London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 230
with avariable purchase. In fg. 37., a winch is used in place of ahandspike. If, in the arrangement thus described, we suppose the crank-pin at the lowest point, and call v the force in the tangent, orthat applied to the lever, and tending to turn round the crank-pin ; and t and t, the resistance…
Architecture
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
