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

WITH INDUCTION ATOMIZERS. 51 mixture is thence drawn along the passage v3 to the annular space round the neck of the con-divergent mixing nozzle c, in which a pulsator plug t automatically regulates the admixture of extra air entering by the pipe a; this air supplied cold, excepting in very small engines, then combines with the rich vaporized mixture in the space m leading to the hollow plug throttle h, the supply to the engine through the pipe n, being deter- mined by the degree of opening of the slot-ways in the throttle relatively to those in the liner which is con- trolled by a powerful shaft governor through the rod g against the pull of either a spring or. as shown, of a counterpoise g1. The air required for atomizing the spray is first heated by the jacket z, and then drawn along the passage z1 to the hollow feed regulator r1. The engine exhaust enters the vaporizer at x1 and leaves at ,i;2, whence, as in the case of a launch or yacht engine, it is conducted, after first passing through a cooling chamber into which the circulating water from the cylinders is injected, down to a long perforated pipe laid alongside the hul! of the boat just ahove the keel, which is a method that serves as a very effectual deodorizer and silencer, and contrary to expectation causes but little back pressure-—not exceeding 2 to 3 Ibs. .For starting, the vaporizer can be either heated by a burner placecl under the flue s, or by a preliminary run on petrol, the former method, however, was at this time usually preferred on a yacht where a paraffin blow lamp is in continual service for culinary and other purposes, and time is of minor importance to safety. This form of vaporizer with ordinary grades of paraffin requires cleaning out after a total run of 500 to 700 hours,