Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 286
... I ISl … HANDBOOK OF CONSTRUCTION PLANT ELEVATING GRADERS These machines are generally drawn by twelve horses (eightin front and four hitched to a push cart behind) or more, or bya traction engine. The machine consists primarily of a plowwhich casts a furrow on a transversely moving belt that elevatesthe…
Contractors' operations · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
