Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 226
846. ROAD MACHINE,for scraping and levellingcommon roads. 847. REVERSIBLE ROADROLLER.—The tongue is at-tached to the frame that carriesthe drivers seat, and is bal-anced by the weight on therear arm. By unlocking thecatch the horses wheel aroundthe roller with the tongue andseat frame, and the… … 848. ROAD ROLLER.—Steam- driven. One of the heavy classnow improving our roads.
Mechanical movements
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