[TheForge] Cool kinematic web site

[Bruce Freeman]

I don't quite follow the S24 linkage.  I'm not sure what is stationary
and what mobile.  This looks rather like an "inversion" of a linkage
commonly referred to at the "Watt SLM," but I'm not sure of that.  In
that linkage, two short arms pivot on bearings mounted at different
vertical levels to a frame.  The ends of each are connected to opposite
ends of a long arm.  The centerpoint of the long arm describes a
straight line for a portion of the angular motion of each short arm.

Bruce
NJ

>>> frosty at customcpu.com 2/3/2005 4:32:39 PM >>>
Yep, that's the one I was thinking of too.

S5 (Evans) looks most like the Grasshopper as far as I've looked.

The S24 Watt linkage is basically the same thing but linked(?) on both
sides 
of the swingarm center pivots. I don't know how that improved the
action but 
evidently Watt thought so. <grin>

Frosty
------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.


----- Original Message ----- 
From: "Bruce Freeman" <FREEMAB at pt.fdah.com>
To: <theforge at mailman.qth.net>
Sent: Thursday, February 03, 2005 11:50 AM
Subject: Re: [TheForge] Cool kinematic web site


> I'm referring to S35 on that website.  An intriguing motion, but too
> complex.
>
> Bruce
> NJ
>
>>>> frosty at customcpu.com 2/3/2005 3:40:44 PM >>>
> <snip>
>
> PeaucUellier (mythspelled for the pun. <grin>) has a few linkage
> devices but
> I think I know which one you mean. The 8 link yes? It is appealing
but
> looks
> awfully fragile for a blacksmith. Maybe a blacksmith's clock? <grin>
>
> Fun stuff for sure. I'll let Heath over at the Artmetal Sandbox know
> the URL
> is being enjoyed here.
>
> Frosty
> ------------------------<snip>
>>>
>>> http://kmoddl.library.cornell.edu/index.php 
> <snip>
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