390
THE NEW ZEALAND GAZETTE.
[No. 19

of ratifications, and shall remain in force until the expiration of one year from the day on which either party may give notice of its intention to terminate it.

In witness whereof the undersigned Plenipotentiaries have signed the same, and have affixed thereto the seal of their arms.

Done in duplicate at Guatemala, the 5th day of March, 1898.

(L.S.) G. JENNER.
(L.S.) RIC. VILLAFRANCA.

Notice of Acceptance of Complete Specifications.

Patent Office,
Wellington, 6th February, 1901.

COMPLETE specifications relating to the under-mentioned applications for Letters Patent have been accepted, and are open to public inspection at this office. Any person may, at any time within two months from the date of this Gazette, give me notice in writing of opposition to the grant of any such patent. Such notice must set forth the particular grounds of objection, and be in duplicate. A fee of 10s. is payable thereon.

No. 12166.—11th November, 1899.—GEORGE HILLERY ANDERSON, of Waiau, Amuri, Marlborough, New Zealand, Contractor. Improved weatherboarding.*

Claim.—A weatherboard tapering in section from the top to the bottom in wedge shape, and having the inner edge of the lower part of the board milled out to receive the top portion of the board below it, so that each board will be solid against the stud, substantially as specified and illustrated.

(Specification, 1s. 3d.; drawing, 1s.)

No. 12464.—16th March, 1900.—FERDINAND HEINRICH DANNHARDT, of 20, Sherwood Street, Richmond, near Melbourne, Victoria, Mechanical Engineer, and MELROSE MAILER, of 685, Rathdowne Street, North Carlton, near Melbourne aforesaid, Medical Practitioner. An improved earth- or rock-drill.*

Claims.—(1.) In an earth- or rock-drill, a cutter- or tool-carrier adapted to be disconnected from the boring-rods or lining-tubes, so that it can be hoisted up the inside thereof after the manner of a cage in a shaft, substantially as and for the purposes specified. (2.) In an earth- or rock-drill, a cutter- or tool-carrier provided with locking-bolts as h, adapted to project through the side wall thereof and to engage with recesses or slots in the lower end of the boring-rod or lining-tubes, substantially as and for the purposes specified. (3.) In an earth- or rock-drill, a cutter- or tool-carrier fitted with laterally sliding bolts as h in combination with an operating or key plate as i, having inclined surfaces as n,o, engaging with said bolts, said key-plate being weighted and connected to a haulage-rope as m, whereby it may be raised or lowered, substantially as and for the purpose specified. (4.) In an earth- or rock-drill, a cutter-carrier made separate from the boring-rods or lining-tubes, and fitted with expansion cutters as b, in combination with a key-plate as i adapted to fit between said cutters so as to force them outwards when lowered, said key-plate being weighted as well as being connected to a haulage-rope, substantially as and for the purposes specified. (5.) In an earth- or rock-drill, expansion cutters as b, pivotally supported so that they can be swung- outwards, and having removable cutter-points as v, substantially as and for the purposes specified. (6.) In an earth- or rock-drill, a cutter-carrier having waterways or passages as u down the outside, together with means whereby it may be locked to or disconnected from the boring-rods or lining-tubes, in addition to being provided with expansion cutters and means for projecting them beyond the circumference of said boring-rods or lining-tubes, substantially as and for the purposes specified. (7.) In an earth- or rock-drill, a core-barrel as d projecting downwardly from an expansion cutter-carrier, and fitted with a false core-barrel as z in combination with a clip or catch as l connected by rods or otherwise to the haulage rope m, used for locking the cutter-carrier to the boring-rods or lining-tubes and for projecting or releasing the expansion cutters, substantially as and for the purposes specified. (8.) In an earth- or rock-drill, a core-barrel having an eccentric ring as w fitted in a correspondingly eccentric recess in the lower end of said barrel to form a core-breaker, substantially as and for the purposes specified. (9.) In an earth- or rock-drill, a set of boring tools or plates as e screw-threaded on the one face and fitted between correspondingly screw-threaded sleeves as 7, 8, arranged the one on the inside and the other on the outside of the body of the core-cutter, substantially as and for the purposes specified. (10.) In an earth- or rock-drill, a core-cutter consisting of a set of removable adjustable steel chisel-shaped cutters as e, mounted in a ring, and having a set given to their lower and sharpened or pointed ends after the manner of the teeth of a saw, substantially as and for the purposes specified. (11.) In an earth- or rock-drill, the combination with an eccentric core-breaking ring as w, of a false core-barrel as z, having a projection as y engaging with said eccentric ring so as to lock same in its normal position, substantially as and for the purposes specified. (12.) In an earth- or rock-drill, an automatic lever-brake comprising a split conical ring as 32, fitting within a corresponding conical seating, a cap as 34 being arranged to encircle and fit over the brake thus formed, said cap or cover being actuated by a foot-lever or otherwise, substantially as and for the purposes specified. (13.) In an earth- or rock-drill, a guide-cylinder as 23, through which the boring-rods or lining-tubes pass, having its lower end provided with a three-jaw chuck adapted to grip said boring-rods or lining-tubes when said guide-cylinder is rotated in one direction, and to release them when its rotation is reversed, substantially as and for the purposes specified. (14.) In an earth- or rock-drill, a three-jaw chuck carried upon a guide-cylinder through which the boring-rods or lining-tubes pass, and consisting of an outer ring having eccentric inclined surfaces acting upon radially sliding jaws as 29, carrying the sections of a split liner, the whole being constructed and arranged substantially as and for the purposes specified. (15.) In an earth- or rock-drill, a toothed gear disc as 13, through which a boring-rod guide-cylinder as 24 can slide whilst being rotated thereby, substantially as and for the purposes specified. (16.) In an earth- or rock-drill, a toothed gear disc as 13, through which the boring-rod guide-cylinder can slide whilst being rotated thereby, in combination with a winding-drum as 37 mounted loosely upon said gear disc, substantially as and for the purposes specified. (17.) In an earth- or rock-drill, a cutter-carrier having a main cylindrical body as 81, fitted with an inner sleeve as 76 and an outer sleeve as 87, in combination with locking bolts or keys adapted to be either projected or withdrawn, and secured in either their projected or withdrawn positions by said sleeves, substantially as and for the purposes described and explained, and as illustrated in Fig. 23 of the drawings. (18.) In an earth- or rock-drill, a cutter-carrier having an inner and an outer vertically sliding sleeve in combination with pivoted bolts or catches as h, having a projection as 99 on their outer sides so that they will be withdrawn when the outer sleeve is raised, and a boss or projection as 100 on their lower ends so that they will be projected when said outer sleeve is lowered, substantially as and for the purposes described and explained, and as illustrated in Figs. 23 and 24 of the drawings. (19.) In an earth- or rock-drill, a pivoted expanding cutter as 77, having a central passage curved outwardly at its lower end and fitted with an inclined cutter-blade, substantially as and for the purposes described and explained, and as illustrated in Figs. 23 and 27 to 30 of the drawings. (20.) In an earth- or rock-drill, a cylindrical main borer having a conical lower end fitted with a cutter blade or plate as 109, set at an incline, substantially as and for the purposes described and explained, and as illustrated in Figs. 23, 31, and 33 of the drawings. (21.) In an earth- or rock-drill, a cylindrical main borer connected to a cutter- or tool-carrier by a pin or pins as 105 passing transversely through it in combination with other pins or studs as 107, fitting into slots or recesses as 106 in the upper end of said cylindrical borer, substantially as and for the purposes described and explained, and as illustrated in Fig. 23 of the drawings. (22.) In an earth- or rock-drill, a set of discs as 120 mounted upon an eccentric spindle as 119, substantially as and for the purposes described and explained, and as illustrated in Figs. 31, 32, and 35 of the drawings. (23.) In an earth- or rock-drill, a set of discs as 120, mounted upon an eccentric pin or spindle, and each fitted with an outer rotating ring with anti-friction rollers between them, substantially as and for the purposes specified. (24.) In an earth- or rock-drill, a set of eccentrically mounted discs, each having a segmental projection fitting into a segmental recess in the disc below, substantially as and for the purposes specified. (25.) In an earth- or rock-drill, a set of discs mounted upon an eccentric pin or spindle, and connected to a twisted or spirally threaded rod or spindle as 118, rotated by the raising and lowering of a sleeve mounted upon the inside of the cutter- or tool-carrier, and connected to a haulage rope, substantially as and for the purposes specified.

(Specification, £1 2s.; drawings, 4s.)

No. 12478.—21st March, 1900.—EDWARD WATERS, Jun., a member of the firm of Edward Waters and Son, of 131, William Street, Melbourne, Victoria, Patent Agents (nominee of Birger Ljungstrom, of 18, Grefmagnigatan, Stockholm, Sweden, Mechanician). Improvements in balanced rotary steam-engines.*