Bird Bellows, Crank and Bellows.

Fri, 5 Jun 2015

Next step in my experiments designing a bird box automata made from paper.

This time I'm driving the bellows from a crank handle via a bell crank linkage.

Instead of the single fold bellows I've gone for a three layer design. This should allow the bellows to open wider.

I've mounted the pipe inside the box. The box is slightly larger than the previous version and is flexing a little in use. It would probably benefit from some stiffening strips.


I've put together this twelve frame stop motion animation so you can see how it works. The crank and bell crank are clearly visible inside the box.
This design works well and is a fun little model. I'll probably be releasing it as a download – let me know if you would be interested in the comments below.
Next step is to link the tuneable pipe to the crank so that the pitch changes as the handle is turned.

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Comments (19)

  • maxlrainer June 5, 2015 at 2:13 pm

    And how I’m

    And how I'm interested!

    That's a brillant mechanism and every step of your development is worth to be built.

    Best wishes.

  • klesley June 5, 2015 at 3:18 pm

    Very interested in getting a

    Very interested in getting a downloadable version!

  • Gibby June 5, 2015 at 7:13 pm

    Very interested in

    Very interested in adownloadable version. This is such a unique and cool looking stand-alone piece.

  • lonmcclure June 5, 2015 at 7:16 pm

    Yes. D/L version please. I

    Yes. D/L version please. I like that you moved the flute inside!

  • bywater June 5, 2015 at 7:23 pm

    I so agree – very

    I so agree – very interested!!! Anything with bellows that makes sound is great!




  • gkloda June 5, 2015 at 7:45 pm

    Yes, please…

    Yes, please…

  • umehta June 5, 2015 at 9:09 pm

    Yes, interested.

    Yes, interested.

    • hugo leandro June 5, 2015 at 10:13 pm

      Yes, yes, downloadble,

      Yes, yes, downloadble, please, definitely.

  • bluewren63 June 5, 2015 at 10:22 pm

    Yes please!
    It’s summer break

    Yes please!

    It's summer break and this will be a fun project for the kids!

  • Ferlopag June 5, 2015 at 11:05 pm

    I think it’s a must to have.

    I think it's a must to have. My grandchildren are delighted with these fantastic mechanisms and each tiem they come home ask for the new one.

  • featherplume June 5, 2015 at 11:31 pm

    Interested ? And how !
    Is it

    Interested ? And how !

    Is it possible to change the sound of the pipe by changing the opening ?

    So we could build a little choir ? Fun in perspective…


  • lunchweek June 5, 2015 at 11:50 pm

    That looks great! Just a

    That looks great! Just a little question: After building the former bellow pipe, I've noticed it generates a much realistic bird sound when pushed (or even touched) randomly. Is is possible to make a more randomised mechanism, maybe with a crank slider or something?

    • umehta June 6, 2015 at 2:58 pm

      An answer to lunchweek’s

      An answer to lunchweek's question would be an engineering achievement but his forward looking suggestion is an interesting idea.

      • lunchweek June 6, 2015 at 4:48 pm

        Haha, I don’t mean ‘that’
        Haha, I don’t mean ‘that’ random 🙂

  • lynston June 6, 2015 at 11:13 am

    Yes Pleeeeze!

    Yes Pleeeeze!

  • G Hensler June 6, 2015 at 10:13 pm

    I would very much like to pay
    I would very much like to pay and download this great automata!

    • umehta June 7, 2015 at 12:59 pm

      Hello G Hensler,
      For the

      Hello G Hensler,

      For the members, the download is 100% free.

      • robives June 8, 2015 at 8:36 pm

        Thanks for your responses

        Thanks for your responses everybody! I'm working on a final design now and it will be on the site shortly. You can see some progress pics on my Instagram account

  • [email protected] June 8, 2015 at 11:05 pm

    I would be interested in

    I would be interested in having a download of this clever looking machine (in response to your asking).

Comments are closed.