. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. ATMOSPHERIC RMLWAY TUBES. William Waucvp, of Ashton-terrace, Coronation-road, Bristol, civil engineer, for " cerlain Improvements in the mamifacture and arrangement of parts and apjjaratus for the construction and matcing of atmospheric ;âGtanieil Aug. 11, 1S4G ; Enrolled Feb. 11, 1847. (Reported in the Patent Journal.) This invention relates to an improved method of manufacturing the trac- tion tubes for atmospheric railways, in which the driving pistons w
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. ATMOSPHERIC RMLWAY TUBES. William Waucvp, of Ashton-terrace, Coronation-road, Bristol, civil engineer, for " cerlain Improvements in the mamifacture and arrangement of parts and apjjaratus for the construction and matcing of atmospheric ;âGtanieil Aug. 11, 1S4G ; Enrolled Feb. 11, 1847. (Reported in the Patent Journal.) This invention relates to an improved method of manufacturing the trac- tion tubes for atmospheric railways, in which the driving pistons work these tubes, which are of cast iron or other suitable metals, made in the ordinary manner, but differ only in the construction of the longitudinal valve, which is formed of different segments (answering a douhle purpose, by forming the top portion of the traction tube as well as the longitudinal valve), each segment being formed bv layers of flexible material, such as india-rubber, leather, or other elastic'substance, placed between metal plates of given lengths, admitting bv its flexibility a free passage to the piston rod. Tig. 1 represents a transverse vertical section, and fig. 2 a plan view of the top, showing the longitudinal valve ; a a is a cast iron lube, or traction pipe; h is a metal segment of the longitudinal valve; c c is the outer segment or flexible portion of the same ; dd are four lifts, two of which are attached by their ends to one side of the segment, /, and the two alternate ones to the other, m, by which it will be seen that, as they press upon the flcsihle substances, c c, they keep the joint, indicated by the dotted lines, hermetically sealed ; e is a lifting valve wheel, wliich travels wiili the piston on the frames, //; 1/ is a piston motion rod, which is attached to the carriage, when motion is given to the piston by an externa' atmospheric pressure; the wheel i raises, as the piston advances, the alternate segments of the valve, shown by the do
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