which is also continued up and around the heat chamber, thereby forming a heat accumulator, absorber, retarder, and circulator around the heating chamber, the incandescence of which is assisted by the transmission thereto of heat from the inside of the heat or annealing chamber, substantially for the purpose set forth. (3.) The described arrangement for generating and utilising heat in connection with close annealing furnaces, consisting of a fire-grate, a combustion chamber, and a hermetically sealed heat or annealing chamber, the space or flue around which is connected with the combustion chamber, in combination with one or more cooling chambers communicating by doors with the heating chamber, and a means whereby the articles, being annealed, can be conveyed from one chamber to another without the necessity of opening any or either of the chambers to the external atmosphere, substantially for the purpose set forth. (4.) The described arrangement for generating and utilising heat in connection with furnaces, consisting of a fire-grate, a combustion chamber, and a heat chamber, the latter of which is divided from the combustion chamber by an arch or partition, which forms a heat accumulator, absorber, retarder, and circulator around the heating chamber, the incandescence of which is assisted by the transmission thereto of heat from the heat chamber, in combination with a second heating chamber having a space or flue surrounding same, which is connected with the first heat chamber, substantially for the purpose set forth. (5.) The combination with a fire-grate of a combustion chamber and a flue or heating chamber, the latter of which is divided from the combustion chamber by an arch or partition having extensions or projections which extend or project into the combustion chamber, thereby forming an internal heat accumulator, absorber, retarder, and circulator, the incandescence of which is assisted by the transmission thereto of heat from the flues, and which, together with the combustion chamber and flues, are all contained within the ordinary tube or tubes of the boiler, substantially for the purpose set forth. (6.) The combination with a fire-grate of a combustion chamber formed of material which is capable of becoming incandescent, and which is provided with extensions or projections which extend or project therefrom into the combustion chamber in such a manner as to form a heat accumulator, absorber, retarder, and circulator, substantially for the purpose set forth.
(Specification, 14s. ; drawings, 5s.)

No. 19020.—2nd February, 1905.—JAMES THOMAS HUNTER, of Queen’s Chambers, Wellington, New Zealand, Registered Patent Agent (nominee of Budd John Jones, of 555, East 45th Place, Chicago, Illinois, United States of America, Electrical Engineer). Improvements in apparatus for supplying current to electrically propelled vehicles.

Claims.—(1.) Means for supporting and insulating overhead and like electric conductors in which the insulator is carried upon the upper surface of a supporting arm or bracket, and the conductor suspended from the insulator below the arm or bracket, substantially as and for the purpose set forth. (2.) An insulator for supporting devices of overhead and like electric conductors, having a base capable of lateral adjustment upon the upper surface of the supporting arm or bracket, and adapted to carry a supporting or messenger wire from which the electric conductors can be suspended, as set forth. (3.) Suspending the overhead conductors of electric railways from insulators by means of a supporting or messenger wire and a plurality of flexible connections between said messenger wire and the conductors, as for and for the purpose set forth. (4.) A supporting device for electric conductors, comprising a supporting arm or bracket, an insulator mounted upon the upper surface of said arm or bracket, and a conductor suspended from said insulator, all constructed, arranged, and adapted for use in a manner substantially as described, and as shown in the drawings. (5.) For use with overhead electric conductors, a hinged strain or steadying arm secured at one end to the conductor, and at the other to an insulated support, substantially in the manner described, and as shown in the drawings.
(Specification, 9s. 6d. ; drawing, 1s.)

No. 19021.—2nd February, 1905.—DAVID WILLIS ADAMS, of 1210, Niagara Street, Buffalo, New York, United States of America, Manufacturer. Improvements in fire-proof curtains.

Claims.—(1.) A fire-proof curtain composed of a series of slats provided on one side with strips having raised portions containing guide slots, and on their opposite sides with projections which engage with the slotted strips of an adjoining slat. (2.) A fire-proof curtain composed of a series of slats, each of which, except the lowermost one, is provided on its front side with separate strips having raised portions containing guide slots, and each of which slats, except the uppermost one, is provided on its rear side with