Abstract: Fluid pressure is exerted upon fulcrum or inner end points of the arms of bows (including crossbows, archery bows, and compound bows). The fluid pressure expands fluid cylinders which pull the inner ends of, or push the middle of, the bent arms of the bow. The resulting increase in tension in the arms of the bow produces greater distance traveled, velocity, and therefore accuracy of the missile, when the string is released.
Abstract: An apparatus for cocking a conventional crossbow, the crossbow having a stock with a first end and a second end. The apparatus comprises a pair of pulleys that are removably attachable to the string of the crossbow, and a cord extending through one pulley, about the second end of the crossbow stock and through the other pulley, so that by pulling the opposite ends of the string the bow may be cocked.