Operator controlled variable force exercising machine

Claim 1

An exercising machine in which the force placed on the user of the machine can be rapidly varied by the user or another while the user is exercising with the machine comprising: a. pivotal frame means holding movable exercising weight means, said pivotal frame means having an upper end and a lower end, said upper end having upper pulley means connected thereto for receiving movable cable means, said pivotal frame means having guide rail means upon which said movable exercising weight means are slidably received; b. movable cable means connected to said movable exercising weight means; c. output means connected to said movable cable means for applying the force applied to said movable cable means by said movable exercising weight means to the body of the user; d. an axle rigidly connected to said lower end of said pivotal frame means for rotating said pivotal frame means in a vertical plane to change the force exerted by said movable exercising weights on said movable cable means, said axle having two ends, said axle means having bracket means rigidly connected to one end thereof, said bracket means having lower pulley means rotatably connected thereto to maintain the portion of said cable means extending from said lower pulley means to said output means at a constant length as said pivotal frame rotates on said axle; e. stationary base means for rotatably supporting said axle and said pivotal frame means; f. motor means for rotating said axle, said motor means being connected to said axle by drive means; and g. switch means connected to said motor means for selectively actuating said motor means to rotate said pivotal frame means to a desired position and thereby change the force exerted on said movable cable means by said movable exercising weight means.