APRIL 22.] THE NEW ZEALAND GAZETTE. 1141

No. 25677.—12th March, 1909.—CHARLES EDWARD MARTIN, of Durban, Natal, South Africa, Engineer. Improvements in or relating to rotary pumps or the like.

Claims.—(1.) In a rotary pump or the like, the combination with a sliding blade carried by a rotable member (for example, A²) of a chamber having concentric portions D, D¹, and D², D³, over which the blade travels during the propelling movement, and eccentric portions that are traversed only when the blade is relieved from propelling-pressure. (2.) In a rotary pump or the like having a sliding blade and wherein the pressure is equalised on both sides, the combination with a rotatable member of two or more sliding blades carried thereby, and an enclosing chamber whose walls are concentric with the rotatable member for a distance at least equal to that embraced between the end of one blade and that of the next as measured whilst these traverse such concentric portion, for the purpose described. (3.) In a rotary pump of the type described, the combination of a rotatable member or driver A² that is made in the form of a box and carries the sliding blades C, C¹, a detachable cover A³ for the driver, whereby access may be had to the blades, and a detachable cover B² to the enclosing-chamber B, whereby access may be had to the cover A³. (4.) The rotary pump of like device, substantially as described, and as illustrated in the drawings.

(Specification, 5s. 6d.; drawing, 2s.)

No. 25692.—13th March, 1909.—JAMES HAMLIN WALKER and PETER WALKER, Sanitary Engineers, and JOHN ARTHUR BROWN, Manager of Foundry, all of Dunedin, New Zealand. Improvements in cocks and taps.

Claims.—(1.) In screw-down cocks and taps, a valve having an enlarged screwed spindle and screw, which, with its gland, is of sufficient size to allow the said valve to be passed to its seat, combined with a renewable seat, under which is a back valve, normally out of use, but which prevents the flow of water or steam when the working-valve is removed, and a loose ring to stop the packing between the said gland and spindle, all substantially as shown on the drawing and as set forth. (2.) In screw-down cocks or taps, in combination, a spindle and gland of sufficient size to allow of the passing of the valve to its seating, with a loose ring for stopping the packing, and a back valve on the other side of the seating kept from being lost by a wire bar, the whole forming a watertight simple tap or cock having but few parts, and one that keeps back the flow when the working-valve is removed, all substantially as set forth. (3.) In screw-down cocks or taps, in combination, a spindle, with its screw, an ordinary working-valve, a renewable seating, faces both sides, a back valve for preventing the flow when the working-valve is removed, a loose ring to stop packing, and a guard for preventing loss of the back valve, all substantially as set forth.

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

No. 25697.—9th April, 1908.—FRANK ALONZO BEAL, of 77 Washington Street, Haverhill, Massachusetts, United States of America, Manufacturer. Improvements in turned shoes.

[NOTE.—This is an application under the International and Intercolonial Arrangements, the date given being the official date of the application in the United States of America.]

Extract from Specification.—In making my improved shoe I first sew or otherwise secure a welt to the top of the sole, and then I sew the upper, wrong side out, to the top of the welt by means of stitches that interlock with the stitches or fastening-means that secure the welt to the sole. The upper is sewed to the welt in such a way that after the shoe is turned right side out the outer edge of the welt projects beyond the upper in the same manner as that of an ordinary welt shoe does, thus giving to the shoe the appearance of a welt shoe. The interlocking of the stitches that sew the welt to the sole with the stitches that sew the upper to the welt locks both sets of stitches firmly in place, and makes a very strong shoe, in which the stitches are not at all liable to be pulled out, even if they become broken.

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

(Specification, 7s. 6d.; drawing, 1s.)

No. 25721.—20th March, 1909.—EDWIN BURT, of El Oro, Estado Mexico, Mexico. Filters.

Claims.—(1.) A filter comprising a rotatable shell, heads which close the ends thereof, means for rotating said shell, and a filtering medium secured to the inner surface of said shell, said filtering medium comprising plates secured to the inner surface of said shell provided with holes or openings which extend through the same, and with channels on the sides thereof adjacent to said shell which connect said holes or openings. (11.) A filter comprising a rotatable shell provided on its inner surface with a filtering medium, and means for dislodging the filter-cake from said medium. (13.) A filter comprising a rotatable shell, heads which close the ends thereof, means for rotating said shell, a filtering medium secured to the inner surface of said shell and pipe connections to said shell, said connections comprising a pipe adapted for connection with a source of supply of fluid under pressure, whereby a fluid pressure may be introduced into said shell and filtration effected under pressure in order to form a filtrate made up of a plurality of separate layers, each of which will be separately subjected to pressure as it is deposited, whereby a filtrate will be formed sufficiently firm and strong to “stand up” and adhere to the filtering medium unsupported.

[NOTE.—Claims 2 to 10 and claim 12 are omitted.]

(Specification, £1; drawing, 3s.)

No. 25725.—22nd March, 1909.—THOMAS WALLACE, of Christchurch, New Zealand, Merchant. Improved manner and means for drying bricks ready for the kiln.

Claims.—(1.) The described manner of drying bricks preparatory to placing them in the kiln, consisting of stacking them on trucks and causing them to pass gradually through a closed building, said building having a pit extending over the whole area below the trucks, a chamber in which slow combustion takes place formed at one end of the pit and occupying the full width of the same, openings formed in said chamber to allow the hot gases to pass into the building and pit and circulate around the bricks, and a chimney formed at the other end of the building through which the hot gases escape into the air, substantially as and for the purpose set forth. (2.) The improved means of drying bricks ready for the kiln, substantially as described, and as illustrated in the sketch.

(Specification, 4s. 6d.; drawing, 1s.)

No. 25729.—24th March, 1909.—THOMAS GARE, of Bramble Beach, Warren Drive, New Brighton, Chester, England, Engineer. Improvements in and connected with the manufacture of sheet indiarubber and the coating or facing of fabrics and the like with indiarubber.

Extract from Specification.—My improved process of manufacturing sheet indiarubber and of coating or facing fabric or the like with indiarubber consists essentially in feeding the waste or vulcanised rubber in powder form or in a plastic condition upon a travelling endless surface, then subjecting the rubber on the said surface to the pressure of a rotary surface, which presses the rubber to the desired density and at the same time frees it from air; then, whilst still under pressure and protected from air, subjecting the rubber by the said travelling surface to the heat of a rotary surface, which causes it to reform or be vulcanised according to the form in which the rubber is used and degree of heat applied.

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

(Specification, 7s. 6d.; drawings, 1s.)

No. 25732.—24th March, 1909.—JAMES EDWIN GEE, Engineer, and ELIZABETH GEE, wife of the said James Edwin Gee, both of 72 Fleet Street, London, England. Improvements in or relating to apparatus for washing, scrubbing, whitening, or similarly treating floors, door-steps, and the like.

Extract from Specification.—The essential features of our invention consist in providing a scrubbing-brush rigidly fixable in the proper position at the lower end of a handle of suitable length so that an operator can manipulate it without kneeling, in combination with a cloth or swab by which wet, slop, and dirt can be collected and swabbed up, and means for effectually and rapidly drying said cloth or swab. The present improvements also consist in providing means for wringing out the cloth or swab by one movement of the hand