1616
THE NEW ZEALAND GAZETTE.
[No. 73

still, whereby oils of different quality and density are produced, substantially as specified. (2.) In apparatus for the purpose described, a retort arranged at an inclination in a furnace, and provided at its upper end with a screw-worm caused to revolve and to convey raw material into the interior of said retort, substantially as specified and illustrated. (3.) In apparatus for the purpose specified, a retort externally heated by a furnace or the like, a pipe conducting vapour therefrom, and a chamber wherein said vapour is expanded and condensed, substantially as specified and illustrated. (4.) In apparatus for the purpose described, a retort heated by a furnace, a screw conducting matters to be operated upon to the interior of said retort, and a scraper upon a handle passing through a spuffing-box in the cover of said retort, substantially as specified. (5.) In apparatus for the purpose specified, a retort mounted at an inclination, a screw-worm conducting material to the interior thereof, and a valve at the lower end of the retort for drawing off unvolatilisable matters. (6.) In apparatus for the purpose described, the combination of a retort mounted at an inclination above or within a furnace or its equivalent, a screw-worm within a tube for conducting matters to the interior of said retort, a pipe for carrying away vapour therefrom, and an expansion-and-condensing chamber connected thereto, a rake operating upon material in the interior of said retort, and a valve for withdrawing waste matters, substantially as specified and illustrated. (7.) In apparatus for the purpose described, the combination and arrangement of parts constructed, arranged, and operating substantially as and for the purposes set forth, and illustrated in the drawings.
(Specification, 3s. 9d.; drawings, 5s. 6d.)

No. 11186.—25th November, 1898.—EDWARD CANDISH MILLARD, of 27, Martin’s Lane, London, E.C., England, Tea-taster. Improvements in or relating to tea-kettles.*

Claims.—(1.) The tea-kettle substantially as described and illustrated, and for the purpose set forth. (2.) In kettles of the class described—a container of a wide diameter, having a pivoted handle adapted to be folded into the interior of the container when required, said container being provided with a perforated surface; an interchangeable lid, for use upon the container or kettle after the container has been removed; a handle pivotally connected to said kettle, for the purpose of facilitating the removal of the lid aforesaid, substantially as and for the purpose set forth, and as described and illustrated.
(Specification, 2s. 9d.; drawings, 8s.)

No. 11264.—23rd December, 1898.—JOSEF LUDWIG HAWLICZEK, of Linnet Lane, Liverpool, England, Manufacturing Chemist, and HENRY LLOYD SNAPE, of Aberystwith, Cardigan, Wales, Doctor of Science of Aberystwith College. Improvements connected with gold-extraction by the cyanide process.*

Claims.—(1.) The improvement connected with the extraction of gold by the cyanide process—namely, the recovery of cyanogen compounds or substances from the sump-liquor, or equivalent liquor, of such process, by rendering the said compounds or substances insoluble by treating the liquor with metal salts, or oxides, or hydro-oxides, the solution of liquors being alkaline or neutral, and subsequently separating the insoluble metal cyanides so formed from the liquor, substantially as and for the purposes specified. (2.) In the recovery of cyanogen compounds from the sump-liquor, or equivalent liquor, of the cyanide process of gold-extraction, the simultaneous recovery of cyanide from sulpho-cyanide and other metal cyanides contained in the alkaline or neutral sump-liquor, or equivalent liquor, by treating it (the liquor) with cuprous chloride and another metal salt or oxide or hydro-oxide, or other metal salts or oxides or hydro-oxides, substantially as and for the purposes set forth. (3.) The described improvement connected with the extraction of gold by the cyanide process—namely, the recovery of cyanogen compounds or substances from the sump-liquor, or equivalent liquor, by treating said liquor with metal salts or oxides or hydro-oxides, and by violently agitating the liquor so treated subsequently, for the purposes described. (4.) The simultaneous and continuous recovery of cyanogen compounds or substances from the sump-liquor, or equivalent liquor, of the cyanide process of gold-extraction, by metal salts or oxides or hydro-oxides, and by the treatments, operations, and means as set forth.
(Specification, 9s. 6d.; drawings, 3s.)

No. 11350.—1st February, 1899.—EDWARD CANDISH MILLARD, of 27, Martin’s Lane, London, E.C., England, Tea-taster. Improvements in or relating to belts, straps, and the like.*

Claims.—(1.) As an article of manufacture, a belt or strap which is cut or slit the required distance of its length into strips, which may be plaited together, substantially as described and illustrated. (2.) In means for plaiting belts or straps, cutting or slitting the belt or strap the required distance, plaiting the strips so cut, and terminating the plait in the manner described and illustrated, for the purpose of providing a continuous belt or strap plaited the required distance.
(Specification, 2s.; drawings, 5s. 6d.)

No. 11451.—16th March, 1899.—JOHN HENRY SILLEY and WALTER WILLIAM BACON, of 41, Castlereagh Street, Sydney, New South Wales, Engineers. An improved rotary shearing-machine.

Claims.—(1.) In an improved shearing-machine, the combination of a revolving disc such as D, having adjustable cutting-blades with a comb such as A, substantially as described, and as illustrated in the drawings. (2.) In an improved shearing-machine, the combination of a revolving disc such as D, having adjustable cutting-blades and a comb such as A, with a spring-lever such as J, and tension-nut such as L, substantially as described, and as illustrated in the drawings.
(Specification, 2s. 6d.; drawings, 8s.)

No. 11495.—29th March, 1899.—HARRY PHILLIPS DAVIS, of 327, Neville Street, Pittsburg, Pennsylvania, United States of America, Electrical Engineer, and FRANK CONRAD, of 709, Whitney Avenue, Wilkinsburg, Pennsylvania aforesaid, Electrical Engineer. Improvements in alternating-current-measuring instruments.*

Claims.—(1.) For an electrical measuring-instrument, an armature or secondary member consisting of a disc having radii of different length, for the purpose specified. (2.) The combination of an instrument for measuring alternating currents, of a non-inductive resistance connected as a shunt to the primary coil, the temperature-resistance coefficient of said resistance being at least as great as that of the armature of the instrument, for the purpose specified. (3.) The combination with an instrument for measuring alternating electro-motive forces, of a non-inductive resistance connected in series with the primary coil and having a low temperature-resistance coefficient, for the purpose specified. (4.) In an alternating-current-measuring instrument, a closed demagnetising coil on the actuating magnet, said coil having a high temperature-resistance coefficient, so as to render the instrument substantially independent of changes of temperature. (5.) Measuring-instruments constructed substantially as described with reference to the drawings.
(Specification, 6s.; drawings, 16s.)

No. 11496.—29th March, 1899.—BENJAMIN GARVER LAMME, of 230, Stratford Avenue, Pittsburg, Pennsylvania, United States of America, Electrical Engineer. Improvements relating to the utilisation and conversion of electric currents.

Claims.—(1.) The method of varying the speed of a direct-current electric motor which consists in varying the phase-relation between current and electro-motive force in the armature circuit, whereby the armature reaction is varied. (2.) A direct-current electric motor having connected to its armature-winding an auxiliary alternating-current circuit, including means for adjusting the phase-relation between the current and the electro-motive force therein, for the purpose specified. (3.) For automatically maintaining substantially constant the speed of a rotary transformer feeding an alternating-current circuit having a variable inductive load, a choking-coil connected in parallel with the variable inductive load, and so adjusted that variation in the current taken by it will compensate for the variation in the armature reaction of the rotary transformer produced by the variation in the inductive load. (4.) The various arrangements for operating direct-current motors at a variable speed and for governing the speed of a rotary transformer, substantially as described.
(Specification, 6s. 6d.; drawings, 8s.)