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William Weir
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20,202. Weir, W. Oct. 6. Air-pumps, steamengine. - The discharge pipe K of one pump B, for example the dry air - pump, is connected to the barrel A of the second, which may be the wet airpump, the port being situated just below the bucket of the latter at the end of its discharge stroke. The pumps may be driven from the same or different cylinders. Within the pipe K is a non - return valve L.
GB190520202D1905-10-061905-10-06Improvements in Steam Engine Air Pumps.
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