Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 665
surface of cir-culating coils include the lengthsof angles and all fittings; in thevertical radiators include the base.Figs. 1542 and 1543 are theend and side elevation of a radia-tor for live or exhaust steam, in-closed in a case for indirect heat-ing. Air is forced through thecase into the… … Fig. 1544.
Mechanical drawing
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