The book Excavating Machinery was written by author Allen Boyer Mcdaniel Here you can read free online of Excavating Machinery book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Excavating Machinery a good or bad book?
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Contg. Plan Diagram of Double Tower Excavator. Figure 69. section, there being less than ij cu. Yd. Of excavation per lineal foot outside of the required lines. The canal excavated had a bottom width of 26 ft. And side slopes of 2 to i. The average depth was 27 J ft. The canal lay in nearly a level plain and the material excavated was clay. This excavator was designed by the late J. T. Fanning of Chicago, and consisted principally of two towers and two buckets. Fig. 69 is a diagram illustrating... the principles of construction and operation. It will be shown by the plan that the two inclined booms are so con- structed that a straight line from the apex of either tower to the point of the opposite boom, clears the side of the tower. This allows the bucket to clear the tower and empty directly on the adjacent spoil bank. As will be seen from Fig. 69, there are two buckets, working in opposite directions and each excavating its half of the canal prism. A double-drum hoisting engine was placed on the side of the plat- form of each tower.
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