JUNE 13.] THE NEW ZEALAND GAZETTE. 1813

No. 22756.—1st May, 1907.—JOHN EDWARD FRIEND, of Albion Street, Annandale, New South Wales, Australia, Engineer. An improved rotary gas-engine.

Extract from Specification.—The invention provides an engine having a revolving piston operated by an exploded mixture of gas and air. According hereto a piston fixed upon the periphery of a disc revolves within an annular chamber. The explosive charge is admitted to the annular chamber between the piston and a cylindrical abutment provided with a groove or cavity which synchronises in rotation with the piston and allows it to pass. The charge is then exploded, and the force thereof causes the piston to make a rotation when the used gas is exhausted, and a new charge taken in. The explosive charge is prepared by compressing gas and air in an independent receiver.

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

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

No. 22763.—2nd May, 1907.—JOSEPH JOHN REKAR, of 909 Ellis Street, San Francisco, California, United States of America, Mine Operator. Hammer and drill-operating device.

Claims.—(1.) In an apparatus for striking blows, in which a reciprocating drill or hammer-carrier is actuated by an oscillating lever fulcrumed at the other end, having a crank turnable through a slot in its intermediate portion, a block fixed to the drill-carrier having cylindrical discs turnable in chambers in its ends, and bolts or pins fixed to the lower end of the oscillating lever, and slidable in radial openings in the turnable discs. (2.) In an apparatus of the character described in which motion is communicated from an oscillating lever to a drill or hammer-carrying shank and springs compressible between collars fixed to the shank and the central propelling-block, a pawl-carrying lever, an eccentric upon the crank-shaft by which said lever is oscillated, and a ratchet-wheel upon the drill-carrying shank. (3.) In a device of the character described in which a carrier-bar is reciprocated as shown, a head chambered to receive the inner end of the drill which has a transverse segmental groove, and an eccentric turnable to engage said groove, with a spring-pressed latch to hold the eccentric in locked position.

(Specification, 4s. 9d.; drawing, 1s.)

No. 22766.—2nd May, 1907.—WILLIAM TYREE, of Tyree’s Buildings, Trafalgar Street, Nelson, New Zealand, Gas-engineer. Improvements in an automatic spray for painting, agricultural, disinfecting, and other analogous purposes.

Claims.—(1.) In the construction of an automatic spray operated by the generation and use of acetylene gas, the combination with a water-chamber, of a carbide-chamber, and of a pipe for conveying water from said water-chamber to said carbide-chamber, so arranged or constructed that the flow of water through such pipe may be operated by a tap or valve outside the apparatus, so as to control and regulate the supply of gas generated. (2.) In the construction of an automatic spray for the purposes stated, the combination with a cylinder such as A of a water-chamber such as M, and of a carbide-chamber such as H, and of a pipe such as P leading from said water-chamber to said carbide-chamber, such pipe having constructed therein a tap or valve operating outside the cylinder. (3.) In the construction of an automatic spray for the purposes stated, the combination with a cylinder such as A, of a water-chamber such as M, and of a carbide-chamber such as H having a perforated iron tube such as V fixed from top to bottom in the centre thereof, and circular perforated cups or receptacles for carbide of calcium, such as K, formed so as to slide thereon fitted throughout the entire length of such tube, and of a pipe such as P leading from said water-chamber to said carbide-chamber, such pipe having a tap or valve therein operating outside the cylinder. (4.) The new or improved automatic spray for painting, and for agricultural, disinfecting, and other analogous purposes, substantially as described and illustrated in Fig. 1 of the drawings. (5.) The new or improved automatic spray for painting, and for agricultural, disinfecting, and other analogous purposes, substantially as described and illustrated in Fig. 4 of the drawings. (6.) In an automatic spray for the purposes stated, the construction of a pipe or pipes leading from a water-chamber to a carbide chamber or chambers, any such pipe having constructed therein a tap or valve operating outside the cylinder, so as to control and regulate the supply of gas as required, and shown by a pressure-gauge. (7.) In an automatic spray for the purposes stated, the generation of acetylene gas in a carbide-chamber by a perforated cylinder or carbide-receptacle being placed in such carbide-chamber, with a cylinder containing water above such carbide-receptacle having an outlet therein so that the water from such cylinder shall flow down the sides of the carbide-chamber and attack the carbide as it rises, substantially as described, and illustrated in Fig. 5 of the drawings.

(Specification, 10s. 9d.; drawing, 2s.)

No. 22772.—4th May, 1907.—THOMAS SUTTON, of Rongotea, Wellington, New Zealand, Builder. Improved collapsible cheese-crate.

Claims.—(1.) A cheese-crate comprising a cylindrical shell, and discs forming divisional plates and ends, the shell having grooves to receive said discs, substantially as specified and illustrated. (2.) A cheese-crate comprising a cylindrical shell, having circumferential rings projecting outwardly, in which recesses are formed and discs adapted to fit said recesses for forming divisional plates within and ends for said shell, substantially as specified. (3.) A cheese-crate constructed of fibre or other pulp, and consisting of the parts constructed, combined, arranged, and operating substantially as specified, and illustrated in the drawing.

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

No. 22779.—6th May, 1907.—RICHARD PIERCE, of Bell Block, Taranaki, New Zealand, Farmer. Improvements in wire-strainers.

Claims.—(1.) In wire-strainers of the kind described, the employment of a tail upon one of the hooks, and means for attaching a grip to the tail, substantially as set forth. (2.) In wire-strainers of the kind described, the employment of a tail upon one of the hooks, and an eye formed upon the tail for the purpose of attaching a grip, substantially as set forth. (3.) The combination and arrangement of parts comprising the improvements in wire-strainers, substantially as and for the purpose specified, and illustrated in the drawings.

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

No. 22783.—19th June, 1906.—VINCENT LITCHFIELD RAVEN, of Alpine Cottage, Darlington, Durham, England, Engineer. Improvements in railway signalling-apparatus.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Extract from Specification.—In the specification of another application for Letters Patent filed by me, dated 1st May, 1907, and numbered 22755, I have described various constructions of railway signalling-apparatus according to which there are provided on an engine or other vehicle (hereinafter referred to as an “engine”) visual and audible signals that are under the control of electro-magnetic apparatus, the circuit or circuits of which is or are arranged to be closed by the action or influence of metallic bars, respectively called Nos. 9 and 10, arranged on the track behind and in the neighbourhood of the line-signal the position of which it is desired to indicate to the engine-driver, the arrangement being such that upon an engine approaching a line-signal the visual and audible signals on the engine will, by reason of the presence of the bars, be first operated so as to indicate danger and call the attention of the driver to the fact that he is approaching a line-signal, and if the line-signal be in the “on” or “danger” position the visual and audible signals will, as the engine continues to travel towards the line-signal, such as the home-signal, at which he must stop if such signal be at “danger,” continue to indicate “danger” so as to necessitate the engine coming to rest, whereas should the line-signal have been moved into the “off” or “line clear” position the visual signal will be automatically returned to its normal or “line clear” position, and the audible signal will cease to sound, thus indicating to the driver that the line-signal is in the “line clear” position so that he may continue to advance. Bar No. 9, which may or may not be insulated, serves to close, as by the aid of brushes or equivalent devices, and without attention, the circuit of an electric battery through a main electro-magnetic device, and cause the visual and audible signalling-devices to operate when the engine passes over the said bar, the several devices mentioned, excepting the bar, being on the engine. Bar No. 10 is, however, under the control of the signalman through a line-switch,