Aug. 8.] THE NEW ZEALAND GAZETTE. 2569

vehicle, lever-handles on the shafts, a rod connecting the lever-handles, and handles on each end of the connecting-rod, substantially as set forth. (8.) In apparatus for the purpose described, a hub having a flange at one end, a washer screwed upon the other end of the hub, and layers of chrome leather arranged side by side around the hub, secured together by wires and having their outer edges cut to the contour of the rails, substantially as set forth. (9.) In apparatus for the purpose described, rods square in section, curved at their ends, and secured to the vehicle, brackets with square holes fitted slidably on the rods, and brushes fixed to the brackets, substantially as set forth.

(Specification, 5s. 3d.; drawing, 1s.)

No. 21658.—17th August, 1906.—JOHN ANDERSON, of Moray Place, Dunedin, New Zealand, Engineer and Brassfounder. Improved solid-cased ball-valve.

Claims.—(1.) In ball valves, the combination of the valve-facing being secured in its place by a screw-cap with a solid-ended outer casing that is capable of being unscrewed for renewal or inspection of the valve or seating, and so that both are brought into the best position for such purposes, all substantially as shown on the drawing, and as described and explained. (2.) In ball valves, in combination, a valve-facing held in its position by a screwed cap with a solid-ended casing, so that both valve and seating must be exposed for inspection and are in good position for same, all substantially as set forth.

(Specification, 2s. 6d.; drawing, 1s.)

No. 21679.—23rd August, 1906.—JOSEPH AUSTEN SAWWARD, of Victoria, British Columbia, Canada, Sawmill Proprietor. Loading and unloading lumber from trucks.

Claims.—(1.) As a means for transferring lumber from a two-wheeled truck on to supports, the combination with a two-wheeled truck of supports on to which the lumber is to be deposited, one of which supports is higher than the other, and the mean height of which supports is greater than the mean height of the under-side of the lumber on the truck from the ground, and means for increasing the mean height of the lumber on the truck to over the mean height of the supports. (2.) As a means for transferring lumber from a two-wheeled truck on to supports or trestles, the combination with a two-wheeled truck of supports on to which the lumber is to be deposited, one of which supports is higher than the other, and the mean height of which supports is greater than the mean height of the under-side of the lumber on the truck from the ground, and means interposed between the truck-frame towards the lower support and the under-side of the lumber, for increasing the space between the under-side of the lumber and that end of the truck-frame, whereby the mean height of the under-side of the lumber-truck from the ground is elevated above the mean height of the supports. (3.) As a means for transferring lumber from supports on to a truck or from a truck on to supports, the combination with a two-wheeled truck having cross-bearers upon which the load rests when on the truck, of an elevating bolster extending across the width of the truck adjacent to one of the end cross-bearers thereof, the thickness of such bolster being approximately that of the cross-bearers of the truck, and the width relatively greater, and means for turning said bolster on its edge so that its greater dimension is interposed between the upper-side of the truck and the under-side of the load. (4.) In a device of the class described, the combination with a two-wheeled truck of a bolster extending across the width of the truck-frame, the width of such bolster being relatively greater than its thickness, and means for turning such bolster on its edge. (5.) In a device of the class described, the combination with a two-wheeled truck of a bolster extending across the width of the truck, having a width relatively greater than its thickness, and having the side and the corner, which contact with the load in the act of turning, rounded to an approximate ellipse in cross-section, and means for turning such bolster.

(Specification, 6s.; drawing, 1s.)

No. 21727.—30th August, 1906.—FREDERICK CAPEL BROWN, of Komata, Auckland, New Zealand, Mine Superintendent. Improvements in apparatus for the treatment of ores and for the electrolytic deposition of gold, and silver, and other metals from solutions containing said metals.*

Claims.—(1.) The method of treating crushed ore, or slimes, or the like in a vessel or apparatus, as shown in figure 1 and as detailed, whereby the material under treatment is agitated or circulated by means of compressed air, as specified, and so that during such agitation or circulation the free gold and silver contents of the material are amalgamated, and its other gold and silver contents are dissolved and deposited electrolytically, in the manner described. (2.) The apparatus shown in figure 1, and specified, for mixing, agitating, and circulating materials in metallurgical or similar operations by the aid of compressed air, and, during the agitation, for amalgamating the free gold and silver contained in the material under treatment, in the manner as described. (3.) The apparatus shown in figure 1, and specified, for mixing, agitating, and circulating materials in metallurgical or similar operations by the aid of compressed air, and, during such agitation, for dissolving the gold and silver contents of the ore by means of suitable solvents, and depositing the metals by means of electricity on suitable cathodes, as described and illustrated. (4.) In apparatus of the kind specified and shown in figure 1, the combination of devices consisting of a deep tank with inverted cone-shaped bottom, a pipe centrally or otherwise arranged within the tank and open at both ends, lower end of said pipe and outside of lower end of said pipe arranged to receive and project supply of compressed air, pipes or jets arranged to discharge and distribute liquid or air into the inverted conical part of the tank, and amalgamating devices arranged at the top of the tank or at the bottom of it, or at both top and bottom, and so that mercury may be supplied thereto and be conducted therefrom, and with means therefor, in the manner and for the purposes described and illustrated. (5.) In apparatus of the kind specified and shown in figure 1, the combination of devices consisting of a deep tank with inverted cone-shaped bottom, a pipe centrally or otherwise arranged within the tank and open at both ends, lower end of said pipe and outside of lower end of said pipe arranged to receive and project supply of compressed air, pipes or jets arranged to discharge and distribute liquid or air into the conical part of the tank, and electrodes arranged at the top of the tank or at the bottom of it, or at both top and bottom, and so that mercury may be supplied thereto and be conducted therefrom, and with means therefor, as and for the purposes described and illustrated. (6.) In the apparatus of the kind specified and shown in figure 1, the combination of devices for agitating the material under treatment, amalgamating the free gold and silver contained therein, electrolytically depositing metals in said material, and for supplying mercury for the purpose set forth, as described and illustrated. (7.) The method of treating metal-bearing solutions or the like in a vessel or apparatus, as shown in figure 7 and as detailed, whereby the solution under treatment is agitated or circulated by means of compressed air, as specified, and so that during such agitation or circulation the gold and silver contents are deposited electrolytically, in the manner described. (8.) In the apparatus shown in figure 7 and specified, the combination of devices for mixing, agitating, and circulating metal-bearing solutions in metallurgical or similar operations by the aid of compressed air, and, during such agitation, for depositing the metals by means of electricity on suitable cathodes, as described and illustrated.

(Specification, 10s. 6d.; drawing, 3s.)

No. 21728.—30th August, 1906.—WILLIAM BEAMISH, of Cromwell, New Zealand, Dredgeman. Improvements in collapsible boxes and means for assembling and securing same.*

Claims.—(1.) A collapsible box, consisting of a set of boards with bevelled ends and similar boards with bevelled grooves fitted together with the bevels reversed, the perpendicular face of each bevel-groove being on the inner side, the boards being held together by a set of metal bands, each of which is provided with a spike in one end and a hole in the other end for the spike, substantially as described and illustrated in the drawings. (2.) An assembling case for the box described in claim 1, having its top open and one side hinged and fitted with a catch, and provided internally with parallel grooves to receive fastening bands, substantially as described and illustrated in Fig. 10.

(Specification, 5s. 9d.; drawing, 2s.)

No. 21743.—5th September, 1906.—THOMAS JOSEPH WHELAN, of 182 Glenferrie Road, Hawthorn, Victoria, Australia, Inventor. Improved combination knife cleaner and sharpener.*

Claims.—(1.) In a knife cleaner and sharpener, the combination of two pieces of wood or such like hinged or connected together, the top surface of the upper or lid portion being coated with emery or such like for sharpening purposes, the inside portion of the lid and the top surface of the bottom