User:B137/All Crop harvester

All-Crop Harvester, or All-Crop Combine, was the name of tractor-drawn, PTO-driven combine harvesters made by Allis-Chalmers from the mid 1930s to the early 1960s. Aside from small grains, these harvesters were able to harvest some flowers, as well as various grass and legume crops for seed.

The first combines under that name, the All-Crop 60, had a 60 inch, sickle-bar cutting head, and the popular Model 66 had a 66 inch cutting head. By the time the Model 72 replaced the 66 in 1960, about 300,000 had been built.

Many of these units are still in working condition, and they are well-known for their dependability and low maintenance; however, as they are quite small machines, they are not practical on today's large farms.

All-Crop 40
Specifically designed for the Allis Chalmers Model B and C tractors, this model had a 40-inch cut and could harvest approximately one acre per hour. Produced from 1938 to 1940; only about 15,000 made.

All-Crop 60
Five foot (60-inch) cut; replaced flat belt with Texrope V-belt system. Produced from 1935 to 1949, with over 100,000 produced, this was by far the most popular All-Crop model. Harry C. Merritt and Charles J. Scranton each earned the prestigious Cyrus Hall McCormick Medal of the American Society of Agricultural Engineers for their work on the design of this machine.