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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.
By the 1920s, battery holders used twin metal clips (like fuse holders) to hold the battery in place while making electrical contact. Patent no. 1439429 was granted in Dec. 1922 for an assembly with two spring arm clips, a small switch, and a lamp assembly on the end of connected wires.
The interior of the Apollo PLSS Diagram of the A7L PLSS and OPS, with interfaces to the astronaut and the Lunar Module cabin. The portable life support system used in the Apollo lunar landing missions used lithium hydroxide to remove the carbon dioxide from the breathing air, and circulated water in an open loop through a liquid-cooled garment, expelling the water into space, where it turned ...
Of the five bow manufacturing companies to retain the right to manufacture compound bows utilizing Allen's design and patent, PSE (Precision Shooting Equipment) is the only survivor. PSE is the parent company of Browning Archery and the former Archery Research (AR). [3] Allen lived in Kansas City, Missouri. He moved to Billings, Missouri in ...
Many torches use a hose-supplied gas feed, which can be mains gas when used in industrial settings. They may also have a forced-air supply, from either an air blower or an oxygen cylinder. Both of these larger and more powerful designs are less commonly described as blowtorches, while the term blowtorch is usually reserved for the smaller and ...
2017/2. Exarc.net. Abstract: This bow was a concept, commissioned from Ulrich Velthuysen, a Swedish archer. This horn bow could be classified as a post-conquest design from early 14th century AD Mongolia. In this article, I will describe, step-by-step, the gathering and processing of materials, and the construction of this design of horn bow.
Mixtec blowgun Tlacalhuazcuahuitl depicted in the Codex Bodley. Many cultures have used such a weapon, but various indigenous and aboriginal peoples of East Asia, Southeast Asia, Western Europe, North America, Central America (the Huehuetenango region of Guatemala), and South America (the Amazon Basin and the Guianas) are best known for its historical usage.
Bower was born in London. [7] His mother Anne Elizabeth Roseberry (b. 28 June 1954) is a music manager and his father David Bower works for the Gibson Guitar Corporation. [8] [9] His maternal great-great-great-great-grandfather was Sir John Campbell, of Airds, Lieutenant Governor of Saint Vincent and the Grenadines.
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