The Vaporizing Of Paraffin for High-Speed Motors
(Electric Ignition Type)

ROAD C AR AND TRACTOR MOTORS. 111 copper pipe, but may be arranged in the form of a coil, and in either case is located within the exhaust manifold x1; the vaporized mixture is then drawn along the lagged pipe v2 to a mixing chamber under the regulator r of the carburettor ; here the rich mixture is diluted with supplementary air admitted by the rotary shutter- valve a1 in direct proportion to the extent to which the main throttlé li is opened, these two valves being pro- portioned to this end and linked together. The mixture regulator r is weighted, and while the motor is running dead slow rests on its seat, and the vaporized mixture is then admitted to the upper side of the regu- lator through a series of small holes without admixture with supplementary air ; but on further opening of the throttlé and speeding-up of the motor, the rotary air- shutter a1 is proportionately opened, thus causing the regulator r to lift by suction effect, and in so doing carry the series of slots in the skirt of the regulator up to a position above the seat. Simultaneously with this, the taper needle j is raised, and thus increases the thickness of the annular fuel jet in a proportionale clegree. A small piunger is fitted above the automatic regulator in order to damp out oscillation due to jolting of the car, or to sudden change in throttlé opening ; the stem seen to project above the regulator bonnet serves the purpose of ascertaining the free movement of the mixture regu- lator at any time, as, for instance, before starting up. It would appear that this pressure atomizer vaporizer is capable of making a good performance, judging from a certificated 1,000-mile trial run on a four-cylinder touring car having a gross running weight of 3,800 Ibs. During this run on an average road surface and succession of