Compact weight lifting machine

Abstract

A compact weight lifting machine includes a lift bar assembly including a lift cable and a lift bar which operates through the lift cable to lift selected weights from a weight stack responsive to either upward or downward movement of the lift bar. A seat assembly is positioned beneath the lift bar and includes first and second sections selectively positionable to support a user to perform a variety of exercises. A leg extension/leg curl mechanism located at one end of the seat assembly and a butterfly mechanism located at the opposite end of the seat assembly also operate through the lift cable to lift selected weights from the weight stack.

I claim:  
     
       1. A compact weight lifting machine comprising: 
       a lift bar having at least one handle;  
       means for supporting the lift bar for movement in first and second opposite directions;  
       a pivot arm;  
       means connecting the pivot arm to the lift bar for movement therewith;  
       means for selectively varying the positioning of at least the handle of the lift bar relative to the pivot arm;  
       first and second pulleys mounted on opposite sides of the pivot arm, respectively;  
       means for moving the first pulley in the first direction with the pivot arm when the lift bar is moved in the first direction;  
       means for limiting movement of the second pulley in the first direction when the first pulley is moved in the first direction;  
       means for moving the second pulley in the second direction when the lift bar is moved in the second direction;  
       means for limiting movement of the first pulley in the second direction when the second pulley is moved in the second direction;  
       a continuous cable trained around the first and second pulleys;  
       means for securing one end of the cable against movement; and  
       resistance means connected to the other end of the cable for resisting movement of the lift bar.  
     
     
       2. The compact weight lifting machine according to  claim 1  further comprising: 
       a seat assembling  assembly positioned beneath the lift bar and including interconnected first and second sections; and  
       means for selectively securing the first and second sections of the seat assembly in a variety of angular relationships to comfortably support a user while engaging the lift bar.  
     
     
       3. The compact weight lifting machine according to  claim 2  further comprising an auxiliary lift mechanism located at one end of the seat assembly and connected to the cable for actuation by the legs of the user in both seated and prone positions on the seat assembly. 
     
     
       4. The compact weight lifting machine according to  claim 3  further comprising a second auxiliary lift mechanism located at the other end of the seat assembly and adopted for actuation by the arms of the user while in a reclining position on the seat assembly. 
     
     
       5. In an exercise machine of the type in which at least one weight is lifted in response to a predetermined movement, the improvement comprising: 
       
         a lift bar supported for pivotal movement about a horizontal axis in first and second directions from an initial position;  
       
       
         a first lever supported for pivotal movement in the first and second directions;  
       
       
         a first pulley rotatably supported on the first lever;  
       
       
         means for moving the first lever and the first pulley in the first direction when the lift bar is moved in the first direction;  
       
       
         a second lever supported for pivotal movement with the lift bar in the first and second directions;  
       
       
         a second pulley rotatably supported on the second lever;  
       
       
         means for moving the second pulley in the second direction when the lift bar is moved in the second direction;  
       
       
         means for limiting movement of the first pulley in the second direction when the second pulley is moved in the second direction; and  
       
       
         a cable connected to the at least one weight and passing around the first and second pulley to a fixed restraint. 
       
     
     
       6. The compact weight lifting machine according to  claim 5  and further comprising: 
       
         a seat assembly having first and second sections positioned beneath the lift bar and including means for selectively interconnecting the first and second sections; and  
       
       
         means for selectively securing the first and second sections of the seat assembly in a variety of angular relationships to comfortably support a user engaging the lift bar.