Oct. 2.] THE NEW ZEALAND GAZETTE. 2211

of the class indicated, the arrangement of the spaces for the heads of the axes in the lower tier in the positions set forth. (6.) In a stand of the class indicated, the arrangement of the spaces for the heads of the axes in the upper tier as set forth.

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

No. 15386.—8th September, 1902.—GEORGE JOHN HOSKINS, of Sydney, New South Wales, Australia, Engineer. An improved joint for the locking-bar type of rolled-iron pipes.

Claims.—(1.) In the locking-bar type of rolled iron or steel pipes, an annular band or collar in combination with a recess formed by cutting away the external ends of the locking bars of two adjacent pipes, and caulking the annular seam formed by the collar with the external surface of the pipe, as and for the purposes specified. (2.) In the locking-bar type of rolled iron or steel pipes, an annular band or collar in combination with a recess formed by cutting away the external ends of the locking-bars of two adjacent pipes, and with wedges inserted between the cut-down ends of the locking-bars and the edges of the band or collar, as and for the purposes set forth. (3.) In the locking-bar type of rolled iron or steel pipes, an annular band or collar in combination with a recess formed by cutting away the external ends of two adjacent pipes, and with auxiliary spigot ends riveted to the ends of the pipes and wedged to the locking-bars, whereby an ordinary caulked lead joint may be made, as specified. (4.) In the locking-bar type of rolled iron or steel pipes, in combination, an annular band or collar shaped like a socket and riveted to one pipe, an auxiliary spigot end riveted to the other pipe, both socket and spigot ends being wedged to the locking-bars, and a recess formed by cutting away the external ends of the locking-bars of two adjacent pipes so that the annular socket and spigot ends may lie evenly upon the external surfaces of the pipe-plates, the whole forming a combination whereby an ordinary caulked lead joint may be made with rolled iron or steel pipes of the locking-bar type, as set forth.

(Specification, 3s. 9d.; drawings, 2s.)

No. 15388.—12th September, 1902.—FREDERICK AUGUSTUS MILLER, of Ross Place, Lawrence, Otago, New Zealand, Builder. An improved lifting-jack.

Claims.—(1.) In a lifting-jack, a kicker or support pivoted to the sole of the jack, and a chain connecting the kicker to the lever, substantially as set forth. (2.) In a lifting-jack, in combination, a kicker or support having a slotted hole at its bottom end and pivoted to the sole of the jack, and forked at its upper end to embrace the lever, a piece of hoop steel in the bottom of the fork, and a chain connecting the kicker to the end of the lever, substantially as set forth. (3.) In a lifting-jack, in combination, a lever fulcrumed to a pillar, steps upon the end of the lever, a stop on the lower side of the lever, a kicker pivoted to the sole of the jack, and a chain connecting the kicker to the lever, substantially as set forth. (4.) The combination and arrangement of parts comprising my improved lifting-jack, substantially as and for the purposes set forth.

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

No. 15390.—12th September, 1902.—ALBERT CEDERMAN, of Hokitika, New Zealand, Engineer. An improvement in buckets for dredges.

Claim.—In a dredge-bucket, a lip riveted thereto and having a pointed part, substantially as and for the purposes set forth.

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

No. 15393.—10th September, 1902.—ARTHUR KINGDON SMITH, of 133, Macquarie Street North, Sydney, New South Wales, Bookseller (assignee of George McNeill Robb, of Potts Point, near Sydney aforesaid). Apparatus for recording and indicating the score of players in such games as table-tennis, lawn-tennis, and the like.

Claim.—In an apparatus for recording and indicating the score of the players in such games as table-tennis, lawn-tennis, or the like, the combination of two series of numbers representing respectively the games won and the points obtained in the current game, such numbers being arranged in progressive order either round the edges of a pair of dials or in horizontal groups, the scores being indicated in the former case by revolving dial-hands or in the latter case by sliding pointers; with a pair of slots for the names of the players, provided either with a revolving index-hand or a

sliding pointer, and the printed words “Server,” “Points,” and “Games,” substantially as described, and as illustrated in the drawings.

(Specification, 2s. 3d.; drawings, 1s.)

No. 15394.—10th September, 1902.—EDWARD WATERS, Jun., a member of the firm of Edward Waters and Son, Patent Agents, of 414-418, Collins Street, Melbourne, Victoria (nominee of Reginald Aubrey Fessenden, of Manteo, North Carolina, United States of America, Electrical Engineer). Improvements in signalling by electro-magnetic waves.

Claims.—(1.) A receiver for currents produced by electro-magnetic waves consisting of a conductor having small heat-capacity, substantially as set forth. (2.) A receiver for currents produced by electro-magnetic waves consisting of a conductor having small radiating-surface, substantially as set forth. (3.) A receiver for currents produced by electro-magnetic waves consisting of a conductor having slow resistance and small heat-capacity, substantially as set forth. (4.) A receiver for currents produced by electro-magnetic waves consisting of a conductor having a curved portion of small heat-capacity, substantially as set forth. (5.) A receiver for currents produced by electro-magnetic waves consisting of a conductor constructed to lose its heat more rapidly by conduction than by radiation, substantially as set forth. (6.) A receiver for currents produced by electro-magnetic waves consisting of a conductor rapidly responsive as regards temperature to variations in electric currents, substantially as set forth. (7.) A receiver for currents produced by electro-magnetic waves consisting of a conductor formed of two or more materials, and having small heat-capacity, substantially as set forth. (8.) A receiver for currents produced by electro-magnetic waves consisting of a short conductor having small heat-capacity, substantially as set forth. (9.) In a system of signalling by electro-magnetic waves, the combination of a receiving circuit and a receiver having a small heat-capacity, and adapted to be energized by currents produced by electro-magnetic waves in the receiving circuit, substantially as set forth. (10.) In a system of signalling by electro-magnetic waves, the combination of a receiver rapidly responsive as regards temperature to variations in currents produced by electro-magnetic waves, and an indicating-mechanism controlled by changes in temperature due to variations in currents in said receiver, substantially as set forth. (11.) In a system of signalling by electro-magnetic waves, the combination of a receiving conductor, a receiver rapidly responsive as regards temperature to variations in electric currents, and adapted to be energized by currents produced by electro-magnetic waves in the receiving conductor, a circuit controlled by said receiver, and an indicating-mechanism controlled by said circuit, substantially as set forth. (12.) In a system of signalling by electro-magnetic waves, the combination of a grounded sending conductor, a receiving conductor, a receiver rapidly responsive as regards temperature to variations in electric currents and adapted to be energized by currents produced by electro-magnetic waves in the receiving conductor, a circuit controlled by said receiver, and an indicating-mechanism controlled by said circuit, substantially as set forth. (13.) A system of signalling by electro-magnetic waves, having, in combination, a receiver responsive as regards temperature to variations in currents produced by electro-magnetic waves, and a differentially wound indicating-mechanism controlled by currents produced in the receiving conductor by electro-magnetic waves, substantially as set forth. (14.) In a system of signalling by electro-magnetic waves, the combination of a receiving conductor, a receiver responsive as regards temperature to variations in currents produced in said conductor by electro-magnetic waves, a circuit controlled by said receiver, and a differentially wound mechanism controlled by said circuit, substantially as set forth. (15.) In a system for signalling, &c., by electro-magnetic waves, the combination of a receiver responsive as regards temperature to variations in currents produced by electro-magnetic waves, and a differentially wound indicating-mechanism dependent for its operation on currents produced by electro-magnetic waves in the receiving conductor, substantially as set forth. (16.) In a system for signalling, &c., by electro-magnetic waves, the combination of a conductor adapted to radiate and receive electro-magnetic waves, mechanism for causing the radiation of electro-magnetic waves from said conductor, means for modifying one or more of the characteristics of said waves, a receiving mechanism controlled by currents produced in said conductor by electro-magnetic waves, and means for bringing said conductor into operative relation with either the generating or the receiving mechanism, substantially as set forth. (17.) In a system for signalling, &c., by electro-magnetic waves, the combination of a conductor adapted to radiate and receive electro-magnetic waves, mechanism for causing the radiation of electro-magnetic waves from said conductor, a receiving mechanism