A two die chuck

This unusual 3" chuck was originally supplied with my German Pittler lathe from 1895, the catalogue lists it as a two die chuck.

The makers mark is a crown but not sure who the maker was if anyone knows? the only other marking on it is 1" so it's imperial as is the other 3 jaw chuck supplied as standard but made by Cushman USA

Edited By vic newey on 25/11/2022 11:15:03

I have seen that mark before and have a faint feeling that it is a government mark.

Hello Vic,

I recall Crown supplied chucks to Myford for their early ML 1-3 lathes, the nose thread changed in size and pitch for the ML4, one of which my father bought in 1945

It may not of course be the same maker but the coincidence in activity is striking

Regards Brian

That style of chuck has been discussed here at least twice before:

https://www.model-engineer.co.uk/forums/postings.asp?th=175124

https://www.model-engineer.co.uk/forums/postings.asp?th=158954

I had a smaller version with my first lathe. An excellent chuck as I recall. Only snag is that on very small drills (and they will grip down to zero) the jaw will deflect the dril; just needs care tightening on small stuff.

Definitely a keeper.

Martin

----------------------------------------------------------------

It seems to be the same type, however I did search first and no threads come up for "two die chuck" (other than mine now)

Mine is as supplied with a backplate threaded 8tpi for the lathe mandrel

Edited By vic newey on 25/11/2022 14:00:47

I have a Pratt 2 JAW chuck which is similar but the back end is thinned down. "No8 Empire chuck"
In the first link Addy posted a Drummond catalogue print which has a bell chuck - sort of 4 jaw in its day. I have one of those too.

I had a thread regarding a smaller version which was laying about at the museum, unfortunately even after buying a suitable Morse taper to chuck adaptor, it didn't run very well and it has been consigned to the bits box. Also Crown brand.

Edited By old mart on 25/11/2022 15:29:35

I have a smaller version with a BSA three rifle logo stamped on.

Frank

That'll be the Bantam size.

Clearly, I was wrong!

FWIW, here are two examples of the items faulty recollection of which misled me:

Does anyone still use these?

Ega Yes, I do. Also outside ones and Odd Legs

Roy