394
THE NEW ZEALAND GAZETTE.
[No. 9

clutch, with a spring fitting over both nut and washer in tension so as to move the nut and washer further apart by sliding up the inclined surfaces of the clutch-face, all substantially as set forth and for the purposes indicated. (2.) In bolts and nuts and washers, in combination, a nut and washer fitted where they meet with inclined clutch-faces, with a spring arranged to continually press nut and washer apart laterally by sliding them up said inclined faces, thus taking up and maintaining any possible slack that may be had by shaking or rattling of the material bolted, all substantially as described and explained, and as illustrated in the drawing. (3.) The taking up of any slack caused by shaking or wearing or the like and solidly maintaining same by means of a nut, washer, and spring, with a lock-nut when needed, used with an ordinary bolt, all substantially as shown on the drawing and described and explained.
(Specification, 3s.; drawings, 1s.)

No. 15887.—19th January, 1903.—ARTHUR KITSON, of York Mansion, York Street, Westminster, England, Managing Director to the Kitson Lighting Company of Great Britain (Limited). Improvements in or pertaining to vapour-burning apparatus.

Claims.—(1.) In vapour-burning apparatus of the kind referred to, the combination of a vertically arranged burner-tube having inlets near its lower end, a perforated diaphragm across its upper end, a diaphragm across the said burner-tube below the level of the said inlets, and a vertical vaporizing-tube, closed at the upper end, passing through the upper and inserted into the lower diaphragm, and arranged to discharge a jet of vapour below the level of the lower diaphragm. (2.) In vapour-burning apparatus of the kind referred to, the combination of a vertically arranged burner-tube having inlets near its lower end, a perforated diaphragm across its upper end, a diaphragm across the said burner-tube below the level of the said inlets, and a vertical vaporizing-tube, closed at the upper end, passing through the upper and inserted into the lower diaphragm, and arranged to discharge a jet of vapour below the level of the lower diaphragm, the discharge-nozzle of the said vaporizing-tube having an upward extension located within the said vaporizing-tube, and forming in the lower portion thereof a trap in which unvaporized oil may collect. (3.) In vapour-burning apparatus of the kind referred to, the combination of a vertically arranged burner tube provided with air and vapour inlets, a perforated diaphragm across its upper end, a diaphragm across the said burner-tube below the level of the said air and vapour inlets, and a vertical vaporizing-tube passing through the upper and inserted into the lower diaphragm, and having a discharge-nozzle in its lower end, whilst its upper end is closed, the said discharge-nozzle having an upward extension located within said vaporizing-tube, and forming in the lower portion of the vaporizing-tube a trap in which unvaporized oil may collect, together with an oil-supply tube arranged to discharge into the said trap, means for conducting air to the vapour-jet, and means for conducting the mixture of air and vapour so formed to the aforesaid air and vapour inlets. (4.) In vapour-burning apparatus of the kind referred to, the combination of a vertically arranged burner-tube provided with air and vapour inlets, a perforated diaphragm across its upper end, a diaphragm across the said burner-tube below the level of the said air and vapour inlets, and a vertical vaporizing-tube passing through the upper and inserted in the lower diaphragm, and having a discharge-nozzle in its lower end, whilst its upper end is closed, together with a mixing tube below the said vaporizing-tube, a condensing-chamber closed at the bottom and having its walls joining the burner-tube at a point above the level of the said air and vapour inlets, and air-inlet tubes extending from apertures in the wall of said condensing-chamber to air-inlets in the said mixing-tube. (5.) In vapour-burning apparatus of the kind referred to, the combination of a burner having an annular perforated diaphragm, a central perforated sleeve forming an inward continuation of the said diaphragm, and a closed-ended vaporizing-tube extending into the space within the said perforated sleeve, substantially as described. (6.) In vapour-burning apparatus of the kind referred to, the combination of a vertically arranged burner-tube, a perforated diaphragm across the upper end, a vertical vaporizing-tube passing through the said diaphragm and having a discharge-nozzle in its lower end, whilst its upper end is closed, a mixing-tube into which the vaporizing-tube nozzle discharges, a condensing-chamber within which the mixing-tube is enclosed, and air-inlet tubes extending from apertures in the wall of the said condensing-chamber to air-inlets in the wall of the said mixing-tube. (7.) Vapour-burning apparatus according to any of the preceding claims wherein suitable means, as wire gauze or a coil or bundle of wire, for causing carbon to be deposited upon itself rather than upon the vaporizing-tube or upon a tube inserted therein are provided in the space between the peripheral wall of the said vaporizing-tube and that of the said inserted tube. (8.) Vapour-burning apparatus of the kind referred to, comprising a vertical vaporizing-tube which is arranged to extend within a mantle, is closed at its upper end, and has within it a tube so shaped as to leave vacant between its peripheral wall and that of the vaporizing-tube a space of small cross-section, into which opens an oil inlet, so that oil supplied therethrough will be compelled to pass up in the said space and be vaporized by contact with the vaporizing-tube as will then descend through the internal tube into a mixing-tube which is provided with means for admitting air from the external atmosphere, and is contained in and opens into a condensing-chamber in communication with the burner, substantially as described, the said space preferably containing a suitable means, as wire gauze or a coil or bundle of wire, for causing carbon to be deposited upon itself rather than upon the vaporizing-tube or upon a tube inserted therein. (9.) The improved vapour-burning apparatus constructed and arranged as described with reference to and shown respectively in Figs. 1, 2, and 3 and in Fig. 4 of the drawings.
(Specification, 6s. 6d.; drawings, 1s.)

No. 15892.—21st January, 1903.—HERMAN CHARLES WOLTERECK, of 3, Edinburgh Mansions, Howick Place, Victoria Street, London, England, Consulting Chemist. Process for producing ammonia by synthesis.

Claims.—(1.) The process for the synthetical production of ammonia, consisting in passing a mixture of air and a gas containing hydrogen in the presence of water-vapour over iron-oxide heated to a dull-red heat. (2.) The process for the synthetical production of ammonia, consisting in passing a mixture of air and a gas containing hydrogen in the presence of water-vapour over an oxygen-carrier metallic oxide heated to a dull-red heat. (3.) The process for the production of ammonia, consisting in passing a mixture of nitrogen and oxygen and a gas containing hydrogen in the presence of water-vapour over iron-oxide heated to a dull-red heat. (4.) The process for the production of ammonia, consisting in passing a mixture of nitrogen and oxygen and a gas containing hydrogen in the presence of water-vapour over an oxygen-carrier metallic oxide heated to a dull-red heat.
(Specification, 2s. 6d.)

No. 15898.—23rd January, 1903.—MURRAY CORRINGTON, of 40, Wall Street, New York, United States of America, Engineer. Improvements in automatic fluid-pressure brake apparatus for railway vehicles.

Claims.—(1.) In a fluid-pressure brake mechanism, the combination with a triple valve having connections leading to a train-pipe, an auxiliary reservoir, and a brake-cylinder respectively, of a supplemental piston for forcing the triple valve into its normal or release position, and a second valve-device, actuated by an increase of fluid pressure independently of the movement of the triple-valve piston, for varying the pressures on said supplemental piston, whereby the same may be actuated to force the triple valve into its normal or release position. (2.) In a fluid-pressure brake mechanism, the combination with a triple valve having connections leading to a train-pipe, an auxiliary reservoir, and a brake cylinder respectively, of a supplemental piston normally exposed to fluid under pressure for effecting the movement of the triple valve into the release position, a passage for releasing pressure from one side of said piston, and a valve-device actuated by an increase of pressure, independently of the movement of the triple-valve piston, for controlling said passage. (3.) In a fluid-pressure brake mechanism, the combination with a triple valve of a recharging-passage for admitting pressure from train-pipe to reservoir while the triple valve is in brake-setting position, a supplemental piston for forcing the triple valve into its normal or release position, and a secondary valve-device actuated by an increase of fluid pressure, independently of the movement of the triple-valve piston, for varying the pressures on said supplemental piston, whereby the same may be actuated to force the triple valve into its normal or release position. (4.) In a fluid-pressure brake mechanism, the combination with a triple valve of a recharging-passage for admitting pressure from train-pipe to reservoir while the triple valve is in brake-setting position, a supplemental piston normally exposed to fluid under pressure for effecting the movement of the triple valve into the release position, a passage for releasing pressure from one side of said piston, and a valve-device actuated by an increase of pressure, independently of the movement of the triple-valve piston, for controlling said passage. (5.) In a fluid-pressure brake mechanism, the combination with a triple-valve device of a recharging-passage for admitting pressure from train-pipe to reservoir while the triple valve occupies the brake-setting position, a valve for controlling said recharging-passage and closing the same while brakes are off, and a supplemental valve-device actuated by a variation of