US Patent No. 1,304,216, granted May 20, 1919 to Jasper H. Stanfield of Muskegon, Michigan, for an improved mat-weaving machine. The patent was assigned to Jesse B. Alton of Winnetka, Illinois. It consists of eight sheets of mechanical drawings followed by the specification. The specification describes the yarn-carrying tube, hooks that lift loops of 'plug' yarn between the warp strands, fingers that keep the upper warp in plane, the batten, shuttle mechanism, heddles, and the cams, gears and levers that drive them. It builds on the inventor's earlier co-pending application, Serial No. 845,388, filed in 1914.