CATALOG OF THE AUTOMOBILE COLLECTION 31 



haust manifolds, the spent gases having been exhausted directly into 

 the open, beneath the blocks. The engine ran in a clockwise direction. 



Access plates are located over each of the eight throws of the 

 crankshaft, enabling ready inspection of the bearings. Each 4- 

 cylinder unit is equipped with five main bearings. 



A sheet-brass oil reservoir, with a shut-off valve, is secured above 

 the front cylinders. It delivered oil by gravity to a float-equipped, 

 constant-level oiler on each set of cylinders. Oil then flowed by 

 gravity from these two oilers to the ten main bearings, the eight 

 cylinder walls, the timing gears, and the air pump. 



Secured to the outside of the crankcase of the front engine is an 

 air pump operated by a rod connected to the skirt of the third piston. 

 When the engine was running, compressed air was supplied to the 

 pistons on the ends of the eight intake valves to control the amount 

 of their being drawn open by the engine suction. Two relief valves, 

 one a foot plunger, the other a hand valve, served to vary the pressure 

 as desired. The lower the pressure, the farther the intake valves 

 would be drawn open, and the faster the engine would run. 



An aluminum centrifugal water pump is secured beneath each 

 engine. Each is now in a damaged condition. The pumps are con- 

 nected by a shaft, and the front pump is driven by a shaft extending 

 back from the aluminum cover provided for the timing gears at the 

 front of the engine. The water jackets of the two blocks are formed 

 of sheet aluminum, while the water manifolds are aluminum castings. 

 A water tank, of sheet brass, is integral with the top water jacket of 

 the front cylinders. It contains the filler cap and an overflow pipe 

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

 front of the car, consists of 42 horizontal tubes arranged across the 

 front, six rows deep and seven rows high, each tube carrying dozens 

 of cooling disks. The adjacent ends of the tubes are connected by cast 

 aluminum header plates on each side of the radiator. The cooling 

 water passed from the top water jackets of the cylinders into the 

 water tank, then to the upper right portion of the radiator, and from 

 the lower left of the radiator back to the two pumps. The i)umps 

 discharged into the bottom water jackets of the cylinders. 



The low-tension ignition timer was advanced and retarded by a 

 small lever at the driver's seat, but a connecting link is now missing. 

 It is not known now where the battery was located, but the eight coils 

 were secured to the inside of the body above the rear crankcase. Only 

 four incomplete coils now remain in place. A threaded spark-plug 

 hole is provided in the center of each cylinder head. 



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

 31/2 inches high, rigidly secured by the two engines ; and of two wooden 

 cross members, one at the front and one at the rear. 



860272—50 1 



