| abstract | - Allis-Chalmers bought Ryan Manufacturing Co., a producer of road graders, and proceeded to offer a two-model grader line of “Speed Controls” in the hp (kW) No. 42 and the larger No. 54. Both models had a forward mounted gasoline engine. In 1950, Allis-Chalmers partnered with Tractomotive Corp., an auxiliary equipment manufacturer, to bring out the TL-10. The wheel loader was modeled after the success of Hough’s new wheel loader that featured a rear-engine design. The TL-10 wheel loader, however, was the first to incorporate torque-converter drive. Nevertheless, it still proved to be less sophisticated than Hough’s model. The partnership would yield a four-model line-up by 1955 but they failed to be a match for other models put out by Hough and Clark-Michigan. As a result, Allis-Chalmers never successfully secured a position in the wheel loader market. In 1959, it finally acquired Tractomotive Corp. and began to produce wheel loaders of a fully integrated design. Allis-Chalmers launched a new improved line of 6 articulated wheel loaders beginning with the TL-645 in 1964. A prototype of a hp (kW) HD-41 was a hit at the 1963 Road Show but production of the model would be put off for another eight years. In 1952 Allis-Chalmers took over the LaPlant-Choate Manufacturing Co. in order to enter the scraper business. LaPlant's existing scrapers were reintroduced as Allis-Chalmers TS-200 and TS-300. Buda Engine Co. was acquired in 1953 to supplement AC's engine business, and gradually the GM engines were phased out. This may have been spurned by GM's purchase of AC Construction's competitor Euclid.
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