Hill, John A. (John Alexander), 1858-1916, Sinclair, Angus, 1841-1919 · New York : American Machinist Pub. Co · leaf 738
Packiug ringij lli on pistonand main valve arc packingrings D 6. No, 8, Westing-house Air-brake Co.s Cata-logue. 1890. This is the onlybell ringer that can be adjust-ed to use pressure in propor-tion to the power required.This is accomplished by menusof valve siem 17, which issecured in its…
Railroads · Locomotives
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