One could hook up an electric motor to that crank handle. But I suspect the overseeing bureaucrat would disapprove.
I suspect the crank just turns a small generator that powers the rest of the mechanism, which dispenses pennies at fixed intervals.
Attaching the crank to a motor might kill the electronics with an overvoltage, but probably wouldn't produce any additional payout.
Between your comment and tungsten's, I think I'm missing something.
What would actually happen is that instead of motors, sweating wage slaves would be charged most of their crank's output merely for the privilege of being permitted to stand near it and turn it. Queues would form. Men with guns would watch and ensure that "their" crank's pennies are not "misappropriated."
If you find this scenario outlandish, realize that I have just described the history of land (and all other natural resource) ownership.