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Skinner No. 43 chuck?

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  • Skinner No. 43 chuck?

    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?

    -brian
    -brian

    Hello, my name is brian and I'm a toolaholic.

  • #2
    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.
    Jim H.

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    • #3
      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.

      -brian
      -brian

      Hello, my name is brian and I'm a toolaholic.

      Comment


      • #4
        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.
        Jim H.

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