Thorne, William H[enry], 1847- [from old catalog] · Philadelphia, Williams, Brown & Earle · leaf 42
i %g! c … MECHANICAL, DRAWING. 37 conventional method of representing wrought-iron and steel, but in all cases wheresteel is intended, the word steel should be added to the title of the piece. CRANK SHAFT. PLATE 25. The Crank Shaft is of the type called double-crank, in which there are two arras,connected…
Mechanical drawing
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