SEPT. 23.] THE NEW ZEALAND GAZETTE. 2441

No. 26170.—28th June, 1909.—ROBERT MCGAFFIN, of Hastings, New Zealand. Improved means or apparatus for grinding or dressing the beating-bars of flax-stripping drums.

Extract from Specification.—The action of my said invention is as follows: Having securely fixed the stone i or the file j in either the stone-holder or the file-holder, as the case may be, by the means described, and having set the stone-holder or the file-holder, as the case may be, at one or other end of the worms e1, e2, I place the slotted frame a carrying the travelling-frame b and the stone-holder or file-holder aforesaid, as the case may be, in position above the drum B by slipping the ends d1 d1 of the bolts d d through the eye-bolts o o bolted on to the chairs C C (having, of course, previously so adjusted the said bolts d d relatively to the said frame a as that the latter shall be at a height above the drum sufficient to allow the stone i or the file j in the stone- or file-holder, as the case may be, to bear at the proper angle upon the beating-bars); at the same time I place or draw the pins a2 a2 within the forks m1 m2 of the brackets m m, and then, by means of the levers n1 n2, lock the slotted frame securely in position, so that the stone or the file, as the case may be, carried thereon shall bear at the proper height and angle upon the beating-bars of the aforesaid drum. The angle of the stone or of the file to the beating-bars can be varied by screwing up or down the bolts d d and fixing them in position by means of the lock-nuts d2 d2 and d3 d3, the coiled springs k1 k2 automatically producing a corresponding adjustment of the frame at that end thereof. The said frame a carrying the travelling-frame and stone- or file-holder having been thus securely mounted and fixed in position over the drum of the stripper, the said drum is caused to revolve at a rapid rate. By this means the beating-bars on the said drum are successively brought beneath and against the cutting-face of the stone or of the file, as the case may be. At the same time the workman turns the crank g on the cog f2, which cog engaging with the cogs f1 f3 sets the latter in motion and thereby causes the worms e1 e2 to revolve and so gradually to carry the stone-holder or the file-holder, as the case may be, and with it the stone or file thereon respectively, from one side of the frame a to the other. Then, on the workman turning the crank g in the reverse direction, the stone-holder or the file-holder, as the case may be, is, by the means and in manner aforesaid, caused to travel back to the side of the frame from which it started, and so on. The stone or file, as the case may be, is thus caused to travel and operate from end to end of the said beating-bars as many times as may be necessary to grind or dress them all to an equal and uniform extent and to a uniform angle or bevel. When it is desired to present a fresh portion of the surface of the stone or file, as the case may be, to the work in hand the workman simply adjusts the set-screw b1 by means of the crank b2, and thus causes the travelling-frame b to move up or down the slotted frame, as the case may be. When the work is finished the drum B is stopped and the workman throws the levers n1 n2 out of action and then lifts or draws the frame off the said drum.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, £1.)

No. 26194.—7th July, 1909.—ALFRED JAMES, of 2 Broad Street Place, London, England, Mining and Metallurgical Engineer (assignee of Andrew Swan, of 16 Felix Avenue, Crouch End, London, England, Draughtsman). Improvements in the lixiviation of ores and the like.

Claims.—(1.) The introduction of waste gases directly into the solutions employed, so as to heat same, and also to effect the more efficient circulation and agitation of such solutions and of the ore-pulp or the like. (2.) The use of waste gases in agitators acting on the principle of the Pohle air-lift or Brown agitator for the purpose of effecting agitation and improving extraction. (3.) The introduction of heated compressed air directly into the solutions employed so as to heat same, and also to effect the more efficient circulation and agitation of such solutions and of the ore-pulp or the like. (4.) In processes for the agitation of solutions, pulp, and the like by compressed air, the heating of the compressed air prior to its application to the pulp, for the purpose of effecting a saving in the consumption of compressed air, and for improving extraction by heating the solutions.

(Specification, 2s.)

No. 26242.—14th July, 1909.—WILLIAM ASHTON CHAMBERS, Builder, and WILLIAM HERBERT BOOTH, Engineer, both of Waipukurau, New Zealand. Improved means for the production of gas from hydrocarbon oils.

Claims.—(1.) In means for the production of gas from hydrocarbon oils, in combination, a carburetting-chamber, a tray surrounding the bottom portion of the chamber, means for passing a current of hot water or air through such tray, an air-pipe leading into the carburetter and provided with a number of perforated branches extending along the bottom thereof, means for introducing oil into the chamber and for maintaining it at a constant level, and a gauze screen extending across the upper portion of the chamber, substantially as and for the purposes specified. (2.) The general arrangement, construction, and combination of parts in our improved means for the production of gas from hydrocarbon oils, substantially as described and explained, as illustrated in the drawings, and for the several purposes set forth.

(Specification, 3s. 3d.)

No. 26288.—23rd July, 1909.—BENJAMIN TREWHELLA and WILLIAM TREWHELLA, trading as “Trehella Brothers,” at Trentham, Victoria, Australia; Engineers and Ironworkers. Improved horse-power winch.

Claims.—(1.) In a horse-power winch, and in combination, a vertical winding-drum operated through the medium of a toothed-gear train by a grooved pulley adapted to be rotated in either direction by animal-power. (2.) In a horse-power winch, and in combination, a vertical winding-drum operated through the medium of a double-pinion toothed-gear train by a grooved pulley adapted to be rotated in either direction by animal-power. (3.) In a horse-power winch as described, a winding-drum having an eccentric on its shaft journalled in the frame, a lever for rotating said eccentric, and a toothed wheel on said drum gearing with the gear-train.

[NOTE.—Here follow six other claims.]

(Specification, 5s. 6d.)

No. 26291.—26th July, 1909.—HARRY WILSON DAVIES, of 139 Adelaide Road, Wellington, New Zealand, Plumber. Improvements in acetylene-gas generators.

Extract from Specification.—According hereto the generating-chambers, which extend downward from the top of the gasometer, are increased in length and of the same diameter throughout and open at the bottom. The depth of the cylinders used for supporting the carbide-holders, and having open bottoms and closed tops, is also increased, thus enabling the carbide to be placed in a much lower position in the generating-chambers. A specially constructed frame for holding carbide-canisters having perforated peripheries is adapted to be placed within the said cylinders, and supported by a shelf within the said cylinders, near the bottom end thereof.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

(Specification, 6s.)

No. 26305.—28th July, 1909.—JAMES THOMAS HUNTER, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of the Enfield Cycle Company, Limited, Manufacturers, of the Enfield Works, Redditch, Worcestershire, England, and Walter Johnson, Cycle-painter, of 8 Park Road, Kenilworth, Warwickshire, England). Improved apparatus for painting or producing lines on the frames or other parts of velocipedes, motor and other vehicles, and the like.

Claim.—The improved apparatus for painting or producing lines on the frames or other parts of velocipedes, motor and other vehicles, and the like, including the means for guiding the painting-devices and the arrangements whereby such means may, where desirable, be adapted to the frame, tubes, forks, or mudguards of a bicycle, or to different forms or designs of bicycles; also the means whereby variations in the nature of the design may be made, and the entire operation carried through in a satisfactory and convenient manner.

(Specification, 8s.)

No. 26306.—28th July, 1909.—MUREX MAGNETIC COMPANY, LIMITED, of 55 and 56 Bishopsgate Street Within, London, England (assignees of Alfred Arthur Lockwood, of 12 Minories, London, England, Chemist). Treatment of ores and carboniferous earths, and to the treatment of oils for this purpose.

Claims.—(1.) The treatment of ores or the like with oily liquids which contain minute quantities of such metallic compounds as are insoluble in water and alkaline solutions, substantially as described. (2.) Treating oily liquids to render