ADVOC INDUSTRY AND ENTERPRISE, AND JOURNAL OF MECHANICAL AND OTHER IMPROVEMENTS. VOLUME I.] NEW-YORK, THURSDAY, APRIL 30, 1840. [NUMBER 33.] PARK'S STEAM-EXPANSION VALVE, Glossary of Mechanical Terms. PUBLISHED EVERY THURSDAY MORNINS, AT THE (Continued from No. 32.; SUN BUILDINGS, … metals. Nitric Acid—A corrosive acid extracted from Explanation.—This engraving represents a sectional side view of" the interior of the steam-chest or valve-chamber of an ordinary high pres- The Song of the Silent Letters. nitre. sure steam engine. The sliding valve, A B C, is constructed similar…
