Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 435
nds resulting from the blow of eachof the hammers on the bells, and knowing besides the time of the entire revolution of the hammers,these two portions of time will be in the ratio of the are which measures the angle of the right linespassing through the extremity of each spring to the entire… … By this description it will be seen that simple springs without needles or scales, whose force of tensionfor the same lengthening may be sensibly unequal, give exactly the measurement of a tangential forceapplied to axes: by taking springs capable only of a tension of a ton, we may place eight on a…
Mechanical engineering
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