US Patent 3,318,341 granted to Georges Nollet of Mouveaux, France, for a loom reversing means. It describes a way to shift the timing of the heald-driving sprocket relative to the loom sprocket, so a loom with a stationary weft supply outside the shed can run in reverse to unweave without the weft inserters entering a closed shed. Two embodiments are given, a pivoting lever with auxiliary sprockets and latch, and a differential bevel gear with an auxiliary motor, both with safety switches. The scan has three drawing sheets, the specification, 12 claims and the references cited.