what tool is this?

this tool came with a lathe that i bought a few months ago and i am trying to find out what it is used for?
I was told it is as a bell chuck but it looks like it was built to be placed in a chuck..
I'm starting to think it is some sort of dead centre

Lantern Chuck ? or parts of one
**LINK**

A bell chuck would be similar but the pins would be threaded bolts screwed in from the outside to clamp the work.

.

... and typically, there would be two sets of three.

I think Adrian's mystery item might well be a 'special' for holding some particular workpiece.

MichaelG.

Some kind of puller maybe?

Adrian.

Definitely more likely than any sort of chuck.

The (bent) coachbolt looks like it is used to push a spindle out of a gear/pulley/flange or whatever that is inserted in to the cup and then the three pegs installed to restrain the assembly being separated.

I've no idea why the pegs would be designed like that though, a plain pin would dork as well.

Ian P

Edited By Ian P on 02/01/2019 10:34:14

Work!  = work

Edited By Ian P on 02/01/2019 10:35:14

Could it be missing a tapered part that forces the pins out when the bolt is screwed in?

Martin C

Just because it is with the lathe doesn't mean it is any part of the lathe itself. Probably just some odd ball thing that was acquired in case it came in useful.......

Perhaps the part to be pulled has three (or six) round holes? The pegs could be inserted from outside and wired to hold them in place.

Brian

The manky coach-bolt, as an extraction screw, suggests that it was cobbled-together to do a job ... then put in the 'come-in-handy' drawer; never to be used again.

I expect that most of us have a few things in that category.

MichaelG.

.

An excellent hypothesis !!

MichaelG.

thank you everyone for the input.. yes I am now starting to think it was a puller or pusher for a one off job..
I will hang it from the wall just incase