What is this tool?

[LRHartford]

Just go this at an estate sale -- many tools from a woodworker. The Cylinder is about 2" long and 9/16" in diameter. As you can see, the bolt part will slide up and down inside the cylinder and the two outside prongs on the other end move with it. The rectangular center prong doesn't move in relation to the cylinder. Turning the wing nut then pulls the two outside prongs back, as if to extract something. Anyone know what this is for?

 

[Jasonb]

It looks like some form of puller for small bearings/bushes.

Push the split end into the bearing like the photo on the left, tighten the wing nut which makes teh two outer prongs expand as they are pulled up the central one. This will then grip the bearing and yo can pull it out.

Jason

 

[mattylad]

It's called a "Watchamacallit" or "Thingymabob", used to thingy the doodah when wotsitsnaming it.

 

[xerxes]

From the pictures it looks like a pin vice, used for holding small parts. Try putting a small diameter drill bit between the jaws and tightening the wing nut.

 

[Jasonb]

Def not a pin vice as the two outer parts move apart as they are pulled over the central prong.

And the small vices with a wing nut have it on the side not end BTW

Jason

 

[Hitachimad]

They look like a form of hole clamp, used in sheet metal working, temporary fixings before rivets are put in.
Cleco clmps are normally used with a plier type tool, to remove install, these look like a simple hand operated version.

The centre comes up allowing the lump on the ends to push together through a hole, then screw down to push them apart, stopping the parts moving around.

 

[kevindgas]

look like some sort of tensioning device other than that no idea

interesting knurling on the outer part indicating grip of some sort

 

[Stivino]

It looks like it's for tensioning fence wire. If not fence wire then it's for tensioning something similar.

 

[wilhelm]

Its called a "skin peg" .other names are available but I call it that. (gripper pin..)

Its used by sheetmetal workers on aircraft. drill a hole through two sheets of ally, and you use them to hold the skin together, where you only have access from outside.

sizes 3/32 ,1/8, 5/32, 1/4 etc ....

 

[ColJack]

cleco's are the modern ( or maybe DIY ) equivalent..

kind of like temporary pop rivets...

 

[wotan]

Just go this at an estate sale -- many tools from a woodworker. The Cylinder is about 2" long and 9/16" in diameter. As you can see, the bolt part will slide up and down inside the cylinder and the two outside prongs on the other end move with it. The rectangular center prong doesn't move in relation to the cylinder. Turning the wing nut then pulls the two outside prongs back, as if to extract something. Anyone know what this is for?

Skin pins used in the aircraft industry, used to align the panels when riveting pieces together.

Wotan