Doesn't the broken section of that pulley destroy fan belts? A conventional balancer could be modified to drive a Lovejoy coupler by any machinist with a few brain cells to rub together. It would be a very simple machining procedure to fabricate a bolt-on adapter that uses the puller holes in the balancer to drive a coupling.
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!