open sockets - any idea what these are?

[tool_scrounge]

I have been starring at these open type sockets in garage for many years now. The box full I have fit hex nuts from about 1" to 3" as shown in the photos. The labeling on one of the sockets reads:

"* MADE IN U.S.A. 2062 T-A-C-2 3/8 PAT. PEND. *"

I have been unable to find anything with that or similar part number on google.

Does anyone know what brand they are or what type of wrench fits them?

Thanks

 

[krusty the clown]

they are parts of a tubing appliance corp crowsfoot.

scroll down this page...
http://home.comcast.net/~alloy-artifacts/proto-empire.html

 

[cruiser808]

they are parts of a tubing appliance corp crowsfoot.

scroll down this page...
http://home.comcast.net/~alloy-artifacts/proto-empire.html

+1 on Krusty's assessment. Proto was a leader in TAC socket sets.

 

[tool_scrounge]

Thanks for the information. I was thinking TAC was part of the part number. All the ones I see of the web are the ratcheting type that use standard square socket drives. I am trying to imaging what wrenches this one uses, as the cylindrical part is different sized on all of them.