Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 92
JZ3_ ■tar Fig. 65. Original Form of Prony Brake the outer end of lever L to prevent an accident in case the brakeshould happen to grip the wheel and cause the weight W to be thrown over. The amount of work absorbed by the brake depends uponthe weight W, the length R, and the speed. It is… … Fig. 66. Rope Form of Prony Brake lever L is horizontal. Letting / equal the coefficient of friction, pthe pressure of the blocks, and r the radius of the pulley, we have fpr = WR 80 STEAM ENGINE INDICATORS The work done at the face of the pulley equals the tangentialforce between the block and the…
Indicators for steam-engines · Steam-engines
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