Farmall F-20 - Mechanical Manure Loader Question

Recently purchased this '36 F-20 with the mechanical manure loader on it..
Understand it is a factory built item. Any history on the manufacturer?
Being mechanically operated, do they operate well? Is it relatively safe
to use (verses a hyduralic model)? Anything I need to be made aware of
on these units?

Not sure if it will remain on the tractor after restoration. Are they
rare? Valuable? Do they have any value to anyone ? Looking for a
set of 36" rear rim/tires, or a set of 36" tires-only that could be traded
for. I live in SW Michigan. Thanx for your assistance.

Pete

My mom's Uncle Stanley had one of those many years ago. Basically it's a Rube Goldberg sort of thing; the belt pulley supplies power to a set of reduction chains which drive a winch. The winch pulls the arms and thus the bucket up using steel cable. A brake drum controls the descent, sort of.

We had a wagon lift that operated the same way, back before hydraulic wagons became popular. Once in a great while you could drop a wagon if the brake didn't catch, and you hoped the wagon was empty at the time. You had to make everyone stand clear of the whole thing when it was in use.