JUNE 8.] THE NEW ZEALAND GAZETTE. 1115

No. 11335.—25th January, 1899.—GEORGE RICHARD ROWE, Surgical-instrument Maker, and JONATHAN TREVETHICK, Brush-manufacturer, both of 103, Queen Street, Auckland, New Zealand. An improved billiard-table.*

Claims.—(1.) A billiard-table designed to be placed upon the top of another table, and being for this purpose provided with supports which are operable to permit the height of said billiard-table to be regulated, and a true horizontal surface obtained, substantially as described and illustrated in the drawings. (2.) In combination, a billiard-table, adjustable supports thereunder, and spirit-levels sunk in recesses in the sides of said table for indicating its position horizontally, substantially as and for the purposes described, and illustrated in the drawings. (3.) The combination with a billiard-table of adjustable supports thereunder, said supports being constructed in two parts, and one being adapted to screw into the other, substantially as and for the purposes specified and illustrated.
(Specification, 1s. 6d.; drawings, 3s.)

No. 11539.—17th April, 1899.—JOHN RAMAGE, of Balclutha, Otago, New Zealand, Tinsmith and Plumber. An improved water-tap suitable for either high or low pressure, and for hot or cold water.

Claims.—(1.) In a valve-box for a water-tap, with the valve-seat on the end of the valve-box, as shown in the drawing at a¹. (2.) The outlet from said valve-box is placed directly under the valve-box.
(Specification, 1s.; drawings, 3s.)

No. 11618.—12th May, 1899.—HARRY PHILLIPS DAVIS, of 327, Neville Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer. Improvements in or relating to apparatus for controlling and governing electric motors.

Claims.—(1.) For compound or shunt-wound electric motors, a switch by means of which the direction of rotation of the motor can be reversed without breaking the circuit consisting of the armature and shunt magnet coil. (2.) For use with electric motors, a starting-resistance, which is automatically and gradually reduced by means of a magnetically operated switch, the operating magnet being itself short-circuited as soon as the resistance attains its minimum value, and with or without a second electro-magnet for retaining the switch-arm in position after the operating magnet has been short-circuited. (3.) The combination with the switch claimed in Claim 2 of a dash-pot so arranged that the operating magnet core can only move slowly to reduce the resistance, but is permitted to move quickly when the operating magnet is short-circuited. (4.) For use with electric motors, a starting, stopping, and reversing switch, constructed and operating substantially as described with reference to Figs. 1, 2, and 3 of the drawings. (5.) A starting-resistance constructed and operating substantially as described with reference to Figs. 4, 5, and 6 of the drawings.
(Specification, 8s. 6d.; drawings, £1 1s.)

No. 11624.—13th May, 1899.—ALAN PRICE, of Sydney, New South Wales, Civil Engineer. Improvements in the Hotchkiss boiler-cleaners.

Claims.—(1.) Constructing the Hotchkiss boiler-cleaner in two halves, with a suitable groove or recess in one or both halves to receive a removable baffle-plate, as set forth. (2.) Constructing the Hotchkiss boiler-cleaner in semi-spherical halves, each half being provided with a flange whereby it may be bolted to the other half, the faces of the flanges being recessed, or the interior of the sphere being provided with suitable means, such as the pegs·J, for supporting a removable baffle-plate, as specified. (3.) The general arrangement, construction, and combination of parts in the improved Hotchkiss boiler-cleaner as set forth and for the several purposes specified.
(Specification, 4s. 6d.; drawings, 5s. 6d.)

No. 11625.—12th May, 1899.—THOMAS MURRAY, Bricklayer, and WILLIAM PINCHES, Architect, both of Wanganui, New Zealand. An apparatus for advertising.

Claims.—A lantern or frame for holding advertisements that has a revolving motion on being drawn along. A lantern or frame for holding advertisements fixed to a centre spindle, the same being attached to a carriage, and driven by cog-wheels from the axle of carriage. A lantern or frame for holding advertisements, the same being driven by cog-wheels off the axle of a carriage, and having friction-rollers fixed under the bottom of lantern or frame, and running on a diaphragm having a transom of iron fixed thereon, substantially as shown in drawings and specification.
(Specification, 1s. 9d.; drawings, 3s.)

No. 11628.—18th May, 1899.—ALEXANDER IMSCHENETZKY, of 2, Tikhvinskaya, St.Petersburg, Russia, Lieutenant-colonel. Improved manufacture of refractory material suitable for building and other purposes.

Claims.—(1.) The process of manufacturing refractory material which consists in first saturating articles made of asbestos, with or without admixture of other substances, with a silica-solution, and then treating the same with a bicarbonate-solution, in order to deposit the silica from any silicate contained therein, substantially as and for the purposes described. (2.) The process of manufacturing refractory material which consists in first saturating articles made of asbestos, with or without admixture of other substances, with a solution of sodium-silicate mixed with sodium-bicarbonate, from which the silica, in the form of colloid only, separates after a certain time, and then further treating the same with a bicarbonate-solution, substantially as and for the purposes described. (3.) In the process of manufacturing refractory material from asbestos with or without admixture of other ingredients by saturating the asbestos articles with a silica-solution, the method of further saturating the articles with a silicate-solution, and then soaking them in a solution of bicarbonate, whereby the absorbed silicate is converted into silica by taking up carbonic acid from the bicarbonate, the resulting by-product of carbonate-solution thus obtained being then available for the production of further quantities of silicate and bicarbonate, substantially as described. (4.) The process of manufacturing artificial stone which consists in first soaking sheets or other forms produced from asbestos-pulp in a solution of silica, then drying the same, then impregnating the same with a solution of sodium-silicate, and, lastly, treating the same with a solution of either sodium-bicarbonate, potassium-bicarbonate, or ammonium-bicarbonate, substantially as described. (5.) The process of manufacturing artificial stone which consists in saturating the articles formed of asbestos, with or without admixture of other materials, with a silicate-solution, and then exposing the mass to the action of carbon-dioxide under pressure in water, so as to produce hydrated silica in the colloid form, and a solution of the alkaline carbonate or bicarbonate, substantially as described. (6.) The process of manufacturing refractory material which consists in first producing a solution of silica by mixing together a solution of sodium-silicate and a bicarbonate-solution sufficiently weak to prevent the colloid state being assumed too rapidly, and then saturating bodies made of asbestos with or without other substances with such silica-solution, substantially as described. (7.) A refractory material composed of asbestos-fibre, with or without admixture of other materials, bound together by pure silica produced in the mass by the conversion of a silicate by means of a bicarbonate or by the direct action of carbon-dioxide under pressure, substantially as described.
(Specification, 9s. 6d.)

No. 11629.—18th May, 1899.—HERBERT ARTHUR SOMES, of 52, Pitt Street, Sydney, New South Wales, Manure-manufacturer. Improvements in the manufacture of fertilisers from blood.

Claims.—(1.) The treatment of blood for the manufacture of a fertiliser consisting in (a) clotting; (b) separating serum from the clot; (c) coagulating the serum with commercial ferric sulphate, or with a solution produced by the reaction of nitric acid and ferrous sulphate in the specified proportion; (d) separating liquor from the coagulum; and (e) mixing, drying, and grinding the clot and coagulum, substantially as described. (2.) The treatment of fresh blood for the manufacture of a fertiliser consisting in (a) treating commercial ferric sulphate with a solution produced by the reaction of nitric acid and ferrous sulphate in the specified proportion; (b) separating the liquid from the coagulum; (c) mixing, drying, and grinding the coagulum, substantially as described. (3.) In the treatment of blood-serum for the manufacture of a fertiliser, coagulating the non-aqueous portions of the same by adding thereto in the specified proportion a red solution produced substantially as described, by the reaction of nitric acid and ferrous sulphate. (4.) In the treatment of blood for the manufacture of a fertiliser, coagulating the non-aqueous portions of the same by adding thereto in the specified proportion a solution of commercial ferric sulphate, substantially as described.
(Specification, 3s.)