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In modern archery, a compound bow is a bow that uses a levering system, usually of cables and pulleys, to bend the limbs. [1] The compound bow was first developed in 1966 by Holless Wilbur Allen in North Kansas City, Missouri, and a US patent was granted in 1969. Compound bows are widely used in target practice and hunting.
let-off (measure) – The difference between a compound bow's holding weight and draw weight. Expressed as a percentage of the draw weight; for example, a bow with a draw weight of 70 lb and holding weight of 14 lb would have 80% let-off. limb-driven rest (equipment) – A drop-away rest that is mechanically linked to one of a compound bow's limbs.
Composite bows were soon adopted and adapted by civilizations who came into contact with nomads, such as the Chinese, Assyrians, and Egyptians. Several composite bows were found in the tomb of Tutankhamun, who died in 1324 BCE. [13] Composite bows (and chariots) are known in China from at least the Shang dynasty (1600–1100 BCE). [14]
This limb stiffness makes the compound bow more energy-efficient than other bows, in conjunction with the pulley/cams. The typical compound bow has its string applied to pulleys (cams), and one or both of the pulleys have one or more cables attached to the opposite limb. When the string is drawn back, the string causes the pulleys to turn.
Drawing a bow, from a 1908 archery manual. A bow consists of a semi-rigid but elastic arc with a high-tensile bowstring joining the ends of the two limbs of the bow.An arrow is a projectile with a pointed tip and a long shaft with stabilizer fins towards the back, with a narrow notch at the very end to contact the bowstring.
Target archery is the most popular form of archery, in which members shoot at stationary circular targets at varying distances. All types of bow – longbow , barebow, recurve and compound – can be used.