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The M was the larger of the two prominent row crop tractors produced by IH from the late 1930s to the early 1950s, along with the Farmall H and its variants, yet could still use the same implements. [5] As with the other letter-series IH tractors, the M used a modular design that allowed assemblies to be removed and replaced as units.
The Farmall F-20 is a medium-sized two-plow row crop tractor produced by International Harvester under the Farmall brand from 1932 to 1939, with approximately 148,000 produced. It replaced the Farmall Regular, and was itself replaced in 1939 by the Farmall H.
The first 2-3 digits was the horsepower rating, and the last number was the number of cylinders, so a 1486 was rated 148 hp and had a 6 cyl. engine, while the 1468 had 146 hp and a v8 engine. In 1964, IH made its four-millionth tractor, an 806. In 1965, IH introduced its first 100 hp (75 kW) two-wheel-drive tractor, the 1206.
IH showed off their new 60 series of tractors: including the first of their kind, large six-cylinder 460 and 560 models. But the excitement caused by the new introduction was short-lived. The following June, IH recalled the 460, 560, and 660 tractors after reports of mechanical breakdown in the field.
IH capitalized on the shift, and the standard color for the Cub Lo-Boy and Cub changed from the familiar IH Red to Federal Yellow in 1960, with IH Red as an option. In 1963, International Harvester changed the grill of these tractors to a flat-grill style and dropped the Farmall name in favor of International. In 1981, the last production run ...
An experimental model was developed in 1920. By 1923, prototypes of the rear-wheel-drive tractor with narrow front wheels were working crops. Production began in 1924, with tractors selling for $825. Tractors were marketed with a range of attachments for various duties. A power take-off turning at 535 RPM was standard, along with a belt drum ...
[4] The Model A had a 20-pound stamped-steel disk on the left rear wheel and a 170-pound cast-iron disk on the right wheel; the right front wheel had a bolted on weight. The offset engine benefited front-mounted cultivators, compared with the towed equipment used by competing Ford-Ferguson tractors. [3]
The predecessor to the W-9 was the McCormick-Deering W-40, a bigger version of the International W-30 with a six-cylinder engine, which was itself a wide-front-axle version of the Farmall F-30. A diesel-engine version was available, the WD-40. Both tractors were also sold as industrial tractors, the I-30 and ID-30. Production ran from 1934 to 1940.