| | Book | Requires cookie* | | 1 | Title: | Powell leverage cycle
| | | | Creator: | Powell, Alvah L. | | | | Publication: | Press of the Sudwarth Company, Washington, DC,1922. | | | | Notes: | Includes index. "This is the first and is the memorial edition of the Powell leverage cycle, and is limited to two thousand copies, of which this is number 719". "A system that doubles the power of any existing engine, causing three cylinders of a six cylinder engine with the Powell leverage incorporated to give as much power as the same six cylinders would give without the incorporation of the leverage"--Title page. | | | | Call #: | TJ250 .P882 1922 | | | | Extent: | 152 pages : illustrations, portraits, diagrams ; 28 cm | | | | Subjects: | Engines
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| Book | Requires cookie* | | 2 | Title: | A short history of mechanical traction and travel
| | | | Creator: | Kidner, R. W. (Roger Wakely), 1904- | | | | Publication: | F. Clymer, Los Angeles,c1949. | | | | Notes: | Cover title: History of motorized vehicles; mechanical traction and travel, 1769 to 1946. Includes bibliographies. | | | | Call #: | HE151 K46 | | | | Extent: | 160 p. illus. 22 cm. | | | | Subjects: | Transportation -- History | Engines | Motors
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