Patents Completed.
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Complete specifications of the following patents will be sent to any address in the United Kingdom by the Sale Branch, Patent Office, Holborn, W.C., upon receipt of eightpence per copy.
Supporting Detachable Rims.
The Dunlop Pneumatic Tire Co., Ltd-, and F. J. Keegan.—No. 9250, dated 13th April, 1911.—This invention relates to de vices for supporting a detachable wheelrim in a suitable position for manipulating the tire thereon. It is particularly adapted for use with the detachable rim described in Patent No. 18,075 of 1907. Three brackets or clips are adapted to be secured to the side of the wheel-rim, or in the case mentioned, to the expansible flange-ring by clamping bolts and wing-nuts on each bracket. A portion of each bracket extends outwardly at right-angles to the flange-ring and constitutes the arm which supports the detachable rim. The invention may, however, be applied to any kind of detachable rim.
Means for Relieving Compression.
F. Guest —No. 22,896, dated 17th October, 1911.—This specification describes a compression-relieving device of the type in which a valve working between two Beatings travels between them and allows the escape of gas and consequent diminution of compression. A spring holds the valve down on the lower seating, but releases it when a certain pressure is attained. When it, is required to close the valve for the normal running of the en gine, it is held against its upper seat by means of a disc engaging tho valve rod, provided on its under side with cam surfaces engaging the socket in which the valve-seat is formed. On rotating the disc, it is lifted by the cams, and in so doing causes the valve to be held tight on its upper seat. The inventor claims that the manual exertion necessary for starting an engine fitted with these relief valves is very much less than that usually demanded when starting on full compression. An Accessible Gearbox.
J. H. Smith and C. Nuttall.—No. 23,536, dated 25th October, 1911.—This specification describes improvements in gearboxes of motor-driven vehicles, whereby the gearbox, complete with the gear, may be removed easily and quickly when required, and can then be as easily and quickly replaced in general alignment with the other parts. A shell or casing is fixed tigidly and permanently in lino with the engine and clutch mechanism. This shell is bored internally to a particular diameter. A gearbox is turned externally to a corresponding diameter, so that the complete gear mechanism and box can be slid into the casing and secured thereto. Since the outer casing is never removed or disturbed, once the mechanism has beea aligned it can always be correctly replaced merely by securing it in this casing.
A Mathematical Carburetter.
E. T. Johnson, W. H. Glaser and H. R. Lloyd.—No. 8926, dated 10th April, 1911. Cognate application No. 15,816, dated 7th July, 1911.—This specification describes a carburetter of the type in which a suction pipe of varying diameter is used, and the difference in pressure at different sections of the pipe utilized for the purpose of controlling the supply of fuel. A mathematical exposition of the method of design is given at some length, and a particular construction in accordance with the theory outlined is described and illustrated. Steering Motor Ploughs.
Robert Stock.—No. 28,786 of 1911, dated under International Convention 18th January, 1911.—Patent of Addition to No. 8960 of 1910.—This invention relates to the steering wheels of the plough described in previous patent No. 8960 of 1910, wherein a single vertical steering wheel is provided with a knife-like flange on its surface which engages with the unploughed ground, and so exercises the necessary lateral, pressure for steering. The present invention consists in providing scrapers which remove any earth adhering to the rim or cutting flange of the wheel, as this seriously impairs the control over the steering.
A Combined Gearbox and Differential.
F. Lamplough and W. R. Buckingham. —No. 10,347, dated 28th April, 1911.— This invention has for its object the elimination of the ordinary gearbox and the reduction of the speed of rotation of the gearshaft. The differential chamber is enlarged, and a cross or gearshaft arranged therein carrying a large crownwheel driven by a bevel-pinion on the driving-shaft. On each side of this wheel toothed gears are mounted on the cross shaft along which they can slide, and these toothed gears can be made to mesh with similar gears on the differential casing. A reverse drive is obtained by inserting an idle pinion between one of these gears on the gearshaft and its corresponding wheel on the differential casing. Suitable ball and thrust bear. ings are provided where necessary, and the gear changing is effected by means of bell-crank levers, which are operated by slides in the casing for the driving shaft.