276
THE NEW ZEALAND GAZETTE.
[No. 9

No. 11568.—25th April, 1899.—WILHELM MORRIS, of 183, Hereford Street, Christchurch, New Zealand, Medical Practitioner. Improved device for locking the wheels of bicycles and similar vehicles.*

Extract from Specification.—“According to this invention, a device for locking the wheel of a bicycle or similar vehicle consists of a screw bolt which passes through a threaded hole in the sprocket-wheel or some other revolving part of the driving-mechanism, and takes into a hole in some fixed part of the machine. When applied to the sprocket-wheel, one of the arms may be specially strengthened for the purpose, and a boss formed upon it, in which the screw-head may be sunk. The head by which the screw is turned may be of any one of a great variety of shapes, the key being made to correspond. Instead of the bolt being attached to a moving part, it may be attached to a fixed part and take into a moving part of the machine. In a modification, the bolt is made to slide backwards or forwards, as the case may be, by a spring, and a catch is provided whereby the bolt is held out of its operative position until turned by a suitable key.”

Claim.—The improved device for locking the wheel of a bicycle or similar vehicle constructed, arranged, and operating substantially as described and illustrated.
(Specification, 2s. 3d.; drawings, 8s.)

No. 11829.—26th July, 1899.—JAMES PALMER CAMPBELL, of Wellington, New Zealand, Registered Patent Agent (nominee of Harry Phillips Davis, of 327, Neville Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer, and Frank Conrad, of 709, Whitney Avenue, Wilkinsburg, Pennsylvania aforesaid, Electrical Engineer). Improvement in electrical-measuring instruments.*

Claims.—(1.) In an electrical-measuring instrument of the kind described, a combined bobbin and damper-plate, said damper-plate being located between the polar extensions of the magnet and the bobbin surrounding one of said extensions. (2.) The combination with a movable actuating coil of an electrical-measuring instrument, of a spiral spring tending to hold the coil in its initial position, the weight of said spring being supported by a stationary part of the instrument, substantially as described. (3.) An electrical-measuring instrument constructed substantially as described with reference to the drawings.
(Specification, 2s. 3d.; drawings, £1 1s.)

No. 11832.—27th July, 1899.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of Benjamin Garver Lamme, of 230, Stratford Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in dynamo-electric machines.*

Claims.—(1.) For a dynamo-electric machine, a rotary field-magnet core built up of laminæ, and having pole-pieces provided with side-grooves near their outer ends for the reception of coil-retaining wedges, said wedges being pushed in from both ends of the coil-slot and clamped by bolts through transverse flanges of the wedges. (2.) The modification of the device for preventing radial movement of the wedges, in which pins are fitted in grooves at the sides of the coil-slots and engage in corresponding grooves in the wedges, substantially as described. (3.) Dynamo-electric machines constructed substantially as described with reference to Figs. 1 to 3 of the drawings.
(Specification, 4s.; drawings, £1 1s.)

No. 11886.—16th December, 1899.—JOHN CROW MCGEORGE, of Roslyn, Dunedin, Consulting Engineer. An improved rocking screen preferably for gold-saving dredges.

Claims.—(1.) In gold-saving dredges, the combination of screening-plates such as B, B¹, in a suitable frame such as A, on a rocking shaft such as C, for sifting the gold-bearing wash, substantially as described and explained, and as shown in the drawing. (2.) In dredges for gold-saving, the combination of screen-plates such as the bars or perforated plate B and the plate B¹ in a suitable frame such as A, with rockers or a rocking shaft and bearings such as C, for sifting and grading the gold-bearing wash, substantially as described, and shown in the drawing. (3.) In a dredge for gold-saving, a reciprocating or rocking-screen such as A, B, B¹, on rockers or a rocking shaft such as C, C, reciprocated and worked by convenient means such as D, E, adjustable as to the amount of rocking motion, substantially as set forth.
(Specification, 1s. 6d.; drawings, 3s.)

No. 11919.—24th August, 1899.—JAMES PALMER CAMPBELL, of Wellington, New Zealand, Registered Patent Agent (nominee of Ralph Davenport Mershon, of 120, Broadway, New York, United States of America, Electrical Engineer). Improvements relating to the distribution of electrical power.*

Claims.—(1.) The method of indicating at any point the potential at any other point in an alternating-current circuit which consists in reproducing in miniature in a local circuit the main line impressed and counter electro-motive forces, and the line-capacity, leakage, and distributed load, or such of the latter as it is desired to take into account, and then observing the resultant difference of potential in said local circuit at a point corresponding to the point in the main circuit. (2.) An electrical installation provided with a local circuit in which the main line impressed and counter electro-motive forces, and the line-capacity, leakage, and distributed load, or such of the latter as it is desired to take into account, are reproduced in miniature for the purpose specified. (3.) The various arrangements for indicating at any point the potential at any other point in an alternating-current circuit, substantially as described with reference to the drawings.
(Specification, 10s. 3d.; drawings, 6s.)

No. 11941.—31st August, 1899.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of Harry Phillips Davis, of 327, Neville Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer, and Gilbert Wright, of 409, Ross Avenue, Wilkinsburg, Pennsylvania aforesaid, Electrical Engineer). Improvements in controllers for electric motors.*

Claims.—(1.) A controller for electric motors in which the controller-drum is connected by a spring to its operating-shaft, and so arranged that when the handle is operated the spring is wound up and the drum is held stationary until the operating-handle reaches a predetermined point, when it is automatically released and rotated by the wound spring. (2.) In a controller as claimed in claim 1, a device for clamping one end of the spring to the shaft when the latter is rotated in one direction, and the other end of the spring to the shaft when it is moved in the opposite direction, substantially as described. (3.) Controllers for electric motors constructed and operating substantially as described with reference to Figs. 1 to 12 or to Figs. 13 and 14 of the drawings.
(Specification, 7s. 9d.; drawings, £1 16s.)

No. 11947.—2nd September, 1899.—JAMES PALMER CAMPBELL, of Wellington, New Zealand, Solicitor (nominee of Harry Phillips Davis, of 327, Neville Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer). Improvements in fuse-blocks for electric circuits.*

Claims.—(1.) A fuse-block of the kind described, having the fixed portion of the block provided with an opening through which a projection of the removable portion extends, being clamped by suitable clamping-device, and with or without a blow-out orifice extending through said projection of the removable portion. (2.) A fuse-block constructed substantially as described with reference to the drawings.
(Specification, 2s. 3d.; drawings, 5s. 6d.)

No. 11948.—2nd September, 1899.—JAMES PALMER CAMPBELL, of Wellington, New Zealand, Solicitor (nominee of Gilbert Wright, of 409, Ross Avenue, Wilkinsburg, Pennsylvania, United States of America, Electrical Engineer, and Christian Aalborg, of 212, Franklin Street, Wilkinsburg aforesaid, Electrical Engineer). Improvements in switches for electric circuits.*

Claims.—(1.) An electric switch or automatic circuit-breaker, having a movable member composed of a number of metal laminæ, the operating-lever being connected with said movable member through a toggle mechanism, which is arranged to lock the switch in the closed position, and with or without knife-edge bearings for the toggle levers, to enable the mechanism to work very quickly and easily, substantially as described. (2.) An automatic circuit-breaker having main and shunt contacts, the latter being so arranged that the movable contact first slides down and then tilts away from the fixed contact during the operation of opening the circuit, so that the final interruption occurs at the edge of the movable contact. (3.) For circuit-breakers, knife-edge bearings constructed substantially as described with reference to Figs. 10 to 12 of the drawings. (4.) Electric switches and circuit-breakers constructed according to any of the forms shown in the drawings, and operating as described.
(Specification, 11s. 3d.; drawings, £2 2s.)