Oct. 31.] THE NEW ZEALAND GAZETTE. 2141

No. 14143.—22nd October, 1901.—FREDERICK GALE, of High Street, Lancefield, Victoria, Engineer, and JOHNSTON HEMPHILL, of Lancefield aforesaid, Farmer. Improvements in simultaneous sowing, manuring, and harrowing attachments to ploughs.

Claims.—(1.) In attachments to ploughs, the combination of arms 42 and 44 and crank 43 with the sprocket and clutch mechanism substantially as set forth. (2.) In attachments to ploughs, a hopper having for the purpose described the three doors 6, 13, and 20, all substantially as set forth. (3.) In attachments to ploughs, a force-feed chamber 18 having the parts 21 and 22, side feed-wheel 14, aperture 19, door 20 in a hopper having also apertures 11, 12, the latter being closed when door 20 is open to 18, substantially as described. (4.) In attachments to ploughs, a hopper having the three compartments described, one for manure, the others for seed, one of the latter being a force-feed chamber, all substantially as set forth. (5.) In attachments to ploughs, in combination with the hopper referred to in claim 4, a seed-wheel having three modes of feeding, namely, pockets, a toothed groove, and side feed-teeth, as and for the purposes set forth. (6.) In attachments to ploughs, the harrow connection as described with reference to Figs. 2 and 4. (7.) In attachments to ploughs, the combination with a drill as 9, having a bar 25, of parts 26 and 27, as and for the purposes set forth. (8.) In attachments to ploughs, the bent lever 36 having the spring fork 35 and the lug 38, for the purposes set forth. (9.) In attachments for ploughs, a harrow-blade having the aperture 29. (10.) In attachments for ploughs, the combination of the parts 34 to 41 as and for the purposes set forth.
(Specification, 4s. 3d.; drawings, 2s.)

No. 14147.—23rd October, 1901.—ADOLF WALDBAUR, of 14, Kanonenweg, Stuttgart, Empire of Germany, Doctor of Philosophy. An improved method of heating liquids, and apparatus therefor.

Claims.—(1.) The process of heating liquids which consists in introducing flames or products of combustion directly into the liquid to be heated, substantially as described and set forth. (2.) The process of heating liquids which consists in introducing the liquid to be heated into the heating-chamber in the form of contracted sprays or jets, and injecting the flames or products of combustion directly into the liquid, whereby the sprays or jets of liquid will create a forced draught or suction which will intensify and perfect the combustion of the fuel, substantially as described and set forth. (3.) In a liquid-heater, a heating-pipe and means for injecting liquid into the pipe, in combination with a flame-generator directly communicating with the heating-pipe, the said heating-pipe being provided with air-openings for supplying air to the flame-generator, substantially as described, and for the purpose set forth. (4.) In a liquid-heater, a heating-pipe and means for injecting liquid into said pipe, in combination with an air-and-gas burner directly communicating with the heating-pipe, the said heating-pipe being provided with air-supply openings in the rear of the air-and-gas burner, substantially as described, and for the purpose set forth. (5.) In a liquid-heater, a heating-pipe provided with air-openings at its rear portion and a liquid sprayer, in combination with a Bunsen burner or burners directly communicating with the heating-pipe, substantially as described, and for the purpose set forth.
(Specification, 6s.; drawings, 1s.)

No. 14150.—23rd October, 1901.—BARON VICTOR BARRETO, of 99, Cannon Street, London, E.C., England. Improvements in the process of manufacturing building-blocks or bricks, and apparatus for use in connection therewith.

Claims.—(1.) The improved process for the manufacture of bricks from ground ashes, clinkers, sand, or the like, by the admixture of lime therewith in the proportions stated, in combination with the special apparatus therefor, substantially as described and illustrated. (2.) In a process for the manufacture of bricks as described, the improved apparatus for the slaking of lime, consisting of rolling drum mounted on rails and revolved, substantially as arranged, described, and illustrated. (3.) In the process for the manufacture of bricks as described, consisting of a heating-chamber, into which the bricks or blocks made according to this process are placed and subjected to the action of steam or superheated steam, substantially as described and illustrated. (4.) In a process for the making of bricks, stone, or suchlike, the slaking of the lime mixed with sand or the like in a closed vessel, to which the admission of the necessary moisture is regulated, the said closed vessel being suitably mounted as to be capable of revolving, as described.
(Specification, 5s.; drawings, 4s.)

No. 14156.—24th October, 1901.—ROBERT MELVILLE SCOTT, of the Boulevard, Strathfield, near Sydney, New South Wales, Contractor. Improvements in and relating to the combined construction of ships and their screw propellers.

Claims.—(1.) A propeller-boss, having either fixed or removable blades, and being so proportioned relatively to the predetermined diameter of the blades as to dispense with the thickened root-formation, so as to secure on either side of a known line of efficiency a desired effective working-surface, in the manner described and shown, and for the purposes set forth. (2.) A cylindrical and elongated propeller-boss free from nodular projections, proportioned in the manner described, and adapted to receive a watertight casing to enclose the propeller-blade when submerged, as described and shown, and for the purposes set forth. (3.) In the construction of propellers proportioned as described, a cylindrical and elongated boss secured to the propeller-shaft, a forwardly situated conical chamber adapted to receive the rearwardly projecting end of a shipbuilder's tube proportioned in the same manner as the boss, and of equal diameter throughout its entire length, and a stern tube associated therewith, a rearwardly attached buoyant cone disassociated from the propeller-shaft and constructed with securing and detachable devices, in the manner described and for the purposes set forth. (4.) In the construction of propeller-bosses proportioned in the manner described, and having detachable buoyant cones associated therewith, the alternative construction of the abutting parts consisting of the forward portion of the boss and the rearward portion of a stern tube of similar diametrical proportions throughout its entire length as the boss, as described, and as illustrated in Figs. 6, 7, and 8 of the drawings. (5.) In the construction of propeller-bosses proportioned in the manner described, the forwardly situated radial vanes chambered as may be desired, in combination with the abutting parts of a shipbuilder's tube and a circumferential flange, perforated, or otherwise forming part of the boss, as described and shown, and for the purposes set forth. (6.) A buoyant and detachable cone, of like proportions with an associated propeller-boss, the forwardly abutting part of which forms the continuation of the elongated part of the said boss when fitted thereto, and is provided with an inner plate having securing-brackets, a forwardly extension end, and screw covers giving access to the securing-parts, as described and shown, and for the purposes set forth. (7.) In the construction of a buoyant cone of the kind described, the combination therewith, at the conical end, of a stem adapted to support, in conjunction with a suitable bearing, the said buoyant cone, as described and shown, and for the purposes set forth. (8.) In the construction of buoyant cones of the kind described, the alternative arrangement comprising a fixed conical end suitably secured to the rudder-post, and having upon the inner plate a forwardly projecting trunnion, and adapted to be a continuation of an improved propeller-boss of the kind described, as described and shown, and for the purposes set forth. (9.) In a screw propeller, proportioned in the manner described, and having removable blades of diminished thickness, the combination, with the said propeller, of a blade-boss adapted to the enlarged proportions of any desired number of openings formed in the said propeller-box to give access to the securing studs or bolts, and having covering-plates suitably secured to fill the said opening and set flush with the surface of the said boss, as described and shown, and for the purposes set forth. (10.) In the construction of propeller-blades adapted to fit an improved boss of the kind described, the combination with the attachable blade-boss pierced in the manner described, of the outstanding portion of such blade formed of a diminished thickness resulting from the elimination of the root portion due to the inordinate enlargement of the propeller-boss, as described and shown, and for the purposes set forth. (11.) In the construction of vessels having propellers, a shipbuilder's tube proportionately enlarged in its entire length extending from the vessel's hull to its abutment with a propeller-boss similarly dimensioned, freed throughout from nodular projections, and having either an extension or suitably shaped end projecting into and abutting the said propeller-boss, and a stern tube, the outwardly extending end of which enters a recess formed in the said propeller-boss, as described and shown, and for the purposes set forth. (12.) In vessels carrying one or any desired number of propellers, the combination comprising a shipbuilder's tube enclosing a stern tube, a propeller-boss having any desired number of blades, a buoyant cone secured to the said boss, the whole constructed and arranged in the manner described and as illustrated in the drawing, and for the purposes set forth. (13.) In vessels carrying one or any desired number of propellers having bosses adapted to be associated with a watertight casing, a removable or telescopic tube forming either a part of the vessel or an adjunct thereto, as described and shown, and for the purposes set forth. (14.) In the construction of watertight tubes for enclosing propeller-blades, a casing, a lower seating flange,