818
THE NEW ZEALAND GAZETTE.
[No. 17

for removing the obstruction. For the purpose of reducing as much as possible the time required in opening the tack-separating mechanisms, the lower portions or end blocks, and preferably also the cap-plates, of the tack-separating mechanisms for the several raceways are all connected together and secured to the lower ends of the raceways for ready removal. This construction enables the operator to gain access readily to all the tack-separating mechanisms at any time.
[NOTE.—The above extracts from the specification are inserted in place of the claims.]
(Specification, £1 13s. ; drawing, 5s.)

No. 22675.—11th April, 1907.—HILARY QUERTIER, of Wood’s Hotel, Dunedin, Otago, New Zealand, Engineer. Improvements in suction road-cleaners.*

Claims.—(1.) In apparatus for the purpose indicated, in combination, circular brushes, a shaft upon which the brushes are mounted, means for rotating the brushes, hoods enclosing the brushes slotted to receive the brush-shaft and open at the bottom, and fans drawing air and dust from the hoods, substantially as set forth. (2.) In apparatus for the purpose indicated, in combination, circular brushes, a shaft upon which the brushes are mounted, means for rotating the brushes, hoods enclosing the brushes slotted to receive the brush-shaft and open at the bottom, slides covering the slots, adjustable rings surrounding the bottom of hoods, and fans drawing the air and dust from the hoods, substantially as set forth. (3.) In apparatus for the purpose indicated, in combination, circular brushes, a shaft upon which the brushes are mounted, means for rotating the brushes, hoods enclosing the brushes slotted to receive the brush-shaft and open at the bottom, adjustable rings surrounding the bottom of the hoods, springs having pins for passing into holes provided in the rings, and fans drawing the air and dust from the hoods, substantially as set forth. (4.) In apparatus for the purpose indicated, ploughs having hoods, fans for drawing air and dust from the hoods, and pipes connecting the hoods and the fans, substantially as set forth. (5.) In apparatus for the purpose indicated, fans, pipes discharging from the fans, separators having sloping bottoms upon which the pipes discharge, and hoppers into which the separators discharge, substantially as set forth. (6.) In apparatus for the purpose indicated, in combination, fans, pipes discharging from the fans, separators having sloping bottoms upon which the fans discharge, hoppers into which the separators discharge, and an ejector, substantially as set forth. (7.) In apparatus for the purpose indicated, in combination, fans, pipes discharging from the fans, separators having sloping bottoms upon which the fans discharge, hoppers into which the separators discharge, a tank containing water, and a pipe leading from the separator and discharging upon the surface of the water, substantially as set forth. (8.) In apparatus for the purpose indicated, a fan, and a pipe extending to the ground adapted to swivel sideways of the apparatus and connected to the fan, substantially as set forth. (9.) In apparatus for the purpose indicated, a fan, a pipe extending to the ground adapted to swivel sideways and connected to the fan, a telescopic end to the pipe, and means for suspending the telescopic end above the ground, substantially as set forth. (10.) In apparatus for the purpose indicated, a plough adapted to fit a tramway-rail, a hood enclosing the plough, and a fan for drawing air and dust from the hood, substantially as set forth. (11.) In apparatus for the purpose indicated, a hood, a brush within the hood, and a fan for drawing air and dust from the hood, substantially as set forth. (12.) In apparatus for the purpose indicated, a hood open at the bottom, a leather band surrounding the bottom of the hood and depending therefrom, protectors of metal secured to the band, and a strap securing the band to the hood, substantially as set forth. (13.) In apparatus for the purpose indicated, rotatable brushes, hoods enclosing the brushes and open at the bottom, fans drawing air and dust from the hoods, and a branched pipe connected to the discharge of the fans and extending to the track between the brushes, substantially as set forth.
(Specification, 6s. 6d. ; drawing, 2s.)

No. 22679.—12th April, 1907.—ARTHUR SIDNEY THWAITES, of Christchurch, New Zealand, Farmer. Improvement in ploughshares.

Claim.—In ploughshares, a removable nose or point portion secured to the forward end of the share by means of a tongue-and-groove fastening, the outer end of such tongue being flush with the back edge of a removable nose portion, such nose portion being so shaped that it may be reversed thereon in order to present a fresh wearing-surface, substantially as specified.
(Specification, 1s. 6d. ; drawing, 1s.)

No. 22692.—13th April, 1907.—ROBERT RUTHERFORD DOUGLAS, of Dunedin, New Zealand, Engineer. Improvements in protectors for the links of running machinery.*

Claims.—(1.) A protector for the links of running machinery characterized by the fact that it is held in position by extending over and being secured to a flange projecting from one or both sides of the link, substantially as described. (2.) A protector for the links of running machinery according to claim 1 in which the projecting flange or flanges are formed of angle-iron secured to the links, substantially as described. (3.) A protector for the links of running machinery according to claim 1 in which the projecting flange or flanges and the wearing-strip are composed of several corresponding separate parts, substantially as described.
(Specification, 2s. 6d. ; drawing, 1s.)

No. 22777.—6th May, 1907.—WILLIAM BROWN MILLER, of Tokonui, New Zealand, Farmer. An improved steam turbine or rotary engine.*

Claims.—(1.) In steam turbine rotary engines, a disc or wheel mounted upon the power shaft and formed with faces curving outwardly from its periphery, blades secured to each of such faces each curved in the direction of rotation and extending radially inwards from the periphery of the wheel with their inner ends turned outwards at approximately right angles thereto, an annular plate secured upon the outer edges of the blades and enclosing passages between the blades, and means whereby jets of steam may be led to the outer ends of such passages and be led away from the inner ends thereof, substantially as specified. (2.) In steam turbine rotary engines, in combination, a fixed casing, a circular plate extending transversely across within the casing and formed with a number of apertures passing through it inclined in the direction of rotation of the engine, a wheel or disc mounted concentrically within the circular plate and formed with steam-passages extending radially inwards from its periphery and out through its sides, and means whereby the apertures in the circular plate may be covered or opened, substantially as specified. (3.) In steam turbine rotary engine, in combination, a fixed casing, a circular plate extending transversely across within the casing and enclosing a steam-chest between it and the casing, apertures formed in the circular plate and inclined in the direction of rotation of the engine, a wheel rigidly mounted upon a power shaft arranged concentrically within the circular plate and formed with side faces curving outwards from the periphery thereof, blades secured to each of such faces curved in the direction of rotation of the wheel and extending inwards from the periphery of the wheel, annular plates secured upon the outer edges of the blades and enclosing passages between them, and steam-exhaust chambers on each side of the casing into which such passages open, substantially as specified. (4.) In steam turbine rotary engines, in combination, a fixed casing, a circular plate extending transversely across within the casing and formed with a number of apertures passing through it inclined in the direction of rotation of the engine, a wheel or disc mounted concentrically within the circular plate and formed with steam-passages extending radially inwards from its periphery and out through its sides, a plate encircling the circular plate and capable of sliding movement thereon, port openings in such plate adapted to coincide with the apertures in the inner plate, a rack upon the outer plate, a pinion gearing with such rack, and means outside the casing for rotating the pinion, substantially as specified. (5.) The general arrangement, construction, and combination of parts in my improved steam turbine or rotary engine, substantially as described and explained, and as illustrated in the drawings, and for the several purposes set forth.
(Specification, 6s. ; drawing, 3s.)

No. 22802.—10th May, 1907.—JAMES ERNEST TATHAM, of No. 2 Hunter Street, Sydney, New South Wales, Australia, A.M.I.M.E., Gas-engineer, and ALEXANDER SMITH, of No. 88 Beattie Street, Balmain, near Sydney aforesaid, Merchant. Improvements in gaslight-burners.*

Claims.—(1.) In a gaslight-burner having Bunsen orifices and incandescent mantle or body, of a two-way cock having