Aug. 12.] THE NEW ZEALAND GAZETTE. 2117

when the field-magnet structure is energized being retarded more or less according to the excitation of the field-magnet structure, and therefore the power transmitted to, or the speed of, the load correspondingly varied.

[NOTE.—Here follow four other claims.]

(Specification, 10s. 6d. ; drawing, 3s.)

No. 26130.—22nd June, 1909.—ALBERT EDWARD HUMPHRIES, of Coxes Lock Mills, Weybridge, Surrey, England, Miller. Improvements in or relating to the milling of flour.

Claims.—(1.) For the purpose of modifying the properties of flour in the directions described, subjecting the flour or the stock, as a part of the process of manufacture, to a spray of water containing in solution or suspension an ingredient or ingredients having the desired effect. (2.) For the purpose of modifying the properties of flour in the direction or directions described, subjecting the stock to a spray of water. (3.) For increasing the gas-making qualities of flour, spraying the flour or the stock with a solution of maltose, dextrin, and a very small proportion of a malt extract of high diastatic power with or without ammonium-phosphate, substantially as described. (4.) For improving the dough, spraying the flour or the stock with a solution of one or more of the phosphates of calcium, magnesium, or potassium, or of any other appropriate salt, substantially as described. (5.) For retarding fermentation or as a corrective for degenerating enzymes in flours, spraying the flour or the stock with a dilute solution of caustic potash, potassium-carbonate, or the like, or a solution of common salt, substantially as described.

(Specification, 6s. 6d.)

No. 26134.—21st June, 1909.—AUGUSTIN LEON JEAN QUENEAU, of 5937 Overbrook Avenue, Philadelphia, United States of America, Metallurgical Engineer. Improvements in the metallurgy of zinc.

Claims.—(1.) The method of extracting and recovering zinc from zinc-ore which consists in preheating said zinc-ore (preferably to a temperature above that at which the reducing-agent to be used would burn in air), separately charging into a reducing-furnace the ore in the preheated state, and a reducing-agent (the reducing-agent likewise preferably preheated to a lower temperature) intimately mixing them within the furnace, subjecting the mixture to a reducing-atmosphere and a reducing-temperature, with exclusion of air, thereby releasing the zinc in the form of zinc-vapour, and condensing said vapour to the metallic state.

[NOTE.—Here follow six other claims.]

(Specification, 13s. 6d. ; drawing, 3s.)

No. 26146.—29th June, 1909.—THOMAS PARKER, M.I.C.E., of Croft House, Rosecroft Avenue, Hampstead, N.W., England, Engineer. Improvements relating to the distillation of coal and other carbonaceous substances.

Claims.—(1.) The provision in a coke-oven of means for independently controlling the temperature at a number of parts of the charge, for the purpose and substantially as described. (2.) In a coke-oven, the provision of means for alternatively supplying air under pressure and steam to the charge under treatment, with or without the addition of combustible gases under pressure, in the manner, for the purpose, and substantially as described. (3.) A beehive coke-oven constructed substantially as described with reference to the drawings. (4.) A cupola or longitudinal coke-oven constructed substantially as described with reference to Figs. 3 and 4 or Fig. 5 of the drawings.

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

No. 26149.—29th June, 1909.—HENRY SELBY HELE-SHAW, of 64 Victoria Street, Westminster, London, England, Consulting Engineer (Fellow of the Royal Society). Variable-stroke fluid-machine.

Claims.—(1.) A variable-stroke fluid-machine for use either as a pump or a motor with either compressible or incompressible fluid, the essential features of which are a multiplicity of rigidly connected cylinders symmetrically placed to insure practical uniformity of effort, the axes of the cylinders radiating in various directions perpendicularly from a fixed axis of rotation, a cylinder body or position in which the cylinders are formed rotating in contact with a fixed circular valve the induction and eduction ports of which are divided by a longitudinal plane, pistons or plungers having ends remote from the circular valve rotating in a circle the axis to the plane of which is always parallel to the fixed axis common to the cylinder body and circular valve, and which (though in general fixed) is capable of movement to and fro at will so as to either coincide with or take positions on either side of the common fixed axis of the cylinder body, means for effecting the variation of the distance between the two axes so as to cause a common variation of the stroke of the pistons or plungers, and the change to opposite sides of the relative positions of the two axes enabling a reversal in the direction of motion to take place, means for enabling the respective free and unattached piston-heads to move with minimum friction to their circular path so that while they are compelled to move in that path the movement of each along the path is independent of the movement of any other in that path.

[NOTE.—Here follow thirteen other claims.]

(Specification, £1 4s. ; drawing, 6s.)

No. 26150.—29th June, 1909.—ARTHUR ERNEST WILLIAM DAY, of 37 Ramsbury Road, St. Albans, England, Straw-hat Manufacturer; and VYSE, SONS, AND CO., LIMITED, of 76 Wood Street, London, England, Hat-manufacturers and Merchants. Improvements in hats.

Claim.—The adjustable cord or equivalent fitment to the body of a hat, for the purposes and arranged substantially as described and illustrated.

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

No. 26159.—14th April, 1909.—ALFRED SMITH, of 189B Manchester Street, Christchurch, New Zealand, Electrician; and ALBERT LAMB SMITH, of Manchester Street aforesaid, Commission Agent. An improved automatic fire-alarm.

Extract from Specification.—According to our invention we employ a closed circuit so that there is a constant though slight flow of electricity through the signal-transmitting apparatus. Upon the breakage of current due to the fusing of a special thermostat which we have devised, the current is cut off and the signal-transmitting apparatus released whereby a signal is transmitted over independent wires leading to the fire-station. The thermostat according to our invention consists of fusible wire which is interposed at as many points as may be necessary in the electrical circuit. The wire is composed of an alloy of metals fusing at a very low temperature and normally carries the current across a gap in the circuit. The fusible wire is preferably arranged in the form of a loop, the respective ends being connected to independent terminals in an insulated base which is secured to the wall. Each thermostat may be covered to prevent it from becoming accidentally damaged. The wires forming the electrical circuit within the room or building are led to the signalling-apparatus, which comprise electro-magnetic coils which normally sustain a soft-iron armature connected to a trip arrangement adapted to act as a stop in a clock train. This clock train carries a wheel having a number of projections, which projections one after the other engage with and raise a lever which at each movement opens an electrical circuit leading to a Morse or other suitable telegraph instrument placed in the fire-station. The projections from the signalling-wheel are so formed and spaced that the signal sent upon the dot-and-dash principle indicates upon the telegraph instrument the building from which the signal has been sent. Each signalling-apparatus has a wheel with a different arrangement of projections so that a different signal may be sent from each instrument.

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

(Specification, 8s. 6d. ; drawing, 2s.)

No. 26243.—14th July, 1909.—EVERED HANHAM ARUNDEL LAMBERT, of “Richmond,” 3 Whaling Road, North Sydney, New South Wales, Public Servant (Railways). A means for affording support to sheep and other live-stock during transportation or in confinement and for purposes incidental thereto.

Claims.—(1.) In any steam or other ship, road or railway vehicle, yard, pen, coop, space, place, or the like in which live-stock such as sheep, cattle, fowls, or the like may be transported or confined, the use of a net, grid, or the like (but distinct from the slings as commonly used for supporting individual horses and cattle in stalls on shipboard) that will allow of the said live-stock standing with their feet on the floor and yet prevent them from lying thereon, substantially as described and for the purposes set forth.

[NOTE.—Here follow five other claims.]

(Specification, 7s. ; drawing, 1s.)