Experimental engineering and manual for testing (1903)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & sons; [etc., etc.] · leaf 493
e-plate of a lathe, the tool-rest being utilizedas a guide, may be used instead of an engine for obtainingcomplete determination of this error. The amount of errorcaused by over-travel of the drum has been found by experi-ment to be from 0.5 to 1.5 per cent at 250 revolutions, with thebest tension… … Fig. 197.—Brown Drum-spring Testing-device. or less stress; this may be determined by the instrument shownin Fig. 197. The testing instrument consists of a woodenplate, A^ on one end of which is fastened the brass frame, BB^carrying the slide, C, with its cross-head, D, The head ofthe spring, F, is…
Building materials · Machinery
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