Xerox 6060 keyboard - unknown clicky

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snuci
Vintage computer guy

19 Nov 2018, 00:51

Got this keyboard a little while ago. I am impressed at how clicky these min-domes are but I can't figure out what makes it click exactly. This is a great keyboard and I believe it is OEMed from Olivetti. I don't know who makes the keyboard mechanism/switches. It IS similar to one posted by Haata here but the key switches use different construction.
Xerox 6060 - front.JPG
Xerox 6060 - front
Xerox 6060 - front.JPG (1.54 MiB) Viewed 444 times
Xerox 6060 - rear.JPG
Xerox 6060 - rear
Xerox 6060 - rear.JPG (1.44 MiB) Viewed 444 times
Xerox 6060 - key caps removed.JPG
Xerox 6060 - key caps removed
Xerox 6060 - key caps removed.JPG (1.1 MiB) Viewed 444 times
Xerox 6060 - some key switches removed.JPG
Xerox 6060 - some key switches removed
Xerox 6060 - some key switches removed.JPG (1.27 MiB) Viewed 444 times
Xerox 6060 - mechanism top.JPG
Xerox 6060 - mechanism top
Xerox 6060 - mechanism top.JPG (1.29 MiB) Viewed 444 times
Xerox 6060 - mechanism bottom.JPG
Xerox 6060 - mechanism bottom
Xerox 6060 - mechanism bottom.JPG (1.59 MiB) Viewed 444 times
Xerox 6060 - key switches profile.JPG
Xerox 6060 - key switches profile
Xerox 6060 - key switches profile.JPG (1.76 MiB) Viewed 444 times
Xerox 6060 - key switch parts.JPG
Xerox 6060 - key switch parts
Xerox 6060 - key switch parts.JPG (606.45 KiB) Viewed 444 times
Xerox 6060 - key switch top.JPG
Xerox 6060 - key switch top
Xerox 6060 - key switch top.JPG (850.38 KiB) Viewed 444 times
Xerox 6060 - key switch bottom.JPG
Xerox 6060 - key switch bottom
Xerox 6060 - key switch bottom.JPG (854.95 KiB) Viewed 444 times
Xerox 6060 - key switch not pressed.JPG
Xerox 6060 - key switch not pressed
Xerox 6060 - key switch not pressed.JPG (544.86 KiB) Viewed 444 times
Xerox 6060 - key switch pressed.JPG
Xerox 6060 - key switch pressed
Xerox 6060 - key switch pressed.JPG (508.28 KiB) Viewed 444 times

User avatar
abrahamstechnology

19 Nov 2018, 00:57

The mechanism is similar to Fujitsu Peerless.

mcmaxmcmc

19 Nov 2018, 03:39

Olivetti Snap-action? wiki/Olivetti_snap_action

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snuci
Vintage computer guy

19 Nov 2018, 03:52

mcmaxmcmc wrote: Olivetti Snap-action? wiki/Olivetti_snap_action
No. That is what Haata's example has. They look identical from the top but not the bottom. The patent got me looking at other patents from Olivetti and you can see this particular switch in this patent: https://patents.google.com/patent/US4602138A/en

Findecanor

19 Nov 2018, 06:48

So, two variants of "Olivetti snap action" switches then. :)
It looks like the metal-dome variety already in the wiki works on the same principle. Like the Fujitsu Peerless, and the SMK typewriter keyboard I posted in late September: both of these are also lightly clicky: clicky but not loud.

I suspect that when the rubber dome buckles, the spring being released quickly, it is allowed to rebound — and it is when the spring rebounds against its new extreme that a collision happens that causes the sound.
Compare to pressing down a key at the edge of the keyboard and moving your finger sideways off the key: the key snaps up and makes a sound when it reaches the top: Imagine that the key is flipped over and your finger moving off the key is the rubber dome buckling.
Last edited by Findecanor on 19 Nov 2018, 10:39, edited 1 time in total.

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Chyros

19 Nov 2018, 07:11

Isn't that just Olivetti dome with slider? Oo

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