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A two die chuck

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vic newey25/11/2022 11:08:09
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347 forum posts
173 photos

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

2 die chuck.jpg

2 die chuck2.jpg2 die chuck1.jpg

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

ega25/11/2022 11:29:10
2805 forum posts
219 photos

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

Brian Wood25/11/2022 11:32:30
2742 forum posts
39 photos

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

DC31k25/11/2022 11:53:50
1186 forum posts
11 photos

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

Martin Johnson 125/11/2022 12:33:53
320 forum posts
1 photos

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

vic newey25/11/2022 13:48:16
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347 forum posts
173 photos
Posted by DC31k on 25/11/2022 11:53:50:

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

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

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

Bazyle25/11/2022 14:06:59
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6956 forum posts
229 photos

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.

old mart25/11/2022 15:28:06
4655 forum posts
304 photos

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.

 

 

_igp2827.jpg

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

bricky25/11/2022 16:17:16
627 forum posts
72 photos

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

Frank

Tom Sheppard25/11/2022 16:42:54
47 forum posts

That'll be the Bantam size.

ega26/11/2022 14:28:16
2805 forum posts
219 photos
Posted by ega on 25/11/2022 11:29:10:

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

Clearly, I was wrong!

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

dscn2234.jpg

dscn2235.jpg

Does anyone still use these?

roy entwistle26/11/2022 15:28:17
1716 forum posts

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

Roy

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