On 11-Oct-17 8:02 AM, unk wrote:
I have thought up a linkage than does straight-line motion.

It's not (as far as I can tell) like any of the examples on the net.

Are there others/other places to look as this one must have been thunk up
before.

Undoubtedly you'll find it or a close variant in one of Leonardo's
sketchbooks...

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