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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]
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.
A modern invention, the bow quiver attaches directly to the bow's limbs and holds the arrows steady with a clip of some kind. They are popular with compound bow hunters as it allows one piece of equipment to be carried in the field without encumbering the hunter's body.
Swivels in the line are important. Distinguish between a long arching collection of kites in a bow, or a rainbow pattern from a power kite called a bow kite. [56] [57] [58] Aqua-glider These various-formed manned kites were kited behind tow boats over water. [59] Air Force Lt. Col. Bill Skliar in 1959 designed a biplane kite glider nicknamed ...
Also ship's magazine. The ammunition storage area aboard a warship. magnetic bearing An absolute bearing using magnetic north. magnetic north The direction towards the North Magnetic Pole. Varies slowly over time. maiden voyage The first voyage of a ship in its intended role, i.e. excluding trial trips. Maierform bow A V-shaped bow introduced in the late 1920s which allowed a ship to maintain ...
Bow drill (strap-drill) are the first machine drills, as they convert a back and forth motion to a rotary motion, and they can be traced back to around 10,000 years ago. It was discovered that tying a cord around a stick, and then attaching the ends of the string to the ends of a stick (a bow), allowed a user to drill quicker and more efficiently.