View Full Version : Skinner No. 43 chuck?

04-09-2009, 12:28 PM
A friend showed me a Skinner "The Standard No. 43 Improved" chuck last night. I assumed that it would be used to drive a tap but wanted some more expert input. Here a couple of not very good pictures:
This is supposed to be a shot of the jaws. There are two opposing jaws that have matching angles on both jaws like a tap wrench. But the jaws angles aren't quite square.

This is a side view that shows the adjusting screw that brings the jaws in and out.

So what is it for exactly? Did I guess correctly?


04-09-2009, 12:37 PM
It is a drill chuck. They were relatively common, but the three jaw Jacobs style replaced them as they provide better gripping power and accuracy.

04-11-2009, 12:24 PM
Thanks Jim, do you suppose that it would work to hold taps? I can see why it wouldn't hold a drill very well. I had never seen a chuck like that before but I have seen some tap holders that were similar but had square jaws to fit the square on the tap.


04-11-2009, 01:21 PM
Take a look at the jaws, there were twist drills available with tapered square shanks like wood bits. Perhaps it was designed for them.

I see no reason it would not work with a tap if that is what you wanted to do with it.