1796
THE NEW ZEALAND GAZETTE.
[No. 82

cylinders, having rotary motion imparted to them, substantially as and for the purposes described, and as illustrated in the drawings. (4.) In combination with a numeral- or sign-exposing cylinder, the use of a pivoted pawl as D, having a detent or stop as D³, which, when released, drops into its ratchet, and so arrests and retains the cylinder at any chance point, substantially as and for the purposes described, and as illustrated in the drawings. (5.) The use of a numeral- or sign-exposing cylinder, provided with a driving-wheel and with a ratchet wheel, the latter having serrations or equivalent formations equal in number to the number of numerals or signs on the said cylinder, substantially as and for the purposes described, and as illustrated in the drawings.
(Specification, 5s.; drawings, 1s.)

No. 13828.—19th July, 1901.—JOHN WILLIAM ROONEY, of Roxburgh, New Zealand, Painter. An improved dust-, draught-, and rain-preventer for doors.

Claims.—(1.) The apparatus such as described, improved dust-, draught-, and rain-preventer attached to door by butt hinges substantially as set forth; (2) steel spring attached to door, substantially as set forth; (3) the improvement in dust-, draught-, and rain-preventer consisting of parts constructed, arranged, and operating substantially as set forth.
(Specification, 1s. 6d.; drawings, 1s.)

No. 13874.—1st August, 1901.—WILLIAM LINCOLN LEE REES, Barrister and Solicitor, and ROBERT HENRY MASON, Auctioneer, both of Gisborne, New Zealand. An improved means of fastening postal envelopes.

Claims.—(1.) The improved means or method of fastening or closing postal envelopes, consisting of a pliable clip attached to an envelope with back cut sufficiently low, and slot or opening in flap of envelope through which said clip may be inserted and bent upon flap, said envelope being convertible for user from one class of postal matter to another class, substantially as illustrated and described, and for the purposes set forth. (2.) The combination of an envelope having back cut sufficiently low, and a slot or opening in flap thereof, and a pliable clip for insertion in said slot or opening, substantially as illustrated and described, and for the purposes set forth.
(Specification, 2s. 6d.; drawings, 1s.)

No. 13912.—17th August, 1901.—JOHN VORBACH, of Renwicktown, Marlborough, New Zealand, Blacksmith. Cooking-pan hanger.

Claims.—(1.) The second detail, being the V-shaped hooking-frame B. (2.) The third detail, being the jamb-bar C. (3.) The fourth detail, being the hanging-rod D. (4.) The fifth detail, being the swivel stay E. (5.) The jamb-hook F. (6.) The bracket H. (7.) The combination of the foregoing details as a cooking-pan hanger.
(Specification, 1s.; drawings, 1s.)

No. 13920.—21st August, 1901.—JOSEPH CORKILL, of Wairoa, New Zealand, Timber Merchant, and MORGAN MORGAN, of Napier, New Zealand, Commercial Traveller. An improved acetylene-gas generator.

Claims.—(1.) In acetylene-gas generators, a water-tank and gas-holder, in combination with a generating-chamber secured to the bottom of the water-tank, and provided with pipe connections leading from and to the tank, such generator being formed with an open bottom, and with a cover to fit upon such opening, as specified. (2.) An acetylene-gas generator consisting of a chamber whose bottom end is open, and provided with a cover fitting upon such opening, and means whereby such cover may be moved up and down so as to open and close the chamber, and a carbide-holder adapted to rest upon the cover, as specified. (3.) In acetylene-gas generators, a generating-chamber provided with a bottom cover, to the under-side of which is affixed a rod, to the ends of which are connected sliding-pieces fitting within sleeves upon the side of the chamber, a pair of link-pieces depending from the rod and connected together by a cross-bar that is attached to a lever pivoted in a bearing upon the side of the chamber, and a spring fastening for securing the free end of the lever to the chamber, all as and for the several purposes specified. (4.) The general arrangement, construction, and combination of parts in our improved acetylene-gas generator as described and explained, as illustrated in the sheet of drawings, and for the purposes set forth.
(Specification, 3s. 3d.; drawings, 1s.)

No. 13922.—22nd August, 1901.—DUNLOP PNEUMATIC TIRE COMPANY OF AUSTRALASIA, LIMITED, whose registered office is at 108, Flinders Street, Melbourne, Victoria (nominees of Henry James Doughty, of 680, Broad Street, Providence, Rhode Island, United States of America, Manufacturer). Improvements in apparatus for use in the manufacture of covers for wheel-tires.

Claims.—(1.) In apparatus for use in the manufacture of covers for wheel-tires, an expansible “former,” the movable sections of which are provided with horizontal racks in gear with toothed wheels, or segments thereof, turning on centres fixed to parts of the “former” or a plate supporting the same, and which toothed wheels or segments gear with and are operated by a moving rack-bar, for the purpose and in manner substantially as shown and described. (2.) In apparatus for use in the manufacture of covers for wheel-tires, the arrangement of rods and stops or guides in combination with the “former,” and the movable frame for controlling the vertical movement of such “former” and the periods at which it is expanded and contracted, for the purpose and in manner substantially as shown and described. (3.) In apparatus for use in the manufacture of covers for wheel-tires, the combination of parts for the purpose and in manner substantially as shown and described.
(Specification, 4s. 6d.; drawings, 2s.)

No. 13923.—22nd August, 1901.—DONALD MACDONALD, of Orroroo, South Australia, Cyclist. Improvements in gearing of bicycles.

Claims.—(1.) The described gearing for bicycles, consisting essentially in the combination, upon the axle of the driving-wheel, of a crown cog-wheel on a stationary disc, planet wheels on an inner dished disc, and hub cog-wheels on a tube bearing on the axle, which cog-wheels mesh in a line parallel to the travel of the machine, substantially as described. (2.) In gearing for bicycles, the combination of free planet wheels arranged upon spindles fixed to an intermediate dished disc, with an outer crown cog-wheel, and a cog-wheel arranged about midway in the hub upon an inner lateral tube revolving upon the main driving-axle, substantially as described. (3.) In gearing for bicycles, a hub having a central flange or web and an inner tube carrying hub cog-wheels, substantially as described and for the purposes indicated. (4.) In gearing for bicycles, a hub having a central flange fixed to an inner tube and provided with cog-wheels, such hub being so arranged as to be mounted on bearings about midway upon the crank-axle, substantially as described. (5.) In gearing for bicycles, a hub or barrel having a central flange or web, and an inner tube carrying hub cog-wheels arranged to be rotated by free planet wheels upon an intermediate dished disc on the crank-axle from a crown cog-wheel upon an outer dished disc, substantially as described. (6.) In gearing for bicycles, the combination of an outer dished disc having a crown cog-wheel on its periphery, an intermediate dished disc fixed to the crank-axle carrying free planet cogs upon suitable spindles, and a lateral pipe or tube fitted with cog-wheels, upon which tube the wheel is supported about midway in the hub by a webbed flange, substantially as described. (7.) In gearing for bicycles, the combination of a hub centrally upon the crank-axle, carrying hub cogs meshing with free planet wheels mounted on ball-bearing spindles affixed to intermediate saucer-shaped discs, having cones on their inner face for the driving-wheel bearings, and on their outer face for stationary crown cog wheels, an outer stationary dished disc carrying crown cog-wheels, clamped to the frame, and arranged to mesh with the free planet wheels and to transmit their power centrally direct to the driving-wheel, substantially as described.
(Specification, 7s.; drawings, 2s.)

No. 13924.—22nd August, 1901.—HUGH FITZALIS KIRKPATRICK-PICARD, of 44, London Wall, London, England, Metallurgist. Improved process for the recovery of zinc from sulphide ores.

Claims.—(1.) The process of treating sulphide ores containing zinc which consists in mixing the unroasted ore with a reducing agent and carbonaceous material suitable for coking, forming the mixture into briquettes, and distilling the briquettes in such conditions that they are first coked into coherent masses, and finally the zinc is reduced and volatilised, whilst the resulting sulphide is retained in minute particles throughout the coke. (2.) The process of treating sulphide ores containing zinc and other metals which consists in mixing the unroasted ore with a reducing agent and carbonaceous material suitable for coking, forming the mixture into briquettes, and distilling the briquettes under such conditions that they are first coked into coherent masses, and finally the zinc is reduced and volatilised, whilst the resulting sulphide and the non-volatile metals are retained in minute particles throughout the coke.
(Specification, 2s. 6d.)