Abstract: A compound bow is disclosed with the improvement of a leaverage-increasing structure having a pair of rotatable wheels mounted on the bow above and below the handgrip thereof with a first and second cable member attached to and extending around each of the wheels respectively and further extending to and attached to the bowstring above and below the point of arrow notch engagement. A first and second crank extending through the central axis of the wheels, such cranks having an offset portion interconnected with a third and fourth cable attached to the opposite bow limb ends, pull such bow limb ends inward upon the pulling of the bowstring and the rotation of the first and second wheels by the movement of the first and second cables. Upon the full drawing of the bow, tension on the third and fourth cables is released and the first and second wheels are rotated back to their original positions.