Quote Originally Posted by Toolmaker51 View Post
Vise Frank S refers to is likely a "Cardinal Speed-Vise" With half nut about 3 or 4 diameters long, heat treated, and screwed to base casting.
I doubt one would strip under load like Tuomas's vise. And if it did, make a couple spares beforehand.
Yes that is exactly the vice I had, here is some pictures of one just like mine
Click image for larger version.  Name: s-l1600.jpg  Views: 512  Size: 184.0 KB  ID: 31993

Click image for larger version.  Name: s-l1600b.jpg  Views: 424  Size: 325.6 KB  ID: 31994

Click image for larger version.  Name: s-l1600e.jpg  Views: 418  Size: 202.5 KB  ID: 31995

Click image for larger version.  Name: s-l1600d.jpg  Views: 419  Size: 191.6 KB  ID: 31996