Treasures from metal waste container

I drove past some metal waste container and found good stuff! Here are my findings, check all the pictures, there is some odd machine, which I would like to know what it is. Haven´t tested if that works. Before that, have to check, if I have fuses for my house...

Tools & stuff.

THIS! It looks so great, but where it has been used?

Some electric motor info.

So great knob!

Something had been put inside and this had rotated it. But why?