Unknown tool

[GrottoParticipant @grotto]

A large foundry/engineering company is closing down, and I bought a few hundred kilos of stuff from the demolition guys.

included was this tool, which looks like a knurling tool to fit in the tail stock, but I've not seen one before. I got two, one smaller than the other. Both are MT3 or MT4 so won’t fit my lathe, but I’ll hang onto them as I may get a larger lathe at some point.

Was really eerie wandering around the place (a few acres of factory). No lights, most stuff gone, just the furnaces. Conveyors, molds. and a bunch of bits and pieces. Going back tomorrow with a torch to see what else I can find

[GrottoParticipant @grotto]

[JohnFParticipant @johnf59703]

I would agree a knurling tool but have never seen one like it before, it appears the nut? on the adjusting lever in the rear slot allows size adjustment ?

Where's the factory? Can we all come ? !!!!

John

[GrottoParticipant @grotto]

All welcome, but may take awhile to get here (it’s in NZ).

[Andy CarruthersParticipant @andycarruthers33275]

Let's hope it isn't British Steel, Scunthorpe, on my doorstep, but I work in London!

[GrottoParticipant @grotto]

Just cleaned all the gunk off it and answered my own question.

It's marked “Concentric Knurling Tool” No makers name, just patent & serial numbers.

unfortunately the Morse taper is part of the tool, I was hoping I may be able to remove it and fit an MT2.

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Grotto, you can always buy an MT2 to MT3 extension socket **LINK** but it will take up a little of space, so will depend on what length of bed you have.

Regards Nick.

[HopperParticipant @hopper]

Looks like the type of thing could have been used on a capstan lathe for production work, bit like a Coventry die head. Looks very handy though. You could probably set it up in the four jaw with a tailstock centre in place and turn that taper down to MT2. Often such shanks are not hardened.

[not done it yetParticipant @notdoneityet]

Posted by Grotto on 23/05/201

Going back tomorrow with a torch to see what else I can find

Is that at night? Or a cutting torch? Or just dim and dark hidey-holes?

Just asking…..

[GrottoParticipant @grotto]

Posted by not done it yet on 23/05/2019 15:13:24:

Posted by Grotto on 23/05/201

Going back tomorrow with a torch to see what else I can find

Is that at night? Or a cutting torch? Or just dim and dark hidey-holes?

Just asking…..

Hmm, hadn’t thought about a night trip, would be cheaper but not by much (I reckon I’m only paying cents per kilo).

The power has been disconnected so it's all pretty dark, was using my phone for light yesterday. A cutting torch could be useful but there’s enough manageable stuff around to avoid cutting, although the surface plate I grabbed would have been around 60 kilos.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Grotto on 23/05/2019 10:25:17:

Just cleaned all the gunk off it and answered my own question.

It's marked “Concentric Knurling Tool” No makers name, just patent & serial numbers.

.

Patent number, please …

MichaelG.

[GrottoParticipant @grotto]

Patent no. 55237

[John OlsenParticipant @johnolsen79199]

So whereabouts in NZ??? I'm in Cambridge myself….

John

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Grotto on 23/05/2019 21:47:15:

Patent no. 55237

.

Sorry … haven't found it yet

Will try again tomorrow

MichaelG.

.

Edit: Whilst searching, I did find this rather interesting one:

https://patentimages.storage.googleapis.com/7b/5e/63/988073949f1185/US2684604.pdf

Edited By Michael Gilligan on 23/05/2019 22:46:08

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