the stretcher when it has been folded up, substantially as set forth. (3.) The improvements in means for providing sleeping-accommodation in railway-carriages constructed and combined and operating substantially as specified, and illustrated in the drawings.

No. 31119.—29th March, 1912.—EDWIN PHILLIPS, of 264–268 Flinders Street, Melbourne, Victoria, Australia, Patent Attorney and Engineer (nominee of the Gesellschaft Für Drahtlose Telegraphie m.b.H., of Tempelhofer Ufer 9, Berlin, S.W., Germany, Manufacturers, assignees of Alexander Meissner, of Tempelhofer Ufer 9, Berlin, Germany, Engineer). Improvements relating to spark-gaps for use in electric circuits adapted for rapid electric oscillations.

Claim.—(1.) In a damping-out spark-gap for use in the production of rapid electric oscillations, the construction in which one or both of the opposing faces of the electrodes is or are formed with suitable projections so that, after the spark has been formed at a place where the distance between the electrodes is the shortest, the spark-discharge will become elongated and spread out over a greater cooling-surface, substantially as described. (Specification, 3s. 9d.)

[Note.—Here follow two other claims.]

No. 31120.—29th March, 1912.—EDWIN PHILLIPS, of 264–268 Flinders Street, Melbourne, Victoria, Australia, Patent Attorney and Engineer (nominee of Gesellschaft für Drahtlose Telegraphie m.b.H., of Tempelhofer Ufer 9, Berlin, S.W., Germany, Manufacturers, assignees of Georg Graf von Arco, of Tempelhofer Ufer 9, Berlin, Germany, Engineer). Improvements relating to wireless installations.

Claim.—(1.) In a wireless-telegraphy station, an arrangement comprising two antennas, one of which is formed as an aerial conductor serving for transmitting purposes, while the other is formed as an earth antenna and serves either alone or in combination with the aerial antenna for receiving purposes, substantially as described. (Specification, 5s. 6d.)

[Note.—Here follow four other claims.]

No. 31121.—29th March, 1912.—EDWIN PHILLIPS, of 264–268 Flinders Street, Melbourne, Victoria, Australia, Patent Attorney and Engineer (nominee of Gesellschaft für Drahtlose Telegraphie m.b.H., of Tempelhofer Ufer 9, Berlin, S.W., Germany, Manufacturers, assignees of Friedrich Bracker-bohm, of Wilhelmsruh, near Berlin, Germany, Engineer). Improvements relating to masts for use in wireless-telegraph installations.

Claim.—(1.) A mast for use in wireless telegraphy, consisting of a plurality of separate elements which are insulated electrically one from another, and are supported one upon another by suitable swivel joints, such as ball-and-socket supports, while each element is held in position separately by means of insulated wires anchored to the ground, substantially as described. (Specification, 2s. 3d.)

[Note.—Here follows one other claim.]

No. 31122.—1st April, 1912.—CLAUDE ALLEN PORTER TURNER, of No. 816 Phoenix Building, Minneapolis, Minnesota, United States of America, Civil Engineer. Reinforced-concrete construction.

Claims.—(1.) An arrangement of reinforcement for a column-supported slab of concrete, comprising circumferential cantilever heads at the tops of the columns in the slab, and slab-reinforcement extending from said heads, throughout the slab, between the columns. ... (4.) An arrangement of reinforcement for a column-supported slab of concrete, comprising belts of reinforcement extending from column to column directly and obliquely, an oblique belt of reinforcement reaching from one column to another where the distance between such columns is greater than the shortest distance between two columns on an oblique line. (Specification, 6s.)

[Note.—Here follow seven other claims.]

No. 31125.—2nd April, 1912.—ARTHUR REGINALD ANGUS, formerly of Spit Road, Mosman, New South Wales, Australia, but now of Glenmore House, Glenmore Road, Minehead, Somersetshire, England, Solicitor. Improvements in or relating to railway safe-running devices “EE.”

Claim.—(1.) Apparatus characterized by the use of factors of safety, wherein railway-tracks are bonded and divided into different sections, including one or more sections in which a there are railway switches or points, and b there are no railway switches or points, and means being placed on or about any suitable parts of the railway-tracks, and means used on an adapted train whereby an automatic intimation or warning (either visual or audible) will be given on the adapted train as to whether it is safe or not safe for the adapted train to run on either of the said sections a or b, and, where required, the said adapted train will be automatically stopped. (Specification, £1 17s. 6d.)

[Note.—Here follow thirty-one other claims.]

No. 31145.—4th April, 1912.—WALTER CLEMENTS REED, of Avondale, Auckland, New Zealand, Coachbuilder. A mixture for cleaning and polishing oilcloth, linoleum, and the like.

Extract from Specification.—The mixture is made by the combination of oil of turpentine, lysol, and Jeyes’s fluid, in the proportions of nine parts of oil of turpentine, one part of lysol, and one part of Jeyes’s fluid. (Specification, Is. 6d.)

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

No. 31156.—11th April, 1912.—THERMO-ELECTRIC COMPANY, a corporation of California, doing business at San Francisco, California, United States of America (assignees of Milton Henry Shoenberg, residing at 2901 Pacific Avenue, San Francisco aforesaid, Electrician). An improved electric water-heater.

Claim.—(1.) The short-circuiting plate connecting metal parts at the inlet and outlet openings. (2.) The insulating-supporting bars near one end of the heating-chamber, and the insulating-stud near the other end, and the U-shaped heating-coil having its ends detachably connected to the bars and its bight passing around the stud, the water-inlet being below the bight. (Specification, 4s. 6d.)

[Note.—Here follow four other claims.]

No. 31161.—11th April, 1911.†—JOHN HENRY MESSINGER, of 36 Beaumont Street, Portland Place, London W., England, Gentleman. Improvements in tires.

Claim.—(1.) A pneumatic tire having a cover formed on one or both sides with helical or inclined ribs, and in which alternate ribs terminate in knuckles at the tread and merge into protuberances of substantially hemispherical or ovoid form arranged on the tread, the intermediate ribs terminating at the rise of the tread, as and for the purpose set forth. (Specification, 4s.)

[Note.—Here follow three other claims.]

No. 31166.—12th April, 1912.—WHARTON B. McLAUGHLIN, residing at 1047 Stebbins Avenue, New York, United States of America, Chemist. Improvement in methods and apparatus for desiccating fluid substances.

Claims.—(1.) The method of desiccating liquids which consists in spraying the liquid to be dried into a current of gas at a temperature exceeding 212°F., with means for rapidly cooling said gas when desiccating is completed. (2.) The method of desiccation which consists in spraying the substance to be desiccated into a current of heated gas, and upon the completion of desiccation rapidly reducing the temperature by the injection into the current of another current of cooler gas. (3.) The method of desiccation which consists in spraying the material to be desiccated into a current of heated gas, and subsequently rapidly cooling this gas without precipitating the moisture contained therein. (Specification, 2s. 3d.)

No. 31172.—16th April, 1912.—GOTLIEB GRUMWALD, of Koputaru, New Zealand, Bee-farmer. An improved acetylene-gas generator.

Claim.—(1.) An acetylene-gas generator comprising a central cylinder connected at the bottom to smaller cylinders, the tops of which are connected to a vertical pipe contained within the central cylinder, a cross-chamber forming a base for the three cylinders and connected to one of the smaller cylinders by a pipe and stop-cock, substantially as set forth. (Specification, 4s. 6d.)

[Note.—Here follow five other claims.]

No. 31177.—17th April, 1912.—ALFRED PERCY TURNBULL, of “Romsey,” Victoria Street, Randwick, near Sydney, New South Wales, Australia, Electrical Engineer. Improvements in the mounting of electric generators upon the head-frame of windmills.

Extract from Specification.—Consist essentially in providing for the electrical conductors a vertical conduit, concentric to the axis of the pivoted head-frame of the mill, and, passing freely through the fixed bed-plate of said frame, is either affixed to and dependent from the frame, or has free passage therethrough, and is fixed at its lower end, preferably to the mill-tower. This conduit has positioned thereon a slip-ring commutator, either at the top or bottom end thereon, according as to whether the conduit is fixed and independent of or is dependent from the pivoted head-frame respectively. Current-collecting brushes are provided adjacent to and contacting with the before-mentioned commutator. The top end of the conduit is preferably covered for weather-protection, in the preferred construction a cylindrical hooded cap being employed. The generator is supported upon the pivoted head-frame of the mill by any convenient means, such as a pair of transverse parallel bearers affixed to said frame, the spindle of the generator being connected by suitable gearing to the axle of the wind-wheel. (Specification, 5s. 6d.)

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