Compound weight lifting exercising machine

A machine for the compound exercising of the muscles associated with the legs and for providing the proper variation of resistance to movement in all positions when the distal ends of the legs are being moved in substantially a straight line between the extended and retracted positions and vice versa, said machine comprising

• (1) frame means supporting components of said machine,
• (2) body support means on said frame means for supporting the upper torso of the user in a reclining position with the spine in substantially straight condition,
• (3) a pair of user actuated levers pivotally supported on said frame and in substantially vertical spaced-apart position for swinging back and forth movement of the lower ends thereof,
• (4) a foot pedal supported on the lower ends of each of said user actuated levers, said pedals being adapted to be engaged by the feet of the user for movement of said levers back and forth in predetermined arcs of movement, one end of the arc of movement being reached when the corresponding leg is in substantially extended position and the other end of the arc of movement being reached when the corresponding leg is in substantially retracted position,
• (5) a pair of negative profile cams supported for rotation of said frame and in adjacent spaced relationship, each of said negative profile cams having a different radius at different degrees of rotation thereof to provide moment arms of different lengths as said negative profile cam is rotated,
• (6) a pair of first flexible connector means, each being connected at one end to a position on the corresponding one of said negative profile cams and being connected at its other end to said corresponding lever at a position spaced from the pivotal support thereof,
• (7) a pair of wheels supported on said frame for rotation and in spaced apart relationship, each having a uniform radius and being fixed to rotate with said corresponding negative profile cams,
• (8) weight means offering resistance during an exercise, said weight means being supported for vertical movement on said frame, and
• (9) a pair of second flexible connector means, each being connected at one end to a position on the corresponding one of said wheels and being connected at its other end to said weight means, each of said second flexible connector means being wound onto said corresponding wheel to lift said weight means while said corresponding first flexible connector means is being unwound from said corresponding negative profile cam when said corresponding lever is being moved toward one end of said arc of movement, and said corresponding second flexible connector means being unwound from said corresponding wheel to lower said weight means while said corresponding first flexible connector means is being wound onto said corresponding negative profile cam when said corresponding lever is being moved toward the other end of said arc of movement, the longest radius of each of said negative profile cams being less than the length of the uniform radius of said corresponding wheel so that the amount of force applied by the user to said corresponding lever is greater than the amount of weight provided by said weight means, and the proper variation of resistance to movement is provided in all positions of said corresponding lever when the leg is being moved in substantially a straight line between the extended and retracted positions and vice versa.

A machine for the compound exercising of the muscles associated with the legs and for providing the proper variation of resistance to movement in all positions when the distal ends of the legs are being moved in substantially a straight line between the extended and retracted positions and vice versa, said machine comprising

• (1) frame means supporting components of said machine,
• (2) a pair of user actuated levers pivotally supported on said frame and in substantially vertical spaced-apart position for swinging back and forth movement of the lower ends thereof,
• (3) a foot pedal supported on the lower ends of each of said user actuated levers, said pedals being adapted to be engaged by the feet of the user for movement of said levers back and forth in predetermined arcs of movement, one end of the arc of movement being reached when the corresponding leg is in substantially extended position and the other end of the arc of movement being reached when the corresponding leg is in substantially retracted position,
• (4) body support means extending rearwardly from said foot pedals and including a pair of shoulder pads supported adjacent the rear end portion thereof, a headrest extending between said shoulder pads, and a support pad inclined at an angle of approximately 30 degrees from the horizontal and extending upwardly and away from said foot pedals,
• (5) body support adjustment means for supporting said body support for longitudinal adjustment on said frame means and for supporting the upper torso of users of different heights in a reclining position with the spine in substantially straight condition and comprising a body support frame, a rack carried by said frame means and extending longitudinally beneath said body support frame and away from said foot pedals, and means carried by said body support frame for selective engagement with said rack to permit longitudinal adjustment thereof and to support said body support frame in adjusted position,
• (6) said body support frame including a pair of forward legs, a forward pair of guide rollers supported on the lower portions of said forward legs, a single rear leg fixed on said support frame and having a lower end aligned with said rack, rack teeth on the lower end of said rear leg, a rear pair of guide rollers, and lever means interconnected between said rear leg and said rear guide rollers for permitting said rack teeth on the lower end of said rear leg to be lifted out of engagement with said rack to facilitate adjustment of said body frame means,
• (7) a pair of negative profile cams supported for rotation on said frame and in adjacent spaced relationship, each of said negative profile cams having a different radius at different degrees of rotation thereof to provide moment arms of different lengths as said negative profile cam is rotated,
• (8) a pair of first flexible connector means, each being connected at one end to a position on the corresponding one of said negative profile cams and being connected at its other end to said corresponding lever at a position spaced from the pivotal support thereof,
• (9) a pair of wheels supported on said frame for rotation and in spaced apart relationship, each having a uniform radius and being fixed to rotate with said corresponding negative profile cams,
• (10) weight means supported for vertical movement on said frame, and
• (11) a pair of second flexible connector means, each being connected at one end to a position on the corresponding one of said wheels and being connected at its other end to said weight means, each of said second flexible connector means being wound onto said corresponding wheel to lift said weight means while said corresponding first flexible connector means is being unwound from said corresponding negative profile cam when said corresponding lever is being moved toward one end of said arc of movement, and said corresponding second flexible connector means being unwound from said corresponding wheel to lower said weight means while said corresponding first flexible connector means is being wound onto said corresponding negative profile cam when said corresponding lever is being moved toward the other end of said arc of movement, the longest radius of each of said negative profile cams being less than the length of the uniform radius of said corresponding wheel so that the amount of force applied by the user to said corresponding lever is greater than the amount of weight provided by said weight means, and the proper variation of resistance to movement is provided in all positions of said corresponding lever when the leg is being moved in substantially a straight line between the extended and retracted positions and vice versa.