Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 319
Fig. 123. Tower Drag-Scraper Excavator. stationary, they slide on other cables stretched parallel to theditch and fastened to deadmen, thus giving stability to the tower,while allowing it to move parallel to the ditch; the scraper … Fig. 124. Bucket Used with TowerDrag-Scraper Excavator. bucket in which the earth is moved; and cables for operatingthe bucket. The machine is built upon a platform and is movedon rollers by winding a cable fastened at one end to a deadman. * Abstracted from Engineering News. EXCAVATORS 315 A more…
Contractors' operations · Building
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