Profile: Ellis Mfg. Co. supplies shoring and concrete forming materials. Our products include screw jacks, hydraulic bottle jacks, clamps, splicers and jack wrenches. We serve the mining and construction industries. Our jack wrench grips the wood of the lower shore member & the upper shore member is raised about one inch per stroke through the lifting pressure of the cam. Our purlin splicer is designed to reduce time spent cutting stringers/purlins to specific length.