Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 314
y placed, passing through sheavessecured to the platform and around the niggerhead. The trackis also moved ahead by the same means, the deadman beingdispensed with and line passing around the end of a boom whichis a part of the tower. The line around the niggerhead is op-erated by the fireman. The… … j< -//V- ^-7rac(^ fii///er/i>ra/-f//jii>r£ Fig. 121. Details of Tower for Field Tower Excavator. 310 EXCAVATORS 311 Scraper Bucket. The distinctive feature of the excavationIs the scraper bucket which is shown by Fig.122. Tliis bucket hasa capacity of 48 cu. ft. level full, but in ordinary…
Contractors' operations · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
