I'd been looking for a drill chuck for my lathe, so when I found a nice one at
an estate sale last week I bought it. Unfortunately, it had no chuck key and
I've been unable to find one.

The engraving on the chuck says:

NO 14 S JACOBS SPIRAL GEAR CHUCK PAT FEB 17 '25

I've contacted Jacobs and they don't have parts for anything over 25 years
old.

If anyone has a key to fit this chuck that they don't need, please let me
know. The key shaft is 5/32" and as the chuck label states, the teeth are
curved.

I've tried using a key with straight teeth and it just doesn't work.


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It's turtles, all the way down