Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 343
are two outline views of a steam shovel; the former repre-sents a dumping and the latter a digging position. A is the ^-frame, B the boom,and D the dipper. The pin P (axis perpendicular to the paper) is seated on the upperhalf of a fifth wheel which permits swinging of the boom about the vertical… … •i/f|<-36*l*--#6-* Fig. 26 Fig. 27 Many of the parts of a shovel are most severely stressed when the dipper is en-countering an unyielding obstruction in the bank. We indicate how some of thesestresses may be determined and then ask the student to determine others. The actual resistance of the…
Mechanics
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