. The Ontario high school physics. chamber B surroundingthe barrel, is connected to thevessel from which the air is to beremoved. On rising the pistonpushes before it the air in thebarrel, and on reaching the top itpushes up O about \ inch, thusallowing the imprisoned air toescape through the oil into theupper part of the cylinder, from which it passes out by thetube D. When the piston descends the spring K,acting upon the packing /, closes the upperpart of the cylinder, and the piston on reachingthe bottom drives whatever oil or air is beneathout through the tube F, or allows it to go upthrou
. The Ontario high school physics. chamber B surroundingthe barrel, is connected to thevessel from which the air is to beremoved. On rising the pistonpushes before it the air in thebarrel, and on reaching the top itpushes up O about \ inch, thusallowing the imprisoned air toescape through the oil into theupper part of the cylinder, from which it passes out by thetube D. When the piston descends the spring K,acting upon the packing /, closes the upperpart of the cylinder, and the piston on reachingthe bottom drives whatever oil or air is beneathout through the tube F, or allows it to go upthrough the valve E, into the space above thepiston. Oil is introduced into the cylinder at the pump has two cylinders they areconnected as shown in Fig. 149. With onecylinder the pressure of the air can be reducedto \ mm. of mercury, while with two a reduc-tion to -^^-fj mm. can be quickly obtained. Thesepumps are used for exhausting electric light p,g ^^^ _ verticalbulbs and in some cases for X-ray tubes. oran°oiiLir-pump.^^. MERCURY AIK-PUMP-BUXSEN JET PUMP 121
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
