This double track gate has been in service for over 25 years and was described in an article in the February 2013 issue of online magazine Model Railroad Hobbyist.
The aisle bridge and scenery swing on a set of three door hinges.
Half open shows the double track bridge - fully open on the right.
The gap closes with a cam action, getting closer until closed as show on right.
Details of the hinge side of the gate. There are limit switches to cut track power. PRR signal at CP Laurel just before the aisle bridge.
Three videos were linked in my article which appeared in the February 2013 issue of the online
magazine Model Railroad Hobbyist. They show the gate in operation and are posted to youtube:
Aisle Gate Operation
Aisle Hinge Side
Aisle Cam action
Page updated February 11, 2016
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