466
THE NEW ZEALAND GAZETTE.
[No. 16

Claims.—(1.) In sash-fasteners, the combination with a spring pin attached to the sash, and adapted to engage slots or recesses, of a knob or head working on spiral-shaped or inclined surfaces whereby it is moved in and out when turned, substantially as described. (2.) In sash-fasteners, the combination with a spring pin attached to the sash, and adapted to engage slots or recesses, of a knob or head having spiral-shaped or inclined surfaces engaging corresponding spiral-shaped or inclined surfaces, substantially as described. (3.) In sash-fasteners, the combination with a spring pin attached to the sash, and adapted to engage slots or recesses, of a cylindrical knob or head having spiral-shaped or inclined edges engaging corresponding spiral-shaped or inclined surfaces, substantially as described. (4.) In sash-fasteners, the combination with a spring pin engaging slots or recesses, and operated by a cylindrical knob or head having spiral-shaped inclined edges, of a plate attached to the sash and having a stud upon which the cylindrical-shaped knob or head works, and provided with corresponding spiral-shaped or inclined edges, substantially as described. (5.) In sash-fasteners, the combination with a spring pin attached to the sash, and adapted to engage slots or recesses, of a knob or head working on spiral-shaped or inclined surfaces and engaging a notch or recess at the highermost point, substantially as described. (6.) In sash-fasteners, the combination with a spring pin attached to the sash, and adapted to engage slots or recesses, of a knob or head having spiral-shaped or inclined surfaces working on corresponding spiral-shaped or inclined surfaces provided with a notch or recess at the highermost point, in which the point of the said knob or head engages, substantially as described.
(Specification, 4s. 6d.; drawings, 1s.)

No. 14494.—4th February, 1902.—GEORGE WESTINGHOUSE, of Westinghouse Building, Pittsburg, Pennsylvania, United States of America, Manufacturer (assignee of William John Knox, of Edgewood Park, Allegheny, Pennsylvania, United States of America, Chemist). Improvements in methods of treating copper ores.

Claims.—(1.) The method of obtaining copper-sulphide or metallic copper from copper-matte containing iron by converting the iron into a fusible compound of oxygen, sulphur, and iron, which separates from the enriched matte owing to the difference in the specific gravities of these compounds when melted. (2.) The method of obtaining copper-sulphide or metallic copper from copper-matte containing iron by oxidizing the matte in a basic-lined vessel, whereby the iron is converted into a fusible compound of oxygen, sulphur, and iron. (3.) In the method of obtaining copper-sulphide or metallic copper described, oxidizing the iron and sulphur of the matte by forcing air into contact therewith while in a molten state, thereby generating heat sufficient to maintain the mass in a molten state, and thereby causing the formation of a compound of oxygen, sulphur, and iron under such conditions that substantially no silicate of iron is formed. (4.) The modification of the method of obtaining copper-sulphide or metallic copper in which the matte is oxidized to the required degree in a roasting-furnace, and the formation and separation of compounds of oxygen, sulphur, and iron is then accomplished by melting the roasted matte in a basic-lined vessel. (5.) In the described method of obtaining copper-sulphide or metallic copper, the utilisation of the fusible compound of oxygen, sulphur, and iron as a basic flux in the ore-smelting furnace.
(Specification, 8s.; drawings, 1s.)

No. 14498.—6th February, 1902.—PARNELL RABBDGE, of Ben Boyd Road, Neutral Bay, Sydney, New South Wales, Electrician. Means for connecting an alarm call in a local system to the telephone exchange.

Claims.—(1.) Two contacts attached to an armature, the one contact being closed whilst the other remains open, the closed contact being in circuit with an electro-magnet and battery for the purpose of setting the armature in motion and close the open contact to send an interrupted current to line, as specified. (2.) An alarm call with its armature arranged to work two contacts, the one contact being as a common bell contact for the purpose of making and breaking the current through coils that form the magnet which set it in motion, the other contact being for the purpose of connecting the line circuit to a telephone so as to send an interrupted current to the exchange to notify the operator that the call is in operation, as specified. (3.) An electro-magnet and armature so arranged to work two contacts in such a manner that when the armature is in its normal position one of the said contacts is closed through the coils of the electro-magnet and a local circuit, whilst the other contact remains open from the telephone-line until the armature is attracted by the electro-magnet. The line will then be closed through the battery for the purpose of notifying the operator at the exchange, as specified. (4.) An alarm call with its armature arranged to work two contacts in combination with a thermostat, as specified. (5.) An alarm call with its armature arranged to work two contacts in combination with a burglar-alarm, as specified.
(Specification, 3s.; drawings, 1s.)

No. 14501.—6th February, 1902.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Patent Agent (nominee of Cyrus Robinson, of Swissvale Avenue, Edgewood Park, Allegheny, Pennsylvania, United States of America, Engineer). Improvements in bearings of engine-shafts.

Claims.—(1.) For an engine-shaft, a bearing the lower part of which comprises side pieces detachably secured to the bed-plate, and a main section with a removable bottom piece, said main section with its bottom piece being capable of rotation round the shaft when the side pieces are removed from the bed-plate, for the purpose specified. (2.) A bearing constructed substantially as described with reference to the drawings.
(Specification, 3s.; drawings, 1s.)

No. 14503.—7th February, 1902.—BARNET BENKEL, of 120, Portsdowm Road, Maida Vale, London, England, Tobacconist’s Manager. Improvements in cigar and cigarette holders.

Claims.—(1.) A cigar or cigarette holder characterized by being made internally both of a tapered and of a spirally ribbed formation, as set forth. (2.) In cigar or cigarette holders characterized as in claim 1, the form of construction in which the internally tapered and spirally ribbed cigar-holder is formed separate from and mounted in the mouth-piece, as set forth.
(Specification, 1s. 9d.; drawings, 1s.)

No. 14516.—12th February, 1902.—JAMES MARTIN PHILLIPPS, of Wharepapa, Auckland, New Zealand, Farmer. Improved means for automatically stopping and restarting the revolution of windmills.

Claims.—(1.) A lever-arm pivoted to a frame attached to the standards of a windmill, the outer end of such lever having an enclosed vessel attached thereto, while the inner end is connected to appliances whereby the sails of the windmill may be turned to a position of rest, in combination with means whereby the enclosed vessel may be filled with water and emptied of the same, as and for the purposes set forth. (2.) A rectangular frame attached to the standards of a windmill, a lever pivoted to such frame, one end of which has attached to it a rope or the like connected to appliances whereby the sails of the windmill may be turned to the angle of rest, while the other end is connected to the inner end of a lever pivoted to the frame and adapted to be operated by the filling and emptying of an enclosed vessel attached to the outer end thereof, as and for the purposes set forth. (3.) In appliances for automatically stopping and restarting the revolution of windmills, a pivoted lever-arm, one end of which is connected with means whereby the sails of the windmill may be turned to the angle of rest, and the other end of which is provided with an enclosed vessel, such vessel being in flexible communication with a water-tank, and so disposed that when the tank is filled the vessel shall also be filled, and when the tank becomes partially emptied the vessel shall be emptied, the filling and emptying of such vessel causing the lever to fall and rise, as set forth. (4.) The general arrangement, construction, and combination of parts in my improved means for automatically stopping and restarting the revolution of windmills as described and explained, as illustrated in the sheet of drawings, and for the several purposes set forth.
(Specification, 3s. 6d.; drawings, 1s.)

No. 14519.—13th February, 1902.—JOSEPH LYBRAND FERRELL, of 2218, Race Street, Philadelphia, Pennsylvania, United States of America, Mechanical Engineer. Improvements in wood-preserving.

Claims.—(1.) The described product, characterized by capacity to resist flame, and consisting of wood impregnated with aluminum sulphate. (2.) The described product, characterized by capacity to resist flame, and consisting of wood impregnated with aluminum sulphate mixed with another chemical capable of obviating the discolouring effect of the aluminum sulphate per se. (3.) The described wood-preserving compound, consisting of an aqueous solution of aluminum sulphate mixed with the residue of a carbonate decomposed in the presence of said sulphate. (4.) The described process of