stop-pin

Updated: May 12, 2025

When the finger-key is depressed, it raises the bar c8, which in turn trips the yoke-trigger c6 from under the cam-yoke c2, permitting the latter to fall, thereby lowering the cam c4 into peripheral engagement with the rubber roll, at the same time disengaging the cam from the stop-pin c7.

Homer Heath Nugent - A Book of Exposition