Brotherhood Notch

Brotherhood Notch
On steam locomotive - reverse gear hooked up nearer dead center, light throttle, thus using less steam, pulling light train - making it easier on fireman ...

Brotherhood Notch
On steam locomotives, a notch high on the reverse lever quadrant which admitted a very limited amount of steam to the cylinder making it easier on fireman, but taking longer to get over the road.
Brownies ...

See also: Point, Triple Valve, Train Line, Train Brake, Train Register