US Patent: RE5,504
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| Improvement in steam-power brake devices
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Patentee:
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| George Westinghouse, Jr. (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 26, 1873 |
| Granted: |
Jul. 29, 1873 |
| Reissue Information: |
| Reissue of 88,929 (Apr. 13, 1869) |
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Jeff Joslin
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Description: |
| This important patent covers the railway air-brake, which was a major safety advance because it replaced the need for a railwayman to manual activate the brakes in each car; instead, an air line interconnected the cars and activated all the brakes together. A later improvement changed the system so activate on pressure drop, rather than rise, which acted as a fail-safe if the air system suffered a pressure loss. |
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