Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 309
e boom,are practicable. The entire machine swings on a circular turn-table. The bucket is filled by pulling it directly toward thecenter of the machine by means of a cable so there is no strainon the boom except that due to its own weight and the weightof the bucket and its load. As a result the… … Fig. 118. DragScraper Excavator Used on New York Barge Canal. used on the New York Barge Canal, has an 85 ft. boom, a reachof 96 feet and weighs 147 tons. A 2 yd. dipper is used which inoperation is usually filled full and sometimes carried 4 yds at aload. The engine is of 15 H. P. capacity and the…
Contractors' operations · Building
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