Feb. 4.] THE NEW ZEALAND GAZETTE. 461

No. 17414.—22nd December, 1903.—Augustus Lotz, of 2424, Gough Street, San Francisco, California, United States of America, Machinist. Pneumatic carpet-renovator.

Claims.—(1.) The combination in a pneumatic cleaner, of a head having a centrally located slit for the discharge of air and a supplemental head having a plurality of suction-channels substantially parallel with and upon each side of the air-blast slit. (2.) The combination in a pneumatic cleaning-apparatus, of a transversely extended head having a centrally located air-blast slot, and air-passages connected therewith, a supplemental head enclosing the first-named head and having a plurality of suction-channels with their mouths located substantially parallel with and upon each side of the air-blast slit, and passages connecting with said channels for the discharge of dust which is drawn into them. (3.) The combination in a pneumatic cleaning-apparatus, of a central air-blast channel having convergent sides at the lower end, plates fixed upon said sides and movable thereon to form an adjustable slit between their contiguous edges. (4.) The combination in a pneumatic cleaning-apparatus, of an elongated head having an adjustable centrally located slot in the bottom and connections whereby an air-blast is delivered therethrough, a plurality of suction-slits on each side of said air-blast passage and adapted to withdraw the dust in outwardly therefrom, the ends of said head being tapered and convergent, whereby the apparatus may be operated in corners. (5.) A pneumatic cleaning-apparatus comprising a head having a substantially central adjustable slot extending from end to end, a vertical tubular stem from which air under pressure is delivered thereto, a supplemental head enclosing the first-named head and having a plurality of channels with open mouths located upon each side of the central slot, and a suction-passage connecting with said surrounding channels, a handle, means for changing the angle of said handle vertically and horizontally with relation to the head without closing the passages, a tortuous passage extending through and around the horizontal joint of the handle, a chamber surrounding the upper part of the air-conducting stem with which said passage connects, and perforations in the stem located within said chamber whereby the air is transmitted to the discharge-slit. (6.) The combination in a pneumatic cleaning-apparatus, of a casing or head having its under-periphery flush with the surface to be cleaned, said head provided with a narrow slit in the bottom communicating with a suction discharge-pipe, and an inlet-means through which cleansing-fluid is induced and made to impinge upon the surface passed over by the apparatus. (7.) The combination in a pneumatic cleaning-apparatus, of a casing enclosing a receiving-chamber connected with a suction discharge, said chamber having a contracted portion to form an inlet-slit in its bottom, and having a fluid-supply passage contracted to form a slit opening adjacent to the first-named slit, the wall of the casing forming the partition between said slits and beneath which partition the fluid passes from the supply-passage into the receiver, whereby an impinging and sweeping action of the cleansing-fluid is produced upon and over the surface to be cleansed.
(Specification, 9s.; drawings, 3s.)

No. 17418.—29th December, 1903.—George Garibaldi Turri, of Salisbury Building, Queen Street, Melbourne, Victoria, Patent Agent (nominee of Thomas Edwards, of Colorado Springs, Colorado, United States of America, Engineer and Metallurgist). Improvements in mechanically-rabbled ore-roasting furnaces.

Claims.—(1.) In an ore-roasting furnace, a plurality of longitudinal series of rabbles, which are rotatable upon a hearth, their hearth-areas overlapping both laterally and longitudinally. (2.) In an ore-roasting furnace, a plurality of longitudinal series of rabbles, which are rotatable upon a hearth, their hearth-areas overlapping laterally, diagonally, and longitudinally. (3.) In an ore-roasting furnace, a plurality of longitudinal series of rabbles, adapted as a whole to rabble the ore both along and across a hearth which is substantially wider than the hearth-area of an individual rabble. (4.) In an ore-roasting furnace, a plurality of longitudinal series of narrow elongated roof or arch apertures corresponding in number with the rabbles of the furnace, and for the purposes set forth. (5.) In an ore-roasting furnace, a plurality of longitudinal series of narrow elongated roof or arch apertures corresponding in number with the rabbles of the furnace, and extending laterally as illustrated. (6.) In an ore-roasting furnace, a narrow elongated roof or arch aperture extending laterally and having a lining therein, as and for the purposes set forth. (7.) In an ore-roasting furnace, the combination with the plurality of longitudinal series of rabbles having stems, of means outside the furnace for rotating the said stems, and a plurality of series of apertures through which said stems pass outside the furnace. (8.) In an ore-roasting furnace, a roof or arch supporting line shafts and gearing adapted to simultaneously rotate the stems of a plurality of series of rabbles, as set forth, each of the said stems passing through a narrow elongated aperture in the roof or arch, through which the rabble can be passed vertically, as described. (9.) In an ore-roasting furnace having a plurality of longitudinal series of rabbles having overlapping hearth-areas as set forth, the combination therewith of means to rotate the rabbles of all the series simultaneously at the same speed. (10.) In an ore-roasting-furnace hearth, one or more recesses or receptacles for the storage of hot roasted ore, as set forth. (11.) In an ore-roasting-furnace hearth, one or more closable discharge-holes and one or more closable storage recesses or receptacles for hot roasted ore within the hearth area or areas of a rabble or rabbles, as set forth.
(Specification, 7s.; drawing, 1s.)

No. 17423.—27th January, 1903.—Arthur William Boon, of 60, Cold Harbour Lane, Brixton, Surrey, England, Solicitor’s Clerk. Improvements relating to driving and gearing mechanism for cycles, motor cars, and other machinery.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Claims.—(1.) A sprocket wheel having a variable circumference and a fixed number of teeth the pitch of which varies with the variation of the circumference of the wheel, said teeth being so mounted that those that are at any time out of pitch with the driving-chain are inoperative, as set forth. (2.) A variable sprocket wheel comprising a drum or disc such as A, a series of blocks such as B mounted in said drum or disc so that they are radially adjustable therein, teeth such as C pivoted directly or indirectly to said blocks, and means for varying the radial positions of said blocks or their equivalents, as and for the purpose set forth. (3.) The improved variable sprocket wheel constructed and arranged to operate substantially as described and illustrated by the drawing.
(Specification, 3s. 3d.; drawing, 1s.)

No. 17437.—7th January, 1904.—Soda-stream, Limited, and William Hucks, Jun., Engineer, both of James Street, Camden Town, London, England. Improvements in apparatus for aerating liquids or charging them with gas.

Claims.—(1.) An apparatus for aerating liquids or charging them with gas, the said apparatus consisting of a casing or casting provided with means for connecting it to a cylinder or container of compressed or liquefied gas, and with passages, one of such passages consisting of a tube for the admission of gas into the liquid in the bottle, or the like, this tube passing through another of the passages provided with means for making a joint around the mouth of the bottle, or the like, the third passage being provided with a valve weighted or controlled so as to open at the desired pressure, substantially as described. (2.) An apparatus for aerating liquids or charging them with gas, the said apparatus consisting of a casing or casting provided with means for connecting it to a cylinder or container of compressed or liquefied gas, and with passages, one of such passages consisting of a tube for the admission of gas into the liquid in the bottle, or the like, the said tube passing through another of the passages provided with means for making a joint around the mouth of the bottle, or the like, the third passage being provided with a valve upon which the desired pressure is exerted by a centred cage or guard, substantially as described. (3.) An apparatus for aerating liquids or charging them with gas, the said apparatus consisting of the arrangement and combination of parts substantially as described and illustrated in the drawings.
(Specification, 5s.; drawing, 1s.)

No. 17438.—7th January, 1904.—William Vickery, of Sand Street, Milverton, Somersetshire, England, Builder; George Vickery, of Mill House, Norton Fitzwarren, Somersetshire aforesaid, Builder; and Tom Harding, of 2, The Square, Wivelscombe, Somersetshire aforesaid, Ironmonger. Improvements in and relating to fastening and sealing boxes, cases, or the like.

Claims.—(1.) The improved sealing-lock for boxes or cases comprising a suitable case or chamber, a latch pivotally supported at its lower end within the chamber and provided at its upper end with a tooth adapted to engage a suitable hasp, a slot in the latch for facilitating the unlocking of the latch by means of a lever implement such as is described, a spring for actuating the latch, a slot in the front plate of the case permitting access to the latch and furnishing a fulcrum upon which the lever turns in unlocking the latch, and an