An unusual clamp - what is it for?

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Forum topic by skruft posted 08-17-2012 01:02 AM 904 views 0 times favorited 10 replies Add to Favorites Watch
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8 posts in 1063 days

08-17-2012 01:02 AM

Normally I know the purpose of woodworking tools, but not of this odd clamp that I found in an old garage. I have not seen one before and wonder if anyone knows its purpose. I suspect it is for carpentry rather than fine woodworking.

At first I thought it might be one of the old attachments that was used to turn a 2×4 into a long panel clamp, but I have a few of those and they are different. This seems designed to clamp onto a board 1-1/2” wide with great force and then do something else, also with great force and with no concern about marring the wood. The “X” that is cast into each of the two clamp pads seems designed to dig into rather than protect the wood.

There are no markings except the “No. 1” and “1 1/2” shown in the photos.

10 replies so far

View Wdwerker's profile


333 posts in 1177 days

#1 posted 08-17-2012 01:14 AM

Seems like the intent is to grab this and push on that. I bet it could come in handy sooner or later if you can find it when you need it ( or even remember that you have it). <grin>

-- Fine Custom Woodwork since 1978

View Greg..the Cajun Wood Artist's profile

Greg..the Cajun Wood Artist

5675 posts in 2252 days

#2 posted 08-17-2012 01:35 AM

Slide it along a workbench and clamp it where you you need it.

-- Each step of every Wood Art project I design and build is considered my masterpieceā€¦ because I want the finished product to reflect the quality and creativeness of my work

View DIYaholic's profile


16937 posts in 1619 days

#3 posted 08-17-2012 01:57 AM

Could it possibly be a “wood stretcher”??? Lol.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View RussellAP's profile


3044 posts in 1230 days

#4 posted 08-17-2012 02:28 AM

It looks like something that might be used to pull a tenon out of a mortise.

-- A positive attitude will take you much further than positive thinking ever will.

View Smitty_Cabinetshop's profile


11651 posts in 1562 days

#5 posted 08-17-2012 02:38 AM

Got a pair of them!

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive

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655 posts in 2217 days

#6 posted 08-17-2012 02:39 AM

If you clamp this fixture onto the end of a 2×4 and nail a block onto the the opposite end of the 2×4 (at just a bit more than the width of the boards you wish to clamp) you have a wooden “bar clamp” of sorts.

Least ways, that’s my guess.


-- Dave; Lansing, Kansas

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8 posts in 1063 days

#7 posted 08-17-2012 02:42 AM

There’s always a chance that the famous carpenter Xavier used it to sign his work.

View shipwright's profile (online now)


5928 posts in 1742 days

#8 posted 08-17-2012 07:09 AM

I’ve never seen one but it would work very well in carvel boat building to clamp on to a rib and force a piece of planking down tight. We used another method involving wedges but this or something similar may have been it’s purpose.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees.

View derosa's profile


1567 posts in 1780 days

#9 posted 08-17-2012 07:29 AM

The crank handle looks exactly like the ones on my E.C. Sterns clamps from the 1800s. They also made a lot of other styles and after long searching I did one time find one of their clamp catalogs online. They were from Syracuse, NY to help with the search process.

-- --Rev. Russ in NY-- A posse ad esse

View Bluepine38's profile


3138 posts in 2029 days

#10 posted 08-17-2012 03:05 PM

It looks like it was made to clamp onto a joist and push a warped floor board into line for nailing or screwing
down. I could have used it when I was putting the deck boards down last week. Anyone working alone
would really appreciate it. The mark in the joist would not matter or show, and the mark on the side of the
board would be covered by the next board.

-- As ever, Gus-the 76 yr young apprentice carpenter

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