The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 200
n tlie marking apparatus, yet they may have sufficientpower to influence the action of the current of the battery so as to in-terfi-re with the perfect operation of the machine. (To be conlhiucd.J LOCOMOTIVE SLIDE VALVES. Sir—The following is a scheme for relieving the slide valves of alocomotive… … In this sectional view, the slide will be seen to have two ports a, aconnected with each other, and of equal area to those on the cylinderface, b, b; c is a plate placed on the back of the valve, and kept there bymeans of a strong spring, which should be tested, to stand the amountof pressure there…
Architecture · Civil engineering · Science
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