| Y/M/D | Description | Place |
|---|---|---|
| 1873/10/28 | George Westinghouse patents a system of compressed air that can be made to operate brakes and communicate signals in a railway-train. | Westinghouse Air Brake Company General Office Building, Wilmerding |
| 1893/04/00 | A Westinghouse air brake is installed to control the Ferris Wheel which is driven by 1000 hp reversible engine. A second 1000 hp engine is held in reserve. |
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