Oct. 19.] THE NEW ZEALAND GAZETTE. 2461

of cross section of any merchantable tool-steel that is adapted for use as rock-cutting drill-bits without forming or placing upon them collars or shoulders or other devices that act as an abutment for defining the length of the shank that projects into the drilling-engine within the reciprocal path of the piston-hammer. (13.) To provide means within the drilling-engine for preventing dirt, sand, or grit of any kind or character which may be on the shank of the rock-cutting drill-steel at the time it is inserted in the rock-drilling engine, or that might in any other way get into the engine, from working into the piston-hammer cylinder of the drilling-engine. (14.) To provide a rock-drilling engine having a manually operated drill feeding and rotating mechanism that is sensitive enough to enable an operator to feel the character of the rock he is drilling in, and thus enable him to govern the feeding of the rock-cutting drill-bit to suit the hard and soft spots and the cracks, crevices, talcy seams, &c., encountered in drilling holes in rock. (15.) To provide a manually operated drill-bit-rotating and drill-bit-feeding device that operates through the medium of the rotation of the feed-screw that is especially designed for use with piston-hammer rock-drills. (16.) To provide a piston-hammer striking-pin that has an operative drill-bit striking and adjusting movement relative to the piston-hammer and the drill-bit. (17.) To provide a drill-bit holding-sleeve and a striking-pin co-operatively arranged to hold and strike the drill-bit, and a buffer device arranged to protect the striking-pin and drill holding-sleeve from the blows of the piston when a drill-bit is in the sleeve but is not in operative position against rock, or in case the piston is operated when a drill-bit is not in the sleeve. (18.) To provide a drill-bit having a shank consisting of a straight piece of the steel of which the drill-bit is made without a collar or shoulder or a turned portion, and a drill holding-sleeve adapted to receive it and hold it in operative striking relation to the piston-hammer. (19.) To provide a small light-weight rock-drilling engine of simple construction that can be reciprocally fed in a supporting shell that is adapted to be supported by any of the drill-clamping and supporting columns or tripods in common use.

[NOTE.—The above extract from the specification is inserted in place of the claims.]

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

No. 19986.—6th September, 1905.—EDWARD THOMAS POLLARD, Engineer, and EMIL LEO BEHRMANN, Merchant, both of 49, Cannon Street, London, England. Improvements in cigarette-machines.

Claims.—(1.) In a cigarette-making machine, the combination of a V-grooved wheel with compression-wheels and stationary wedges entering the groove, substantially as described. (2.) In machines such as are claimed in claim 1, mounting the compression-wheels after the first in a frame, substantially as described. (3.) In a cigarette-making machine, the method of driving the paper-carrying belt substantially as described and illustrated. (4.) In a cigarette-making machine, the combination of a rod carrying a rotary knife, a cam moving the rod longitudinally, and a second cam rocking the rod, substantially as described. (5.) In a cigarette-making machine, the cutting apparatus substantially as described, with reference to Figs. 3, 4, and 5.

(Specification, 3s. 6d. ; drawing, 1s.)

No. 19987.—6th September, 1905.—HENRI PIEPER, of 18, Rue des Bayards, Liege, Belgium, Manufacturer. An improved method of governing or controlling electrically driven machines.

Claim.—A method of equalising or rendering uniform the power absorbed by intermittently working machines driven by continuous electric currents, in which method a fly-wheel is utilised, which is coupled to a single dynamo connected in series with the receiver to absorb work during the stoppages of the motor and to subsequently restore the absorbed power when the motor is running (during which time the fly-wheel machine may slacken and even stop), the method being characterized by the fact that the motor is controlled or regulated by acting on its excitation circuit alone with a view to maintaining a current of the proper value for insuring that the power drawn from the generator shall be constant whether the motor is running or at rest.

(Specification, 8s. ; drawings, 2s.)

No. 20017.—11th September, 1905.—FREDERICK JAMES SHELTON, of Wellington, New Zealand, Importer. An improved valve.

Extract from Specification.—The valve is formed of a main casting A comprising a cylindrical chamber B with side passages C, D, leading from it at right angles and at points diametrically opposite to each other. The extremities of these branches are tapped to receive the gas or water service pipes, and thus to allow of the valve being placed in position to control the service. Fitted closely within the cylinder B is a plug or plunger E formed with a groove F extending circumferentially around it. This plug is made of such a length that the portion of its length below the groove F will be capable of closing the mouths of the branches C and D leading from the cylinder. To the top of the plug the rod G is attached, and this rod passes out through a nut H closing the top of the cylinder, and to its extremity is attached a thumb-piece J. By moving the plug the groove F may be placed opposite the branches C and D, so as to allow of gas or water passing around the plug and flowing from one branch to the other, and may be moved away therefrom so as to close the opening. . . . A by-pass L (Fig. 3) may be formed in the casting, and leading from the branch C around through the wall of the cylinder B into the branch D. A small set screw (1) is screwed into the casting, and its point enters the by-pass. By means of this screw such by-pass may be closed or opened to any desired degree so as to govern the amount of gas passing through it.

[NOTE.—The above extracts from the specification are inserted in place of the claims.]

(Specification, 2s. 9d. ; drawing, 1s.)

No. 20019.—12th September, 1905.—PINTSCH’S PATENT LIGHTING COMPANY, LIMITED, of 38, Leadenhall Street, London, England, Manufacturers (assignees of Julius Pintsch, of 72–73, Andreasstrasse, Berlin, German Empire, Engineer). Improvements in inverted incandescence gas and like lamps.

Claims.—(1.) In inverted incandescence gas or vapour lamps, hinging the Bunsen tube so as to provide access to the nipple from below, substantially as described. (2.) In inverted incandescence gas or vapour lamps, a Bunsen tube hinged to the supporting frame and normally held coaxial with the nipple by a yielding stop or catch, substantially as described. (3.) In the apparatus claimed in the preceding claim, an adjustable sleeve on the Bunsen tube, substantially as and for the purpose specified. (4.) In inverted incandescence gas or vapour lamps, supporting the mantle from a hinged reflector whereby ready access is obtained to the mantle from below the lamp, substantially as described. (5.) An inverted incandescence gas or vapour lamp constructed substantially as described and illustrated.

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

No. 20023.—12th September, 1905.—WILLIAM ERNEST HUGHES, of Queen’s Chambers, Wellington, New Zealand, Registered Patent Agent (nominee of Hugo Lentz, of 10 and 11, Potsdamerstrasse, Germany, and Charles Bellens, of 43, Rue de Chezy, at Neuilly-sur-Seine, France, Mechanical Engineers). Improvements in and relating to steam-distribution for locomotives.

Claims.—(1.) The application to locomotives for the purpose of efficiently utilising superheated steam of valve-distributing gears, effected merely by changing the driving-cylinder, the distribution being controlled by the rod of the slide (maintained in its original position) converted into distributing-rod, this rod being provided with toggle-joints so as to obviate all changes in the other external members of the distributing gear. (2.) A cylinder for superheated steam locomotives and valve-distributing gear, characterized by a single valve-chest cast upon the cylinder and extending throughout its entire length, the said box arranged in such a manner that its walls and the conduits through which the live steam circulates are perfectly isolated from the casing of the driving-cylinder and that all the valves rise independently of the distributing mechanism when an increase of pressure takes place within the cylinder. (3.) The application of the device characterized above to compound cylinders. (4.) The cover for the distributing-chest, characterized by a long passage with transverse tubes enclosing the valves and closed by plugs, serving to protect these parts from external influences whilst at the same time enabling them to be readily inspected. (5.) The arrangement rendering the application of connecting-rod reversing gear for locomotives unaffected by the yielding or spring suspension of the driving-wheel, characterized by a bar or equivalent part forming a rigid connection between the driving-wheel axle and the point of articulation of a distributing-gear lever, the position of which adjustable.

(Specification, 6s. ; drawing, 1s.)

No. 20027.—13th September, 1905.—HENRY R. WORTHINGTON, a corporation organized and existing under the laws of the State of New Jersey, and having their principal place of business at 114, Liberty Street, New York, United States of America (assignees of Frederick Ray, of East Orange, State of New Jersey aforesaid, Mechanical Engineer). Improvements in centrifugal and similar pumps.

Claims.—(1.) In a centrifugal or similar pump of that class having impellers with suction-openings at each side, a