Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1897)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & Sons · leaf 106
THE CARPENTIER DYl^AMOMETER. 97 … Fig, instead of automatically altering the tension in the strap to keep the weight floating, it changes the arc of contact A B until the friction is so altered (= F^ as to equilibrate the weight G with help of the smaller weight G. See Fig. 112. iT is a pulley keyed upon the shaft of the motor to…
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-607-386.webp)
