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A horseshoe on a door is regarded as a protective talisman in some cultures. Horseshoes have long been considered lucky. They were originally made of iron, a material that was believed to ward off evil spirits, and traditionally were held in place with seven nails, seven being the luckiest number. [22]
1974: The lithium-ion battery is invented by M. Stanley Whittingham, and further developed in the 1980s and 1990s by John B. Goodenough, Rachid Yazami and Akira Yoshino. It has impacted modern consumer electronics and electric vehicles. [507] 1974: The Rubik's cube is invented by Ernő Rubik which went on to be the best selling puzzle ever. [508]
The mechanical production of dry photographic plates were invented by George Eastman who filed U.S. patent #226,503 on September 9, 1879, for (in his own words "An Improved Process for Preparing Gelatine Dry-Film Plates") which was issued to him on April 13, 1880. [156] [231] 1879 Carton
A staple remover allows for the quick removal of a staple from a material without causing damage. The form of destapler described was invented by William G. Pankonin of Chicago, Illinois. A patent application for the same was filed on December 12, 1932, granted on March 3, 1936, and published on April 3, 1936, as a patent. [248] 1932 Radio ...
The earliest known shoes are sagebrush bark sandals dating from approximately 7000 or 8000 BC, found in the Fort Rock Cave in the US state of Oregon in 1938. [5] The world's oldest leather shoe, made from a single piece of cowhide laced with a leather cord along seams at the front and back, was found in the Areni-1 cave complex in Armenia in 2008 and is believed to date to 3500 BC.
By 1896 the company had 1200 employees, and they were producing 50,000 bicycles. At its peak, the Monarch Cycle employed around 400 engineers. [4] The company sold bicycles worldwide. [5] In 1899 he sold his company to the Bicycle Trust. [1] In 1902 he became the treasurer of the Phoenix Horseshoe Company of Chicago.
Henry Burden (April 22, 1791 – January 19, 1871) was an engineer and businessman who built an industrial complex in Troy, New York called the Burden Iron Works.Burden's horseshoe machine, invented in 1835, was capable of making 60 horseshoes a minute.
Engineers during World War Two test a model of a Halifax bomber in a wind tunnel, an invention that dates back to 1871.. The following is a list and timeline of innovations as well as inventions and discoveries that involved British people or the United Kingdom including the predecessor states before the Treaty of Union in 1707, the Kingdom of England and the Kingdom of Scotland.