MP Mower Pusher
Mower pushers are unusual enough, but this is one of only two I know of this design, because they would have been hopeless.
The rolls are live driven off the engine, with the large lever raised they rotate clear of the ground, when the lever is lowered so the whole pusher with weight of the operator is lowered to the ground.
Can you imagine the damage to the turf
Age
1920s
Exhibitor
Andrew Grout