Thanks Harry. No this is home built. The first one i built had the table mounted to brackets like yours. Unfortunately osage orange splits much like locust and i had the same problem you are having.
The pics are just to show you what you can do to fix your problem. Get some heavy wall 1'' square tube and cut 4 pieces at 2'' 1/2 or 3'' long and weld them to the bottom flange. Drill them for a pin first then get the next size smaller square tubing that will slide into them. Cut your brackets flush with the edge of the table and weld the smaller tubing to the bracket that is still under the table.
You're too late by about 25 years . I had a good job in a agricultural equipment plant. I built my homebuilt there off of the (mostly) scrap pile. Were I still there, those tables would be on my splitter as of today noon . Don't even have a cheap welder these days. Doubt I could still see well enough to run a bead anymore.
Harry K