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Dart Manufacturing Company was founded in 1937 by William F. Dart as a machine shop, manufacturing key rings, steel tape measures, and dog tags for the Department of Defense. [5] When his son, William A. Dart, came out of the University of Michigan with three degrees ( metallurgy , mathematics , and engineering ), he worked for DuPont briefly ...
A key can be added to a keyring by forcing an end of the loop open and sliding the key along the spiral. A keyring or "split ring" is a circle cotter that holds keys and other small items sometimes connected to keychains. Other types of keyrings are made of leather, wood and rubber.
Originally Gateway Manufacturing Company, Kwikset was founded in California in 1946 by Adolf Schoepe, and Karl Rhinehart. [ 1 ] The current name for the company was derived from the company's first locks, which pioneered the then-revolutionary tubular lock design, which was relatively fast to install.
Yale & Towne Manufacturing Co, 1897. In 1868, the business was established in Stamford, Connecticut, by Henry R. Towne and Linus Yale Sr., an inventor renowned for creating the pin tumbler lock. Initially known as Yale Lock Manufacturing Co., the company later adopted the name Yale & Towne, with its base in Newport, New York. [3]
Master Lock is an American company that sells padlocks, combination locks, safes, and related security products.Now a subsidiary of Fortune Brands Innovations, Master Lock Company LLC was formed in 1921 by locksmith-inventor Harry Soref and is headquartered in Oak Creek, Wisconsin.
A split pin, also known as a cotter pin, or cotter key in the US, [1] is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. Typically made of thick wire with a half-circular cross section, split pins come in multiple sizes and types.
Alexander Parkes was born at Suffolk Street, Birmingham, the fourth son of James Mears Parkes and his wife Kerenhappuch Childs. Samuel Harrison, described by Sir Josiah Mason as the inventor of the split-ring (or key-ring) and widely credited with the invention of the steel pen, was his great-uncle. [6]
Schlage (/ ʃ l eɪ ɡ / SHLAYG) [1] [2] is an American lock manufacturer founded in 1920 by Walter Schlage. Schlage was headquartered in San Francisco from its inception until it relocated to Colorado Springs, Colorado, in 1997. Schlage also produces high-security key and cylinder lines Primus, Everest, and Everest Primus XP.
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