Thanks for the info. The part of the tuyere that shoots off at 90 degrees looks like it was hollow at one point, but its packed with refractory now. It also seems to be diverting the air from the blower to the outside of the ring and not the inside, probably also because its packed up. I'm thinking it might be best to try to take it out of there altogether. If I put refractory back in I foresee a huge mess. Any advice? I also stumbled upon this old catalogue from Buffalo Forge today and it sure looks like the forge on page 7 called the No. 3 Boilermakers' Forge is a match. Looking at the large gears and the lever location, all the mounting holes in my forge are starting to make sense. Those impressions on the bottom must be there for the gears to have clearance.