740
THE NEW ZEALAND GAZETTE.
[No. 30

No. 13373.—7th February, 1901.—HANS ALBERT FRASCH, of Royal Hotel, Hamilton, Ontario, Canada, Chemical Engineer. Improved process of extracting and reducing metals by electrolysis.

Claims.—(1.) The method of producing an electrolyte which consists in electrolyzing a solution of a salt of an alkali in the presence of an anode containing metal or metals to be extracted, and thereby forming a double salt of the salt of the alkali and those metals contained in the anode whose hydroxides are soluble in a solution of alkali. (2.) The method of producing an electrolyte which consists in electrolyzing a solution of a salt of ammonium in the presence of an anode bearing metal or metals to be extracted, and thereby forming a solution of a double salt of ammonium and those metals contained in the anode whose hydroxides are soluble in ammonia. (3.) The method of recovering metals whose hydroxides are soluble in a solution of alkali, such as copper, nickel, and cobalt, from matte or ore, by electrolysis, which consists in forming, in connection with electric conductors, an anode of disintegrated or pulverised metal-bearing matte or ore which is freely permeable by an electrolyte, distributing such mass over the bottom of the vessel in which the electrolysis is conducted, covering said anode with a granular, permeable, chemically and electrically inert substance, and circulating a solution of a salt of an alkali through the body of the anode and the inert substance and past the cathode, substantially as described. (4.) The method of recovering metals whose hydroxides are soluble in ammonia, such as copper, nickel, and cobalt, from matte or ore by electrolysis, which consists in forming, in connection with electric conductors, an anode of disintegrated or pulverised metal-bearing matte or ore which is freely permeable by an electrolyte, distributing such mass over the bottom of the vessel in which the electrolysis is conducted, covering said anode with a granular, permeable, chemically and electrically inert substance, and circulating a solution of an ammonium-salt through the body of the anode and the inert substance and past the cathode, substantially as described. (5.) The method of separating, by electrolysis, metals from their ores whose hydroxides are soluble in a solution of alkali or ammonia, which consists in providing an electrolytic bath with an anode composed of comminuted ore, or concentrates thereof, bearing the metals to be obtained, circulating successively through a series of such anodes and past suitable cathodes an electrolyte capable of dissolving the metals contained therein, simultaneously electro-depositing a selected metal on the cathodes and thereby continuously removing such metal and enriching the contents of the solution with the other metals, substantially as described. (6.) The method of separating from their ores by electrolysis metals whose hydroxides are soluble in ammonia, which consists in providing an electrolytic bath, with an anode composed of comminuted ore, or concentrates thereof, bearing the metals to be obtained, circulating successively through a series of such anodes and past suitable cathodes a solution of an ammonium-salt, and thereby forming a double salt of the metal contained in the anode and the ammonium-salt, simultaneously electro-depositing a selected metal on the cathodes, and thereby enriching the solution with a double salt of the other metals and ammonium-salt, substantially as described. (7.) The method of recovering copper and separating nickel, cobalt, and other metals whose hydroxides are soluble in ammonia, from matte or ore by electrolysis, which consists in providing a number of electrolytic baths with anodes containing the metals to be extracted, electrolyzing a solution of a salt of ammonium in the first of the series of baths, and circulating the metal-bearing electrolyte thereby obtained successively through the anodes and past the cathodes of the baths next in series, thereby electro-depositing the copper on to the cathodes of the successive baths, and constantly enriching the electrolyte with nickel and cobalt, substantially as described. (8.) The method of recovering copper and separating nickel and cobalt from matte or ore by electrolysis which consists in providing a number of electrolytic baths with anodes containing the material to be treated, electrolyzing a solution of the salt of an alkali or ammonium in the first of the series of baths, and circulating the metal-bearing electrolyte thereby obtained successively through the anodes and past the cathodes of the baths next in series, thereby electro-depositing the copper on to the cathodes of the successive baths and constantly enriching the electrolyte with nickel and cobalt, and finally circulating the electrolyte past the cathode only of the succeeding bath, thereby depositing the last traces of copper and separating the remaining solution of nickel and cobalt. (9.) In the process of separating metals whose hydroxides are soluble in ammonia from their ores or concentrates by electrolysis, circulating an electrolyte consisting of a solution of an ammonium-salt between an anode and a cathode, substantially as described. (10.) The method of exhausting an electrolyte containing a number of metals, of an individual

less electro-positive metal contained therein, by circulating the electrolyte through an anode containing the metals represented in the electrolyte, and allowing part of the electrolyte to pass to the cathode in quantity equivalent to the electrolytic capacity which the cathodes represent under the existing electric tension, and removing the rest of the electrolyte directly from the anode without passing the cathode.
(Specification, 11s. 6d.; drawings, 1s.)

No. 13381.—7th February, 1901.—EUREKA SHOE COMPANY, a corporation organized under the laws of the State of New Hampshire, and having a place of business in Manchester, New Hampshire, United States of America (assignees of Arsene Herbert, of Manchester aforesaid, Machinist). Hand tacking-tools.

Claims.—(1.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein leading to the nose thereof, a tack-stop at the bottom of the tack-channel, a tack-guard above the tack-stop mounted adjacent to and susceptible of movement across the tack-channel, in such manner that a movement of the hammer which tends to throw a tack back from the tack-stop also moves the tack-guard across the tack-channel. (2.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein leading to the nose thereof, a tack-stop at the bottom of the tack-channel, a tack-guard above the tack-stop hung adjacent to and susceptible of being moved across the tack-channel, and a tack-guard actuator movably mounted in such manner that by its motion in response to a movement of the tool which tends to throw a tack back from the tack-stop it actuates the tack-guard to close the tack-channel. (3.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein, a tack-stop in the tack-channel, a tack-guard consisting of a latch provided with a tack-engaging finger adjacent to and movable into the tack-channel above the tack-stop, and a tack-guard actuator consisting of a movable weight so supported that movement of the said actuator in response to a movement of the hammer which tends to throw a tack back from the tack-stop is communicated to the tack-guard, and the tack-guard finger is thereby moved into the tack-channel. (4.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein, a tack-stop at the bottom of the tack-channel consisting of a movable stop-block, a tack-guard mounted in the tack-stop block and provided with a tack-engaging finger adjacent to and movable into the tack-channel above the tack-engaging point of the tack-stop, and a tack-guard actuator consisting of a movable weight supported in the tack-stop block in such manner that movement of the said actuator in response to movement of the hammer which tends to throw a tack back from the tack-stop is communicated to the tack-guard, and the tack-guard finger thereby moved into the tack-channel. (5.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein, a tack-stop at the bottom of the tack-channel, a tack-guard consisting of a pivoted latch having a finger adjacent to and movable into the tack-channel above the tack-stop and a projection in operative connection with a tack-guard actuator, and the tack-guard actuator, consisting of a pivoted lever whereof one end is weighted and the other is in operative connection with the aforesaid projection on the tack-guard, the tack-guard and actuator being so proportioned and arranged that movement of the weighted end of the actuator in response to a movement of the hammer which tends to throw a tack back from the tack-stop is communicated to the tack-guard, and the finger thereof moved into the tack-channel. (6.) In a magazine hammer, the combination of a hammer-head, a tack-channel therein, a tack-stop at the bottom of the tack-channel consisting of a pivoted stop-block centrally slotted and provided with a tack-guard in the slot and pivoted to the stop-block, and with a tack-guard actuator in the said slot and pivoted to the stop-block, the tack-guard provided with a finger adjacent to and movable into the tack-passage, and a projection in juxtaposition to the actuator, the actuator consisting of a lever juxtaposed to the tack-guard projection at one end and weighted at the other, all arranged in such manner that movement of the weighted end of the actuator in response to movement of the hammer which tends to throw a tack back from the tack-stop causes the tack-guard finger to move into the tack-channel. (7.) In a magazine hammer, the combination with a hammer-head, a tack-channel, and a tack-stop, of a tack-guard L, having a finger l¹, and a projection l², and pivot k³, and a tack-guard actuator M, having a weighted end m¹, projection m², and pivot m³, substantially as described. (8.) In a magazine hammer, a hammer-head having a tack-channel therein leading to the nose thereof, a plunger within said channel, a spring-actuated tack-stop at the bottom of the tack-channel adapted to be moved by and for the passage of said plunger