CATALOGUE OF THE MECHANICAL. ENGINEERING COLLECTION. HI 



suspeiTsion. The power transmission is of the selective type, there 

 being four forward speeds and one reverse. The transmission-gear 

 housing is suspended from the main frame at three points, the 

 power from the engine delivered to the transmission through a 

 fabric-disk universal joint. Power is delivered to the rear wheels 

 from the transmission through a tubular drive shaft equipped with 

 universal joints at either end. 



The general dimensions of the truck are as follows: Length of 

 wheel base, 156 inches; length over all from front of bumper to end 

 of frame, 259 inches; width over all to outside of hub caps, front 

 wheels, 76^ inches ; width over all to outside of hub caps, rear wheels, 

 81:1 inches ; length of frame, back of cab, 176 inches ; length of body, 

 16 feet; width of body, 6 feet; height of side racks, 40 inches; 

 capacity, 20,000 pounds total— chassis, body, and load; wheel tread. 



FIG. 53. AUTOMOBILE TKUCK, 1921. 



63 inches on front wheels and 65 inches on rear wheels; tires, 36 

 inches in diameter. • 



This type of truck is extensively used in all lines of business 

 which have loads of variable bulk, such as general hauling, building 

 supplies, and wholesalers' wares. Cat. No. 307,255 IJ.S.N.M. 



Working Model of Automobile Truck with Tilting Body, 1921. (Scale 

 one-fourth actual size.) Made and Presented by The Autocar Co. 



The general specifications of this truck are almost identical to 

 those of the truck just described except for the differences caused by 

 the use of a shorter wheel base for the present truck. Its particular 

 mechanical feature is the means for tilting the body, which may be 

 pitched at an angle of 40 degrees. 



The power is obtained from the transmission gears through a 

 worm drive, the control being a hand lever mounted on the left- 

 hand side of the chassis. A sliding gear, operated hj the control 

 lever, meshes with an idler gear and with a driving gear in the trans- 



