Awright..............lesseee.
It's not a cable lasher.
See the grove around the drum? When the drum turns, and the warning sign says it will, it will cause the upper part to shuttle back and forth. And when it moves, it going to have sort of a jack hammer motion because the groves are not a nice pretty sine wave; they're more exponential in appearance.
So. How does the drum receive its input? It doesn't look electric, and the part of the drum sticking out to the left looks like it might couple up to....something(?) And the device is attached at the point above the coupling through those two holes. You can see where the example on the bottom has been moving around a bit and has produced wear marks.
The nut shown on the top model is square. Farm implements use square nuts, and so do utility companies.
So, somehow the drum causes the rod part to shuttle back and forth at, maybe, a variable speed, but you can see where there has been a plate removed from both devices, so the shuttling mechanism is not visible when it's working.
And it looks like there is a cap at the far left underneath what I called the attachment point. The cap may pivot around the pin in it and maybe plug up the rod(?) It even looks like the cap is reinforced at the end, as if it were built to absorb pressure from something.....
But aside from assuming a jack hammering motion and unknown input I can't get much further......
Can anyone take it from here?
