nopart of the lighter metal of which the outer cyl-inders and cylinder heads are composed, is ex-posed to the heat of the explosion chamber. With proper water circulation all danger of theoverheating of the outer cylinders is thus avoided,and the proper adjustment maintained between therelative… … ings are of ample thickness throughout the lengthof explosion chamber, and below that are con-siderably reduced in thickness. As will be seenfrom the accompanying illustrations, an additionalshoulder upon the inner cylinder at the top ismachined to fit into a companion groove in the Magnalium…
Aeronautics
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