In Reply to: Lovejoy " Select O Speed" variable speed drive. posted by SelectOSpeed on June 13, 2018 at 07:49:25:
I believe it is just what it says on the label. Nothing to do with a Ford tractor.
Lovejoy has been making couplings for years.
They are still in business.
It appears to be a variable drive for V belts.
Handy for a lathe or something like that.