CATALOG OF THE AUTOMOBILE COLLECTION 45 



by a lever adjacent to the hand-brake lever. The driving sprockets of 

 the chain drive are on the jackshafts, or output shafts, of the differ- 

 ential. These also carry brake drums, with external contracting bands 

 controlled by the brake pedal. A multiple disk clutch is incorporated 

 in the flywheel and is controlled by a pedal to the left of the brake 

 pedal. 



Final drive is by double chain, one to each rear wheel. The front 

 sprockets have 25 and the rear sprockets 40 teeth. The Simplex was 

 one of the last American makes to use chain drive. 



The body, made by Holbrook of New York, is of the bucket-seat 

 speedster type and is painted red with black striping. It was one of 

 the few American cars of its date still using right-hand drive. 



Behind the two individual bucket seats is a 13-gallon, cylindrical 

 oil tank 12 inches in diameter and 27 inches wide, equipped with a 

 quick-opening, racing-type filler cap. Behind the oil tank is a 40- 

 gallon, cylindrical gasoline tank 21 inches in diameter. It is also 27 

 inches wide and is equipped with a similar filler cap. Pressure in the 

 two tanks forced gasoline to the carburetor, and oil to the oil tank 

 under the hood. Pressure of about 2 pounds per square inch was 

 maintained in the two tanks by the exhaust pressure of the engine 

 passed to the tanks through a Lunkenheimer filter and pressure regu- 

 lator. When the engine was at rest pressure could be raised in the 

 tanks by a hand pump. A gauge at the hand pump indicated the 

 pressure at all times. Valves on the tanks allowed the driver to shut 

 off the pressure if desired. 



The original wooden-spoked artillery wheels have been cut down to 

 accommodate 23-inch demountable rims equipped with 33-by-5-inch 

 straight side tires. Mounted upright behind the gasoline tank are 

 three spare rims equipped with tires. One of the original rims, 

 equipped with a 34-by-5-inch clincher tire, is also in the collection. 



The car is equipped with a Mayo honeycomb radiator, protected 

 by a stone guard on the front. The spokes of the flywheel are shaped 

 to act as a fan behind the engine. A Juhasz carburetor, with a barrel- 

 valve throttle, has replaced the original carburetor. Either a foot 

 accelerator or a lever on the quadrant on the steering wheel can 

 be used to control the throttle. Also on the quadrant is a lever to ad- 

 vance or retard the ignition. 



Acetylene headlights, Dietz combination electric-kerosene side 

 lights, and a combination taillight are provided. On the left running 

 board is a tool box that may have contained at one time an acetylene 

 tank, as no tank is now on the car. On the right running board is a 

 battery box. A muffler cut-out pedal is located between the brake and 

 clutch pedals, and there is a starter button in the center of the floor- 



