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A catechism of the steam engine in its various applications to mines, mills, steam navigation, railways, and agriculture. With practical instructions for the manufacture and management of engines of every class (1864)

Bourne, John · New York, D. Appleton & co. · leaf 357

An illustration from A catechism of the steam engine in its various applications to mines, mills, steam navigation, railways, and agriculture. With practical instructions for the manufacture and management of engines of every class, 1864, leaf 357
are of various constructions, but perhaps themost common is the Bourdon, or, as it is known here, theAshcroft gauge, from the party introducing it, and holdingthe patent. Fig 59 represents its interior construction. It con-sists of a thin metallic tube,«, bent into nearly a complete circle, 340… … to the pressure, the elasticity of the metal returning the circleto its original position, when the pressure is removed. Thefree or closed end of the tube is connected by a link c with alever d, at the opposite end of which is segmental gear, in gearwith a pinion, on which is a hand, which marks…

Steam engineering · Steam-engines

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