570
THE NEW ZEALAND GAZETTE.
[No. 21

described, a branding-device heated by a current of electricity, a cylinder connected thereto having a piston operable in one direction by the expansion of mercury within the cylinder and by a spring in the other, said piston having a rod connected to a bell-crank lever, one arm of which when the lever is operated passes over a coil of wire arranged as a rheostat controlling the current of electricity passing to the brand, substantially as described and illustrated.

(Specification, 5s. 6d.; drawings, 8s.)

No. 11669.—3rd June, 1899.—JULIUS LAMBERG, of Kilbirnie, Wellington, New Zealand. Mariner. An improved windmill.*

Claims.—(1.) In a windmill, hollow cones arranged in a horizontal plane, with their open ends in the same direction around a frame, so that they may rotate on a vertical driving-shaft, in combination with a structure provided with shutters to admit the wind to or exclude the same from the cones, substantially as set forth. (2.) The improved windmill consisting of parts constructed, arranged, and operating substantially as set forth.

(Specification, 2s.; drawings, 10s. 6d.)

No. 12090.—16th October, 1899.—DANIEL DOOLING, of Hokitika, Westland, New Zealand, Labourer. An improved hand grubber.

Claims.—(1.) In a hand grubber, a fork at one extremity consisting of two divergent prongs tapering to the points, and at the other extremity a fork consisting of two divergent approximately diamond-shaped prongs terminating in sharp points, the inner edges of such prongs being bevelled so as to form a cutting-face, substantially as set forth. (2.) The improvement in hand grubbers consisting of parts constructed and arranged substantially as set forth.

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

No. 12136.—30th October, 1899.—ROBERT ST. GEORGE, of Otahuhu, Auckland, New Zealand, Blacksmith. An improved convertible plough.*

Claim.—Instead of having holes only for bolts to keep the mouldboard or breast in position in plough-frames, I have the bolt-holes slotted or bifidated, so that by the slackening of the nuts on the bolts the mouldboard or breast can be released, easily removed, and another form of mouldboard or breast substituted in its place; the same principle being applicable to all ploughs, right hand or left, single, double, also to disc harrows, ploughs, shovels, and agricultural implements of any other description of a like character, as substantially set forth in specification.

(Specification, 1s. 9d.)

No. 12173.—13th November, 1899.—MEYER JOSEPH DAVIDSON, of 29, Vestergade, Copenhagen, Denmark, Civil Engineer. Improved means for pulverising mineral ores, or Portland cement or materials for making same, or for pulverising and mixing Portland cement or materials for making cement.

Claims.—(1.) The pulverising of mineral ores, or Portland cement or materials for making the same, or the pulverising and mixing of Portland cement or of materials for making cement, by the use, substantially in the manner described, of hard pebbles in a horizontally arranged tube or long cylindrical or conical chamber, which is suitably actuated and is fed with the material to be treated so as to operate in a practically continuous manner. (2.) For the purpose specified, the improved machine substantially as described and illustrated.

(Specification, 5s.; drawings, 16s.)

No. 12348.—31st January, 1900.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of Chester Ives, of Lurgan House, Wolsey Road, East Molesey, Surrey, England, Journalist). An improved process for the treatment of gelatine, glycerine, and bichromate of potash to obtain therefrom a substance of rubber- or gutta-percha-like character.

Claims.—(1.) The process described for producing from a composition of gelatine, bichromate of potash, and glycerine, a substance of rubber- or gutta-percha-like character, which consists in using and mixing the said ingredients in an anhydrous condition, substantially as described. (2.) The process of producing from a composition of gelatine, glycerine, and bichromate of potash a substance of rubber- or gutta-percha-like character, which consists in mixing the ingredients in an anhydrous state, whereby the chemical action set up between the bichromate of potash and the gelatine is sufficiently inactive to allow time for moulding or otherwise causing the composition to assume the shape of the desired product before the chemical action has advanced so far as to prevent the perfect adhesion of the molecules of the composition, moulding the composition under pressure, and heating it while under pressure to a temperature of from 200° to 300° Fahr., substantially as described.

(Specification, 2s. 6d.)

No. 12349.—31st January, 1900.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of William Adolph Koneman and William Henry Hartley, both of 23, Moorfields, London, England, Civil and Mining Engineers). Improvements in furnaces for roasting ores and the like.

Claims.—(1.) A furnace for roasting ores and the like, in which the heating medium is passed through the material to be treated, and is abstracted by means of flues communicating with a suction-chamber, substantially as and for the purpose described. (2.) A furnace for roasting ore and the like, in which the course of the heating-medium through the material to be treated can be changed by means of valve-controlled flues communicating with the suction-chamber, in the manner and for the purpose described. (3.) In an ore-roasting furnace, an ore-chamber communicating with a flame-chamber and an exhaust- or vacuum-chamber by means of valve-controlled passages. (4.) In an ore-roasting furnace of the kind described, the combination with a suction-chamber such as D, and flame-chamber such as B, of an ore-chamber such as C, having valve-controlled, upwardly inclined flues B¹, C³, in its side walls. (5.) An ore-roasting furnace of the kind decribed, comprising a central suction-chamber placed between two ore-chambers, each of which is heated by one or more flame-chambers having separate fire-chambers, substantially as described. (6.) In an ore-roasting furnace, an exhaust-passage, comprising a series of pockets such as E¹, and a succession of rows of inclined baffle-plates such as E³, for the purpose described. (7.) In an ore-roasting furnace, the combination with a suction-chamber such as D, of an exhaust-passage E, baffle-plates E³, pockets E, screens F¹, and an exhauster G, substantially as described. (8.) In an ore-roasting furnace having an ore-chamber, a flame-chamber, and a suction- or exhaust-chamber suitably connected one with the other, a passage-way for trams or the like, and discharge-openings such as C5, substantially as described. (9.) In an ore-roasting furnace of the kind described, a suction-chamber such as D, having a bottom in the form of two inclined planes, substantially as and for the purpose described. (10.) The complete ore-roasting furnace substantially as described, and illustrated in the drawing.

(Specification, 6s. 3d.; drawings, £1 1s.)

No. 12369.—8th February, 1900.—RALPH BROWN, of 42, Elizabeth Street, Sydney, New South Wales, Manufacturer. An improved wire-strainer.

Claims.—(1.) A wire-strainer made of metal, and composed of one piece, having a base such as A, and on one side of said base A a prong such as B, which has two arms such as B1 and B2, with two points projecting in opposite directions such as B3 and B4; also, on the same side of the base A as the prong B, but at the end thereof, is a hook such as C to hold the tightened wire, and thus is produced a self-holding wire-strainer to be used between the posts, as described, and illustrated in the drawings. (2.) In a lever such as E, having handles such as E1, and clips such as E2 and E3, to grip the base A of the strainer so as to hold it securely, as described and explained, and illustrated in the drawings.

(Specification, 2s. 9d.; drawings, 8s.)

No. 12372.—8th February, 1900.—UNITED SHOE MACHINERY COMPANY, of Paterson, New Jersey, United States of America, a corporation organized under the laws of said State of New Jersey, and having its principal place of business at 111, Lincoln Street, Boston, Massachusetts, United States of America (assignees of Edwin Francis Mower and Peter Amable Coupal, both of Boston aforesaid, Inventors). Improvement in stitch forming and finishing machines.

Claims.—(1.) The combination with stitch-forming and stitch-separating mechanisms of means for adjusting the stitch-forming mechanism to vary the length of stitch, and means to adjust the stitch-separating mechanism relatively to and simultaneously with the adjustment of the stitch-