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

100 VAPORIZING OF PARAFFIN. fitted to a Rover four-cylinder 15 H.P. car with appar- ently satisfactory results. According to this vaporizing method, the starting and running fuels are supplied to separate float cisterns arranged each to feed a single spray nozzle j located in the inclined choke-tube n, forming part of a three-way change-over valve s, to which tubes the admission of atomizing air is regulated by shutter flaps a. The carburetted air is thence drawn along the pipe v and through a vaporizing tube v1, located within the exhaust manifold, and then along a lagged pipe v2 round to the other side of the motor, to an auto- matic mixer cömprising an exhaust jacketed chamber containing a'wing-throttle h, a fixed liner /, and a sliding regulator r. The vaporized mixture of spray and atomizing air led in by the pipe v2 is mixed with cold air from the pipe a1 entering at opposite sides, through series of holes p, p1 in the liner and regulator. The action of this mixer is such that when the motor is running with the throttle nearly closed, the regulator r, which is weighted, then rests on the bottom cover, so that all but the bottom row of holes p, p1 are closed ; but with a further opening of the throttle and consequent speeding-up of the motor, the regulator r is drawn up until, at full throttle, each row of holes in the regulator will register with a corre- sponding series in the liner; thus air and vaporized mixture is automatically proportioned for varying running conditions. The diiuted mixture passes direct from the throttle to the manifold m communicating with the font admission valves in the ordinary way, but in order to damp-out excessive pulsation of the regulator, there is an adjustable air vent d on the bottom cover. In this carb urettor vaporizer there is no