APRIL 5.] THE NEW ZEALAND GAZETTE. 971

No. 20816.—7th March, 1906.—CHRISTIAN STEFFENSEN, of Puketeraki, Karetane, Otago, New Zealand, Fisherman. An improved crayfish-pot.

Claim.—An improved crayfish-pot made of iron wire or canes of dome shape, having openings communicating with conical tapering tubes for admission of the fish, and a hinged gate, substantially as specified and illustrated in the drawing.
(Specification, 1s.; drawing, 1s.)

No. 20817.—8th March, 1906.—CHARLES BUTTERS, of Berkeley, California, United States of America, Engineer. Vacuum-filtering apparatus.

Claims.—(1.) A vacuum-filter frame having a porous material interposed between two sheets of filtering-fabric, being sewed through or fastened at intervals. (2.) A vacuum-filter frame having a porous material interposed between two sheets of filtering-fabric and a perforated tube for removing fluid from and supplying fluid to the interior of said filter-frame. (3.) The combination in a vacuum-filter frame of a porous material interposed between two sheets of filtering-fabric, the fibrous material and filtering-fabric being sewed or fastened together at intervals, and a perforated pipe for withdrawing and admitting fluid to and from the filter. (4.) A vacuum-filter frame having a porous material interposed between two sheets of filtering-fabric, and a perforated tube for removing fluid from and supplying fluid to the interior of said filter-frame, and means for producing a vacuum in the interior of said frame. (5.) A vacuum-filter frame having a top member or rail, grooves therein, retaining-strips having the under outer edge lower than the portion next to the frame, adapted in combination with said grooves to hold filtering-fabric. (6.) A vacuum-filter frame having a top member or rail, grooves therein, retaining-strips having the under outer edge lower than the portion next to the frame, adapted, in combination with said grooves, to hold filtering-fabric, and means for producing a vacuum in the interior of said frame. (7.) A vacuum-filter frame provided with a filtering-fabric, portions of which are rendered impervious to fluid. (8.) A vacuum-filter frame provided with a filtering-fabric, a narrow rim around the sides of which is rendered impervious to fluid. (9.) A vacuum-filter frame having a porous material interposed between two sheets of filtering-fabric, and means for removing fluid from and supplying fluid to the interior of said filter-frame, and means for producing a vacuum in the interior of said frame. (10.) A vacuum-filter frame having a top member or rail, grooves therein, retaining-strips adapted, in combination with said grooves, to hold filtering-fabric, and grooves in said retaining-strips adapted to deflect fluid from the surface of said filter-frame. (11.) A vacuum-filtering apparatus having a receptacle, a filter-frame, a drum, connections between said drum and filter-frame, an outlet-pipe from said drum, and means for exhausting the air from said drum. (12.) A vacuum-filtering apparatus having a receptacle, a filter-frame, a drum, connections between said drum and filter-frame, an outlet-pipe from said drum, a supply and discharge pipe, means for connecting and disconnecting said supply and discharge pipe from said vacuum drum, and means for exhausting the air from said drum. (13.) A vacuum-filter apparatus, having a filter-frame, a vacuum-drum, connections between said frame and drum, means for exhausting the air from said drum, a discharge-pipe from said drum, and a water seal at the lower end of said discharge-pipe.
Specification, 5s. 6d.; drawings, 2s.)

No. 20823.—8th March, 1906.—INTERNATIONAL STEAM-PUMP COMPANY, a corporation organized and existing under the laws of the State of New Jersey, and having their principal place of business at 114 Liberty Street, City, County, and State of New York, United States of America (assignees of Carl Hermann Jaeger, of Klingenstrasse, Leipzig-Plagwitz, Germany, Engineer). Improvements in centrifugal and turbine pumps and the like.

Claims.—(1.) In a centrifugal, turbine, or similar pump or motor having one or more enclosed impellers mounted to move sidewise under lateral pressure, the construction of the side walls of the impeller and of the delivery passage surrounding the impeller so as to open the impeller at its periphery to one of the chambers at the side of the impeller when the impeller is moved sidewise from its normal position. (2.) The construction for balancing a centrifugal or turbine pump, substantially as shown in the drawings.
(Specification, 5s.; drawing, 1s.)

No. 20881.—20th April, 1905.—CHARLES ELIAS SWEET, of 531 Rosedale Street, Pittsburg, Pennsylvania, United States of America, Engineer. Improvements in means for securing blades or vanes of elastic-fluid turbines.
[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in the United States.]

Claim.—In an elastic-fluid turbine having a plurality of blades or vanes arranged in one or more annular rows, a spacing or locking strip or member passing through a plurality of the blades or vanes in a single row, portions between adjacent blades or vanes being partially cut or sheared laterally and bent or turned over so as to form spacing projections, the end edges of which contact with the faces of the said blades or vanes, substantially as described.
(Specification, 4s.; 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 accepted.

Patent Office,
Wellington, 4th April, 1906.

APPLICATIONS for Letters Patent, with provisional specifications, have been accepted, as under:—
No. 20391.—M. Hogan, grain and seed cleaner.
No. 20545.—P. Wright, gold, &c., extractor.
No. 20572.—F. W. Payne, dredging-tumbler.
No. 20659.—H. Sloane, tube-cutter.
No. 20660.—E. Crook, boot-upper.
No. 20689.—R. Williams, sifting-screen.
No. 20690.—R. Williams, sluice-box.
No. 20698.—J. H. Hickman, show-case.
No. 20699.—J. H. Hickman, show-case.
No. 20750.—W. Henry, wooden bracket for ornamenting buildings, &c.
No. 20767.—H. G. Smith, fencing-standard.
No. 20772.—R. H. Carter, horse-collar.
No. 20774.—C. P. M. Benson and S. Macdonald, crayfish-trap.
No. 20776.—H. V. Gazzard, flooring and ceiling cramp.
No. 20800.—J. Macalister, turnip or plant thinner.
No. 20804.—A. F. Campbell, wearing-strip for threshing-machine concave.
No. 20805.—J. D. Jackson, tap for air-vessel.
No. 20808.—C. Harris and C. Todd, protecting fruit-trees from birds.
No. 20810.—J. E. Broad, fastening for horse-cover.
No. 20815.—H. A. E. Kelly, paper holder or clasp.
No. 20818.—S. E. Evans, incandescent burner.
No. 20819.—G. Ridgway, atmospheric filter.
No. 20820.—M. L. Severy and G. B. Sinclair. Electrical musical instrument.
No. 20821.—G. F. Hutchinson, acetylene-generator.
No. 20824.—A. G. Davies, unloading coal from railway-trucks.
No. 20828.—E. W. and G. H. Buckeridge, electrical conductor.
No. 20830.—A. Marr, curtain-pole support.
No. 20834.—R. Dunne, shaving-appliance.
No. 20836.—H. T. Twiss, milk-can.
No. 20839.—F. Gossler, linotype-machine.
No. 20840.—A. M. Anderson, hose of Westinghouse brake.
No. 20843.—A. E. Woodhouse, electric-conductor conduit.
No. 20846.—G. Ullrich, classifying or vanning ores.
No. 20847.—G. Ullrich, magnetic separator.
No. 20849.—H. C. Becker, extracting fat and wool from fleshings.
No. 20850.—H. M. Crimp, egg-beater.
No. 20852.—J. Delehanty, rotary engine.
No. 20853.—A. E. Thomas, rock-drill (J. Arthur).
No. 20854.—A. Gillies, teat-cup for milking-machine.
No. 20856.—J. Nicholson, centrifugal gold-separator.
No. 20860.—J. O. Galbally, window-sash adjuster.
No. 20861.—R. E. Brett, astronomical instrument.
No. 20863.—A. Curwood, clothes-peg.