I've been looking through the vise thread. Lots of good work---thousands.
Turns out, the groove is for a pedal. If I yank on the handle (along the axis of the screw) the moving jaw pulls toward me.
They were sold prior to 2007 as T&O brand and you could get them from Penn and Travers. I...
Hello from central North Carolina. By way of introduction, here is an oddball vise that I picked up recently. Can't find anything about the brand. Have you heard of MFV? Do you recognize the castings?
Has quick-release jaws.
There's an odd groove in the screw shaft. The part...