bridge trolley

bridge trolley

[′brij ‚träl·ē]
(mechanical engineering)
Either of the wheeled attachments at the ends of the bridge of an overhead traveling crane, permitting the bridge to move backward and forward on elevated tracks.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
* DAY TRIPPERS: Trolleybus enthusiasts at Longroyd Bridge Trolley Shed in May, 1963.