Thread: 9 Lever Milners Trible Stump Safe Lock

I'd suggest that the three stumps would greatly reduce the chances of the bolt being punched. It would probably increase the dificulty in picking, too, since you would get differing feedback.

That's probably also a reason behind some levers having only one interaction, while the others have two or three. It might also prevent some decoder attacks.

Very nice locks.

Also the lock would have to be drilled three times ..

I have seen these fitted on Vault doors even with these shorter keys

Originally Posted by exspook

I have seen these fitted on Vault doors even with these shorter keys

That would have been a 'book quality' door. The real heavy doors used long detachable keys - by necessity :!:

The example I was thinking of had three locks each with a seperate 7-11 escutcheon and the door was only 25mm (one of those Old Inches) thick, with a grille gate on the inside
The back pan was a two manner to remove with massive threaded bolts

I have not seen these with detachable bits, do you have an image please?
Many thanks
Exspook

Not a great picture as I took this quite a few years ago ..

Thank you
I have seen these keys on CHUBB Channel locks (pipe key)and the key bit has a dovetail taper that holds it in place on the stem

Think I have one around will try and get some images

Thank you for the fast reply

I've seen those too. I suspect they post date these Milners and Chubb copied the design (nothing unusual there).

Back ground info on this lock please. What range of dates was this 3 stump lock manufactured? If I am right what I have so far is there was a 7 lever and a 9 lever. Was the 7 only used on certain containers and the 9 on others? Is there a listing of serial numbers? Is there a history of the company or the designer Benjamin Boyce of this lock?