It's the same Torrington that made replacement main ball and "bushing" type bearings for Mac, Power Bee, and Power Products kart engines in the early to mid 60's, caged ball bearings for McCulloch and Homelite saws, and they also made an entry into the chain grinding market with two models of round grinders ( along with Nielsen ), the latter of which was for the harvester type chipper "pond and deck" chain.