Cool picture! It is a International Harvester Co., the set up probably worked good and got lot more done in a day! Looks like they clamped the left T drive wheel to the heavy drive wheel .
We live on a farm that has been in the family since 1868, and yes we had one........pulled by horses my Dad should have thought of this!
All that work and ingenuity to put it together! And with a 20hp engine! Amazing!
It looks like there's an auxiliary transmission shifter just in front of the gas tank. I wonder what gear combination and speed was considered "normal" for working purposes.
I sent this to my brother who is an engineer at Case IH, and he stated that this is indeed an IH corn binder and that he has still seen them in use by the Amish in some of the fields around where he works.
Here is a video of one in action (non-T mounted) with a good explanation of how it works.