Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 105
Figure 70 be such that the belt will pull on the under side. Thisallows the slack of the belt to hang downward on the … Figure 71 upper side and increases the arc of contact, as illus-trated in Figure 70, whereas a belt operating as that
Electrical engineering · Electric testing
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