Can anyone identify what the heck this is

[erikohio]

I got this is a recent box I bought. The part number sr10 comes up as a stud puller from mac. Plus it's not like one I've ever seen. The anvil insert is 1/2" on the bottom. There is an off center hole bored it's opposite, it has a through hole like for a t-bar, but it's alot bigger Than macs 1/2" t-bar, then it has a small diameter hole, (I haven't sized it yet, but I'm guessing 1/4-20) that's threaded on the side that is positioned to not go through into the vertical bore. Also the fact mac is in quotations ( "mac" sr10) I did a short look over my other mac tools just say mac not aquotes. Maybe the tool is called a macs. But I don't know, this is why I'm asking here lol. d0 z

 

[MR.X]

It is a stud puller. Should have 2 diff size removable wedges you put together and slide down in the hole at the end and a use set screw ( goes in that that little hole on the side) to holds wedges in the body when in storage. When in use, pick appropriate wedge, slide in larger side hole and place end hole over stud and turn with 1/2" drive tool.

 

[erikohio]

It is a stud puller. Should have 2 diff size removable wedges you put together and slide down in the hole at the end and a use set screw ( goes in that that little hole on the side) to holds wedges in the body when in storage. When in use, pick appropriate wedge, slide in larger side hole and place end hole over stud and turn with 1/2" drive tool.

Why doesnt it look nothing like the model that comes up with that number. I can't find this version anywhere. I do have the wedges because that was my first thought, aside from the set screw I didn't know. I could swear it doesn't go into the bore

 

[MR.X]

My guess wouldn't be any better than yours.....offered that style for a short period and used the same tool#? Anyway, you could pull up a 40's era Plomb tool catalog online. They offered that same style for quite awhile.

 

[Marsim]

Proto 4515 stud puller

 

[Private Lugnutz]

I can't find this version anywhere.

Bottom of page 50 in the 1951 catalog.

 

[Ricky Joe]

Plomb and Proto made three versions of that. The 4515 did not have a set screw, but a pin with a detent ball. The 4520 had a set screw, or bolt. Both of those were 1/2” drive. They also made a 3/4” drive model. The wedges almost needed three hands to make them work. Herbrand improved on the design with a square hole for the wedges, which somewhat kept them from fishing around in use.