Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 595
tia- 564 EXPERIMEN TA L ENGINEERING. [§409. effects in the drum-motion, which is sometimes sufficient tomake the compression line concave when it should be convex,as shown in the lower diagram of Fig. 267. Vertical curvesare due in large measure to vibrations in the pencil-lever andindicator-spring… … Fig. 267.—Variation i.f Load. Different Forms of Admission-lines.—The form of the ad-mission-line is changed* according to the relative time of valve-opening and position of piston in its stroke. The normal form is shown at A. In B CD and E the valveopens late, and after the piston has started on…
Building materials · Machinery
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