1736
THE NEW ZEALAND GAZETTE.
[No. 42

No. 29437.—26th April, 1911.—W. R. SYKES INTERLOCKING SIGNAL COMPANY, LIMITED, WILLIAM ROBERT SYKES, Engineer, REUBEN WILLIAM TARRANT, Engineer, all of 26 Voltaire Road, Clapham, London S.W., England, and MCKENZIE AND HOLLAND, LIMITED, of 58 Victoria Street, Westminster, London S.W., and Melbourne, Victoria, Australia, Railway-signal Engineers. Improvements in railway-signalling.

Extract from Specification.—According to the present invention, the impulses employed are not all of the same polarity, and all may originate by the closure of a circuit at the controlling end of the block-section, or at the corresponding end of the wire which serves to convey the releasing current or currents—i.e., at the end of said section or wire which is remote from that whereat the normally locked element already referred to is situated; whilst means are provided for enabling the series of impulses (some positive and some negative) to be automatically transmitted (at the controlled end of the section or wire, and in predetermined order) through the windings of electrically operated devices, some or all of which may have polarized cores or polarized armatures; the arrangement being such that the movements of the several armatures (or other instrumentalities controlled by the respective electrically operated devices), when performed in predetermined order, have for effect to bring about the required release of the normally locked element.

The transmission of the series of electrical impulses may be made dependent upon the initial storing-up of potential energy in the apparatus at the controlling end of the block-section or wire, the storage operation being a result of the operation (whether personal, on the part of the controlling operator, or automatic, on the part of a train, signal, or other mechanical initiating agent) whereby release of the normally locked element is authorized, and the actual transmission of the impulses in predetermined order being automatically brought about by the subsequent expenditure of the stored-up energy in producing movement of an electrical distributing-device. Thus, for example, the pushing-in of a releasing-plunger by the signalman at the controlling end of a block-section, or the passage of a train over a treadle at some point on the line, or, again, the movement of a signal, may be utilized to cause a weight to be raised or a spring to be put under stress in the apparatus at the controlling end of the block-section or wire, the subsequent descent of the weight or recoil of the spring serving to actuate a distributor-switch whereby to transmit the series of impulses in predetermined order. Or the depression of a “fouling-bar” by a train, or the lowering of a semaphore signal, may serve a like purpose, the transmission of the impulses being brought about under the control of the fouling-bar or semaphore-arm as either of the latter resumes its normal position. Or a series of fouling-bars or treadles, actuated in succession by a train, might control the transmission of a corresponding series of impulses.

Again, the oscillations produced in a body of mercury by the vibrations due to, say, the passage of a train over a treadle (as in the well-known Sykes treadle-operated mercurial switch) may be utilized for the successive transmission of the impulses of the series; the washing of the waves of mercury, alternately, over normally bared contacts presented at opposite ends of a chamber which contains the body of mercury, serving to complete in succession alternative circuits whereof said normally bared contacts respectively represent one member.

Moreover, some form of the well-known track-circuit system may be employed in order to effect the transmission of the requisite impulses. It will furthermore be evident that any of the various means may be used in combination with one another, whilst in any case such means may be made to serve only for the purpose of preparing the way (mechanically or electrically, or both) for the ultimate transmission of the final releasing impulse or impulses under the control of, say, the operator or other agency at the controlling end of the block-section or wire.

The invention, whilst adapted to afford the essential elements in an improved method of control capable of being used in connection with many forms of the block-telegraph system, has been designed with a view more especially to being applied in connection with the well-known Sykes “lock-and-block” system, and for the sake of clearness will be described with particular reference to such application.

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

(Specification, £2 5s. 9d.)

No. 29439.—30th April, 1910.†—ISAAC SHONE, of 47 Victoria Street, Westminster, London S.W., England, Civil Engineer. Improvements in and connected with sewerage systems.

Claims.—(1.) A sewerage system wherein a normally continuous supply of fresh atmospheric air is introduced into the soil-pipes or other conduits at or near the source of sewage or water-supply to them (such as through the ventilating-pipes connected with the soil-pipes of a house or building), and is caused to pass, by means of a rarefaction or minus pressure artificially maintained within the sewer into which the house or like drains discharge, down through these conduits, and through the drains which lead to the sewer, having upon them interceptors or traps or ejector apparatus; the air being conducted at these points on the drains at which said apparatus or appliances exist, from one side to the other of them, by air by-pass conduits, so that the said conduits, pipes, drains, constitute a closed system, and they and the sewers are throughout practically continuously flushed with fresh air, substantially as described. (2.) A sewerage system wherein a continuous supply of fresh atmospheric air is introduced into, and caused to pass normally down through, the soil-pipes and other conduits; and the drains have interceptors or traps or ejector apparatus on them which lead to the sewer; and the flow of air in the opposite direction is prevented wholly or largely by reflux valves in the air-conduits, connecting the house or like side of the drainage system with the sewer side, substantially as set forth.

[NOTE.—Here follow five other claims.]

(Specification, £1 9s.)

No. 29440.—26th April, 1911.—WILLIAM HARDIE CHEYNE, of Brent Side Engineering Works, Hawley’s Wharf, Brentford, Middlesex, England, Engineer, and GEORGE RICHMOND MEWBURN, of Nos. 5 and 6 Clement’s Inn, Strand, London, England, Solicitor. Improvements in or connected with rapid-action steam-hammers, more especially intended for use with tools for scaling boiler-tubes.

Claims.—(1.) In a steam-hammer, a cylinder or case, a steam-cylinder within the case, a piston within the steam-cylinder, said piston having a reduced area on its outer face or side, means for constantly supplying steam to said outer face, a rod fixed with the piston and working in the bore of the casing, a reduced part to the piston-rod forming an annular chamber, a set of ports (called inner ports) at the inner end of the steam-cylinder, corresponding ports (called outer ports) near to the outer end of the steam-cylinder adapted to be closed by the piston at or near the extremity of its outward stroke and opened to the steam-supply by the piston at or near the extremity of its inward stroke, ways or channels connecting said ports, a set of ports in the annular chamber connected by conduits with the ports of the steam-cylinder, exhaust-ports from the annular chamber, and a valvular part of the piston-rod adapted to close said exhaust-ports before, in the inward traverse of the piston, the outer ports of the steam-cylinder are opened and to keep them closed until near the extremity of the outward stroke of the piston, substantially as shown and described, and for the purpose stated.

[NOTE.—Here follow four other claims.]

(Specification, 9s. 6d.)

Copies of drawings may be obtained at the uniform price of 1s. each. In exceptional cases this price may be increased at the discretion of the Office.

An asterisk (*) denotes the complete specification of an invention for which a provisional specification has been already lodged. A dagger (†) denotes a prior date under the International and Intercolonial Arrangements.

NOTE.—The cost of copying the specification has been inserted after the notice of each application. An order for a copy or copies should be accompanied by a post-office order or postal note for the cost of copying.

The date of acceptance of each application is given after the number.

Extracts from the drawings accompanying the foregoing complete specifications appear at the end of this Gazette.

J. C. LEWIS,
Registrar.