40 BULLETIN 19 8, UNITED STATES NATIONAL MUSEUM 



drain cock in the bottom of the crankcase allowed the old oil to be 

 removed after it had accmnulated. 



The starting crank handle is placed on the right side of the body, 

 enabling the engine to be cranked by the driver while sitting in the car. 

 A sprocket on the shaft upon which the crank is mounted is connected 

 by a chain to a sprocket on the engine crankshaft. An overrunning 

 clutch is incorporated within the hub of the latter sprocket so that the 

 engine will not drive the crank handle once the engine has been 

 started. 



The 2-speed forward and 1-speed reverse transmission is of the 

 planetary type. The reverse and the low speed forward are operated 

 by band and drum clutches, and the high speed by a friction compres- 

 sion clutch. A single shaft carrying three eccentrics, with the three 

 throws in different directions, serves to actuate all three clutches, one 

 at a time, by tightening bands around the drums for the two lower 

 speeds, and through a bell crank moving in a direction longitudinal 

 to the main shaft for the high speed. A vertical extension of this 

 shaft is located to the right of the driver, to be operated by his right 

 hand, full forward position of the lever engaging the high-speed 

 clutch. 



A brake pedal is connected to an external contracting band on a 

 brake drum located on the transmission shaft between the low-speed 

 and reverse drums. 



A sprocket on the transmission, between the reverse drum and the 

 brake drum, is connected by chain to the differential unit on the rear 

 axle. Located on the differential unit is a brake drum. The band of 

 this brake is actuated by a hand lever adjacent to the gear shift and 

 spark levers. 



The rear-axle housing is tubular and is strengthened by a truss rod 

 running beneath it. The tubular front axle, likewise strengthened 

 with a truss rod, is equipped with pivoted steering spindles at each 

 end, and the two are connected by a tie rod. Between the steering-tiller 

 post and the arm to the center of the tie rod is a full-elliptic spring, 

 which turns as the tiller is turned and prevents road shock from reach- 

 ing the tiller. 



Wooden-spoked artillery wheels, mounting 28-by-3-inch clincher 

 tires, are used. The front wheels are supported on tapered roller 

 bearings, and the rear wheels are on straight roller bearings. Grease 

 cups provided lubrication for the rear wheel bearings. 



Long truss-shaped springs, one on each side, connect the front axle 

 to the rear-axle housing. The connection at the rear is adjustable to 

 take up slack in the driving chain. The rectangular frame is of 

 channel steel and is mounted upon the two springs. The wheel base 

 is 66 inches and the tread 55 inches. 



