pretty much needed an ALICE tractor with that I'm not going to get this phrase right kind of the neutral spot in the transmission without actually being in neutral. so you didn't burn the clutch out letting it wrapped a little bales with strings.
very hard on a normal type clutch..
The old WD Allis had a hand clutch, one speed, either engaged or disengaged. It would stop tractor movement, but allow the PTO to continue operation.
Starting around the D-17 era, they changed the term to power director clutch. It had a high and low speed with a neutral position. Both of them set ahead of the transmission in the case.
I've rebuilt both of them a LONG time ago! You had to shim the clutch packs. (wet clutches) This would have been in the 1970's and 1980's. My mind fades.