This is a problem because the crank does other things in addition to cranking (it holds things together)
There is a device, it is a metal loop with a tube attached to one end, the tube is side drilled and tapped for a set screw
You will need a washer about the outside diamater of the knob's Hub
and one of these devices and some other things.
Remove knob, CAREFUL IT falls apart when removed (The spring above it) then apply washer and device described, Lock it down with set screw same as knob was originally.
Now you need a tool that can "lock" into the device and be rotated by something,, perhaps an allen wrench (1/4 inch) and a battery operated screwdriver/drill.
That will do it.
Home is where I park it!