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Dayton Sure-Grip & Shore [9] was founded in 1924 [10] by Art & Carl Kinnenger with help from Charles Danis and Fred Kramer. Carl Kinnenger held the patent on the snap tie design (to hold formwork together) and Dayton Sure-Grip & Shore was licensed to sell it in the U.S. out of their Downtown Dayton location.
In 1907 the S.R. Slaymaker Co. was reorganized and renamed the Slaymaker Lock Manufacturing Co. They purchased Dayton Manufacturing, an Ohio lock making company, in 1917. Also in 1917 the company was once again renamed when W. E. Fraim bought into the company and the company's new name became the Slaymaker Lock Company.
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...
Like all Janney couplers, the Tightlock is "semi-automatic". The couplers automatically lock when cars are pushed together, but workers must go between cars to hook up the air lines for the pneumatic brakes and connect cables for head-end power and other communications. To separate cars, a worker must use a lever to move the locking pin that ...
The Wedglock coupler is named for the pneumatic wedges that lock the moving parts of the coupler head in the engaged position. It is the standard automatic coupler used on London Underground trains. The coupler was introduced in 1936 [56] and is manufactured by William Cook Rail [57] and Voith. [58]
Patented originally in 1912, the lockrod was first used to secure railroad boxcar doors. Today, sometimes confused with locking bars or bar locks, lockrods have evolved to secure virtually every trailer or container that has a swing door (a door that swings open and closed rather than rolls up).
The device consists of two pieces which, when locked together, form one long, fixed bar with two protruding hooks opening towards the ends of the bar. Each piece has one hook, intended to fit around the rim of the steering wheel. The smaller of the two pieces fits inside the larger piece and slides in and out for sizing.
The coupler was developed in 1932 and named SA3 (abbreviation of Russian Советская автосцепка, 3-й вариант, Soviet Automatic-Coupler 3rd Variant) and was an improved version of the Willison coupler, with better design of lock parts and mechanics. Conversion of rolling stock began in 1935.