Bridge accessory for track vehicles

Details Bridge accessory for track vehicles Bridge accessory for track vehicles

1976-02-09

1977-01-25

Blix, Trygve M.

Railway switches and signals

Drawbridge protection

104129, B61L 2304

Patent

active

040047652

ABSTRACT:
An accessory bridge for use with a model train set, a model car race set, or the like, wherein the vehicles traverse a path of travel defined by a specific track layout. Particularly, the bridge accessory is designed for use with a track layout having a cross-over point where one segment of the track crosses over another segment, such as a "figure 8" configuration layout. The bridge accessory includes a pivotally mounted bridge portion which supports the upper or cross-over track segment at an elevated height above the lower or cross-under track segment. The bridge is movable by a selectively actuatable drive unit between a down position where a vehicle may pass over the bridge and an up position where a vehicle may pass under the bridge. It is contemplated that the bridge be used with a model set where the vehicles derive their power directly from the track and includes a safety interlocking electrical circuit directly in the track segments so that a train or car is energized and can only pass over the bridge when in its down position and can only pass under the bridge when in its up position. An alarm is activated to produce an audible warning when the pivotal portion of the bridge is in motion.

REFERENCES:
patent: 486738 (1892-11-01), Rohlf
patent: 908713 (1909-01-01), Waddell
patent: 1905571 (1933-04-01), Smith
patent: 2256862 (1941-09-01), Duffy
patent: 2366848 (1945-01-01), Ferri

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