Tool Question- what are these?

[skysurfer]

These were in a box of junk someone was getting rid of.

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The largest one is 2.5" tall at the threads. Diameter of each is 5/8", 3/4", and 1". I'm thinking they're some sort of pipe flaring tool but I've never seen anything like them. The threads are spiral cut, the smallest one a standard 24 tpi but the others are slightly different and don't jive with anything on my thread gage.

 

[greencountry05]

Looks like an "item" out of retros toolbox lol......but seriously I have no idea.

 

[77 K20]

Kinda small- but the closest thing I have seen is for a threaded cone log splitter.

http://www.ebay.com/itm/spare-head-for-Extreme-Hard-Wood-Screw-Splitter-Cone-75-/321671320515?_trksid=p2141725.m3641.l6368

 

[CSFJ]

Could they be an old style of reemer?

 

[350runner]

Old style flare tool.

Sent from the dust in front of you!

 

[skysurfer]

That makes the most sense, but these would leave a pattern on the inside of the pipe so they couldn't be used for a compression fitting. Maybe if they were used to flare copper just enough to slip the same diameter pipe inside and then solder the two? Sort of a butt-weld without fittings? I have some copper pipe around here, I'll twist one in and see what it looks like.

 

[PrairieDrifter]

early form of an easy out??

 

[skysurfer]

Good guess, but the threads are not the reversed direction to be an easy out.

I'm thinking they might just be pipe plugs, but the taper is pretty extreme so they would only bite a couple of threads before locking up.

 

[Georgeb]

I think this is it. It's for industrial boiler service.

 

[Don5]

My dad says it is an old style reamer used in steam pipes. It is used to remove the inside flair of a cut steam pipe so the steam will roll. These are used to keep from reducing the flow of steam through the pipe.

 

[Georgeb]

Not sure its a reamer. The "threads on it don't appear to be cutters and it looks like it would draw into whatever you turn it into. The pipe reamer mentioned by Don5 should be more like this....

 

[skysurfer]

Well, it looks like that taper gage Georgeb posted. The guy that owned them (deceased) was an oil field worker for Shell so I was thinking oil patch, but his family history in this area goes back to the late 1800's so there's ranching equipment and a little bit of everything in the barn.

 

[DoubleDingo]

Those are neat.

 

[Don5]

Not sure its a reamer. The "threads on it don't appear to be cutters and it looks like it would draw into whatever you turn it into. The pipe reamer mentioned by Don5 should be more like this....

I thought they should be angled as well. In any event they make a good paperweight for the garage.

 

[skysurfer]

I posted these on the Garage Journal forum, (lots of smart old guys over there) but so far there's been no positive answers. Here's a couple of the more interesting guesses and something I wouldn't have thought of.

"They look similar to what was used for crack repair, you drill and thread in the tapered bolt, cut it off flush, then drill and thread in the next one right at the edge of the threads so it locks in with the first one."

"Since the threads are standard rotation they may be used for installing some kind of fitting that can't be gripped from the outside."