Patents Completed.
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Renault Starting Gear. Wolseley Tire-fitting Appliances. Multiple Series-gap Sparking Plug. An Improved Carburetter.
Copies ot complete specifications of the patents published on this page can be obtained from the Sales Branch, Patent Office, Holborn, W.C., at the cost of sixpence for each specification.
L. RENAULT, No. 23,070, 1914, dated under International Convention, 27th November, 1915.—The shaft of the auxiliary motor is arranged parallel to the engine-shaft, and a pinion with helical teeth is free to slide on the motor-shaft. The _Hs wheel of the engine carries similar helical teeth, and the two sets are arranged in such a manner that when the motor is driving the engine, the pressure on the teeth maintains them in engaA-ement, but when the engine fires and tends to overrun the auxiliary motor, the pressure on the teeth causes them automatically to become disengaged by sliding the pillion on its shaft.
A spring-lock holds the pinion in either its engaging or disengaging position, and the bracket in which this lock is formed may be interconnected with the starting switch for the motor so as to stop the latter.
A. WATSON and J. DUNCAN, No. 12,193, dated 1fith May, 1914.—The fuel is supplied from an ordinary float-feed chamber to a central well, through which it passes to a valve-controlled outlet at the top. The valve is formed by tapered grooves on the spindle which carries the throttle-valve, the spindle being raised or lowered according to the throttleopening . required. The primary air is conducted by tubes surrounding the fuel-well from the main air-inlet to a point above the jet. The well and these tubes are enclosed in a jacket heated by the exhaust, and the main air passes upwards outside this jacket to a mushroom-shaped valve in the choke-tube. Some air is led in through the mushroom valve to mix with the rich mixture, while the remainder passes up.
In a modification, the primary air-tubes are each formed with a decreasing bore as a choke-tube, communicating with the valve-seating on the fuel-well at the point of smallest diameter.
.TITE WOLSELEY TOOL AND MOTOR CAR CO., LTD., and J. G. SwEENEY, No. 13,631, dated 5th June, 1914.—The accompanying drawings show an appliance that is used for putting tires on rims and also for springing a detachable flange
into place. The appliance consists of a hooked member which engages one side of the rim and has a lever pivoted at the other end. This lever has a slanting or concave portion which pushes the tire into place when the lever is swung upwards. It operates in the same way for inserting a split flange or ring to hold the tire. When mounting the tire, the part which has already been slid on to the rim is held in position by a short length of metal which is of similar section to the split flange. A fingerpiece is provided on it for convenience in handling, and this stop is fitted in the rim which receives the split flange, being slid roundas successive portions of the tire are forced into place.
T. McCLEmEeirs, No. 20,156, dated 25th September, 1914.— The object of this invention is to provide a plug in which a number of simultaneous or practically Simultaneous sparks are produced over a large area so that the ignition of the fuel is more rapid and greater power is developed on each working stroke. This result is obtained by forming a number of spark-gaps
in series with one another. The electrodes consist of T. headed pins in which the arms of each pin are brought close to the adjacent pin. As illustrated, two of these pins are used and the spark passes first from the central electrode to one pin, then by a gap to the second pin and then by another gap to earth. Three sparks are thus provided, but by increasing the number of pins, the number of sparks produced can be increased as required.