Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 343
is pre-vented by the contact of the pistons withFig. 366. . • ^ the casing and with each other. Sliding, and therefore wear, takes place not only between the pistons and thecasing, but also between the pistons themselves, and it is a matterof difficulty to keep a fluid-tight contact. It is for this… … TOOTHED CIRCULAR WHEELS. 333 blowers), and also for pumping thick pasty fluids which mightinterfere with the proper working of the valves. There are two points of detail which ought to be noticed. Inthe first place, if toothed pistons are used, as shown in Fig. 366,one wheel can always act as…
Machinery, Kinematics of
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