Motor Road Transport For Commercial Purposes
(Liquid Fuel, Steam, Electricity)

166 MOTOR ROAD TRANSPORT carburettor that would allow a motor vehicle engine to run on the heavier kind of liquid fuel, and the writer examined and tested on the road several makes of paraffin carburettors. Most of them died a natural death, though some were undoubtedly good in idea to a limited extent. The trouble in most cases was that little real flexi- bility was obtainable—although paraffin as a fuel is extremely sensitive—owing to the charge not being sufficiently and correctly mixed for varying loads and speeds, and under any sudden change of condition combustion was not complete. Another grave objec- tion was that these carburettors were anything but self-regulating. A Successful New Invention. One of the most interesting and progressive inven- tions for the improvemen t of carburation hitherto produced was examined by the author not very long ago, and claimed to be a carburettor designed to run any car on paraffin; while, by the fractional movement of one small externally placed screw, different grades of petrol, benzol, and even alcohol could be used, the adjustments of weight, of fuel and air, and degrees of temperature being entirely automatic. The device is the outcome of twenty-five years of research, and practical test by the inventor, and in its latest form is simple and compact, the carburettor taking up no more room than does the ordinary type of petrol carburettor. The heating apparatus merely consists of tubes surrounded by the exhaust gas, the air being drawn through these, and an ordinary type of ball and spring float chamber is used. The fuel is fed from the float chamber through an automatically-controlled passage, to a jet nozzle