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. Started in 1853 manufacturing threshers and later moved on to steam engines. Allis-Chalmers Manufacturing Co. purchased Advance-Rumley in 1931. The company's main works would become what was later known as the "La Porte plant".