Bulletin - United States National Museum (1957) (20481403256)

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Title: Bulletin - United States National Museum
Identifier: bulletinunitedst2131957unit (find matches)
Year: 1877 (1870s)
Authors: United States National Museum; Smithsonian Institution; United States. Dept. of the Interior
Subjects: Science
Publisher: Washington : Smithsonian Institution Press, (etc. ); for sale by the Supt. of Docs. , U. S. Govt Print. Off.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image:
AUTOCAR GASOLINE TRUCKS, 1921 Gift of the Autocar Co. in 1 922 (USNM 307255 and 307256) These one-quarter-size models represent the type XXVI-B (fig. 99) and XXVI-Y (fig. 100) Autocar trucks of 1921. Except for the wheelbase and the type of body, the two types are identical. The former has a 156-inch wheelbase and a unit construction rack body, while the lat- ter has a 120-inch wheelbase and a rotary dump body with power hoist. The wheels of the larger model and the dumping action of the dump body truck were originally operated by con- cealed electric motors. Otherwise the models are inopera- tive. The frame of the full-sized vehicle is made of pressed steel of channel section and is fitted with cross members and braces. All four springs are of the semielliptic type. The tread is 63 inches. The front axle is drop-forged steel of I-beam section. The front wheels are mounted on adjust- able, tapered, roller bearings. The front tires, of solid rubber, are 34 by 5 inches.
Text Appearing After Image:
Figure 99. — Model of 1921 Autocar truck, type XXVI-B. This quarter-scale model represents a vehicle with a 156-inch wheelbase. 141

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