On Wed, 11 Oct 2017 13:02:29 +0000 (UTC)
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.

Have you looked at the old books via archive.com? Like:

https://archive.org/details/fivehundredseven00browiala

or maybe:

https://africastopover.com/user-grou...r-hiscox-down/

--
Leon Fisk
Grand Rapids MI/Zone 5b
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