hook-motion

And again, I had tried to switch with an old hook-motion in the night and forgot to take out the starting-bar, and she threw it at me, knocking out some teeth; and taking it altogether, I was a changed man.

Danger Signals Remarkable, Exciting and Unique Examples of the Bravery, Daring and Stoicism in the Midst of Danger of Train Dispatchers and Railroad Engineers John A. Hill