Nov. 8.] THE NEW ZEALAND GAZETTE. 2057

purpose described. (5.) In an ammunition-box, the combination with a recess such as A³ at one end of the box, having a rounded operative edge, of an opposed rounded tongue such as B secured to the lid of the box, substantially as and for the purpose described. (6.) In an ammunition-box, the combination with a fixed supporting edge such as A⁴ of a tongue such as B, the opposing face of one member lying in a different plane from that of the other, substantially as and for the purpose described. (7.) In an ammunition-box, the combination with a device which instantaneously grips the cartridge-band when the lid of the box is closed, of a catch arranged at the side of the box so that the lid may be slightly raised while the gun is firing and can be immediately depressed and the cartridge-band gripped when firing ceases, substantially as described. (8.) The complete ammunition-box substantially as described, and illustrated in the drawings.
(Specification, 5s.; drawings, 1s.)

No. 13097.—26th October, 1900.—MARCONI’S WIRELESS TELEGRAPH COMPANY, LIMITED, of 18, Finch Lane, Threadneedle Street, London, England (assignee of Guglielmo Marconi, of 18, Finch Lane, aforesaid, Electrician). Improvements in receivers for electrical oscillations.

Claims.—(1.) In a receiver for electrical oscillations, the combination of an induction coil the secondary of which is wound in two parts, an aerial conductor connected to one end of the primary, a capacity connected to the other end of the primary, a detector connected to the outer ends of the secondary, and a local circuit connected to the inner ends of the secondary. (2.) In apparatus such as is referred to in claim 1, placing a condenser across the inner ends of the secondary.
(Specification, 2s. 3d.; drawings, 1s.)

No. 13098.—26th October, 1900.—ARTHUR STANDISH HATRICK, of Heyfield, Victoria, Mounted Constable of Police. An improved adjustable clump sole for footwear.

Extract from Specification.—I cut a hide of leather, or sheet of other suitable composite material (such as various gutta-percha or indiarubber and cork compositions), into straight strips of the desired width and length so that there shall be no waste, and these I coil or wind helically (whilst preserving the shape or outer contour of a sole), and mould them so that they will retain the said peculiarities when removed from the mould. Instead of being cut into strips and moulded, my improved adjustable clump sole may be stamped out of the hide.

Claim.—An improved adjustable clump sole for footwear, consisting of a strip of leather or the like formed or moulded as illustrated in the drawing, and for the purposes specified.
(Specification, 2s.; drawings, 1s.)

No. 13099.—26th October, 1900.—JOHN HODGSON LEE, of 4, Elm Grove, Peckham, Surrey, England, Gentleman. Improvements in the treatment of ores.

Claim.—The process of treating ores which consists in mixing the powdered ore into a pasty mass with carbonaceous material, carbonising the same, and decarbonising, substantially as described.
(Specification, 1s. 6d.)

No. 13100.—26th October, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of Gilbert Wright, of 409, Ross Avenue, and Christian Aalborg, of 218, Franklin Street, both in Wilkinsburg, Pennsylvania, United States of America, Electrical Engineers). Improvements in insulating supports for electrical conductors.

Claims.—(1.) For electric conductors, an insulating supporting block having a central aperture, transverse side grooves, a recess surrounding, the aperture at one end, and a corresponding boss on the opposite end, substantially as described. (2.) The application of a number of insulating supporting blocks such as claimed in claim 1 for supporting conductors on a plurality of laterally projecting brackets, each of which has a plurality of upwardly projecting hollow bosses received in the recesses of the supporting blocks and clamped by bolts passing through the apertures of the same, substantially as described, and shown in Fig. 1 of the drawings. (3.) Insulating supports for electric conductors, substantially as described with reference to Figs. 2, 3, and 4 of the drawings, for the purpose specified.
(Specification, 2s.; drawings, 1s.)

No. 13101.—26th October, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of Percy Holbrook Thomas, of 4516, Forbes Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in means for protecting electrical apparatus from abrupt changes in static potential.

Claims.—(1.) Means for protecting electrical apparatus from abrupt changes in static potential, comprising an impedance body between the source of static disturbance and the apparatus to be protected, and a condenser connected by one terminal between the impedance body and the apparatus to be protected and by the other terminal to a body or bodies having electro-static capacity with such windings of the apparatus to be protected as are electrically connected to the circuit in which the disturbance occurs, or to a body having approximately the same potential as the said body or bodies, and with or without a discharge-path containing one or more spark-gaps, such as a lightning-arrester, connected in parallel with the condenser and having one of its terminals joined to the impedance coil on the side remote from that to which the condenser is connected. (2.) Means for protecting electrical apparatus from abrupt changes of static potential comprising an impedance body in series with the winding to be protected and a condenser in shunt, but nearer to the winding than the impedance body. (3.) The systems of protecting electrical apparatus from abrupt changes in static potential substantially as described, and as shown in the drawings.
(Specification, 5s. 3d.; drawings, 1s.)

No. 13102.—26th October, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of Benjamin Garver Lamme, of 230, Stratford Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in polyphase induction motors.

Claims.—(1.) A polyphase induction motor in which the primary member is provided with a plurality of sets of coils for producing a corresponding number of rotating magnetic fields differing from each other as to the number of poles, the coils for producing the minimum number of poles being located in the bottoms of the core-slots, and those for producing the maximum number of poles being located adjacent to the upper or open ends of the slots, for the purpose specified. (2.) A three-phase induction motor having a primary member provided with three sets of windings located in the core-slots, as shown in the drawings.
(Specification, 2s. 3d.; drawings, 1s.)

No. 13103.—26th October, 1900.—THE BRITISH WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, LIMITED, of Westinghouse Building, Norfolk Street, Westminster, England, Manufacturers (assignees of Norman Wilson Storer, of Edgewood Park, Allegheny, Pennsylvania, United States of America, Electrical Engineer). Improvements relating to the distribution of electric currents.

Claims.—(1.) The method of maintaining a constant electro-motive force in a circuit supplied with energy from a source of variable electro-motive force, which consists in impressing directly upon said circuit a variable electro-motive force that is substantially equal to the difference between the electro-motive force desired and that supplied to the circuit by the main generator. (2.) In a system of electrical distribution having a main circuit and a branch circuit, three dynamo-electric machines the armatures of which are mechanically connected, the first machine being connected across the main circuit and having a normally saturated field magnet, the second machine having an unsaturated field magnet, and having one of its terminals connected to one side of the main circuit and the other of its terminals connected to one terminal of the field-magnet winding of the third machine, the armature of this latter machine being included in the branch circuit for the purpose of automatically maintaining constant the voltage of such branch circuit, or for increasing or decreasing the voltage of the same so as to make it higher or lower than that of the main circuit. (3.) The combination of three dynamo-electric machines, or of a motor generator and a dynamo-electric machine connected to main and branch circuits, substantially as described with reference to the drawings, for the purpose specified.
(Specification, 4s.; drawings, 1s.)