Babendreier, Arthur O. [from old catalog], Maryland institute for the promotion of mechanic arts and design, Baltimore. [from old catalog] · Baltimore, Md., The Maryland institute for the promotion of mechanic arts and design · leaf 91
tools, such as screw-drivers, drills, socketwrenches, keys for locks, shafts for transmitting motionand power, etc., in their use are subjected to torsionalstrain. A shaft or tool assumed as fixedat one end and provided with a leveror crank arm to be acted upon by aweight or a pull (see Fig. A)… … Shear and Torsion 89 Any weight on the lever arm will twist the shaft moreor less, starting with zero at the fixed end and reachinga maximum where the lever is attached. The amountof the twist increases in proportion to the length of theshaft, provided the elastic limit is not exceeded. Thelever…
Mechanics
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