Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 230
845, Section through reflector and level. NAVIGATION AND ROADS. 2 19 … 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…
Mechanical movements
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