The engine is of the 2-cylinder, double-acting type with 

 link reversing gear. Ball bearings are provided for the 

 main journals and eccentrics. The slides and cross heads 

 are hardened and ground and were lubricated from auto- 

 matic oil cups. The cylinders were lubricated from a 

 specially designed cup which held enough oil for about 10 

 hours of operation. The exhaust steam was muffled so as 

 to be practically noiseless. No condenser was used, 

 although this feature is found on the later White steamers. 



The semiflash boiler consists of spiral coils of seamless 

 tubing placed one above another and surrounded by a 

 casing of heat-insulating material. The successive hori- 

 zontal coils of tubing are connected by pipes passing up 

 and over the top coil so that the water entering at the top 

 cannot go through the coils by gravity but is held in place 

 entirely subject to the action of the pump. The water 

 entered and filled the upper coils, while the steam was 

 formed in the lower coils and passed out of the lowest coil 

 next to the fire. The upper coils acted as water heaters, 

 and the water was converted into steam in the lower coils 

 at a point which varied with the amount of steam being 

 used by the engine. The steam was superheated in the 

 lowest coil, resulting in higher economy of operation and 

 practically invisible exhaust. 



There was no fixed water level to be maintained and 

 consequently no water gauge to be watched. The water 

 supply was automatically controlled by the steam pressure, 

 which avoided hand regulation of the fuel. An auxiliary 

 hand water pump, located by the driver's right leg, was 

 provided for use in starting or to replace the power water 

 pump if the latter became inoperative. The water was 

 carried in a 20-gallon copper tank back of and partially 

 surrounding the casing of the boiler. 



Gasoline was used as a fuel and was carried in a cylin- 

 drical tank of about 8 gallons capacity located under the 

 footboard. It was forced through the vaporizing coil to 

 the main burner by means of air pressure pumped up by 

 hand. The air pump, located by the driver's left leg, 

 could be operated from the seat. A 40-pound air-pressure 

 gauge on the dash indicated the amount of pressure in the 

 fuel tank. The burner was started with a pilot light. A 



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