So it was in July of 1918, during the last months of fighting in WW1, that Charles Lavers of Canada submitted his idea for quickly repairing steel axle wagons. The concept seemed to be particularly focused on military needs, especially those related to heavy gun limbers, ammunition vehicles and army escort wagons. Spelled out in the old government archives is the dual-use concept of employing a spare axle and spindle as a lifting jack to both repair and subsequently replace broken steel axles quickly. Purportedly, once a broken axle was raised, it could then be temporarily propped up, the lifting jack removed and re-used as a new axle section by clamping it in place over the broken axle. Further, each spindle was to be fitted with both right and left hand threads, thereby accommodating use on either side of the wagon.