A short article from Master Weaver (No. 56, March 1961) on using shed regulators with four-shaft counterbalanced looms. It explains how the regulator lets such a loom handle balanced tie-ups, six-treadle tie-ups, and skeleton tie-ups by converting it into a reversed jack-type loom with spring-raised shafts. It describes the setup with an added top roller, a lath, and screen door springs with adjustable cords, notes by-pass cords for when the regulator is not used, and mentions cost and a commercial maker, Nilus Leclerc Inc. A line diagram illustrates the mechanism.