joint becoming solid by the evaporation of the solvent, as
described. (2.) A joint composed of substances prepared
originally in a liquid form, and in that condition run into
place between the folds of the metal, after which the metal
may be further wrapped or tightened, said joint becoming
solid by the evaporation of the solvent, as described.
(Specification, 2s.)

No. 14616.-13th March, 1902.-JOHN WISEMAN, of Auckland, New Zealand, Saddler. An improved gaiter.

Claim.-In gaiters of the class described, an ankle-piece secured to the folding-piece, such ankle-piece being made of thicker material than the folding-piece, and being provided with means for securing it round the wearer's ankle, and a strap for securing the folding-piece in the folded position, as set forth.

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

No. 14617.-13th March, 1902.-HIRAM JONES, of 99, South Street, Ascot Vale, County of Bourke, Victoria, Engineer. An improved machine for cutting tobacco, to be worked by hand, steam, or other motive power.

Claims.-(1.) In a machine for cutting tobacco, the combination of the holding-plate H with vertical springs H², substantially as described and shown. (2.) In a machine for cutting tobacco, the combination of horizontal spiral spring I³ with loose collar I⁸ working on plain part of screw I, and which causes the re-engagement of extended nut I¹ with screw I when the motion of ratchet wheel J is reversed, substantially as described and shown. (3.) The specified machine for cutting tobacco, constructed and arranged substantially as described and illustrated, as and for the purposes set forth, as a combination of parts.

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

No. 14619.-13th March, 1902.-GEORGE WATERS PITT, of South Molton Mansions, London, England, Gentleman, and EDWARD MARTIN, of 27, Park Lane, Stoke Newington, London, England, Engineer. Improvements in or relating to wheels and tires for vehicles.

Claims.-(1.) In wheels and pneumatic tires for vehicles, the combination of a felloe formed with serrations running alternately radially and circumferentially on each side, a steel band with or without grooves, and a flat ring on each side of a U-shaped band, and bolts for securing such rings in position, all substantially as set forth. (2.) In wheels and tires such as those described, forming the felloe (or felloe and flat rings) with projections or indentations, substantially as and for the purposes set forth.

(Specification, 3s. 6d.; drawings, 2s.)

No. 14620.-13th March, 1902.-WILLIAM THOMAS LOCKE TRAVERS, of Wellington, New Zealand, Solicitor (nominee of Robert Siegfried, of 315, Orchard Place, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improved collector rings for electrical machines.

Claims.-(1.) For an electrical machine, a plurality of collector rings arranged side by side and having supporting arms that project into approximately the same plane, by means of which arms they are secured to a supporting ring. (2.) For an electrical machine, collector rings constructed and supported substantially as described with reference to the drawings.

(Specification, 3s. 6d.; drawings, 1s.)

No. 14628.-11th March, 1902. - ALEXANDER STORRIE DUNCAN, of Invercargill, New Zealand, Agricultural-implementation Manufacturer. An improved hinge for farm gate or hurdle.

Claim.-A hinge for gate or hurdle consisting of a swivel frame carrying a roller, and a holder for swivel frame, substantially as shown in drawings and described.

(Specification, 1s. 9d.; drawings, 1s.)

No. 14636.—15th March, 1902.—FRANCIS WILLIAM PAYNE, of Dunedin, New Zealand, Consulting Engineer. Centrifugal tailings-stacker.

Claims.—(1.) In combination, for stacking tailings, a rotary box carried on an arm secured to a shaft caused to fill with tailings, to revolve slowly at first, increasing to great speed, returning slowly to its first position by means of gearing and a steam spring, substantially as set forth. (2.) In combination, a box in position under a tailings-chute forced to revolve slowly at first, and by the combined movement of levers, rods, and gearing, combined with a steam or similar spring, to revolve at great speed, throwing out the tailings, and continuing its revolution till it assumes the position for again being filled, all substantially as set forth and as described and explained.

(Specification, 3s.; drawings, 1s.)

No. 14638.—15th March, 1902.—PATRICK H. REARDON, of 24, First Street, San Francisco, California, United States of America, Mechanic. Improvements in pressure-regulators.

Extract from Specification.—This invention relates to a pressure-relieving device adapted to control the operation of power-driven air-compressors. The object of the invention is to provide a simple and efficient device to avoid the excessive and unnecessary duty on the engine driving an air-compressor after the maximum pressure required in the receiver is attained. This object is accomplished by means of the devices illustrated in the drawing, which shows a vertical section of the device. Referring to this drawing, 1 is a length of pipe or casing adapted to be interposed in the ordinary discharge-pipe of the compressor between the compressor and the receiver. The upper portion of this casing is slightly enlarged, and is provided with a valve opening upwards or in a direction of the receiver suitably guided to insure its proper seating, normally closed by the pressure in the receiver. A perforated hood or plate is located above this valve to protect the valve-guide from oil and dirt. Beneath valve in pipe, and preferably located transverse to said pipe, is a piston fitting snugly but freely movable in cylinder. The outer end of this cylinder is provided with a pass-by or passage connecting the end of the cylinder with the pipe or casing above the valve, and in free communication with the receiver-pressure, which pressure is thus constantly exerted upon the outer end of piston. Secured in piston is a stem or rod provided with a valve secured upon its other end. This valve is of somewhat peculiar construction, being provided with an annular extension with a cylindrical or inwardly projecting flange or rib. A valve is located and guided in an opening or port in the side of pipe, at the outer end of which opening is provided a suitable seat for valve, to form a valve-controlled opening to the exterior of pipe. Besides the valve-seat is an outer trued surface over which the cylindrical rib fits. A bell-crank lever is provided, pivoted upon a suitable bracket preferably attached to the pipe. The short arm of the bell-crank lever rests against the valve, preferably through the intervention of the hinged bearing-piece jointed to the upper end of arm, its free end bearing against the valve or stem to which the valve is secured. A suitable weight or counterpoise is adjustably secured upon the lever. The device is so simple that its operation is obvious from its construction, so that an extended description of its operation is not deemed necessary. The position of the weight on the lever determines the maximum pressure in the receiver; when this pressure is exceeded the pressure on piston overcomes the gravity of the weight and forces the valve open. Thus the engine thereafter simply works against atmospheric pressure instead of against the pressure in the receiver, the valve preventing the escape of air from the receiver. By reason of the annular flange of valve, when the valve is open ever so slightly the impact of the escaping air forces the valve more fully open and keeps it open. Without this arrangement of the valve the device would be of questionable efficiency. An ordinary valve under the conditions of this device would simply open sufficiently to allow the escape of the air above the desired pressure, the engine during the time of the escape working against the normal pressure in the receiver. By means, however, of the present described form of valve the reaction of the outgoing air forces the valve open and keeps it open, so that the engine is relieved of more than 85 per cent. of the normal load. When the pressure in the receiver falls the opposite result takes place, and the weight forces the valve to its seat and the air from the compressor raises valve and passes on to the receiver.

[Note.—The number and length of the claims in this case preclude them from being printed, and the foregoing extract from the specification is inserted instead.]

(Specification, 5s. 6d.; drawings, 1s.)

No. 14641.—20th March, 1902.—JOHN MARION RAUHOFF, of 1250, West 60th Street, Chicago, Illinois, United States of America. Mechanism for converting motion.

Claims.—(1.) Apparatus for converting rotary into reciprocating motion, for use in stirring and other machines, comprising a shaft provided with spiral grooves the walls of which flare, and a reciprocating head on said shaft provided with bearing-stems rotatably mounted therein on balls, and having tapered bearings entering said flaring grooves to engage the side walls thereof, each stem being mounted