Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 622
r theaction of the regulator. The shaft on which the counterbalance-cam rotates has an index-wheel,and index that can be set at any desired water-pressure. So long as the water-pressure varies fromthe figure at which the index is set, the friction-clutch is kept in gear by the weighted lever, and… … 594 PUMPING ENGINES. friction-clutch is thrown into gear again, changing the cut-off, so as to maintain the water-pressureconstant. It will be seen that the cut-off is regulated by positive gear driven by the engine, and theonly work required of the regulator is to connect or disconnect this gear.…
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