Tripcocks
Anyone know anything about the history of the tripcocks used on TfL
lines? In 1893 J. R. Dix, manager of the Corris Railway, patented a device to prevent a train passing a signal at danger, described thus: The wire which places the signal at danger also elevates a lever between the metals, which, coming into contact with the brake tap on the engine, operates upon the steam or automatic brake and brings the train to a standstill. He sold the patent in 1901, about the same time tripcocks were introduced in London. What I'd like to know is, were the tripcocks based on Dix's patent or could the purchase have been a device to prevent a claim for infringement? |
Tripcocks
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