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By an order promulgated June 6, 1910, the Commission increased the minimum number of cars whose train brakes must be under the engineer's control to 85 percent. A 1910 legislative amendment required additional equipment, including ladders, sill steps, and hand brakes. [5]
Charles Fitch credited Whitney with successfully executing a firearms contract with interchangeable parts using the American System, [4] but historians Merritt Roe Smith and Robert B. Gordon have since determined that Whitney never actually achieved interchangeable parts manufacturing. His family's arms company, however, did so after his death.
Among several machine-tool patents, his most important was for planing metal granted on July 28, 1869. He served as a member of the board of water commissioners for the city of Hartford for four years. He was a director of the Hartford board of trade and the Pratt & Cady company. He served as president and director of the Electric Generator ...
1852 Elevator brake. An elevator or lift is a vertical transport vehicle that efficiently moves people or goods between floors of a building. In 1852, Elisha Graves Otis invented the first safety brake for elevators which prevents an elevator from spiralling into a free fall between numerous floors inside a building. [119] 1853 Burglar alarm
A gladhand connector or gladhand coupler is an interlocking hose coupling fitted to hoses supplying pressurized air from a tractor unit to air brakes on a semi-trailer, [1] or from a locomotive to railway air brakes on railroad cars. [2] Gladhand connectors resemble a pair of "hands shaking" when interlocked, hence the name. [1]
A Johnson bar activated parking/emergency brake on a 1930s White transit bus. Johnson bar is the term for several different hand-operated levers used in vehicles. Their distinguishing feature is a positive latch, typically spring-loaded, to hold the lever in a selected position, capable of being operated with one hand.
The Pratt & Whitney Company was founded in 1860 by Francis A. Pratt and Amos Whitney, with headquarters in Hartford, Connecticut. The company manufactured machine tools , tools for the makers of sewing machines , and gun-making machinery for use by the Union Army during the American Civil War .
Maudslay was the fifth of seven children of Henry Maudslay, a wheelwright in the Royal Engineers, and Margaret (nee Whitaker), the young widow of Joseph Laundy. [1] His father was wounded in action and so in 1756 became an 'artificer' at the Royal Arsenal, Woolwich (then in Kent), where he remained until 1776 [2] and died in 1780.