Aug. 9.] THE NEW ZEALAND GAZETTE. 2161

arm having its free end overhanging the mould at an angle corresponding to the inclination of the mould, and means for operating said arm to move the same into and out of a locking-position.

(Specification, 12s.; drawings, 7s.)

No. 21356.—26th June, 1906.—PHILIP GEORGE NUERNBERGER and GEORGE RETTIG, Jun., both of 32 South Jefferson Street, Chicago, Illinois, United States of America, Manufacturers. Type-casting moulds.

Claims.—(1.) A type-casting mould provided with a gate having a jet-forming aperture delivering to and adapted to project within the mould-cavity. (2.) A type-casting mould as set forth in claim 1, wherein the gate is movably mounted within the mould and normally maintained in a position to hold the jet-forming aperture outside the mould-cavity and wherein contact with the metal-supplying device serves to thrust the jet-forming aperture into said mould-cavity. (3.) A type-casting mould as set forth in claim 1, wherein devices are provided to thrust the gate outwardly to break off the jet after the type is formed. (4.) A type-casting mould as set forth in claims 1 and 2, wherein portions or shoulders are provided to engage the base of the type to prevent withdrawal when the jet is broken. (5.) A type-casting mould as set forth, wherein the gate is provided with a key-cavity to form a retaining-tongue on the jet.

(Specification, 6s. 6d.; drawings, 3s.)

No. 21359.—26th June, 1906.—ERNST AUGUST GIESELER, of 121 Eisenacherstrasse, Berlin, Germany, Engineer. Improvements in gravity filters.

Claims.—(1.) In gravity filters, the combination of means to compress the filter-bed in order to produce and maintain a filtering-skin on the top of the filter-bed and means to prevent said filter-skin from being injured, substantially as described and for the purpose specified. (2.) In gravity filters, the combination of an outflow reservoir and a movable outlet opening in said reservoir, substantially as described and for the purpose specified. (3.) Gravity filter in which the outflow of the filtrate takes place below the filter-bed through a siphon (12), the opening of which (13) is placed sufficiently deep under the filter-bed that its suction may overcome the adhesion between the air-bubbles and the sand-grains of the filter-bed, the siphon (12) opening into a tank (16) in which there is below such opening of the siphon (12) an annular outlet which rises and falls with the float (20), thus securing above such outlet a water-column of constant height, substantially as described and for the purpose specified. (4.) Gravity filter in which the outlet of the tank (16) is annular, and is formed by a disc (18) rigidly connected with the float (20), between which disc and the inner wall of the pipe (17) the annular opening for the outflow is formed, which annular opening rises and falls with the float (20), so that there always stands a water-column of the constant height (h¹) above such annular opening, substantially as described and for the purpose specified. (5.) In a gravity filter, the combination of an outlet opening of a reservoir (15), consisting of two perforated plates (21, 22) lying closely above each other, and one of them (22) firmly connected to a float by means of a pipe (20), while the other is attached to an axis passing through pipe and float, and can be turned by means of such axis, substantially as described and for the purpose specified. (6.) Gravity filter in which there is inserted a tank (1) of smaller diameter containing the filter-bed into the upper part of an outer tank (2), the annular space between the two tanks being closed by a bottom so that there is formed below the filter-tank (1) and the annular space a lower space in tank (2) which serves as subsidence-tank for the raw water, and into which the latter is admitted and from which it rises to the filter-bed through a central pipe passing through the filter-bed, the said annular space being used for the purpose of discharging the wash-water, substantially as described and for the purpose specified. (7.) Gravity filter in which a system of collecting-pipes and strainers at the bottom of the filter-bed are provided through which the filtered water as well as the wash-water can freely flow, but which prevent the escape of sand, substantially as described and for the purpose specified. (8.) Gravity filter in which the upper half of the filter-tank is enveloped by an outer tank of larger diameter, thus forming between the two an annular space enveloping the upper half of the filter-tank, and used for admitting the raw water which is to be filtered and for discharging the wash-water, the filter-tank being provided with a system of collecting-pipes and strainers at the bottom, substantially as described and for the purpose specified. (9.) Gravity filter in which the sieves of the strainers are arranged so that the wash-water issuing from them sweeps the entire space between two adjacent strainers, substantially as described and for the purpose specified. (10.) Gravity filter in which the sieves of the strainers are placed at an angle of 90 degrees or less to the filter-bed, substantially as described and for the purpose specified. (11.) Gravity filter in which the sieves are secured in the casing by burning or pressing a rim, and thus jamming the sieves firmly against the face of a rebate, substantially as described and for the purpose specified.

(Specification, 12s.; drawings, 2s.)

No. 21366.—28th June, 1906.—JOSEPH FREDERICK CLARKE, of Alexandra Street, Hunter’s Hill, New South Wales, Australia, Factory-manager. An improved machine for filling bottles or suchlike receptacles with liquid.

Claims.—(1.) In an improved machine for filling bottles or suchlike receptacles with liquid, one or more wedge-shaped devices suitably operated so as to compress and release flexible supply-pipes for the purpose of controlling the flow of liquid. (2.) The improved machine for filling bottles or suchlike receptacles with liquid as described, and illustrated in the drawings.

(Specification, 2s.; drawing, 1s.)

No. 21370.—26th June, 1906.—WILLIAM MCCORD JAMIESON, of Te Papapa, near Onehunga, Auckland, New Zealand, Engineer. An improved pneumatic centre for wheels of bicycles and motor-cars, and for other wheels.

Extract from Specification.—This invention has for its object the providing an inner wave curve or corrugation to the inner rim which outwardly surrounds the pneumatic tire held to surround the hub fitted to the spindle of the wheel when pneumatic tires or bags are fitted to around the hubs of wheels, whereby vibration is reduced and greater comfort is insured.

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

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

No. 21373.—28th June, 1906.—LEWIS GRANT ABRAMS, of Phoenix Chambers, 158 Pitt Street, Sydney, New South Wales, Australia, Broom and Brush Manufacturer and Custom-house Agent (assignee of John Matherson, of Sydney aforesaid, Brush-handle Maker). Improvements in certain descriptions of brooms, brushes, and the like.

Claim.—An improved broom or brush with a handle, the top portion of the said handle is grooved, hollowed, or scooped out, such as shown in Fig. 2, in combination with wire, tin, twine, or other suitable material passing through the groove, and properly secured to the handle with nails, cleats, or other devices so as to firmly hold the bristle, fibre, or hair in the groove of the handle, substantially as described.

(Specification, 2s. 6d.; drawings, 2s.)

No. 21383.—27th June, 1906.—WILLIAM FRASER CLAUGHTON KELLY, of 8 Perham Road, Kensington, Barrister-at-Law, and JOHN ARTHUR BENTHAM, of 36 Beaumont Street, Portland Place, Gentleman, both in London, England. Improvements in and relating to the preparation and development of photographic plates, films, and the like.

Extract from Specification.—According to the present invention, we prepare a concentrated developing-mixture in a thick or semi-fluid condition, and containing as a preservative and alkaline constituent borax, boric acid, or a soluble borate, and this mixture we spread on the back of the plate, film, or the like. We allow the developing-composition to dry, and if, after such a plate or film has been exposed in the camera, it is immersed in water, the water will dissolve the backing, and so become itself a developing-fluid.

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

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