Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 515
on which this lever rests is almost coincident with the centre of gravity of the counterweight C;and when the gun is fired the elevators roll on the platform. Consequently the fulcrum travels awayfrom the end of the weight-arm toward the end of the power-arm. Thus the resistance to the recoil,least…
Mechanical engineering -- Dictionaries
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