Patents Completed.
Page 20
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Complete specifications of the following patents will be sent to any address in the United Kingdom upon receipt of eightpence per copy at the Sale Branch, Patent Office, Holborn, W.C.
PISTON VALVE.—The Wolseley Tool and Motor Car Co. Ltd. and A. A. Remington.—No, 13537, dated 4th June, 1910.—In this specification there is described the application of a piston valve to an internal-combustion engine. The cam on the half-speed shaft is so arranged that the valve stands substantially stationary in its mid-position; it then rapidly moves to its extreme position for the exhaust stroke, and next passes quickly across to the extreme position for the inlet stroke, after which it returns to the mid position for the compression and working strokes. The valve chamber extends above and below the inlet port of the cylinder, and is provided in the upper portion with the inlet port and in the lower portion with the exhaust port. It will be seen that this construction permits of ready lubrication. Another difficulty in the use of slide valves which is obviated is the passage of the mixture through a valve port having cross-bars which have been heated by the exhaust.
MOTOR RAILWAY CARRIAGE.— The Midland Railway Carriage and Wagon Co. Ltd. and J. S. Currall.—No. 15,884, dated 22nd July, 1910.—There is described and illustrated in this specification a petrol-driven carriage such as is used on railway systems for light and local traffic. To obviate the difficulty in transmitting the drive from an engine fixed in the carriage to the driving wheels on the bogey, a cab, separate from the carriage, is mounted direct on the fore part of the bogey, so that it partakes of all of the movements thereof. The engine, with the clutch and changespeed gear, is arranged in this cab, and a chain drive is used driving on to the front bogey wheels. A suitable flexible suspension is provided to support the gearing, and additional buffers are provided between the body of the carriage and the framework of the bogey.
SILENT CHAIN.—Richmond.—No. 14,329, dated 14th June, 1910.—The invention described in this specification relates to driving chains of the " silent " type. The pintle, upon which the series
of thin link elements is hinged, is provided with a longitudinal rib of segmental form which engages one series of the link elements. The sides of the rib converge towards the pintle, so that the latter cannot be drawn in towards the middle of the links and into the corresponding enlargement formed in the links on the other side.
FUEL NOZZLE. — Brooke. — No. 5,878, dated 8th Mardi, 1911.—This invention relates to fuel nozzles for internal-combustion engines, and it has for its object to provide an arrangement whereby all the parts that require frequent cleaning or renewal are readily accessible. The bracket fixed on the engine is provided with a socket; in this socket there is a sleeve having at one end the fine fuel nozzles ; inside this sleeve again is fitted the valve box controlling the supply. The setscrew on the right-hand side is screwed in to hold the various members in position. The removal of this one screw enables all the parts to be dismounted when necessary. There is also described an arrangement of auxiliary valve box secured to the main valve box by a separate readily. detachable clamp.
ROTARY VALVES.—De Dion Bouton.—No. 576, 1911, dated under International Convention 21st January, 1910. —This invention relates to internal-combustion engines with valves of the rotating sleeve type, and it has par ticular reference to an arrangement of sleeve valves and adjacent parts. The combustion chamber of each cylinder is reduced in size and is surrounded with a water jacket. A suitable port is provided extending through the water jacket: Surrounding the two combustion heads and controlling the port are two rotating sleeves; these fit on the outside of the water jacket and are provided at the lower ends with toothed flanges. A horizontal gearwheel on the right-hand side drives the near sleeve valve, and the latter drives the second sleeve valve. Surrounding the sleeves, is an outer casing which fits the sleeves and also fits against the wall of the water jacket above and below the sleeves. Suitable plates are provided for the open ends of the water spaces.
REMOVING VALVES. Austin.— No. 19,519, dated 20th August, 1910.—A simple tool is described in this specification which enables valves to be easily removed. A hook-shaped member passes through the pocket and bears on the head of the valve. Suspended from this member by an adjustable chain, is a lever which Is brought to bear on the washer at the bottom of the spring. On depressing the lever the spring is compressed while the valve is held on its seat from the upper end. This engages only one hand of the operator, the other hand is free to remove the key or feather. The hook member is so shaped that it bears upon the walls of the valve. pocket to steady it and prevent it from slipping.