The item you're describing is the "Barrett Brake Doctor". My father ground hundreds, if not thousands of brake shoes with the one at our shop back in the 50's. The other part of the setup was the "Drum Doctor" which was Barrett's name for their drum lathe.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!