The Century dictionary and cyclopedia; a work of universal reference in all departments of knowledge, with a new atlas of the world .. . a .iM ! : . I with levers as in power-boilers, while ill . .111-1 1/ tlic ivci.;!; directly applied to the valve-stcm— .1 common method with low-prcssute steam-boilers used for for obviating or diminishing the risk of explo-sion in steam-boilers. The form and constructionof safety-valves are exceedingly various, but the principleof all is the same —that of opposingthe pressure with-in the boiler bysuch a force as will
The Century dictionary and cyclopedia; a work of universal reference in all departments of knowledge, with a new atlas of the world .. . a .iM ! : . I with levers as in power-boilers, while ill . .111-1 1/ tlic ivci.;!; directly applied to the valve-stcm— .1 common method with low-prcssute steam-boilers used for for obviating or diminishing the risk of explo-sion in steam-boilers. The form and constructionof safety-valves are exceedingly various, but the principleof all is the same —that of opposingthe pressure with-in the boiler bysuch a force as willyield before itreaches the pointof danger, anil iier-mit the steam toescape. The mostsimple and obviouskinti of safety-valveis that ill which aweight is placeddirectly over astenin-tlght platefitted to an aper-ture in the , however,the pressure ishigh, this form be-comes inconve-nient, and the lev-er safety-valve isadojited. — Inter-nal safety-valve, in a steam-lioiler, a valvewhich opens in-ward to admit air. (.?» form of Safety-valve).a, valve-seat l>asc which screws in : 6,cup-shaped outlet; c, valve ; tj, coiled sprint;which presses valve to its seat; f, lever bywhith the \.i\vc can be opened at will:/;set-nut by which the pressure of the springis iiillu^Ied ; A, removable cap.
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Keywords: ., bookcentury1800, booksubjectatlases, booksubjectenglishlanguage
