초록 ▼

An elongated lever arm has one of its end portions pivotally connected to an upright of a box frame and extends generally horizontally inward into the frame opening. A cable guided by one or more pulleys or rollers is connected to the other end portion of the lever arm and is pulled manually by a us

An elongated lever arm has one of its end portions pivotally connected to an upright of a box frame and extends generally horizontally inward into the frame opening. A cable guided by one or more pulleys or rollers is connected to the other end portion of the lever arm and is pulled manually by a user to swing the lever arm. A force-applying or resistance element is connected between the base of the frame and any one of several points along the length of the lever arm between its pivot and the cable. The point of connection of the resistance element to the lever arm can be changed to adjust its effective force resisting swinging of the lever arm. A mechanical stop mechanism is provided to maintain the lever arm horizontal and to counteract the force of the resistance element so that the force adjustment can be made quickly and easily.

대표청구항 ▼

In a muscle-developing exercise device the improvement comprising the combination of a frame member, a lever arm member for being moved manually by a user and pivotally mounted on said frame member for swinging in opposite senses from a central position, a resistance member for applying a force tend

In a muscle-developing exercise device the improvement comprising the combination of a frame member, a lever arm member for being moved manually by a user and pivotally mounted on said frame member for swinging in opposite senses from a central position, a resistance member for applying a force tending to swing said lever arm member in one sense from its central position and resisting swinging of said lever arm member in the other sense from its central position, said resistance member being connectible to said lever arm member at any selected one of a plurality of locations for adjusting the effective resisting force of said resistance member, and stop means pivotally connected to and mounted on one of said members and swingable to a position to offset the force applied by said resistance member when said lever arm member is in its central position, the location of the connection of said resistance member to said lever arm member being adjustable while the force of said resistance member is offset by said stop means.