Can't say as I've ever seen one. A tapered bushing would limit the shaft area you could use unlike a regular pulley that will go anywhere on the shaft.
Hey Russ, Did you make it to florida? Sorry to hear about your loss.
Yeah, that's where I am now. Got my Dad's arrangements taken care of and his possessions gone through today with my brother, have to visit a few people tomorrow, drive back Monday, and back to work Tuesday. It's about a 12 hour drive.