. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ps inCalifornia and elsewhere have at first followed SirHenry Bessemers plan of more than 30 years ago(Proceedings, 1852), employing a shrouded wheel,in which the sides of the vanes, V, are attached totwo enclosing disks that revolve with them, as shownin Fig. 2, and in the plan of the wheel. Fig. 3. Thedifference is very great between a wheel or runnerconstructed in this manner with closed sides, andan open wheel w
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ps inCalifornia and elsewhere have at first followed SirHenry Bessemers plan of more than 30 years ago(Proceedings, 1852), employing a shrouded wheel,in which the sides of the vanes, V, are attached totwo enclosing disks that revolve with them, as shownin Fig. 2, and in the plan of the wheel. Fig. 3. Thedifference is very great between a wheel or runnerconstructed in this manner with closed sides, andan open wheel without enclosing disks attached tothe vanes. With the shrouded wheel a water-tightjoint must be maintained all round the inlet orifice,otherwise the water would only circulate throughthe pump, passing from the circumference back tothe inlet. Such leakage is increased by the pressure,which at all points on the sides of the wheels is thesame as in the discharge pipe or at the dischargeorifices of the wheels. The skin friction of thewater is no less with a shrouded wheel; the waterinstead of being driven round in contact with the sides of the stationary casing, flows through44. Fis. 1.—Centrifugal pump in pit. 690 PUMPS, KOTARY.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
