Ferguson and Ford we working together in this years I believe?
pto gizmo - Harry Ferguson
TO30 with a hand clutch on the PTO - Harry Ferguson
7th post down says:
Note the extra long lever coming out of the left side pto shifter cover on this 8N.
This is the extremely rare Sherman live pto conversion for the 8N. The lever operates
a manual clutch pack between the transmission and the rear end pinion gear. This allowed
the tractor operator to start up normally with the pto engaged and then use the long lever
to disengage the tractor drive and stop the tractor without stopping the pto. If you use the
lever for stopping and starting and left the regular foot clutch alone you had a "live" pto.