Mar. 6.] THE NEW ZEALAND GAZETTE. 575

ing through the hollow interior of the draw or thrust bar, substantially as specified. (8.) The combination with a base or bed frame having a fixed post or abutment thereon and a concentrator table or deck having sliding connection with the bed or base frame of a movable bridge-piece or abutment, means for regulating the tension thereof, a crankshaft, a pitman having oppositely extending sockets therein, bearing-boxes held in said sockets, toggle-arms extending in opposite directions from these bearing-boxes, a draw or thrust bar connected with the table and adapted to abut against the movable abutment or bridge-piece, a box carried by one end of the draw or thrust bar for the reception of one of the toggle-arms, a hanger adjustably connected with the post on the bed or base frame, and a bearing-box carried thereby for the reception of one end of the other toggle-arm, substantially as specified. (9.) The combination with a bed or base frame and a concentrator deck or table having sliding connection with respect thereto, of a draw or thrust bar connected at one end with one end of the table, a steel spring support for the opposite end, a bridge-piece or movable abutment mounted outside such steel spring support, a tension-device for holding the abutment or bridge-piece inward, its upper end located in the path of the draw or thrust bar, and means for throwing the latter toward the bridge-piece with a positive motion, substantially as specified. (10.) The combination with a bed or base frame and a concentrator deck or table having sliding connection with respect thereto of a draw or thrust bar connected at one end with one end of the table, a steel spring support for the opposite end, a bridge-piece or movable abutment mounted outside such steel spring support, a tension-device for holding the abutment or bridge-piece inward, its upper end located in the path of the draw or thrust bar, and means for tilting the table laterally with the connection between the draw or thrust bar as an axis, substantially as specified. (11.) The combination, with a bed or base frame, of a concentrator deck or table having sliding connection therewith, said deck or table having a rod secured to its lower surface and extending in the axial centre thereof, a draw or thrust bar connected with this rod, and means for reciprocating the latter positively against a yielding abutment, substantially as specified. (12.) The combination, with a bed or base frame, an intermediate frame, and means for tilting the latter with respect to the bed or base frame, of a concentrator deck or table having sliding connection with the intermediate frame and means for reciprocating the deck or table, substantially as specified. (13.) The combination, with a bed or base frame, an intermediate frame carrying guides, oppositely inclined wedges interposed at opposite sides between said frames, and means for moving these wedges simultaneously in the same direction whereby one edge of the intermediate frame is raised while the other is lowered, of a concentrator deck or table having tracks on its surface corresponding in position and adapted to enter and reciprocate in the guides on the intermediate frame, substantially as specified. (14.) The combination, with a bed or base frame, an intermediate frame carrying guides, oppositely inclined wedges interposed at opposite sides between said frame, and means for moving these wedges simultaneously in the same direction whereby one edge of the intermediate frame is raised while the other is lowered, of a concentrator deck or table having tracks on its under-surface corresponding in position and adapted to enter and reciprocate in the guides on the intermediate frame, and means for reciprocating the concentrator deck or table, substantially as specified.
(Specification, 9s. 6d.; drawings, 2s.)

No. 14490.—31st January, 1902.—VICTOR GEORGE SWINBOURNE, of Remuera, Auckland, New Zealand, Storeman. An improved divider compass.

Claim.—In quadrant compasses, marking the face of the arc piece of the compass with markings at regular distances apart corresponding to the distances apart through which the points of the compass are moved, as specified.
(Specification, 1s. 3d.; drawings, 1s.)

No. 14536.—18th February, 1902.—ODILON BALTZAR HANNIBAL HANNEBORG, of Uranienborgveien, 2, Christiania, Norway, Landowner. An improved excavator.

Description of Invention.—The present invention relates to an excavating machine of the kind in which the earth is excavated by means of a screw which is placed on a machine driven by a traction-engine or the like. The novelty of the invention consists principally in the aforesaid screw forming a comparatively narrow cutter which winds round the vertical rotating axis with greater or less conicity like a screw-thread, in such a manner that between the axis and the cutter itself there is a correspondingly conical space. This space receives the earth cut by the edge of the cutter.
This earth falls down to the bottom of the screw, and from thence is conveyed to the surface of the ground by a suitable conveyor. A machine of this kind is specially adapted for excavating old ditches, but it can also be employed for cutting new ditches. This machine, like the excavating machines previously patented by the same inventor, has also three frames placed one inside the other, but these frames are differently constructed here, and, as the machine runs on rigid rails, the various mechanisms of movement are also of a different kind.
[NOTE.—The number and length of the claims in this case preclude them from being printed, and the foregoing extract from the descriptive part of the specification is inserted instead.]
(Specification, 10s. 6d.; drawings, 5s.)

No. 14540.—19th February, 1902.—NIELS BIDSTRUP, of Sydney Street, Broadford, Victoria, Grazier (assignee of James Marchbank, of Pinnager Street, Broadford aforesaid, Engineer). An improved automatic quantitative fluid-register.

Claims.—(1.) As an improved automatic quantitative fluid-register, a receiving-tank with base well and outlet-valve such as A, H, and H¹; a float-guide vessel with base inlet such as B, b, set centrally in such tank A; a float, suspending-rod, and cord or chain such as C, C¹, C²; revolving barrel and pointer such as D, F, mounted and journalled in a suitable frame; a semicircular or annular scale-plate and scale such as G attached to frame; and counterbalance weight and cord such as E, fitted, connected, and operating in conjunction as and in manner described, and as illustrated in Figs. 1 and 2. (2.) As an improved automatic quantitative fluid-register, a receiving-tank with base well and outlet-valve such as A, H, H¹; a float-guide vessel with base inlet such B, b, set centrally in such tank A; a float and ratchet-rod such as C¹; revolving-barrel spindle, ratchet-wheel, and pointer such as D¹, D², F; and a semicircular or annular scale-plate and scale such as G, attached to a suitable frame, fitted, connected, and operating in conjunction as and in manner described, and as illustrated in Fig. 3.
(Specification, 3s.; drawings, 1s.)

No. 14543.—19th February, 1902.—JOHN GREEN, of 6, Hammerton Street, Leeds Road, Bradford, York, England, Watchmaker and Jeweller. Seed-sowing machine.

Claim.—In a seed-sowing machine of the class described, the combination of a hopper with a seed-distributing cylinder R, provided with recesses 1 and 2 of the same pitch but not in the same axial line of the cylinder, and with another series of recesses of a different pitch around the periphery, means for rotating said cylinder, a sliding-plate m and means for operating same, a conducting-spout, share for opening furrow in ground, and means for closing said furrow upon the deposited seed, substantially as set forth.
(Specification, 4s.; drawings, 2s.)

No. 14545.—20th February, 1902.—ARTHUR AUBREY FRANCIS, of Ponte di Nossa, Bergamo, Italy, Manager of Ore-concentrating Works. Improvements in ore-concentrating apparatus.

Claims.—(1.) A transversely inclined longitudinally reciprocating ore-concentrating table adapted to be rocked transversely about a longitudinal axis, for the purpose specified. (2.) The aforesaid ore-concentrating table provided with a series of longitudinally tapering riffles, substantially as and for the purpose specified. (3.) The aforesaid ore-concentrating table provided with a series of riffles, each succeeding riffle toward one side of the table being of greater height than the immediately preceding riffle, substantially as and for the purpose specified. (4.) Apparatus having its parts constructed, arranged, and adapted to operate substantially as described with reference to the drawings, for the purpose specified.
(Specification, 5s. 6d.; drawings, 1s.)

No. 14546.—20th February, 1902.—THE KERN BURNER COMPANY (LIMITED), of Kern Buildings, Gravel Lane, Southwark, London, England (assignees of Charles Clamond, of 15, Rue Picot, Paris, France, Engineer). Improvements in incandescence mantles.

Claims.—(1.) An incandescence mantle composed of thorium-oxide, zinc-oxide, and cerium-oxide or other excitant, treated substantially as described. (2.) The use for the manufacture of an incandescent mantle of a mixture of thorium-oxide and zinc-oxide, substantially as described.
(Specification, 4s. 3d.)