Roller bolt - definition of Roller bolt by The Free Dictionary
|the bar in a carriage to which the traces are attached; a whiffletree.|
See also: Roller
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive
I cut the roller bolt
slightly short so it wouldn't drag on the side plate.
So different have the two halves of the the last two campaigns been that they resemble two cut-and-shut motors with half a Roller bolted
on the back of a Reliant Robin.