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The small farmer's best friend

01/22/2014 @ 2:53pm

Tractor development grew by leaps and bounds in the 1920s and 1930s, as droves of draft animals were herded off to the glue factory by engine-hungry farmers. A sure sign of the times, tractor sales had skyrocketed from around 250,000 in the early 1920s to well over 900,000 by 1930. Left in the dust of this stampede toward mechanized horsepower were small farms that couldn’t afford the large tractors of the time.

Ever the entrepreneur, Allis-Chalmers Tractor Division Manager Harry Merritt saw an opportunity in small farms. He ordered some market research, which readily confirmed that fact. Allis-Chalmers marketers estimated that approximately 4 million small operators wanted affordable horsepower.


Affordability was key

In short order, Allis-Chalmers made small farmers’ dreams come true by creating a one-row tractor that wasn’t just affordable – it was also very modern. Selling for just under $500 (which Allis-Chalmers estimated to be the cost of keeping a team of horses fed for a year) when it was introduced in 1937, the Model B was anything but bare bones.

Torque-tube pioneer

The 13-hp. machine (it would later be upgraded to 20 hp.) was fully modern. It featured a highly stylized wasp-waist torque-tube chassis that offered outstanding visibility. This carried high appeal for truck farmers and nursery growers. That particular design, an industry first, would prove to be popular, because other manufacturers began employing that approach in their tractor designs, harvesting Allis-Chalmers a windfall of patent fees.


Clearance was key

The B’s arched front axle and high rear-axle clearance was unlike anything on the market at the time. These features allowed the tractor to readily navigate high-growing crops common on truck farms and vineyards.

The tractor could be ordered with a host of modern advances like an optional hydraulic lift. In fact, the B would be the first Allis-Chalmers tractor to offer hydraulics.

Noted industrial designer Brooks Stevens also gave the B an appealing look with a stylized hood, fuel tank, and fenders that helped promote the tractor as state of the art. Those looks – plus a four-cylinder engine, three-speed transmission, and a wide array of implements – didn’t just catch the eye of small farms, the tractor caught on in huge fashion.

Allis-Chalmers knew what it was doing engineering-wise with the Model B. It had to be narrow (to run one-row equipment) and to offer high clearance. In the former case, the tractor’s front axle could be set for a 43- or 50-inch tread. For $20 extra, farmers could get an adjustable front axle with 10 spacing increments ranging from 38 to 60 inches. The rear wheel tread was changed with adjusting rims or clamps and reversing rear wheels.

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