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Wooden Propeller ID help

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  • Wooden Propeller ID help

    I recently acquired another wooden propeller. The info stamped into it is as follows. I am pretty certain that it is a Curtiss Jenny toothpick propeller.

    100" tip to tip
    SC 11478
    1488
    8-4 d-5 0 P
    OX 5

    There is also a small propeller with a U S B 20 A stamped in the blades.

    The decals on the propeller are long gone. Only a image of the shape remains. Can any one identify the Mfg, from the shape of the old decal?
    Attached Files
    Last edited by Airplanedoc; 05-02-2020, 10:29 PM.

  • #2
    It may well have been manufactured for a JN4, but there's nothing I can see that clearly establishes that. It obviously was made for use on an OX5 engine, and the diameter is consistent with use on a Jenny, but the OX5 was also used on a lot of other aircraft as well.

    I recognize the shape of the decal but I'll have to look through some old documents to see if I can find an intact one.

    Can you include a photo of the entire propeller?

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    • #3
      I added a couple more pics in the first post.

      Thanks

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      • #4
        It may be a Flottorp decal. That's the closest match I've found, and I've seen other props manufactured by them that were used on OX5s.
        Attached Files

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        • #5
          Thanks, I had only come across the oval logo. Any thoughts on the 4 blade propeller stamp?

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          • #6
            The four blade stamp is an Army inspection stamp, and three of the blades hold one of the letters "U S A". The "SC" in the serial number stands for "Signal Corps", which goes along with the four blade stamp.

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