Mar. 1.] THE NEW ZEALAND GAZETTE.

uniform quantities of pulverised fuel to violent agitation to form a fuel-cloud, and then presenting said fuel-cloud to the injector. (4.) The described method of feeding pulverised fuel to an injector which consists in subjecting the fuel to violent agitation, and simultaneously conveying it forward in a cloud to the injector. (5.) The combination of a rotary roasting-furnace, a stationary chamber extending from the end of the furnace, a pulverised-fuel injector leading to said chamber, a chute from the discharge end of the furnace, a rotary conduit extending from the chute forming a natural draught from the conduit through the furnace, a shield closing the connection between conduit and the chute, and a pipe leading from the hot-air space enclosed by the shield to the combustion-chamber, as set forth. (6.) The combination of the rotary roasting-furnace, the fixed chamber at each end thereof, a removable chamber extending from one of said fixed chambers, and a fuel-burner connected to said chamber, as set forth. (7.) The combination of the rotary roasting-furnace, the fixed chamber at each end thereof, a suspended chamber extending from one of said fixed chambers, an elevated track supporting said chamber, and a fuel-burner connected to set chamber, as set forth. (8.) The combination of the rotary roasting-furnace, the fixed chamber at each end thereof, a removable chamber extending from one of said fixed chambers, a fuel-burner connected to said removable chamber, a passage for a natural draught of air through the furnace, and a branch passage leading from said passage to the removable chamber, as set forth. (9.) In a pulverised-fuel burner, the combination of the fuel-receiving chamber, an air-pressure conduit terminating in a nozzle extending into said chamber, atmospheric-air orifices opening into said chamber in rear of the nozzle for an induced current of air, and an air- and fuel-directing pipe leading from the chamber, as set forth. (10.) In a pulverised-fuel burner, the combination of the fuel-receiving chamber, an air-pressure conduit of limited area extending into said chamber, and atmospheric-air orifices surrounding said air-pressure conduit in rear thereof for an induced current of air into the chamber, as set forth. (11.) In a pulverised-fuel burner, the combination of the fuel-receiving chamber, an air-pressure conduit extending into said chamber, a plurality of orifices in the chamber open to the atmosphere for an induced current of air, an air- and fuel-directing pipe leading from one chamber, and other orifices at the end of said pipe for a further induced current of atmospheric air, as set forth. (12.) In a pulverised-fuel burner, the combination of the fuel-receiving chamber, a compound air-conduit extending into said chamber and having a needle-valve for varying the volume of air admitted, a plurality of orifices to the chamber open to the atmosphere for an induced current of air, an air- and fuel-directing pipe leading from the chamber, as set forth. (13.) In a pulverised-fuel burner, the combination with the high-pressure-air conduit, a fuel-chamber, and a directing-pipe, of a plurality of orifices leading from the chamber to the atmosphere, and means for adjusting the area of the orifices, as set forth. (14.) In a pulverised-fuel burner, the combination with the high-pressure-air conduit, a fuel-chamber, and a directing-pipe, of a plurality of orifices leading from the chamber to the atmosphere, and an adjustable ring having orifices to coincide with the orifices of the chamber, to vary their area, as set forth. (15.) In a pulverised-fuel burner, the combination of the fuel-chamber, the air-pressure conduit leading thereto, a chambered casing surrounding and supporting said conduit having communication with the air-pressure supply and with said conduit, and an air- and fuel-directing pipe leading from the fuel-chamber, as set forth. (16.) The combination with a pulverised-fuel burner of a pulverised-fuel feed therefor, consisting of a small primary conveyer for continuously feeding limited compact quantities of fuel, a secondary conveyer receiving the fuel from the primary conveyer and positively conveying it to the burner, and means for rotating the secondary conveyer at a speed to violently agitate the fuel and deliver it in a cloud to the burner, as set forth. (17.) The combination with a pulverised-fuel burner of a fuel-feed therefor consisting of a hopper having a vertical opening, a worm conveyer mounted vertically in said opening to convey a limited compact quantity of fuel from the hopper, a secondary conveyer to receive such fuel, to positively carry it forward to the burner, and means for rotating the secondary conveyer at a speed to violently agitate the fuel as it is carried forward, as set forth. (18.) The combination with a pulverised-fuel burner of a fuel-feed therefor consisting of a hopper having a plurality of vertical openings, a worm conveyer mounted vertically in each opening to convey limited compact quantities of fuel from the hopper, a driver for said worm conveyers having means for connecting and disconnecting one or more of the worm conveyers therefrom, and a secondary conveyer receiving the fuel from said worm conveyers to carry it forward to the burner, as set forth. (19.) The described downwardly-inclined and rotary furnace provided adjacent its lower and exit end with a surrounding water-jacket having one end closed and the other open, and a water-feed pipe for delivering water into the open end of the jacket. (20.) The combination with a rotary cylindrical furnace, a water-jacket surrounding its end, and having one of its ends closed and the other open, and a water-feed pipe independent of and leading to the open end of the jacket, of a chamber into which the furnace and said jacket projects, and a surrounding air-excluding annulus fixed to the walls of the chamber, as set forth. (21.) The process for automatically handling cement-material and continuously making and finishing Portland cement, substantially as specified and represented in Figs. 1 and 1A of the drawings. (22.) The process for continuously and automatically manufacturing Portland cement which consists in preparing the cement-material, roasting such material, wetting, cooling, and pulverising the resultant clinker, and packing or storing the finished cement.

(Specification, £1; drawings, £1 6s.)

No. 12383.—15th February, 1900.—HURRY AND SEAMAN’S PATENTS, LIMITED, of 2, Queen Anne’s Gate, Westminster, London, England (assignees of Edward Henry Hurry, of Bethlehem, Pennsylvania, United States of America, Engineer, and Harry John Seaman, of Catasauqua, Pennsylvania aforesaid, Chemist). Improvements in the refractory lining of rotary cement-furnaces, and in the method of applying the same.

Claims.—(1.) The described method of coating the fire-brick lining of a rotary cement-furnace with a refractory and adherent layer of cement-material which consists in first heating the firebrick lining to a high temperature (with or without the use of salt or other suitable fusible material), and heating or pressing down on it a layer of cement-material, substantially as described. (2.) A rotary cement-furnace having a firebrick lining protected by an adherent coating of cement material, substantially as described.

(Specification, 2s. 9d.)

No. 12384.—15th February, 1900.—ALEXANDER MCDONALD, of Queen Street, Chippendale, near Sydney, New South Wales, Boot-manufacturer, and EDGAR ERNEST TURNER, of 367, Pitt Street, Sydney aforesaid, and 372, Lonsdale Street, Melbourne, Victoria, Machinery-importer (assignees of Hugh Jones, of Bishop Street, Petersham, near Sydney aforesaid, Engineer). Improvements in tobacco-cutting machines.

Claims.—(1.) In tobacco-cutting machines of the class set forth, the combination and arrangement of the tobacco-channel such as E and a cutting-knife such as D, of a knife-arm such as C, and an L-shaped frame such as A, and crank-wheel such as B1, crank-disc such as B2, pitman-rod such as B3, and knuckle-piece such as B4, substantially as described and explained, and as illustrated in the drawings. (2.) In tobacco-cutting machines of the class set forth, the combination and arrangement of the tobacco-channel such as E, and cutting-arm such as C, carrying knife such as D, of a feed-screw such as F, supported by centre screw such as F1, and bearing such as F2, nut such as G, pusher-piece such as G1, ratchet such as G3, pawl such as G5, lever such as G4, radius bar or lever such as H1, rocking-shaft such as H, arm and arms such as H2, substantially as described and explained, and as illustrated in the drawings. (3.) In tobacco-cutting machines of the class set forth, the combination and arrangement with the feed-channel such as E and feed-screw such as G of a cut-away or turned-off reduced-part such as G2 and of horns such as G7, adapted to take over feed-wheel such as G8, substantially as described and explained, and as illustrated in the drawings. (4.) In tobacco-cutting machines of the class set forth, the combination with a pusher-piece such as G1 and a reciprocating-knife such as D of a presser-plate such as J, bar or spindle such as J2, and lever cam such as J3, with handle such as J4, substantially as described and explained, and as illustrated in the drawings. (5.) The combination and arrangement of mechanical parts all together forming an improved tobacco-cutting machine, substantially as described and explained, and as illustrated in the drawings.

(Specification, 3s. 3d.; drawings, £1 6s.)

No. 12385.—12th February, 1900.—GEORGE RENWICK ROBERTSON, of Sydney, New South Wales, Engineer. An improved fastening for hoop irons with which bales containing wool and other soft produce are secured.

Claim.—The fastenings of hoop irons for securing bales consisting of punching and bending out one or more tongues at one end of the hoop iron and punching out corresponding apertures at the opposite end of the hoop iron, into which apertures the tongues may be inserted, as specified.

(Specification, 1s. 9d.; drawings, 3s.)