- Joined
- May 10, 2012
- Messages
- 995
This bevel gear drove the table lift on a 1924 Gould and Eberhardt 16" shaper. The PO (a machinery dealer) said he had bought it as part of a lot of macnhinery and it had been in a school before. From the shape of the machine, that doesn't surprise me, as there were sevearal things on it that were obiously damaged due to neglect and stupidity. This gear was one of them. There was only one tooth intact on it when I got it dissasembled. Luckily the mating gear was fine. This was the driven gear/leadnut combination that drove the cross slide and table up and down. I cleaned it, sandblasted it and then built up the teeth with a flux coated brazing rod. Since it had one tooth to go by, I was able to set it up in the lathe, indicate the compound to the angle of the tooth and cut the tops off to the right height. The rest was done in a tedious process of filing the teeth, fitting them in the cross slide with the mating gear (coated with dykem blue) and attempting to turn them. This process took about 2 hours to get them smooth. I have since reasembled the machine and they work quite well. I am fearful of putting to much oomph on them, as I don't know how they will hold up to abuse (the original didn'd fare well). You can see the original tooth on the right in the last picture