Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 394
construction, as are the cocks used in gas-fitting ; size ofvent of air-cocks, -J to J inch diam-eter. Fig. 867 is an air-cock in whichthe valve is a plug of Jenkinss pat-ent composition, mostly rubber andgraphite, on a flat seat of small sur-face. Figs. 868 and 869 are frontviews of globe -… … 378 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. pipe from the horizontal one ; the same purpose is attained by putting astraightway valve on the vertical pipe. The valve seats of all globe-valves,kept in stock and on sale, are now made of soft metal or of rubber, or of somemixture of it…
Mechanical drawing
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