Its something like the old joysticks that controlled models used to have.
Gimbals I think they used to be called.
One ring inside the other with right angled pins that rotated with the
stick sticking out of the middle at 90 degrees.

Very few would go 180 degrees though before hitting the frame.

Brian

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From the Sofa of Brian Gaff Reply address is active
wrote in message ...
Tim Lamb wrote:
In message , writes
Nick Odell wrote:
On Sat, 26 Apr 2014 11:00:59 +0100, wrote:

I want a joint that can be flexed in two directions at right angles
to
each other. In principle I could do this using two hinges with one
plate of one hinge fixed at right angles to one plate of the other.

Is there a 'ready made' piece of hardware that can do this? If so,
what is it called?

I don't want a ball joint because movement in all directions isn't
necessary and a ball joint generally won't allow 90 degrees (or more)
of flexion like a hinge.

The device I want would allow me to fix a bar to a surface and swing
it 180 degrees in two planes (at 90 degrees to each other).

Like a saloon door hinge? Sometimes called a cafe door hinge?

No, that's just 180 degrees in one plane, I want 180 degrees in two
planes. I probably don't really need the full 180 degrees, just the
sort of arc a normal hinge can manage, but in two planes.

er... Can't you just secure 2 conventional hinges together?

I did say in my original description "... I could do this using two
hinges with one plate of one hinge fixed at right angles to one plate
of the other", I was just looking/hoping for a neater solution.

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Chris Green
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