The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 136
able notonly on account of expense, but also of the space taken up in thevalve box—witliout at the same time lessening the area for the escapeof steam; and 2nd. to provide the means of taking off any part ofthe weight upon the valve, at any period of the vessels passage,with the greatest facility.… … power overcomes the weight of the vaive, and the part A, rises fromthe fixed seat B, leaving two openings for the escape of the steam atthe points C C. This area is much greater than in the ordinary valve,while tlie part to be loaded is only the rim H H, reducing the weightsto about one sixth of…
Architecture · Civil engineering · Science
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