All-Crop Combines Designed for the Family Farm

The versatile Allis-Chalmers tow-behind All-Crop combine, advertised as providing an improved way of life for the farmer, found a ready market.

| May 2019

1936-all-crop-combine
The 1936 All-Crop Combine.

Allis-Chalmers entered the combine market in May 1931 with purchase of the Advance-Rumely Thresher Co. Rumely’s No. 2 and No. 3 prairie-type combines, with headers ranging from 10 to 20 feet, were still being produced when the Persian orange High-Speed combine was introduced in 1935.

This pull-type, PTO-driven, rubber-tired combine for the Midwest family farm could be powered by a 2-plow tractor and was advertised as “the successor to the binder.” It was initially called the High-Speed combine, but in the following year, the name was changed to All-Crop.

The cutting width was 60 inches with 66 inches between the crop dividers. A ground-driven 4-bat reel helped lay the crop onto a full-width canvas conveyor that fed the material in a thin, even layer to the 60-inch threshing cylinder. Reel height could be set with a rope to the tractor. The spring-balanced header height was adjustable with a lever to the tractor seat for cutting from 2 to 22 inches above the ground.



A unique 15-inch-diameter cylinder had eight rubber-coated angle bars that worked with a rubber-faced concave and rubber blocks to gently thresh the crop. This action, plus a variable-speed cylinder drive and the adjustable cylinder-to-concave clearance, permitted the successful harvesting of 70 crops.

speed-changer
(Left) V-belt deep in pulley groove for high cylinder speed. (Right) V-belt at outer rim of pulley for low cylinder speed.



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