The Advance-Rumely Company of La Porte, Indiana was an American pioneering producer of many types of agricultural machinery, most notably threshing machines and large tractors.

However, the origin of the two components of the corporate name—Advance Thresher Company and M. Rumely Company—were somewhat newer, though still long-lived in the agricultural equipment industry.

This operation had expanded by 1859 into the production of corn shellers and complete threshing machines powered by horses.

Following success in this new field, Meinrad then bought out his brother's portion of the business and incorporated it as the M. Rumely Company by 1887.

A further reorganization brought about the final Advance-Rumely Company by 1915, a move which both streamlined the organization and highlighted its famous forebears.

Despite all of the history and diversity in engineering acquired along with all of their corporate assets during the 1910s, most of this was left by the wayside as Advance-Rumely sought to fold everything under its new brand name or that of Rumely.

Allis-Chalmers was more interested in Advance-Rumely's line of threshing and harvesting machines (not to mention the sprawling plants that built them).