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vacuum brake
noun
- a brake system, used on British and many overseas railways, in which the brake is held off by a vacuum on one side of the brake-operating cylinder. If the vacuum is destroyed by controlled leakage of air or a disruptive emergency, the brake is applied. It is now largely superseded by the Westinghouse brake system
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Example Sentences
In the 1886 tests there were five competitors—three buffer-brakes, one compressed-air brake, and one vacuum-brake.
From Project Gutenberg
So he traveled with the guard, chained to the vacuum brake, and shared that kindly official's dinner.
From Project Gutenberg
For a time a vacuum brake, which utilized atmospheric pressure, offered keen rivalry.
From Project Gutenberg
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