Help Identifying a 3 jaw chuck make

I've been sorting through items I don't use any more. There is a 160mm 3 jaw obviously well made and bought from Graham Engineering of Alpine Brand fame some time ago when they were in West Bromwich. I bought it just before they started selling TOS so can't help wondering it's Polish.

Markings are unusual. There is a 0 opposite jaw slot 1 on the rim of the chuck by one of the key holes and the jaw slot numbers are stamped on the outer edge of the jaw slots at the bottom rather than on the rim. It's stamped 1511 90 and has an oiling point on it's face - unusual at the time. It's a bit of a chunky sort of chuck but not so much as some Bisons. Jaws are the normal range of width. I do have a TOS self centring 4 jaw and it too has the 0 and the jaw number markings in the same place.

Anyone any idea of who probably made it?

John

-

Still using the smaller one I had off them on my ML7 at the time now on rotary table permanent last 15 years used daily. Does have the oil point.

Bought another exactly the same about 15 years ago smallest could get on a 140 and M300, but this one has the Bison/Polish sticker and oil point at front. **LINK**
Soft jaws available from the place by Hockley flyover forget the name.

Just checked both have the gold over black sticker one with a bison animal and the name Bison.

> the place by Hockley flyover forget the name

Rotagrip. I used to drive past there every working day but only called in twice!

Neil

The "O" indicates the primary chuck key hole. Quite commonly used.

I'm pretty sure it's a Polish chuck as the people behind the counter knew me fairly well and would suggest the better stuff - interesting, some of it was old stock imported from India. They did starts selling branded TOS shortly after I bought it - I bought a self centring 4 jaw not long after. I'd guess they had been trying them out because as well as a lot of model engineers they also supplied a number of factories. There is an Indian Super 7 on ebay at the moment. I have heard that they were very good, several people wishing they had bought one, even the right kind of cast iron. Pass - I didn't. Long gone when I started on larger machines.

I've visited Rotagrip several times. He also sells on Ebay as fordeight. He tries. I know that from talking to him. These people do have their problems from time to time. I went in once and he was in a foul mood - some one had returned half a dozen chucks with stripped scrolls. I'd guess that he would change supplier or get it sorted out on the other hand I feel that who ever bought them for industrial use should have tried one first. Why aren't the materials used and treatment of the parts in them mentioned when they are sold? I hear from other sources that this sort of thing can vary from batch to batch on imports from China. Samples and the first order are always great. From reading posts on here about lathes - machining is great where it can be seen and etc. Even signs of a banana bed - if the person was testing it correctly.

John

-

I have a 4" / 100mm chuck of Polish manufacture which I believe I bought from Graham Engineering in the 1980s. It has a 1983 date code, and appears virtually identical to that on http://www.bison-bial.co.uk/lathe-chucks/3204-100 , including the Bison symbol, but with less other engraving on the front. Technical data is is available from a link on that page.

I still have the user instruction leaflet and the test card; if you wish I could scan a copy for you. It quotes a size range of 80 to 630mm, including your 160mm. The leaflet does not mention Bison by name, but includes the Bison symbol.

Martin

No that's ok Martin. I just want some reassurance that when I sell I wont be selling junk. It's from my Raglan days and didn't see much use. It's been stored for a long time in a poor choice of places - covered in dust and my wife used a mop and bucket on the floor around it from time to time. It's rather tarnished now. The reverse jaws are probably like new - when I find them.

John

-

That's the one Neil we had an engineering co in Key Hill Drive 150 yards away.

Graham Eng West Brom as used the Wolvo one as well did say at the time the chuck was Polish.
Knowing Polish of that era they made decent bearings.
If had to buy another chuck Bison would be on my list but don't look forward to forking out £650 at Rotagrip for a 6 jaw Bison. They don't like cold callers so send the nipper in.