Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 81
Fig. 156—Hexagonal-head Bolt and Nut. If the coupling is in an exposed position, wherethe nuts and bolt-heads would be liable to catchthe clothes of workmen or an idle driving bandwhich might come in the way, the flanges should be made thicker, and be provided with recessesfor the nuts and…
Mechanical drawing · Machine design
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