1754
THE NEW ZEALAND GAZETTE.
[No. 49

No. 23640.—22nd October, 1907.—JOHN RUTHERFORD PARK, a member of the firm of A. J. Park and Son, of 131 Princes Street, Dunedin, New Zealand, Registered Patent Agents (nominee of “Z” Electric Lamp Syndicate, Limited, of 20 St. Helen’s Place, London, E.C., England—the assignees of Hermann Zerning, of Johann Sigismundstrasse 11, Halensee, near Berlin, Germany, Electrical Engineer). Improvements relating to the manufacture of filaments for electric incandescent lamps.*

Claims.—(1.) In the manufacture of tungsten-filaments for incandescent electric lamps, mixing tungsten-hydride with a binding agent containing nitro-cellulose, and squirting the filaments therefrom. (2.) In the manufacture of tungsten-filaments for incandescent electric lamps, the employment of a binding material consisting of a solution of nitro-cellulose mixed with an oily or fatty substance such as castor-oil. (3.) In the manufacture of tungsten-filaments for incandescent electric lamps, mixing tungsten-hydride with a solution of nitro-cellulose, amylacetate, and castor-oil before squirting the mass into filaments. (4.) In glowing filaments produced according to the previous claiming clauses by heating, painting the interior of the vessel containing the filaments with a paste consisting of zirconium-hydride and amylacetate. (5.) The process of manufacturing tungsten-filaments for incandescent electric lamps which consists in reducing tungstic acid to tungsten-hydride by heating with metallic zinc in the presence of hydrogen, mixing the tungsten-hydride powder with a binding agent of the kind described, squirting the mass into filaments, and glowing the filaments at a high temperature in the presence of charcoal. (6.) The described process of converting tungstic acid into tungsten-hydride, and producing therefrom filaments of metallic tungsten for incandescent electric lamps.

(Specification, 3s. 6d.)

No. 23881.—3rd January, 1908.—HOULDER BROTHERS AND COMPANY, LIMITED, of 146 Leadenhall Street, London, England, Shipowners, and GEORGE ANDERSON, of Malmesbury Place, Shirley, Southampton, Hampshire, England, Engineer. Improvements in or connected with the storing of chilled meat and the like.

Claim.—The method of storing chilled meat and the like, consisting in placing the meat or the like in a chamber which has been previously cleansed and sterilised, and into which is admitted a supply of air cooled to the temperature at which the chamber is maintained, any gases or vapours which may be given off by the meat or the like being withdrawn when necessary, and replaced by fresh air cooled to the temperature above mentioned, substantially as described.

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

No. 24013.—19th February, 1908.—AUTO-HYDRAULIC LIMITED, of 108A Cannon Street, London, E.C., England (assignees of Albert Edward Hodder, of 85 Algernon Road, Lewisham, London, S.E., England, Engineer). Improvements in or relating to automatic water-elevators.

Claims.—(1.) In a water-elevator, the combination with an upper closed tank having a valve-controlled water-inlet leading from the source and an outlet for water under pressure, of a lower pressure-tank having an outlet for compressed air at the top leading to the top of the upper closed tank and arranged to receive water and air under pressure, and an aerating-tank at the level of the source, supplied with water from the source and arranged to supply air-charged water to the lower pressure-tank. (2.) In a water-elevator, the combination with an upper closed tank having a valve-controlled water-inlet leading from the source and an outlet for water under pressure, of a lower pressure-tank having an outlet for compressed air at the top leading to the top of the upper closed tank and arranged to be alternately filled with water and emptied, and an aerating-tank at the level of the source, supplied with water therefrom and arranged to supply air-charged water to the pressure-tank. (3.) In a water-elevator of the type described, the employment of an aerating-tank from which air-charged water is supplied to a pressure-chamber at a lower level, substantially as and for the purpose described. (4.) In a water-elevator of the type described, the employment of an aerating-tank having a perforated diaphragm and a division plate, substantially as and for the purpose described. (5.) In a pressure-tank for a water-elevator of the kind described, a water-operated mechanism comprising a bell-float in which air is entrapped under pressure, whereby on release of the pressure outside the float the entrapped air suddenly expands and an outlet-valve is opened suddenly and completely, and is thereupon automatically retained open until the water escapes, substantially as described. (6.) In a water-elevator of the kind described, a pressure-tank as covered by claim 5 comprising a vessel with a compressed-air conduit at the top, an outlet-valve at the bottom, and a water-operated mechanism which opens the outlet-valve suddenly and completely, and automatically retains it open until the water escapes and then closes it suddenly, substantially as described. (7.) In a water-elevator of the kind described, a pressure-tank as covered by claim 5 comprising a vessel with a compressed-air conduit at the top and an outlet-valve at the bottom, a bell-float attached to the outlet-valve, and a detent operated by a second float at the bottom whereby the outlet-valve is suddenly opened when the pressure-tank is filled and suddenly closed when it is emptied. (8.) In a pressure-tank for a water-elevator of the type covered by claim 5, the combination with a vessel having a water-inlet E, a water-outlet F1, and a compressed-air outlet F2, of a valve G connected to a bell-float G2 by a spindle having a projection G3 and a detent J operated by a float J1 at the bottom of the tank, substantially as and for the purpose described. (9.) In a water-elevator, the combination with an upper closed-tank having a valve-controlled water-inlet leading from the source and an outlet for water under pressure, of a lower pressure-tank having an outlet for compressed-air at the top leading to the top of the upper closed-tank, an aerator at the level of the source supplied with water therefrom, a downtake-pipe arranged to supply air-charged water to the pressure-tank, and an uptake-pipe to lead water from the pressure-tank up to the level of discharge. (10.) In a water-elevator of the type covered by claim 9, an upper reservoir comprising a vessel B having a water-inlet valve C1, a water-outlet pipe B1, an air-inlet valve P, and an air-vent O, and means such as the floats Q R1 and projections O4 R for opening the valve P and closing the vent O when the reservoir B is filled with water, and for suddenly opening the valve O and closing the valve P when the reservoir B is emptied of water.

(Specification, 12s. 6d. ; drawing, 2s.)

No. 24081.—8th March, 1907.—WILLIAM JETHRO STURGESS, of 29 Cromer Road, Balsall Heath, Birmingham, England, Engineer. Improvements in frictional bearings for looking-glasses, movable blind-rollers, and other similar purposes.

[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 hinge or swivelling bearings of the kind referred to, the employment of pivoted wings or their like, having embracing surfaces above and below their pivot centres, whose said surfaces are made to embrace a journal upon the moving body, substantially as set forth and described, and for the purposes specified.

(Specification, 3s. 6d. ; drawing, 2s.)

No. 24269.—14th April, 1908.—EDWARD HALFORD STRANGE, Technical Research Chemist, and CHARLES ALBERT PIM, Chemical Engineer, both of 7 Staple Inn, London, England. Improvements in and apparatus for the manufacture of thin sheets, or foil, or strips, or ribbons, of zinc, lead, or other metal or alloy.

Claims.—(1.) The manufacture of thin sheets, or foil, or strips, or ribbons, of zinc, lead, or other metal or alloy, of the character aforesaid, by causing the molten metal or alloy to be projected on to and wiped up by a cooled surface moving rapidly so as to draw out the metal or alloy into a thin form, substantially as explained. (2.) For the manufacture of thin sheets, or foil, or strips, or ribbons, of zinc, lead, or other metal or alloy of the character aforesaid, an apparatus, consisting of or comprising a receptacle for the molten metal or alloy, means for keeping the said metal or alloy molten, an outlet from the said receptacle, a surface in close proximity to the said outlet, means for rapidly moving the said surface so as to draw out the metal or alloy into a thin form, and means for continuously cooling the said surface, without the application of moisture to such surface.

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