The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 65
Fig. 3. … area of the lid of the valve at H, and tlie area of the lid of thevalve at A, or in such other ])roiiortiiin. By this arrangement,whon nsed as a safety-valve, and wlien tlie dirtercnoe is only oneini-h in area, and the steam at a pressure of 60 lb. per square inch,the actual weif^ht to be…
Architecture · Civil engineering · Science
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
