2148
THE NEW ZEALAND GAZETTE.
[No. 78

attached to its other end, a link depending from the bell-crank, a hollow ratchet behind the brake-beam, a female screw-thread in the same that runs upon the take-up rod in pneumatic-brake apparatus, a chamber for containing the ratchet, said chamber being capable of rotatory motion upon the same, a cover or lid to the chamber, and an arm upon the same that connects with the link aforesaid, the whole designed and operating for the purpose of feeding forward the brake-beam when the piston of the air-cylinder exceeds its predetermined stroke due to wear upon the brake parts, as specified. (3.) In pneumatic-brake mechanism such as is used on the Government railways of New Zealand, in combination, a pneumatic cylinder, a piston and piston-rod in the same, a double-ended pin which supports the outer end of the piston-rod and one of the ends respectively of a push-and-pull rod and a pair of existing front brake-levers, the other ends of the levers being articulated to the screwed take-up rod, a bell-crank operated by the piston through the push-and-pull rod, a link upon one arm of the bell-crank, a hollow ratchet adapted to run upon the take-up rod behind the brake-beam that carries the brake-blocks, a chamber about the ratchet loosely mounted thereon, an arm upon the chamber connecting with the link, a tubular tail-piece, and a pawl within the chamber, all substantially as described and as illustrated, and for the purpose set forth.
(Specification, 4s. 6d.; drawings, 2s.)

No. 15780.—18th December, 1902.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of Edward Holl Miller, Fellow of the Chemical Society, of 81, Chardmore Road, Clapton Common, and Cecil Quennell, Gentleman, of 7, Angel Court, Throgmorton Street, both of London, England). A method for the treatment of refractory ores.*

Claim.—The described process for the treatment of refractory lead-zinc ores consisting in mixing the ore with siliceous matter and pitch (with or without the addition of some lime, according to the silver-value of the ore), forming the mixture into dry blocks, packing the blocks in a furnace with suitable air-spaces, and sprinkling the layers with lime and gradually raising the temperature, whereby substantially the whole zinc-content of the ore is converted into metallic zinc which distills over, and the lead and silver contents of the ore are also converted into the metallic state, in which state they are retained in the residue in the retort and recovered therefrom by melting out.
(Specification, 3s.)

No. 15804.—23rd December, 1902.—ELLIOTT L’ESTRANGE BARTON, of Hawera, New Zealand, Solicitor. Improvements in or relating to electric conductors.*

Claims.—(1.) In electric conductors carried upon poles, metallic means secured to the carrying poles whereby electric contact may be made between the conductors and the poles, and through them to earth, upon the lowering of the conductors, substantially for the purposes specified. (2.) In means for conducting electricity, a wire carried upon poles in electrical connection with earth, metallic cross-bars secured upon the top of the poles and provided with forked ends placed a short vertical distance beneath the wire, substantially as specified. (3.) In means for conducting electricity, a trolly wire suspended from poles in electrical connection with earth, an upwardly extending metallic loop rigidly secured to the wire, in combination with a corresponding loop suspended from a metal rod secured to the pole and into which the first loop is passed so as to be free from contact therewith, but to make contact when the wire is lowered, substantially as and for the purposes specified.
(Specification, 9s. 9d.; drawing, 1s.)

No. 16367.—13th May, 1903.—FRANCIS WILLIAM PAYNE, of Dunedin, New Zealand, Consulting Mechanical Engineer. Improvements in lock nuts.

Claim.—(1.) In lock nuts, the combination of a nut and split threaded and tapered addition, with another nut on said addition for tightening the split portion on to the bolt on which the nut is, and so maintaining nut in any required position, all substantially as shown and described, and on the drawing. (2.) In lock nuts, in combination, a cap or cover fitting any ordinary nut, with a tapered and threaded portion, and a nut on same for tightening and fixing said cap and with it the nut, substantially as set forth. (3.) The method of securing a nut by attaching a cover ending in a split truncated double-threaded end furnished with a tightening-nut, substantially as set forth. (4.) The method of securing a nut by forming a double-threaded trunked portion as part of said nut, said portion furnished with a tightening-nut closing split portion as it descends, all substantially as set forth.
(Specification, 2s.; drawing, 1s.)

No. 16466.—10th June, 1903.—GEORGE ARTHUR GOYDER, of Pirie Street, Adelaide, South Australia, Australia, Analytical Chemist, and EDWARD LAUGHTON, of Currie Street, Adelaide aforesaid, Gentleman. Improved mode of and apparatus for effecting the separation of minerals and extracting some of them as concentrates.*

Claims.—(1.) The treatment of finely divided ores in an acidulated or other suitable solution whereby physico-chemical action in the bath causes the particles of ore to rise to the surface of the solution, deflecting such rising particles in their vertical course upwards, by mechanical means, such as inclined planes, and catching such deflected particles in suitably placed receptacles as they descend, as set forth. (2.) The treatment of finely divided ores in an acidulated or other suitable solution whereby physico-chemical action in the bath causes the particles of ore to rise to the surface of the solution, feeding and moving the finely divided ore in regulated quantities and at a regulated speed through the solution so that the solution shall have every opportunity to act upon the particles of ore and develop gas-bubbles (to which particles of ore will adhere), which will rise towards the surface of the solution, deflecting such rising particles in their vertical course upwards, by mechanical means, and catching such deflected particles in suitably placed receptacles as they descend, as specified. (3.) In the treatment of ores, a shallow tank or vessel which is to be filled with an acidulated or other suitable solution, inclined wings or deflector plates above the floor of the shallow tank or vessel, suitable troughs placed intermediately between the inclined wings or deflector plates, the edges of the troughs underlying the flanks of the deflector plates, as and for the purposes specified. (4.) The combination and arrangement of a shallow tank or vessel, with means for feeding finely divided minerals into one end of the tank, means for moving the fed minerals along the bottom of the tank, inclined wings or deflector plates overlying the bottom of the tank, suitable troughs placed intermediately between the wings or deflector plates, means for causing the concentrates to travel along the troughs, and means for discharging the tailings and the concentrates from the apparatus, as and for the several purposes specified.
(Specification, 5s. 6d.; drawing, 1s.)

No. 16512.—20th June, 1902.—SAMUEL HOUSTON JACOBSON, of 1, Madison Avenue, New York, United States of America, Attorney at Law. Improvements in ventilators.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in the United States of America.]

Claim. — A ventilator consisting of a hood covering an aperture and attached to a base, the face of the hood being on a plane parallel with the base, and a valve pivoted at a point between the two ends of the hood and having two wings lying at an obtuse angle to each other facing the aperture, the valve being so adjusted that when the end of one of its wings rests on the base the other of its wings will occupy a position substantially parallel with the face of the hood.
(Specification, 3s. 6d.; drawing, 1s.)

No. 16594.—6th July, 1903.—JOHN WILSON TONG, of New Plymouth, New Zealand, Building Contractor. An improved siphon and pump.

Claims.—(1.) The combination, in a siphon and pump, of a tubular bucket reciprocal in the short leg of the apparatus, said bucket having an opening in its lower end normally covered by a spherical valve, an operating handle secured to a bridge across the top of said bucket projecting upwardly through a stuffing-box upon the top of said short leg, space being provided to receive the bucket in the short leg above the discharge-opening therefrom, substantially as specified. (2.) The combination and arrangement of parts comprising the improved siphon and pump, substantially as and for the purposes set forth, and as illustrated on the drawing.
(Specification, 1s. 6d.; drawings, 1s.)

No. 16606.—9th July, 1903.—GEORGE OSBORNE, of Tinwald, Canterbury, New Zealand, Farmer. Combined drill, horse-hoe, and ridger.

Claims.—(1.) In an implement such as described, having separate coulters for manure and grain adjustable for depth, substantially as and for the purpose set forth. (2.) In an implement such as described, having gauge-bars carrying horse-hoe tines adjustable for width by means of rack and worm, substantially as and for the purpose set forth. (3.) In an implement such as described, having a plain roller for the discharge of manure, substantially as and for the purpose set forth. (4.) In an implement such as described, having