 | 1844 - 714 pages
...set of rollers attached to the carriage close down again, a portion of a continuous flexible reive or flap, of peculiar construction, covering the aperture...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | James Pim - 1841 - 60 pages
...a few feet, and another set of rollers, attached to the carriage, close down again, a portion of a continuous flexible valve or flap, of peculiar construction,...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | 1841 - 280 pages
...covering the aperture ; and it is the very simple, ingenious, and efficient mode of successively 8 opening, and closing down and hermetically sealing...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | Great Britain. Parliament. House of Commons - 1842 - 420 pages
...of a few feet, and another set of rollers attached to the carriage close down again, a portion of a continuous flexible valve or flap, of peculiar construction,...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | John Holmes Agnew, Walter Hilliard Bidwell - 1844 - 600 pages
...closing dnwn and hermetically sealing this valve, as each train advanr.es and moves on, that censtitutes the merit of the invention, and the foundation of...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | 1844 - 730 pages
...and hermetically sealing this valve, as each train advances and moves on, that constitutes the met it of the invention, and the foundation of the patent...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
 | 1842 - 400 pages
...aperture ; and it is the very simple, ingenious, and efficient mode of successively opening and closmg down and hermetically sealing this valve, as each...sealing the valve again, so as to leave the pipe in a fit state to receive the travelling piston of the next train, and ready to be again exhausted of its... | |
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... down again, a portion of a continuous flexible valve or flap, of peculiar construction, covering the aperture ; and it is the very simple, ingenious, and efficient mode of successively opening, and closing down and hermetically sealing this valve,... 