Power and free trolley apparatus

Details Power and free trolley apparatus Power and free trolley apparatus

B - Operations, Transporting

61

B

198/12.08

B61B 10/02 (2006.01)

Patent

CA 1097247

POWER AND FREE TROLLEY APPARATUS Abstract of the Disclosure Improved power and free trolley apparatus includes independent pusher and hold back dogs positively moved to an accumulate position by a counterweighted actuating lever moving to an accumulate position. The dogs, however, are self- biased, the pusher dog self-locking in its drive position, and the dogs are not interlocked with the lever. They move independently of the lever into operative position when the lever is moved into a non-actuating position and out of blocking relationship with the dogs. The actuating lever counterweight defines a trolley brake for preventing excessive trolley bounce back during accumulation. Another aspect of the invention includes a movable cam selectively raising a drive dog in a trailing trolley for switching, and permitting accumulation of trolleys through a switch zone when held in an inoperative position as when the switch zone is choked.

359158

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