Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 416
to 2 in length next the flange ; but ifthere is a good fillet in the angle of the fiange it is unnecessary. The flanges are almost invariably faced, and joints made with red and whitelead, or a sheet-rubber washer, or with corrugated copper gaskets (Fig. 936)of very thin sheet copper, which are…
Mechanical drawing
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