Adjustable contact shoe assembly for a train

Electricity: transmission to vehicles – Collectors – Third-rail shoe

Patent

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Details

191 45R, B60L 500

Patent

active

060707038

ABSTRACT:
A contact shoe assembly for a train movable along a support track having an electrically-energized power rail extending substantially parallel with the support track. The contact shoe assembly includes a support member with two spaced-apart guide channels and can bend the shoe away from the power rail. A bracket arm is positioned between the guide channels and equipped with ball bearings that roll within the guide channels. A contact shoe is connected to a lower outwardly-extending portion of the bracket arm for contacting the power rail. A spring mounted between the support member and the bracket arm biases the contact shoe into a yielding engagement with the power rail. Vertical movement of the bracket arm responsive to a varying height of the power rail maintains the contact surface of the contact shoe horizontal and parallel to the power rail. When the shoe rides up on a safety board or other obstruction, the upper portion of the guide channels bend the contact shoe upward, away from the power rail, and toward the side of the train, until the obstruction is cleared.

REFERENCES:
patent: 1308534 (1919-07-01), Taylor
patent: 1308544 (1919-07-01), Howe
patent: 1754016 (1930-04-01), Hershberger
patent: 4042081 (1977-08-01), Pier
patent: 5669472 (1997-09-01), Azzouni
patent: 5669482 (1997-09-01), Mojden et al.

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