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 65
r the varying value of the windage. With some dynamometers having revolving levers, bell-cranks, and the like, such as the Emerson power scale, centrifugal force acting on these .-parts maycause a distortion of the indica-tions. This is allowed for underthe windage corrections. (d) Comparison with… … ^Ploi fe carryirtof pulleys,free to turn on center Fig. 27.—Belt Dynamometer.dynamometer weight in turn, power being delivered as in usual DYNAMOMETERS 45 operation. The torque shown by the prony brake is the truetorque measured by the corresponding weight. When a jockyw^eight is used as for the…
Mechanical engineering laboratories
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