Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 477
loses the valve at the end of thestroke, and then, before the time forthe valve to open arrives again, thelever withdraws and leaves the valvefree to open whenever the conditionsrequire it. The action is the samewith both suction and dischargevalves, and much of the mechanismis common to both. Both… … Fig. 20.—Poppet valves for air compressors—Riedler system. 4 shows the valves in relation to their seats and the method by whichthe inlet valves are given a double port. Spring-closed relief or safety valves are also provided (not shown)to provide for any possible failure of the regular valves…
Machine design
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