1544
THE NEW ZEALAND GAZETTE.
[No. 71

No. 13806.—11th July, 1901.—FRANCIS JAMES ODLING, of 2, Princes Walk, Princes Bridge, Melbourne, Victoria, Mining Engineer; and WILLIAM JAMIESON, of Broken Hill Chambers, Melbourne aforesaid, Gentleman. An improved process for magnetically separating pulverised ores, sulphide or otherwise, from their gangue or from each other.

Claims.—(1.) In the described process, a chamber within which air heated to the requisite temperature is maintained, and through which pulverised ore is rapidly passed to render the desired particles thereof which are susceptible to magnetic influence magnetic, combined with a water-bath for cooling the pulverised ores immediately after leaving the said chamber, substantially as and for the purpose described. (2.) In the described process, heating the pulverised ore by allowing it to fall or pass in a shower through a chamber, the side wall or walls of which imparts heat to it by the wall being surrounded by a furnace, and said chamber having a distributor at its top or feed end, and, when requisite, a water-well or bath at its bottom or discharge end, substantially as described and shown. (3.) The described process, consisting in heating pulverised ores rapidly by aid of heated air within a chamber, then immersing the heated ores in a cold-water bath, then, if not previously sized, passing them through a sizing-machine, and afterwards separating the magnetically attractable metals by aid of a magnetic separator, substantially as and for the purpose described. (4.) The described process, consisting in pulverising ores, then heating them to the requisite temperature within a heated chamber, then again allowing the ores to cool, then passing them through a sizing-machine if not previously sized, and finally separating the magnetically attractable portions by a magnetic separator machine, substantially as and for the purpose described.
(Specification, 5s. 6d.; drawings, 1s.)

No. 13817.—11th July, 1901.—BENJAMIN STANLEY NICHOLLS and JOHN HERBERT NICHOLLS, both of Auckland, New Zealand, Range-makers. An improved fire-grate for stoves and ranges.

Claims.—(1.) The movable grate adjusted so that its inner ends shall in a simultaneous movement turn on the projection at back of stove or range while its front ends engage and move upwards or downwards with the front bars for the purpose set forth, substantially as described and illustrated. (2.) The front bars, with openings to hold outer ends of fire-grate, and having on the tops of their outer bars projecting pins or pieces to engage lugs on stove or range for the purpose set forth, substantially as described and illustrated. (3.) In combination, the movable fire-grate, inwardly adjusted to projection and outwardly connected to front bars of stove or range, said front bars having projecting pins or pieces to engage lugs fixed to side of stove or range and openings to hold outer ends of fire-grate, said pins or pieces, said lugs, and said projection all for the purpose set forth, substantially as described and illustrated.
(Specification, 2s. 9d.; drawings, 1s.)

No. 13818.—16th July, 1901.—WILLIAM HENRY HARRISON, of 27, Fitzroy Street, Sydney, New South Wales, Metallurgist. Improvements in electro-amalgamation for the recovery of gold, silver, and mercury from crushed ores.

Claims.—The cathode cylinder, and the anodes in conjunction therewith, as and for the purposes stated; the silver- or mercury-well, and the copper cylinder working therein, as and for the purposes named; the application of an electrolytic current for this invention only, as described; the anodes for battery sands; the scraper; and the use of the chemical reagents named therein as cleansing agents, and not as solvents of gold or silver. I am not confined to shapes or sizes, but I claim the within-named invention substantially as described.
(Specification, 5s. 6d.; drawings, 2s.)

No. 13819.—16th July, 1901.—JAMES BARTLETT, of Blenheim, New Zealand, Decorator. A composition for destroying the action of the grease in scrim upon wall-papers secured thereto.

Claim.—A composition for destroying the action of grease in scrim upon wall-papers secured thereto consisting of a composition of carbonic acid, ammonia, Condy’s fluid, and water, mixed together in the proportions specified, and added to the paste used for fastening the paper to the scrim, as set forth.
(Specification, 1s. 3d.)

No. 13820.—18th July, 1901.—WILLIAM KINGSLAND, of 8, Bream’s Building’s, Chancery Lane, London, England, Electrical Engineer. Improvements in or connected with electric switches having intermittent or step-by-step motions.

Claims.—(1.) In electric switches to which it is required to communicate intermittent or step-by-step motions, a spindle capable of being rocked in bearings by an operating arm or equivalent fixed thereto, which arm may be automatically brought to and held in a normal position by a counterweight or equivalent, and capable of being moved therefrom in either direction for a regulated distance, and an arm or disc fixed on the spindle to carry a freely suspended or pivoted double-ended pawl, suitably balanced, in combination with an intermittent wheel, loosely mounted on the spindle, or carried by a separate co-axial spindle, the intermittent wheel having two sets of ratchet teeth sloping in opposite directions and arranged in different planes, the movable switch-member being connected directly or indirectly to the intermittent wheel, so that when the arm is rocked the balanced or counterweighted pawl engages one or other of the sets of ratchet teeth according to the direction of motion given to the operating arm, thereby causing the intermittent wheel and the movable switch-member to be moved through a defined angular distance of travel, the action being then repeated in either required direction, substantially as set forth. (2.) In electric switches to which it is required to communicate intermittent or step-by-step motions, connecting the movable member of a switch, directly or indirectly, to an intermittent wheel mounted upon a spindle, and capable of being revolved, the wheel being formed with two sets of ratchet teeth sloping in opposite directions and arranged in different planes, in combination with an arm or disc mounted co-axially with the intermittent wheel and capable of receiving partial revolution by an operating arm or equivalent, the disc having a crank-pin or stud from which is suspended a ring encircling the intermittent wheel, there being oppositely arranged detents projecting in different planes from the inner circumference of the ring, so that one detent can operate upon one set of teeth, or the other detent upon the other set of teeth of the intermittent wheel, to partly rotate same and the switch therewith, according to the direction in which the disc is rocked by the operating arm, the latter being normally brought to and maintained in a central position, and its motion limited in either direction by stops, substantially as set forth. (3.) In tappet-operated electric switches, particularly applicable for the purposes of electrical traction, and to which it is required to communicate intermittent or step-by-step motions, mounting the tappet-operated arm upon a spindle carried in bearings, the arm being automatically brought to a normal position by a counterweight or equivalent, and capable of being rocked from thence in either direction for a distance limited by stops, and an arm or disc fixed to the said spindle and carrying a stud from which is suspended a ring having detents or pawls, one projecting from each side internally and in different planes, in combination with an intermittent wheel located within the ring and having two sets of ratchet teeth sloping in opposite directions and arranged in different planes, the wheel being loosely mounted upon the aforesaid spindle or upon a separate co-axial spindle, and being directly or indirectly connected with a cylindrical switch so that when the tappet-arm is rocked the ring-shaped pawl is brought into engagement with one or other set of the ratchet teeth by gravity, and the switch is moved through the required angular distance, after which the tappet-arm is automatically returned to its normal position, the direction of motion of the switch corresponding to the direction of motion given to the tappet-arm, substantially as set forth. (4.) In electric switches to which it is required to communicate intermittent or step-by-step motions, the combination and arrangement of the mechanism therefor, constructed, applied, and acting substantially as and for the purposes described with reference to the drawings.
(Specification, 9s.; drawings, 1s.)

No. 13821.—18th July, 1901.—OESTERREICHISCHE GASGLÜHLICHT UND ELECTRICITÄTSGESELLSCHAFT, of 4, Schleifmühlgasse, Vienna, Austria (assignee of Dr. Carl Auer von Welsbach, of 4, Wiedener Hauptstrasse, 69, Vienna aforesaid, Chemist). Improvements in supports for osmium filaments.

Claims.—(1.) A support for osmium filaments composed of sintered or fritted refractory oxide, non-adherent to incandescent osmium and chemically indifferent thereto, substantially as described. (2.) A support for osmium filaments composed of a sintered or fritted mixture of refractory oxides, non-adherent to incandescent osmium and chemically indifferent thereto, substantially as described. (3.) A support for osmium filaments composed of a sintered or fritted mixture of rare-metal oxide and other refractory oxide, substantially as described. (4.) A support for osmium filaments composed of a sintered or fritted mixture of rare-metal oxide and magnesia, substantially as described. (5.) A support for osmium filaments composed of a sintered or fritted mixture of thorium-oxide and other refractory oxide, substantially as described. (6.) A support for osmium filaments composed of a sintered or fritted mixture of thorium-