Sept. 29.] THE NEW ZEALAND GAZETTE. 2333

ance with the present invention, the successive impellers are not separated by the usual fixed diaphragms at the hub, but the hubs of the successive impellers are provided with suitable balancing surfaces on the delivery side, so that the delivery pressure acts in opposition to the suction pressure on the hub of each impeller. The delivery pressure of the last impeller of the series is preferably not applied to its hub, but the complete balancing of the shaft carrying the series of impellers may be secured by a pipe connecting the suction of the first impeller with a balancing-chamber at the rear side of the last impeller. Outside vanes on the opposite side walls of the impellers are preferably used to prevent leakage past the running-joints into the balancing-spaces at the hubs.

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

(Specification, 5s.; drawing, 1s.)

No. 18367.—25th August, 1904.—HENRY R. WORTHINGTON, a corporation organized and existing under the laws of the State of New Jersey, and having its principal place of business at 114, Liberty Street, City, County, and State of New York, United States of America (assignees of Frederick Ray, of East Orange, United States of America, Mechanical Engineer). Improvements in centrifugal, turbine, and similar pumps.

Extract from Specification.—This invention relates to that class of centrifugal, turbine, or similar pumps in which enclosed impellers are used, the special objects of the invention being to provide a simple and efficient construction in which friction is lessened by air-chambers on opposite sides of the impeller, and to provide improved means for balancing the impeller and preventing leakage at the hub. The invention is applicable to pumps having either a single impeller or series of impellers—that is, either single-stage or multistage pumps—but certain features of the invention have been devised in connection with the application of the broad invention to multistage pumps, which features form specific parts of the invention.

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

(Specification, 6s. 9d.; drawing, 1s.)

No. 18369.—25th August, 1904.—JOHN FRANCIS MCNEILL, of corner of Spencer and Bourke Streets, Melbourne, Victoria, Australia, Commercial Traveller. Improvements in or connected with gates.

Extract from Specification.—The gate is so mounted that when operated upon from either side the same is thrown out of its perpendicular position, and at the same time the latch end of the gate is raised, thereby releasing itself from the locking-device with which it was engaged. An initial movement having been thus given to the gate, it will, aided by its own weight, swing to its open or closed position as may be desired. It may be explained that the gate always opens and closes in the direction opposite to the pull on the operating rope or chain. In connection with the gate and its operative devices I employ suitable locking-devices, so that the gate is locked automatically when swung to either position.

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

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

No. 18372.—25th August, 1904.—JULIA ALLEN, of Puke-roa, Hunterville, New Zealand, Housewife. An improved hair-curler.

Claim.—In hair-curlers of the class described, forming the hinged bar and frame of curved shape, substantially as and for the purposes specified, and as illustrated in the drawings.

(Specification, 1s. 3d.; drawing, 1s.)

No. 18376.—20th August, 1904.—JOHN SMITH RAWORTH, of 46, Christchurch Road, Streatham, Surrey, England, Engineer. Improvements in and relating to the control and propulsion of electrically propelled vehicles.

Claims.—(1.) In the control and propulsion of vehicles propelled by electric motors having in the field a shunt winding, providing the motors with a series winding that is entirely independent of the armature-circuit in ordinary running and is placed in circuit therewith in emergencies by movement of the speed-lever to a position as far back as is possible, substantially as described. (2.) For controlling the movement of the speed-lever, and therefore the speed of the vehicle, a slotted plate, the slots in which are so arranged that when it is desired to insert the series winding in circuit with the armatures the speed-lever can be drawn back to a position beyond the ordinary full-field position, substantially as described. (3.) In the control and propulsion of vehicles propelled by electric motors having in the field a shunt winding, the combination and arrangement of parts operating substantially as described, with reference to and shown in the drawings.

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

No. 18379.—30th August, 1904.—WILLIAM STEVENSON, of Grey Street, Devonport, Auckland, New Zealand, Photographer. Improved combined washing-boiler cover, bath-tub, and clothes-carrier.

Claims.—(1.) A combined washing-boiler cover, bath-tub, and clothes-carrier, constructed and arranged substantially as specified, and as illustrated in the drawing. (2.) For the purpose indicated, a cover for a washing-boiler in the shape of a truncated cone closed at its upper end, a rim upon said closed end and a handle therein, and handles opposite to each other near the larger end of the cone, substantially as specified and as illustrated.

(Specification, 1s. 3d.; drawing, 1s.)

An asterisk (*) denotes the complete specification of an invention for which a provisional specification has been already lodged.

NOTE.—The cost of copying the specification and drawing has been inserted after the notice of each application. An order for a copy or copies should be accompanied by a post-office order or postal note for the cost of copying.

The date of acceptance of each application is given after the number.

Extracts from the drawings accompanying the foregoing complete specifications appear at the end of this Gazette.

F. WALDEGRAVE,
Registrar.

Provisional Specifications.

Patent Office,
Wellington, 28th September, 1904.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted as under:—

No. 17988.—1st June, 1904.—RICHARD FRANCIS MARSH, of East Maitland, New South Wales, Australia, Engineer. An improved washing-machine.

No. 18353.—20th August, 1904.—WILLIAM FAIRWEATHER, Sen., JOHN FAIRWEATHER, and WILLIAM FAIRWEATHER, Jun., all of Walter Street, Blenheim, New Zealand, Engineers, &c. Improvements in or relating to flax-strippers.

No. 18363.—25th August, 1904.—UNITED SHOE MACHINERY COMPANY, of Paterson, State of New Jersey, United States of America, a corporation duly organized under the laws of said State of New Jersey, and having a place of business at 205, Lincoln Street, Boston, Massachusetts, United States of America (assignees of George Goddu, of Winchester, Middlesex, Massachusetts aforesaid, Inventor). Improvements in or relating to welt-attaching apparatus.

No. 18365.—25th August, 1904.—THOMAS FRENCH, of Leonora, Western Australia, Engineer. Improved ratchet for ore-feeders.

No. 18371.—25th August, 1904.—EMILY SCHULZE, of Franklin Road, Auckland, New Zealand, Married Woman. An improved catamenial appliance.

No. 18380.—30th August, 1904.—WALTER WILLIAM PILKINGTON, of Victoria Street, Wellington, New Zealand, Accountant, and LUKE NELSON NATTRASS, of Lower Hutt, Wellington, New Zealand, Mechanic. An improved churn.

No. 18398.—3rd September, 1904.—ALICE MARY MCDONALD, of 1, Watson Street, Wellington, New Zealand, Married Woman. A cabinet for preserving eggs in by vapour.

No. 18408.—6th September, 1904.—WILLIAM QUIN, of care of Box 426, Wellington, New Zealand, Accountant. Combined receipt and cheque form.

No. 18427.—3rd September, 1904.—JAMES GRAY, of Dunedin, New Zealand, Engineer. Improved fertiliser-conductor for fertiliser-drills.

No. 18428.—3rd September, 1904.—CHARLES DANIEL BRENT, of Cromwell, Central Otago, New Zealand, Dredgeman. Improvements in cycles.

No. 18431.—8th September, 1904.—HENRY CLAYLANDS FIELD, of Aramoho, Wellington, New Zealand, Civil Engineer. The manufacture of a fire- and earthquake-resisting building-material by the use of pumice instead of gravel or broken stone in the manufacture of concrete for building purposes.