Automatic Train Stop
Description:
Patent for an automatic train stop. Used to simplify the construction where fewer magnets and changeable switches are necessary. To provide an automatic train control mechanism with a normally closed circuit, the breakage or disarrangement of any part that would ensure the stopping of the train.
Date:
May 21, 1918
Creator:
Bulla, Melbern B.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department