Model engine construction, with practical instructions to artificers and amateurs (1894)
Alexander, John Henry. [from old catalog] · London, New York, Whittaker · leaf 76
Fig. 13. tightened up, as required to suit the steam pressure.The spring-balance at its lower end is pivoted toa bracket, which is soldered or screwed into theboiler. A direct-acting spring-valve (see Fig. 13) is a goodone for small models. This can be easily made fromthe instructions given, or it…
Steam-engines · Machinery
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