2460

THE NEW ZEALAND GAZETTE.

therethrough from its free surface, substantially as described.
(8.) A screen apparatus comprising an inclined frame vibrating in a direction across the plane of its incline and having the screen-cloth thereon, and having below the same a plate or plates with upwardly directed ends extending within a short distance of the screen-cloth and preferably with openings between the plates for the escape of the material, said upwardly directed ends causing the water to pass upwardly through the screen as it proceeds down the incline, substantially as described. (9.) An inclined screen with means for vibrating it in a direction across the plane of its incline, and a plate or plates arranged closely below the screen-cloth and vibrating therewith, with means for supplying water, substantially as described.

(Specification, 12s.; drawing, 6s.)

No. 19911.—19th August, 1905.—JOHN HANSEN, of Taupiri, Auckland, New Zealand, Storekeeper. An improved gum-hook.

Claim.—The improved gum-hook specified, having the ring formation at top of the solid rod slidably fitted within the hollow or tube rod at a point below the handle of the hook, for the purpose set forth, substantially as described and illustrated.

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

No. 19913.—22nd August, 1905.—WILLIAM EADIE CLARK, of 9, Picton Avenue, Wellington, New Zealand, Cabinet-maker. An improved draught, rain, and dust excluder for doors.

Claims.—(1.) The special rebating of the door-bar at a particular angle so as to form an overlap or protection of the working parts from the weather when beating against an outer door. (2.) The suspending of the flap to the door-bar with a flexible spring wire. (3.) The bow spring which when the bar is fastened to the door gives an additional pressure on the flap when it touches the door-stop.

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

No. 19923.—23rd August, 1905.—FOUNTAIN ANTHONY WINTER, of “Preston,” Bent Street, North Sydney, New South Wales, Australia, Managing Salesman. Improvements in machines and tools for cutting dovetail mortises and tenons.

Extract from Specification.—The distinctive characteristics of this invention are as follows: (a) The machine supporting one or more revolving spindles for cutting slots or one or more pairs of revolving spindles for cutting tenons; (b) the cutting-tool having a revolving cutting-edge tapering from the bottom or outer end to the top or inner face, adapted to cut its whole depth at once, and to be controlled so to do; (c) the directing tool or template parallel to and adapted to be affixed to the surface of the body to be cut or fashioned, and having a directing-slot or shaped edges to control the relative travelling-positions of the work and the cutting tool or tools; and (d) travelling-devices or means whereby the cutting-tool controlled as to depth and direction by the template is travelled in the work, or whereby the work and template (controlling the depth and direction of the cut) is travelled past and on the tool.

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

(Specification, 9s.; drawings, 2s.)

No. 19946.—30th August, 1905.—DRUITT HALPIN, of 17, Victoria Street, Westminster, London, England, Consulting Engineer. Improvements in the construction of and method of working thermal-storage apparatus in connection with steam-generators.

Extract from Specification.—Each storage reservoir is connected to the steam-space of the drum B by a tube C, which has an extension C1 within the reservoir so as to establish a free communication between the steam-space of the drum and those of the reservoirs A, A1. The feed-water is introduced separately into each of the reservoirs by a pipe D provided with a shut-off cock, and the contents of a reservoir when fully charged with water at about the same temperature as that of the boiler is discharged, when required, into the drum B through a pipe E provided with a valve E1 operated by the valve - rod E3. An overflow-pipe F connected to the pipe E serves to carry off any excess of water from the reservoir into the drum B. G is a water-level gauge for indicating the height of the water in the reservoir.

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

(Specification, 10s.; drawings, 6s.)

[No. 91

No. 19961.—31st August, 1905.—JOHN ISAAC MOSS, of 196, Vere Street, Abbotsford, Victoria, Australia, Commission Agent. Improvements in self-acting window-locks.

Claims—(1.) In improvements in self-acting window-locks and in combination, a bearing for attachment to the lower sash, a rectangular plate for attachment to the upper sash, said rectangular plate having an integral cheek, an extension of said cheek, a hole in said cheek, a sector or guide made integrally with the said rectangular plate, a shoulder on said sector or guide, a lug protruding from the rectangular plate, a hole in said lug, a pivot-pin passing through and resting in the hole in said lug and in the hole in the cheek, an elongated slot in the rectangular plate, which slot is bridged by the said pivot-pin, a semicircular disc suspended by the said pivot-pin and capable of a radial movement between the said cheek and the said sector or guide, said semicircular disc having its outer half lightened and provided with strengthening ribs and its inner portion of heavier construction than the outer portion, a stop upon the top of said inner portion, all as and for the purposes described, and as illustrated in the drawings. (2.) In improvements in self-acting window-locks, a bearing for attachment to the lower sash, a rectangular plate for attachment to the upper sash, said rectangular plate having an integral cheek, an extension of said cheek, a hole in said cheek, a sector or guide made integrally with the said rectangular plate, a shoulder on said sector or guide, a lug protruding from the rectangular plate, a hole in said lug, a pivot-pin passing through and resting in the hole in said lug and in the hole in the cheek, an elongated slot in the rectangular plate, which slot is bridged by the said pivot-pin, a semicircular disc suspended by the said pivot-pin and capable of a radial movement between the said cheek and the said sector or guide, said semicircular disc having its outer half lightened and provided with strengthening ribs and its inner portion of heavier construction than the outer portion, a stop formed integrally upon the top of said inner portion, an incut across the top of the said inner portion, in combination with a pawl, said pawl having its lower end forked and its upper end weighted or of heavier construction, a hole in said upper end, a corresponding hole in the cheek of the rectangular plate, a pivot-pin passing through and resting in said holes and suspending said pawl, an extension to said pawl, an elongated slot in said rectangular plate through which said pawl-extension passes, a depression in the rectangular plate around such elongated slot, a circumferential slot in the inner portion of the semicircular disc to accommodate the said pawl, all as and for the purposes described, and as illustrated in the drawings.

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

No. 19962.—31st August, 1905.—JOHN GEORGE LEYNER, of the Hotel Metropole, Denver, Colorado, United States of America, Manufacturer of Mining Machinery. A hammer-piston, drill-bit striking-pin, feed-screw-rotating rock-drilling engine.

Extract from Specification.—My invention relates to improvements in rock-drilling engines, and the objects of my invention are—(1) To provide a hammer-piston, drill-bit striking-pin, feed-screw-rotating rock-drilling engine. (2.) To provide a striking-pin for the hammers of piston-hammer drills. (3.) To provide a drill-bit-rotating device for piston-hammer rock-drills that operate through the medium of the rotation of the drill-bit feed-screw. (4.) To provide a striking-pin member that is interposed between the piston-hammer and the drill-bit, and that is adapted to be struck by the piston-hammer during its reciprocal strokes in its cylinder and impart the blows it receives from the piston-hammer to the end of the drill-bit. (5.) To provide a manually operated drill-bit-rotating device for rock-drilling engines that operates to rotate the drill-bit by manual rotation of the feed-screw. (6.) To place a hardened-steel compensating-reciprocal-movement striking-pin member between the piston-hammer and the drill-bit of fluid-pressure drills. (7.) To provide a drill-bit-rotating device for piston-hammer rock-drills that operates through the medium of the rotation of the drill-bit feed-screw, and that contains a hammer and drill-bit pin between the piston-hammer and the drill-bit. (8.) To provide a combined drill-bit-rotating and drill-bit-feeding device that operates through means connected with the manual rotation of the drill-bit’s feed-screw. (9.) To provide a manually operated drill-bit-rotating device for rock-drilling engines that operates to rotate the drill-bit by manual rotation of the feed-screw. (10.) To provide a manually operated drill-bit-rotating and drill-bit-feeding device that operates through the medium of the rotation of the feed-screw that is especially designed for use with piston-hammer rock-drills. (11.) To provide a drill bit-rotating device that is operatively arranged to effect the rotation of the feed-screw by the manual rotation of the feed-screw and suitable gearing. (12.) To provide means within the drilling-engine that will enable the users to employ for rock-cutting drill-bits any form or character