Applied mechanics: an elementary general introduction to the theory of structures and machines (1884)
Cotterill, James H. (James Henry), 1836-1922 · London, Macmillan and co. · leaf 36
t and the pull on the stay AE are shown bythe diagram P corresponding to the supporting force at A in theprevious case. (/?.) In the pit crane, the post is prolonged below into a well andthe lower end revolves in a footstep, the upper bearing beingimmediately below B. In this instance the post has… … to H multiplied by the ratio of the length of the crane-post, BE, tothat of its prolongation below the ground. (y.) The upper end of the crane-post may revolve in a headpiece,which is supported by a pair of staves anchored to fixed points in theground. The upright mast of a derrick frequently…
Mechanical engineering · Machinery · Kinematics · Gearing · Strength of materials · Hydraulics · Compressed air
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