Elementary lessons in steam machinery and the marine steam engine, with a short description of the construction of a battleship (1893)
Langmaid, Joseph, Gaisford, H · London, New York : Macmillan · leaf 103
in other words we could not inpractice convey any considerable amount of force by the actionof one disc upon the other. The transmission of energy being an essential condition inmachinery, the discs are provided with teeth, as shown in Fig.41, and the maker endeavours to form and shape the teeth…
Steam-engines · Marine engines
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