JULY 23.] THE NEW ZEALAND GAZETTE. 2015

(2.) A vaporiser comprising a chamber containing a number of superposed zig-zag partitions projecting one into the other, substantially as specified, and illustrated in the drawing.
(3.) A vaporiser comprising a chamber containing a number of superposed zig-zag partitions projecting one into the other, and an approximately horizontal partition upon which a number of sponges are placed, substantially as and for the purposes specified, and illustrated in the drawing.
(Specification, 2s.; drawing, 1s.)

No. 24472.—1st June, 1908.—GEORGE CHARLES SMART, of Martin Street, Wellington, New Zealand, Contractor. Improvements in friction hoists.

Claims.—(1.) In a hoist of the class described, the employment of an intermediate pulley whereby the motion may be reversed of a hoist operated by a motor running constantly in the same direction, substantially as set forth. (2.) In a hoist of the class described, the combination with a drum and attached pulley, and a pinion and brake-block with which the said pulley may be brought into contact, of a second drum and attached pulley connected to the first drum, a pinion secured to the shaft of the first pinion, and an intermediate pulley capable of being brought into contact with the second pulley and the second pinion, substantially as set forth. (3.) The combination and arrangement of parts comprising improvements in friction hoists constructed, arranged, and operating substantially as set forth, and illustrated in the drawing.
(Specification, 3s. 3d.; drawing, 1s.)

No. 24481.—4th June, 1908.—WILHELMUS ADRIANUS VAN BERKEL, of 54 Boezemsingel, Rotterdam, Holland. Improvements in devices for sharpening the rotary circular knives of meat-slicing machines.

Claims.—(1.) A device for sharpening the rotary circular knife of a meat-slicing machine having two sharpeners, one adapted to act on the face of the knife and the other on the back thereof, which is so constructed that on moving a cam or its equivalent in one direction, springs or equivalent automatically move the sharpeners into contact with the knife, and on moving the cam or equivalent in the opposite direction the sharpeners are moved away from the knife, substantially as described. (2.) A device for sharpening the rotary circular knife of a meat-slicing machine, comprising, in combination, a sharpener adapted to act on the face of the knife, a sharpener adapted to act on the back of the knife, means for carrying the said sharpeners, cam means for simultaneously moving the sharpeners out of engagement with the knife, and spring means for simultaneously moving them into engagement with the knife, substantially as described. (3.) A modification of the device claimed in claim 1, in which the sharpeners are moved into engagement with the knife by operating-cams or equivalent, and are automatically withdrawn from the knife by spring means, substantially as described. (4.) A sharpening-device such as described, having its parts constructed, arranged, and combined together substantially as described with reference to Figs. 1 to 4 or to Figs. 5 to 7 of the drawings.
(Specification, 6s. 6d.; drawing, 2s.)

No. 24482.—4th June, 1908.—ALFRED ERNEST LUTTRELL, of 33 Darling Street, Balmain, Cabinetmaker, and EMIL PAUL HOSCH, of 107 Pitt Street, Accountant, both of Sydney, New South Wales, Australia. An improved rotary pump.

Claims.—(1.) An improved rotary pump characterized by a central cylindrical chamber in which revolves a shrouded disc whose periphery bears against a fixed abutment formed on the inner periphery of the said chamber, a series of blades adapted to slide in and out of slots in the said disc by means of pivoted guide-pieces moving in eccentrically placed raceways in the walls of the said chamber, an inlet to the said chamber in a position above the axial line of the pump, and an outlet on the opposite side of the abutment also above the axial line, substantially as described, and illustrated in the drawings. (2.) In a rotary pump as claimed in claim 1, the relative positions of the inlet, outlet, and abutment, substantially as described, and illustrated in the drawings. (3.) In a rotary pump of the class herein referred to, the combination and arrangement of the parts substantially as described, and illustrated in the drawings.
(Specification, 3s. 6d.; drawing, 1s.)

B

No. 24483.—4th June, 1908.—STEPHEN MATHIAS SMITH, of 307 Washington Street, Boise, Ada, Idaho, United States of America, Mining Engineer. Improvements in the method of treating ores.

Claims.—(1.) The process of recovering slimes from water in which they are suspended, and separating arsenic, sulphur, or antimony from the slimes, which consists in placing the water containing the slimes in a receptacle and uniformly heating the same without boiling or agitation, whereby the slimes are caused to precipitate after the arsenic, sulphur, or antimony has been separated therefrom. (2.) The process of recovering slimes from water in which they are suspended, and separating arsenic, sulphur, or antimony from the slimes, which consists in placing the water containing the slimes in a receptacle and uniformly heating the same without boiling or agitation, whereby the slimes are caused to precipitate after the arsenic, sulphur, or antimony has been separated from the slimes, and then drawing the water free from the slimes from the receptacle. (3.) The process of separating ore-slimes from crushed ore or gangue, and recovering the slimes, which consists in introducing the crushed ore or gangue containing the slimes into a receptacle, subjecting the material therein to the action of the water, whereby the slimes will be separated from the crushed ore or gangue and will flow out over the edge of the receptacle with the water, the slimes by the addition of washing-water being greatly diluted, conveying the water carrying the slimes in suspension into a receptacle, and uniformly heating the same throughout without boiling, agitating or boiling currents in the water containing the slimes, whereby the slimes are caused to precipitate without disturbance, and then drawing off the water free from slimes from the receptacle. (4.) The process of recovering slimes from water in which they are suspended, and clarifying the water, which consists in placing the water containing the slimes in a receptacle and heating the same without boiling or agitation, whereby the slimes are caused to precipitate, and the arsenic, antimony, or sulphur compounds which may be contained in the slimes caused to rise to the surface, removing the elements on the surface of the water, and drawing off the water from the receptacle free from slimes and foreign matter. (5.) The process of settling slimes and purifying the water in which they are suspended, which consists in subjecting the liquid carrying the slimes to the action of heat, whereby the slimes are precipitated and the impurities in the liquid caused to rise, removing the impurities from the top of the liquid, and decanting the liquid from the settled slimes.
(Specification, 10s.; drawing, 1s.)

No. 24486.—4th June, 1908.—PAUL WILHELM SIEURIN, of Lilla torget 6, Gothenbourg, Sweden, Sea Captain. Improvements in winches.

Extract from Specification.—This invention relates to winches of the kind described, having two drums rotatable relatively to one another on a shaft or separate shafts, each being provided with a toothed gear which meshes with another toothed gear, the said last-mentioned gears being each adapted to be coupled and uncoupled by a clutch mounted on a driving-shaft. The novelty of the invention consists primarily in the arrangement of a friction gear or the like, which is movable into and out of engagement with the drums, and is connected to the clutches in such a manner that it is kept in engagement with the drums when one or both clutches are disengaged, but is moved out of engagement with the drums when one or the other of the clutches is uncoupled.
[NOTE.—The above extract from the specification is inserted in place of the claims.]
(Specification, 4s. 6d.; drawing, 3s.)

No. 24487.—4th June, 1908.—MATHEW MONTGOMERIE NEILSON, care of Post-office Box 556, Wellington, New Zealand, Sanitary Engineer. Non-septic treatment of sewage and other organic liquid.

Claims.—(1.) The use of the non-septic tank as here described, whether covered or open. (2.) The use of a sludge or scum removal system as described. (3.) The use of a sludge and scum tank as specified. (4.) The addition of ferment and grub-life, when advisable, to facilitate the process. (5.) The application of medium troughs or trays under the weir or weirs in tank as described. (6.) The application of