. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . there is no water in this space the bucket will be necessari-ly in its lowest position, and consequently the two ports for admitting steam to the pumpwill be wide open, and the pump will at once commence racing, since there will be no waterpresent for the pump to act on. This space having been filled with water, and the bucket inits highest position, the two steam-ports being closed, and the pump at a state of rest,
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . there is no water in this space the bucket will be necessari-ly in its lowest position, and consequently the two ports for admitting steam to the pumpwill be wide open, and the pump will at once commence racing, since there will be no waterpresent for the pump to act on. This space having been filled with water, and the bucket inits highest position, the two steam-ports being closed, and the pump at a state of rest, theintroduction of the water of condensation through the check-valve in the receiving-pipe shownon the left-hand side of the governor, flowing over into the bucket, will cause it to descendwhen it has received within it a sufficient quantity of water to overcome the floating powerof the water surrounding it; in descending it will, through the intervention of the bell-cranklever, cause the slide-valve to be moved toward the left, opening thereby the steam-ports foradmitting the passage of the steam from the steam-chest to the pump, which will start the 40-i GOVERNORS, Fig. :i.—Mason pump-governor. pump in operation. If the pump is of a capacity greater than the supply it will, after a fewstrokes, take water from the bucket enough to so lessen its weight that the surrounding water will float it upward and cause the slide-valve tomove to the right, thus closing the stcain-ijorts andstopping the punijts dperation until a sutlificnt amountof the water of condensation shall have been receivedanew into the bucket to cause it to descend and againoperate the pump. This operation continues on repeat-ing itself. 77(6 Mason Steam-Pump Governor is shown in It is attached directly to the piston-rod of thepump and operates a balanced valve placed in the steam-pipe, thereby adjusting the amount of steam to theneeds of the pump. It consists mainly of a cylindricalshell, or rese
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
