2786
THE NEW ZEALAND GAZETTE.
[No. 88

pose specified. (4.) The general arrangement, construction, and combination of parts in the improved nail-making machine as described, as illustrated in the drawings, and for the purposes specified.

(Specification, 7s.; drawing, 3s.)

No. 21724.—31st August, 1906.—WILLIAM CRAIG LAWRENCE, of Waitara, Taranaki, New Zealand, Storekeeper. An improvement in or relating to spades.

Claims.—(1.) For the purpose indicated, a sheath made of sheet metal and having a channel, a scraper having its end formed into a lug and adapted to enter the said channel, the sheath being attached to the handle of a spade by pins or the like, substantially as set forth, and illustrated on the drawing. (2.) The combination and arrangement of parts comprising the improvement in or relating to spades, substantially as set forth, and as illustrated on the drawing.

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

No. 21725.—28th August, 1906.—FRANCIS WILLIAM PAYNE, of Dunedin, New Zealand, Consulting Engineer. Improvement in directing a swiftly flowing current to current-wheels.

Claims.—(1.) In current-wheels working on pontoons, the combination of the wheels with the pontoons so constructed that the body of water is received in the wide bell-mouthed entrance of the intake and concentrated in all directions till it reaches the wheel with greater rapidity and force than that of the usual current, all substantially as set forth in the drawings, and as described and explained. (2.) In pontoons moored in a swiftly flowing current and carrying a motor actuated by said current, a screw worked by a current concentrated on all sides and directed so as to strike the blades to the best advantage, all substantially as described and explained. (3.) In pontoons carrying motors worked by the current of the stream in which said pontoons are moored, the forming of the intake of the current as a bell-mouthed opening, compressing the water preferably in all directions, combined with a motor so formed that the water must drive it before it is able to get past it, all substantially as shown on the drawing, and as described and as explained.

(Specification, 4s.; drawing, 1s.)

No. 21733.—5th September, 1906.—GEORGE COATES, of Winterslow, Salisbury, England, Farmer. An improved fencing-wire strainer.

Claims.—(1.) In a wire-strainer of the class described, the combination, with a fingered claw, of a wire-coupling having openings adjacent to its opposite ends for connection with one wire-end, and to be received and held by the said claw, and movable means for connection with the other wire-end to bring the latter in a position for engagement with the said coupling. (2.) In a wire-strainer, in combination, a chain provided at one end with a hook, a claw detachably engaging with the chain at one of several suitable points along it, a wire-grip, means for drawing the claw with the chain towards the wire-grip, and a hook mounted on the wire-grip for holding the chain during the reverse movement of the claw, all substantially as set forth and for the purpose specified. (3.) In a wire-strainer, in combination, a rack-frame, a slider moving smoothly on the rack-frame and carrying a wire-grip, a follower and pawl integrally connected and mounted on the rack-frame behind the slider, and operated by the slider substantially in the manner described. (4.) In a wire-strainer, a wire-grip comprising, in combination, a piece having a smooth groove and a recess whose upper face is inclined, a hard sleeve working in the recess and having its lower face a corrugated incline, a bolt threaded through the sleeve, and a nut, all operating substantially as set forth.

(Specification, 7s.; drawing, 1s.)

No. 21734.—5th September, 1906.—ERNEST WILLIAM HART, of Windmill Road, Luton, Bedford, England, and WILLIAM PETER DURTNALL, of 8 Crofton Park Road, Brockley, Kent, England, Electrical and Mechanical Engineers. Improvements in and connected with the propulsion of railway, tramway, road, or similar vehicles, boats, and the like.

Claims.—(1.) In a method of propelling a vehicle or boat, comprising the combination of a prime mover, an electric generator, a motor, an electrical connection therewith and appropriate transmission gear, the use of an electric generator having a revolving magnet or magnets and a stationary armature, the windings being arranged for polyphase alternating current. (2.) In a method of propelling a vehicle or boat as claimed in claim 1 adapting the exciter so that the excitation of the electric generator field magnet or magnets may be varied substantially as and for the purpose described.

(Specification, 8s.; drawings, 2s.)

No. 21740.—5th September, 1906.—JOHN BRINKLEY MARSHALL, of No. 10 Wyman Street, Broken Hill, New South Wales, Australia, Engineer. Improvements in rock-drilling machines.

Extract from Specification.—My improved cylinder and valve-chest are made somewhat on the principles of the Ingersoll Eclipse or spool-valve machine, but the passages in the cylinder are so constructed and arranged that the port which is in front with respect to the valve communicates with the rear end of the cylinder, and the rear port communicates with the front end of the cylinder, while the valve-chest escape passages or ports go directly through from valve-chest bore to cylinder-bore. The valve which is cylindrical in cross section is similar to that used in the Ingersoll Eclipse and some other machines, but is made without any central hole, rotary movement being prevented by a yoke or horseshoe-shaped device securely fixed inside the bore of the valve-chest. The improvement in the piston consists in making the annular recess therein of varied depth to give a smaller effective passage between the bottom of recess and the wall of cylinder at the forward end of the piston, thereby reducing or eliminating the tendency to cushion the blow which is found in some machines in which the piston has a recess in the middle of its length acting as a valve in itself. To permit of the nose being removed to attend to the packing without exposing the working parts inside the cylinder an intermediate cover is interposed between the nose and the cylinder end, which cover is held in place by collars on the main tie-bolts of the machine, and the packing leather is held in a recess between the nose and the intermediate cover. The rotating device consists of a barrel or wheel secured upon the rifle-bar and having corrugations around its periphery in combination with a ring placed in the cylinder end carrying rollers arranged in sloping recesses with springs and plungers so that the rollers permit the revolution of the barrel in one direction only.

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

(Specification, 12s.; drawings, 2s.)

No. 21742.—5th September, 1906.—THOMAS ALEXANDER STEPHEN WOOD, of 4 St. Thomas’ Road, Craven Park Road, Harlesden, London, England, Engineer. Improved construction of apparatus for cleaning, dyeing, or otherwise treating wool, hair, cotton, and other animal or vegetable fibrous or textile material.

Claim.—The improved construction of apparatus for cleaning, dyeing, or otherwise treating wool, hair, cotton, and other animal or vegetable fibrous or textile material, consisting of a fixed tank 1, having blades 14 across the bottom, steam inlet 33, water inlet 32, draw-off tap 16, and manholes 17; a revolving cage 12, situate within tank 1 and operated by gear outside of said tank, a reciprocating plunger or piston 18 arranged in said washer 12 and operated by gear outside of said tank 1, doors 28 enclosing an opening in said plunger, angled plate 15 on bottom of cage 12, all arranged and acting substantially as set forth.

(Specification, 4s. 6d.; drawings, 3s.)

No. 21753.—5th September, 1906.—RICE OWEN CLARK, of Hobsonville, Auckland, New Zealand, Pipe-manufacturer. An improved inspection inlet to pipes, junctions, sewers, drains, traps, or other like channels.

Extract from Specification.—Different ways of securing this result are illustrated and explained. The inspection-inlet is built up or made as shown in the six figures in the drawing, and the lid is made the same for each way or method. The lower edge of the trap within the inlet is made with a ledge protruding upwardly, all round which bounds the opening in the pipe-junction or the like, and is immediately below the edge of the lid that sits over the opening to stop the inlet. The edge of the lid is made to fit down inside this ledge and on top of the same, with the walls of the inlet rising up from the sides of the pipe as shown. Before fitting the lid into its place within the inlet, a roll of strong pipe-clay, or other suitable clay or the like, is placed in the