Today my father in law texted me said he had a old vice if I wanted it its mine I dont know the brand or weight. The leg is broken how would you go about fixing that?

Have it welded

Weight isn't really important, jaw width is.

Have a replacement leg welded on it's THE traditional repair. Nice selection of Father in Law, my compliments.

Frosty The Lucky.

I'd be inclined to get a welding shop to weld it up for me, their welds would be better than mine. 

 

Looks like a decent vice though. 

Andy

Just a thought: That leg appears to be threaded. Could this be a wagon tongue vice missing its lower mounting bracket? The proportions look a little different than other post vices. 

 

Edit: A quick google search of images of wagon vices seems to suggest that yours is, in fact, a wagon vice, but with a different mounting bracket. 

Edited July 26, 201510 yr by Ridgewayforge

Would it still be good for blacksmithing? How would I mount it?

weld a leg on and mount it like a leg vise.

The price is right,   Put it to work!   (you dont need to weld a leg on it,  You could but you could also just slip a chunk of pipe over the stub and run it to the ground or support it some other way.  If you mounted it well it would work fine for as small as it is.)

Yes, It would still be useful as a black smithing vise. The wagon vises were just more mobile than a traditional post vise. Still just as functional though. You could mount using the original bottom mount, or weld on/cobble on a leg. The choice is yours. what is the Jaw size?

Does NOT look like a wagon vise at all to me; just a typical postvise with a common break---many of the post vises had a forge weld at that location and so failure is not unknown.  Not knowing YOUR access to tools or YOUR skills make it hard to suggest what YOU should do.  Most recent one I worked on had a greenstick break forming at that location.  As a smithing meeting we forged out a strip of wrought iron and spiral wound it around the crack and forge welded it into a solid band.  If you have little access or tools I would just slip a piece of blackpipe around the nub that would go to the ground plate and be a prosthetic leg for your leg vise

 

looks similar to me

different mount

 

Edited July 26, 201510 yr by wpearson