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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. The pulley/cam system grants the user a mechanical advantage, and so the limbs of a compound bow are much stiffer than those of a recurve bow or ...
The binary cam is a design for the pulley system of a compound bow. Craig Yehle, director of research and development at Bowtech Archery, received a patent [1] for the design on December 11, 2007. Bowtech started equipping its bows with the new cam design in the 2005 model year. [2] [3]
This is a list of the 91 original (pre-war) Martin D-45s made by C.F. Martin & Co. between the years 1933 and 1942, generally recognized to be the most desired, and highly valued, acoustic guitars ever made; in American Guitars - An Illustrated History, author Tom Wheeler describes them as "among American guitar's irreplaceable treasures". [1]
Stargazers should prepare to lose sleep on Tuesday, Aug. 12, as two celestial sights unfold. The first event will be visible before sunrise and will feature the two brightest planets in the sky ...
Allen was born July 12, 1909, in Stilwell, Kansas.In the 1960s, he sawed the ends off a conventional recurve bow and then added pulleys to each end. [1] Allen experimented with a number of designs to apply for a patent on June 23, 1966, [2] and U.S. patent 3,486,495 was granted to him in December 1969.
A Canadian woman allegedly attempted to smuggle 22 pounds of methamphetamine wrapped as Christmas presents through a New Zealand airport on Sunday, Dec. 8. According to a news release from the New ...
Beyond the familiar traditions like Santa Claus, a fir tree, caroling and gift-giving, a number of countries—including the U.S.—bring their own unique twists, both old and new, to the holiday.
Such "Holmegaard style" bows are used in flight archery competitions. For flight bows, an optimum between the length of the stiff tips and the draw force of the bow is desired. If the outer limbs are too long, their weight exceeds the capacity of the energy stored in inner limbs. The outer limbs can also become unstable if made too thin.
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