Dec. 12.] THE NEW ZEALAND GAZETTE. 3533

as described. (6.) In attachments of the class indicated, the combination of parts substantially as illustrated in Fig. 3, as described.

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

No. 22224.—20th December, 1906.—ALEXANDER JOHN WEBSTER, of Pirron Yallock, Victoria, Australia, Dairy-farmer. An improved milking-bail.*

Claims.—(1.) An improved bail, consisting of a bail-stick suspended from overhead and removably pivoted in a socket at its lower end, and having means to lock it in its closed position, substantially as and for the purpose set forth. (2.) An improved bail, comprising a removable bail-stick having at its lower end a pivot pin adapted to fit into a socket fixed near the floor, a pair of overhead cross guide-bars to guide the upper end of said bail-stick, a strap over said guide-bars, and a short bar hinged thereto and connected by a link with the upper end of said bail-stick, substantially as and for the purposes set forth, and as illustrated.

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

No. 22294.—8th January, 1907.—FRANK COOPER, of Christchurch, New Zealand, Manufacturer. An improved method of street-watering.*

Claims.—(1.) A method of street-watering by means of pipes laid at or near road-surface, water controlled by a valve and eventually passing through nozzles against sprayers, substantially in the manner and for the purpose described, and shown in drawings. (2.) A sprayer with jet nozzle and sprayer cone as applied for purposes of street-watering, substantially as described in specifications and shown in drawings.

(Specification, 2s. 6d.; drawing, 1s.)

No. 22322.—17th January, 1907.—JAMES SMART, of Auckland, New Zealand, Potter. An improved ventilating-cover for traps and drains.*

Claim.—A ventilating-cover for traps and drains, consisting of a pipe formed with apertures in its wall near the top end, and a cap or hood extending over such end and having its lower edge depending around the pipe and extending to below the level of the apertures therein, substantially as specified.

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

No. 23107.—19th July, 1906.—PERCY CLAUDE CAMERON ISHERWOOD, Ph.D., Chemist, of The Oaks, High Road, Wealdstone, England. Improvements relating to the treatment of refractory zinc-lead ores.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claims.—(1.) A process for the treatment of refractory zinc-lead ores in which a hot concentrated solution of an ammonium-salt is employed, for the purpose and substantially as described. (2.) In a process for the treatment of refractory zinc-lead ores according to claim 1, the employment of ammonium-chloride for the purposes, in the manner, and substantially as described. (3.) In a process for the treatment of refractory zinc-lead ores according to claim 1, the employment of ammonium-sulphate for the purposes, in the manner, and substantially as described.

(Specification, 7s.6d.)

No. 23476.—16th September, 1907.—ANDREW HERBERT BYRON, Civil Engineer, and THOMAS MILLAR SCOTT, Woolbroker, both of Wellington, New Zealand. Improved apparatus for pressing wool or any other material that requires pressing into bales where a heavy pressure is required.

Claims.—(1.) Press fitted with four or more cog-wheels geared with two speeds, for pressing wool, cotton, or such-like, the cog gearing to lift and lower rack ratchet, as described in specification, and shown on plan. (2.) We claim the whole of the invention as described in specifications and shown on drawings.

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

No. 23533.—28th September, 1907.—WILLIAM HENRY JONES RIDLEY, of Penrose, Auckland, New Zealand, Engineer. A furnace for the purpose of extracting antimony and other metals and ingredients from ores.

Claims.—(1.) A regulation-valve for the purpose of regulating quantity of air admitted into water-box, as specified in specification. (2.) A regulation-valve regulating amount of vapour into ashpit, as shown in plan and specified in specification. (3.) A rotary fan, as shown in plan, and for the purpose as specified in specification. (4.) A valve for the purpose of regulating the quantity of gas admitted into the retort, as shown in plan and for the purpose as specified in specification. (5.) A retort with metal chamber, as shown in plan and for the purpose as specified in specification. (6.) A metal mould, as shown in plan and as specified in specification.

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

No. 23572.—6th November, 1906.—THE LAMSON PNEUMATIC TUBE COMPANY, LIMITED, of 20 Cheapside, London, England, Manufacturers (assignees of Henry Burl, of 6 Cedars Terrace, Portland Avenue, Stamford Hill North, England, Draughtsman). Improvements in pneumatic-despatch system.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claim.—In a pneumatic-despatch system, a foot-bellows provided with a valve, and adapted under the control of such valve to be actuated by the direct action of the foot and by a spring and [or] gravity respectively, so as to compress air into the despatch-tube on one of its strokes and to produce a partial vacuum in said tube on the opposite stroke, substantially as and for the purpose specified.

(Specification, 5s. 9d.; drawing, 5s.)

No. 23595.—15th October, 1907.—GEORGE TIFFIN STEWART, Civil and Mechanical Engineer, and HECTOR HALHEAD STEWART, Mechanical Engineer, both of Te Maire, Featherston, New Zealand. An expanding differential clutch.

Claim.—We claim that the expanding driving-blocks B, the recess C, the washer H, and the method of applying them are new and novel. The particular advantage is that both hubs must drive together in either direction, excepting when running faster than the driven shaft, thus allowing both wheels to drive together in any class of ground. It is light, simple, cheap, and durable.

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

No. 23598.—16th October, 1907.—NICHOLS-FIFIELD SHOE MACHINERY COMPANY, of Portland, State of Maine, a corporation duly organized under the laws of the said State of Maine, carrying on business as shoe-machinery manufacturers, and having a place of business at 53 High Street, Boston, Massachusetts, United States of America (assignees of Harry Lyon, of Brockton, Plymouth, Massachusetts, Machinist). Improvements in in seam-trimming machines.

Claims.—(1.) An in seam-trimmer comprising a cutter, and an adjustable or other gauge arranged to engage the line of stitches of the in seam of a shoe and hold the same a predetermined distance away from the cutter, whereby the distance of the work from the cutter is determined solely by the engagement of the gauge with the in seam stitches. (2.) An in seam-trimmer comprising a cutter, and a gauge arranged to engage the outer side of the in seam of a shoe and hold the same a predetermined distance away from the cutter, whereby the distance of the work from the cutter is determined solely by the engagement of the gauge with the in seam at the crease or angle in the welt. (3.) An in seam-trimmer comprising a cutter, and a gauge constructed to enter the stitch-depressions of the in seam of a shoe and guide the same at a predetermined distance from the cutter, whereby the distance of the work from the cutter is determined solely by the engagement of the gauge with the in seam stitches. (4.) An in seam-trimmer comprising a cutter, and a gauge provided with