The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 266
ir when in a compressed stale, to suchrailways as have vaives which open inwards ; and lastly, the invention con-sists in causing tlie air in the traction pipe, which has been used for propel-ling, to be returned bacl; into reservoirs to be again used. The accompanyingfigure shows a section of a… … now in use. The inventors state that these valves are to be combined wlihtransverse valves, which they prefer to be flap valves, so constructed thatthey may allow the piston to pass freely, and also that they may act as aslopfor the air to press against when propelling the piston, whether in one…
Architecture · Civil engineering · Science
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