Allis B drawbar

The crescent (curved) drawbar is standard. All of my tractors have one of these.

The one (ASAE?) mentioned is a triangular plate that sticks out behind the crescent. Usually these have rigid supports up to the the big angle iron fender braces. This is similar to riding mower hitches. This is very handy for towing tongue euqipped devices when the tractor has equipment that uses the main drawbar on it (like the belly mounted sickle mower). It extends the hitch point rearward and centered, which can help the PTO driveline angles. I suspect, as noted earlier, it alighns the posiiton of the hitch with the ASAE PTO dirveline mounting recommendations, on a tractor that was designed before the agreements. I have seen pictures of these but never a real one, they look like they probably would bend under heavy tongue loads and probably many were scrapped.

The other one is a swinging version. It starts with the crescent similar to the base, then has a strap concoction that locates the pull point of the swinging tongue forward of the normal swing point. The cushion blocks on mine are wood! Thus the hitch point be repositioned in a tighter arc just rearward of the main hitch. These are light duty and can be bent (pulled out) by too heavy a load or a sudden jolt. I have seen these on several C's but only one on a B (and I have it!).