A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 119
weight of 1(8 TESTING GAS ENCIXES. ■water against a known head, in a given time, is easilyconverted into useful horse power. But in all such casesthe efficiency of the machines has to be allowed for, and asthis may be a rather uncertain quantity, the only reliablemethod of testing is to run the… … Fig. 71.—Friction Brake, lengths of good hemp rope placed over the upper semi-circumference of the flywheel, and guided by wood blocks.The ends of the ropes are spliced together so that a springbalance may be attached at one side of the wheel, whilst ahook for carrying weights may be attached to…
Internal combustion engines
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