28 BULLETIN 198, UNITED STATES NATIONAL MUSEUM 



front of the engine above the air pump. A shut-off valve is placed 

 between the reservoir and the oiler. Each unit of the oiler is equipped 

 with a sight glass and a metering adjustment. The oil dripped by 

 gravity to the camshaft and engine bearings, to the timing gears, to 

 the cylinder walls, and to the bearing surfaces of the air pump. 



To the left of the air pump is a large, hard-rubber, low-tension igni- 

 tion timer, driven from within the timing-gear cover. The timer can 

 be advanced and retarded by means of a lever placed near the steering 

 column and within reach of the driver. It is not known now where the 

 coils and battery were located. A threaded spark-plug hole is pro- 

 vided in the top of each cylinder, above the center of each piston. 



Also driven from within the timing gear cover is the centrifugal 

 water pump attached to the left side of the crankcase. The dis- 

 charge opening of the pump leads into the left section of the water 

 jacket of the engine. The cooling water passed from the top of the 

 right section of the water jacket to a water tank secured to the right 

 side of the engine behind the oil reservoir, then to the upper right 

 portion of the radiator, and from the lower left of the radiator back 

 to the pump. The water tank has an overflow pipe and a filler open- 

 ing for the entire water system. The radiator, placed low at the 

 extreme front of the car, consists of 54 horizontal tubes arranged across 

 the front, six rows deep and nine rows high, each tube carrying dozens 

 of cooling disks pressed into place. The adjacent ends of the tubes 

 are connected by cast aluminum header plates on each side of the 

 radiator. As each plate incorporates diversion channels, the flow 

 of water from side to side was controlled. The water tank is formed 

 of sheet copper with soldered seams. 



A shaft for a starting crank extends over the right side of the radi- 

 ator. A gear is fitted to the rear end of the shaft in proximity to a 

 similar gear secured to the extension of the crankshaft, directly behind 

 the air pump. A large idler gear, normally out of engagement with 

 these two gears, is mounted loosely on a short shaft so that when 

 moved rearward it will engage them, allowing the engine to be cranked. 

 The linkage controlling the motion of the idler gear is missing. The 

 starting crank is 18 inches long, with a left-hand ratchet incorporated 

 in the shaft end. This form of ratchet and the arrangement of the 

 rear-axle gears indicate that the engine ran in a counterclockwise 

 direction, rather than in the usual clockwise manner as viewed from 

 the front. 



The frame of the car consists of two wooden rails 2 inches thick and 

 31/2 inches high, rigidly positioned by the four engine arms and the 

 four arms of the transmission. One wooden cross member is placed 

 at the rear of the frame. 



The transmission housing, its integral supporting arms, and its 

 cover plate are of aluminum. The transmission, located in the center 



