Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 379
bolts may be •28Da/P , . -, ——7?? ^ 4 inch, and they may be placed at a pitch of seven toten times their diameter. Thenumber of ribs or webs may be about y- + 2 and their thickness •4DVP 100 • j,jjj gjg for the packing will depend on the design of packing adopted.Fig. 819 is a sectional plan and… … The size of the space
Mechanical drawing
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