In the mid 60's I worked at a canning plant and drove an AC tractor with a similar arrangement. It had a skirt completely around it that was raised and lowered with the 3 point. We used it to push sweet corn off the unloading platform into the conveyor system that carried it into the plant.
Until then, all tractors were Steam and a bit dangerous and likely to start fires.
This one wasn't successful, but a few years later this model was the start for Waterloo Boy which was the start of John Deere Tractors when JD bought them.