Help identifying a C-Clamp

[skorper]

Hello gentlemen. In digging thru my boxes of estate sale purchases that I've aquired over the years I found this C-clamp. It says "JH Williams" "Drop forged in USA" on it and on the other side it is marked "Agrippa No. 108". I am surmising that Agrippa was the name given to the line of Williams clamps, but I'm at a loss as to what the unique configuration is for, at the end. It is obviously designed for a specific job or to go together with a specific jig or other tool of some sort. I've never seen another one designed this way.

Does anybody know what it is for?

 

[JASTECH]

Hmm.....

 

[AZ_Catskinner]

Agrippa was Williams' machine tool line back in the day. I've seen a bunch of stuff like that in the back corners of the locomotive shop and the Reduction Works machine shop, but I have no clue what the hell it was intended for.

 

[adamsredlines]

Some discussion about that term in a thread I had a while back....
http://garagejournal.com/forum/showthread.php?t=116888