The New York Air Brake Corporation, located in Watertown, New York, is a manufacturer of air brake and train control systems for the railroad industry worldwide.
155mm shells, one of the many items produced during the WWI period
New York Air Brake gauges to control a Rotair Valve Westinghouse Air brake
The vacuum brake is a braking system employed on trains and introduced in the mid-1860s. A variant, the automatic vacuum brake system, became almost universal in British train equipment and in countries influenced by British practice. Vacuum brakes also enjoyed a brief period of adoption in the United States, primarily on narrow-gauge railroads. Their limitations caused them to be progressively superseded by compressed air systems starting in the United Kingdom from the 1970s onward. The vacuum brake system is now obsolete; it is not in large-scale usage anywhere in the world, other than in South Africa, largely supplanted by air brakes.
Driver's brake control in a Black 5
Graduable brake valve (right) and the small (upper) and large ejector cocks from a GWR locomotive
Driver's brake control on a combined control and ejector. The ejector steam nozzles, large and small, are beneath the hexagonal brass plugs on the left.