Mechanical laboratory methods; the testing of instruments and machines in the mechanical engineering laboratory and in practice (1922)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 240
is generally a mark on the wristplate hub which registers with three stationary marks, as shown in 43 STEAM ENGINE TESTING 221 Fig. 93. The middle stationary mark indicates the correct centerposition of the wrist plate, and the outer marks, its extremepositions. If desired, the center position may… … Fig. 93. rod length may now be adjusted so that the eccentric throws thewrist plate to the correct extreme positions. Now, with the wrist plate in its center position and the steamvalves hooked up, the laps may be made the desired amountsby altering the lengths of the steam and exhaust links.…
Mechanical engineering
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