Mechanical laboratory methods; a testing of instruments and machines in the mechanical engineering laboratory and in practice (1918)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 235
in the case of the D-valve taking steamoutside. The steam lap circles may be constructed by firstlocating a point x on the eccentric circle such that the sum ofits perpendicular distances from the lines 01 and 02 equals thesum of the steam laps. The lap circles may now be drawnabout x as a center… … Bad Conn. Rod Lencjih Fig. 88.—Setting for Equal Cut-offs. Using the data for the lead and port opening at one end(preferably the crank end, since there they are larger) the valvemay now be set for the assumed cut-offs. To do this, the crankis revolved until the valve has moved as far as it will…
Mechanical engineering laboratories
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