Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 113
or this purpose it is neces-sary that the ratio AB : ACshould be constant for allpositions of the crosshead (seeFigs. 103, 105, and 106), whereC represents a pin moved bythe crosshead of the engine,and B the pin to which theindicator string is attached.The cord is carried awayfrom the pin B… … Fig. 102.
Steam-engines
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