US Patent No. 872,507, granted 3 December 1907 to Thomas Greenwood of Wolverley, near Kidderminster, England, for an improvement to wide looms that weave tufted or pile fabrics such as Royal Axminster or moquette carpets. The invention adds adjustable screw-threaded tie rods between the sliding knife boxes that cut the tuft yarns, so the sliding knives register accurately with the teeth of the long fixed cutter. Two sheets of drawings (Figs. 1-4) show the knife, knife boxes and tie rods, followed by the specification and a single claim.