506
THE NEW ZEALAND GAZETTE.
[No. 18

cylindrical switch, substantially as set forth. (4.) In electrical traction, the combination with a main electrical conductor, and sectional working conductors from which the motor-vehicle directly collects the current, a switch-mechanism located between the main and each of the sectional conductors, such switch-mechanism consisting of a shaft mounted in bearings, a four or more armed tappet-lever carried on the shaft, a cylinder having conducting- and insulating-surfaces also mounted on the same shaft, two brushes in contact with the cylinder, one in electrical connection with the main conductor and the other in connection with one of the sectional conductors, of a locking-device consisting of two lever catches hinged to a fixed part, counterbalancing arms to cause the lever catches to normally engage with the arms of the tappet-lever, a curved striking-plate on the upper end of each lever catch, tappet-pieces on each motor-vehicle to force back the catch-levers, to free the tappet-lever and partially rotate same, the latter lever being again locked automatically by the falling-forward of the catch-levers, substantially as set forth. (5.) In electrical traction, the combination with a main electrical conductor and sectional working conductors, from which the motor-vehicle directly collects the current, of a switch-mechanism located between the main and each sectional conductor, such switch-mechanism consisting of a rotary shaft carried in bearings, a cylinder having conducting- and insulating-surfaces mounted on the shaft, two brushes in contact with the cylinder, one in electrical connection with the main conductor and the other in connection with one of the sectional conductors, an enclosing box having a watertight compartment therein to receive the rotary shaft and parts connected therewith, an extension of the rotary shaft into a second compartment of the box, a four or more armed tappet-lever carried on the shaft in the second compartment, rails above the box arranged to form a slotted conduit into which the armed tappet-lever projects, two lever catches hinged to the box and counterbalanced arms on the catches to cause same to normally and automatically engage and lock the armed tappet-lever, and tappet-pieces on each motor-vehicle to force back the catch-levers and release and partially rotate the armed tappet-lever, the latter lever being again locked automatically by the falling-forward of the catch-levers after the passing of the vehicle-tappets as set forth. (6.) The general arrangement and combination of parts composing my improvements in or connected with electrical traction, substantially as described with reference to the drawings.
(Specification, 10s. 3d.; drawings, 16s.)

No. 12394.—16th February, 1900.—WILLIAM KINGSLAND, of 8, Bream’s Buildings, Chancery Lane, London, England, Electrical Engineer. Improvements in or connected with surface-contact studs for electric traction.

Claims.—(1.) A contact stud for electric traction composed wholly of metal or partly of metal and partly of insulating material, and made in two main parts, one of which fits tightly within the other in the manner of a wedge, and so that it may be withdrawn when required, substantially as described. (2.) The construction and arrangement of contact studs for electric traction substantially as described, and illustrated with reference to the drawings.
(Specification, 2s. 9d.; drawings, 6s.)

No. 12404.—20th February, 1900.—FRANCIS JAMES OLSEN, of Spey Street, Invercargill, New Zealand, Photographer, and EDWARD HENRY WHITMORE, of Don Street, Invercargill aforesaid, Printer. Improved apparatus for filtering water.

Claims.—(1.) In water-filtering apparatus, the combination of two cylinders one within the other, the inner cylinder having superposed compartments containing broken granite, an outer felt cup within the upper part of said inner cylinder receiving a perforated drum containing charcoal, an inner felt cup within said outer felt cup arranged above the drum containing charcoal and receiving a perforated drum containing lime, a felt disc above the lime-drum, a cover through which water to be filtered is supplied, means for securing said cover to the outer cylinder and whereby the felt cups and felt disc are clamped in position, a felt disc at the perforated bottom of said inner cylinder, a chamber beneath it receiving filtered water, and a tap upon the outer cylinder for withdrawing water from the chamber, substantially as specified and illustrated. (2.) The combination in water-filtering apparatus of two cylinders one within the other, the inner cylinder having superposed compartments containing broken granite, a felt cup within the upper part of said inner cylinder receiving a perforated drum containing charcoal, a felt disc above said drum, a cover having an opening to admit water to be filtered, means for securing said cover to the outer cylinder and clamping the felt cups and disc in position, a felt disc beneath the perforated bottom of said inner cylinder, a reservoir beneath said inner cylinder receiving filtered water, and a tap upon the outer cylinder for withdrawing water from said reservoir, substantially as specified. (3.) The combination in filtering apparatus of a cylinder containing broken quartz, a felt cup within the upper part of said cylinder, a perforated drum within said felt cup containing charcoal, a cover over said cup through which water to be treated is admitted, a reservoir for filtered water at the perforated bottom of said cylinder, and a tap for withdrawing water from said reservoir, substantially as specified and illustrated. (4.) In water-filtering apparatus such as described, a cylinder containing filtering-medium, a felt disc above said cylinder, a cover through which water to be treated is admitted, and a “blow-through” pipe from the cover for removing silt from the upper surface of said felt disc, substantially as specified and illustrated. (5.) The combination in water-filtering apparatus of two cylinders one within the other, the inner cylinder containing broken granite, a felt cup within the upper part of said inner cylinder receiving a perforated drum containing charcoal, a felt disc above said drum, a cover having an opening to admit water to be filtered, means for securing said cover to the outer cylinder and clamping said felt cup and said disc in position, a felt disc beneath the perforated bottom of said inner cylinder receiving filtered water, and a tap upon the outer cylinder for withdrawing water from said reservoir, substantially as specified. (6.) The improved apparatus for filtering water consisting of the parts arranged, combined, and operating substantially as and for the purposes described, and illustrated in the drawing.
(Specification, 3s. 9d.; drawings, 8s.)

No. 12409.—21st February, 1900.—HENRY LANGDON SPRING, of 517, Hay Street, Perth, Western Australia, Manufacturer (assignee of Herbert Thomas Rigg, of Bunbury, Western Australia, Carpenter). Improved process of, and apparatus for, the filtro-amalgamation of auriferous ores.

Claims.—(1.) The process of filtro-amalgamation consisting of the maintenance of a superimposed body of ore or matter which by its own weight is made to percolate or filter through a body of mercury so that the auriferous particles may be won, substantially as and for the purposes set forth and described. (2.) The peculiar arrangement of an appliance consisting of an upper chamber of a taper or wedge shape, which proceeds or depends into another lower chamber, and both so arranged and disposed as to cause the ore in the upper chamber to percolate down and through the body of mercury in the power chamber, substantially as and for the purposes set forth and explained, and as illustrated in the drawings.
(Specification, 1s. 6d.; drawings, 3s.)

No. 12410.—21st February, 1900.—HENRY LANGDON SPRING, of 517, Hay Street, Perth, Western Australia, Manufacturer (assignee of Herbert Thomas Rigg, of Bunbury, Western Australia, Carpenter). An improved ball cradle for crushing metalliferous ores.

Claims.—(1.) A crushing trough or cradle having false or replaceable bottoms, and being swung or trunnioned on a transverse shaft or pivot, and having swinging or oscillatory motion imparted thereto, such cradle being in combination with a loose ball as the direct crushing agent, which travels successively from end to end by means of gravitation and its own momentum, substantially as and for the purpose set forth and specified, and as illustrated in the drawings. (2.) The specified crushing trough or cradle, being provided with meshed outlets and fluming for discharging the crushed ores successively at each down-swing of the cradle, and such outlet boxes and fluming being lined with amalgam plates substantially as set forth, and as illustrated in the drawing.
(Specification, 3s. 3d.; drawings, 8s.)

An asterisk (*) denotes the complete specification of an invention for which a provisional specification has been already lodged.

NOTE.—The cost of transcribing the specification, and an estimate of the amount required for copying the drawings, have been inserted after the notice of each application. An order for a copy or copies should be accompanied by a post-office order or postal note for the cost of copying.

The date of acceptance of each application is given after the number.

J. C. LEWIS,
Deputy Registrar.