High-Low Pulley Rack System for Weight Machine

A pulley rack for an exercise machine, the pulley rack comprising:

• a support frame;
• a counterweight having one or more counterweight pulleys, the counterweight moveable in a vertical direction relative to the support frame;
• one or more guide pulleys mounted to the support frame;
• a cable end assembly moveably mounted to the upright;
• a first cable section extending from a fixed connection at the cable end assembly to a first of the counterweight pulleys;
• and
• a second cable section extending downwardly from a pullable connection at the cable end assembly around one of the guide pulleys and to the first of the counterweight pulleys;
• wherein the counterweight is vertically moveable by a force exerted on the pullable connection of the second cable section;
• and
• wherein movement of the cable end assembly along the upright does not move the counterweight.

A method of operating an exercise machine, comprising:

• moving a cable end assembly along an upright of a support frame, wherein the cable end assembly has a fixed attachment to a first end of a pull cable, and wherein a second end of the pull cable is pullable through the cable end assembly;
• and
• locking the cable end assembly in one of a plurality of positions along the upright;
• wherein the pull cable, between the first end and the second end, extends downwardly from the cable end assembly and is routed through one or more guide pulleys mounted to the exercise machine and one or more counterweight pulleys mounted to a moveable counterweight;
• and
• wherein moving the cable end assembly along the upright does not alter the position of a counterweight.