CATALOG OF THE AUTOMOBILE COLLECTION 23 



material. The successive horizontal 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 at some 

 point in the lower coils, 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 cylindrical 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 pres- 

 sure 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 small amount of gasoline 

 was run into a drip cup and was then lighted with a match to heat 

 the pilot light. The flame of this pilot light heated the vaporizing 

 coil and lighted the main burner. The pilot light was kept burning 

 while the car was in use. 



The throttle was operated by a handle on a verticle shaft supported 

 on the right side of the body to the driver's right. To open the throttle 

 the handle was moved toward the rear. 



The running gear consists of two highly arched axles, front and 

 rear, of heavy seamless tubing, connected on each side of the car by 

 two fore and aft reach rods of hickory. The front wheels, which 

 are wire-spoked and carry 30-by-3i/2-inch clincher tires, turn on 

 swiveled steering knuckles connected together by a tie rod. The left 

 knuckle is connected to the steering shaft, which is pivoted on the body 

 and which is steered by a tiller. The rear wheels are identical to the 

 front ones. The tread of the car is 52 inches and the wheel base is 

 72 inches. 



The driving axle at the rear is divided, an enclosed differential 

 unit connecting the two halves. A chain connects the crankshaft 



