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Interesting mechanism at N.A.M.E.S.

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  • Interesting mechanism at N.A.M.E.S.

    I saw a mechanism I'd never seen before at the N.A.M.E.S. show, but neglected to inquire about it. It's now stuck in my mind and I'm wondering what it's called.

    I saw it on several different models so apparently it was quite common in antiquity.

    It's a right angle drive, with four 90-degree "tubes" between the driving shaft and driven shaft. The tubes are free to slide in and out of one hub, and free to "spin" on the other hub.

    The net effect, besides rotary motion, is like an optical illusion as it turns.

    I'd like to learn more about it.

    Can anyone identify this for me
    Last edited by jmarkwolf; 04-22-2013, 10:39 AM.

  • #2
    Sounds like a governor to me.

    Brian
    OPEN EYES, OPEN EARS, OPEN MIND

    THINK HARDER

    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    MY NAME IS BRIAN AND I AM A TOOLOHOLIC

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    • #3
      Found a modern example on Youtube:

      http://www.youtube.com/watch?v=fz1rmuaZZOM

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      • #4
        Google "elbow engine".

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        • #5
          There is a 90 degree drive I can think of where rods or tubes bent at 90 degrees can slide in and out and turn in 2 hubs with close fitting holes. I was not able to come up with the name of it. You guys are fast! Beat me to it.
          Last edited by Toolguy; 04-22-2013, 11:08 AM.

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          • #6
            Another video:

            http://www.youtube.com/watch?v=3eFmMi4eHCI

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            • #7
              Early on, miter gears were difficult to make. Some genius came up with this elbow design that provided right-angle drive without gearing.
              ----------
              Try to make a living, not a killing. -- Utah Phillips
              Don't believe everything you know. -- Bumper sticker
              Everybody is ignorant, only on different subjects. -- Will Rogers
              There are lots of people who mistake their imagination for their memory. - Josh Billings
              Law of Logical Argument - Anything is possible if you don't know what you are talking about.
              Don't own anything you have to feed or paint. - Hood River Blackie

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              • #8
                Originally posted by SGW View Post
                Early on, miter gears were difficult to make. Some genius came up with this elbow design that provided right-angle drive without gearing.
                Machining miter gears is easier than making a working elbow engine, in my view.

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                • #9
                  Oops - wrong mechanism. This is the one I was thinking about: https://www.youtube.com/watch?v=S_lG1Irw9BE and https://www.youtube.com/watch?v=S_lG1Irw9BE
                  My old mentor, Dan Fay, told me about its being an easier-to-construct substitute for miter gears. I wouldn't be surprised though if the elbow design was a similar attempt.
                  ----------
                  Try to make a living, not a killing. -- Utah Phillips
                  Don't believe everything you know. -- Bumper sticker
                  Everybody is ignorant, only on different subjects. -- Will Rogers
                  There are lots of people who mistake their imagination for their memory. - Josh Billings
                  Law of Logical Argument - Anything is possible if you don't know what you are talking about.
                  Don't own anything you have to feed or paint. - Hood River Blackie

                  Comment


                  • #10
                    I made a steam engine in high school.. Pretty cool - Never did make the fly wheel for it.. The plans for it where found in an old popular mechanics iirc.

                    https://www.youtube.com/watch?v=A4u-Aj5Iwo0

                    sam

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                    • #11
                      Originally posted by SGW View Post
                      Boy I wish people that take pictures and post them would TRY to use enough
                      light to make the things visible on my monitor. :-(
                      Those two are so dark it's just a black hole.
                      ...lew...

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                      • #12
                        Sorry -- I duplicated the link. The 2nd link was supposed to be a different video that was more clear. Try this: http://www.youtube.com/watch?v=PsUF1wP22iM

                        (I agree with you about the darkness of the first video. FWIW, having been to the Yankee Steam-Up and seen that exact mechanism in operation, it's so black with grease and oil it's difficult to pick out the detail standing right next to it.)
                        ----------
                        Try to make a living, not a killing. -- Utah Phillips
                        Don't believe everything you know. -- Bumper sticker
                        Everybody is ignorant, only on different subjects. -- Will Rogers
                        There are lots of people who mistake their imagination for their memory. - Josh Billings
                        Law of Logical Argument - Anything is possible if you don't know what you are talking about.
                        Don't own anything you have to feed or paint. - Hood River Blackie

                        Comment


                        • #13
                          You're nobody in the model engine-making community until you've made your own elbow engine.



                          The hand-bent double-ended pistons have to have an exact ninety degree bend or the whole thing will bind up.
                          Regards, Marv

                          Home Shop Freeware - Tools for People Who Build Things
                          http://www.myvirtualnetwork.com/mklotz

                          Location: LA, CA, USA

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                          • #14
                            Forgot I have some other pictures..



                            While the other high school kid where making a hammer in shop class... It has been kicking around for a good 20 years.

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