When I was just a kid, many years ago, our neighbor had an International model 76 combine and a Farmall 300 tractor, which me and my brothers thought must be the biggest tractor in the world because my daddy and grandfather had 2 Farmall C tractors. He used to combine our wheat, and most everybody else's in the area, because most of the farmers around would sow a few acres of wheat, or barley, or oats, so it wouldn't be cost effective to buy a combine to thresh 2 acres of wheat every year. So our neighbor would combine it for them, when he could get to it, because he had the only combine around.
He had the kind you had to ride on and fill the bags and tie them, then dump them off the platform so they could be loaded onto a truck, or trailer, or wagon. Somebody had to ride that combine behind that tractor all day, in the dust and heat. We used to like to get to ride it- all we did was hand the man that knew what he was doing the bags, or a piece of twine that we pre-cut to tie the bags with, and we thought it was fun, because we were kids. His looked like this, but I couldn't find any pictures of the one that had the platform that you had to ride, all the pictures showed a bin.
Then after my Daddy bought a 5000 Ford tractor, he bought a combine too. You didn't have to ride it because it had a bin that held 26 bushels, but where the other combine never stopped, we had to stop when the bin was full and fill bags one at a time, because everybody still wanted their wheat in sacks. This combine didn't have the canvas belt to bring the wheat up, it had an auger. But the best thing was the hydraulic grain head. You had to turn a crank on that 76 to raise or lower the grain head, but the 80 had a cylinder underneath to raise and lower it by moving a lever on the tractor. It was the cat's ass when you got into wheat that had blown down. I combined a lot of grain with that unit. It looked like this-