Page 1 of 1

Guess the keyboard

Posted: 17 Feb 2012, 19:53
by Icarium
Okay, here are some pictures of a vintage switch.
switch1.JPG
switch1.JPG (250.03 KiB) Viewed 2114 times
switch2.JPG
switch2.JPG (233.53 KiB) Viewed 2114 times
switch3.JPG
switch3.JPG (171.42 KiB) Viewed 2114 times
The cap attaches to the little slider tube, the little pointy thingy goes inside the tube and the small spring on top of it. The large spring is on the outside surrounding everything.
When pressing you first compress the outer spring until some sort of well..not a bump more of a step, the point were it becomes harder to press once you start compressing the inner spring, I think. I haven't been able to measure the point of activation yet because of this:
switch4.JPG
switch4.JPG (160.72 KiB) Viewed 2114 times
Now, I'm not sure what kind of weird soldering technique that is.... :p

Anyway, does anybody know who made theses switches?

Posted: 17 Feb 2012, 19:57
by Mrinterface
Switch2.JPG looks like a Topre!
Torpe key
Torpe key
P1010937.JPG (21.38 KiB) Viewed 2109 times

Posted: 17 Feb 2012, 20:06
by Icarium
Hint: There is a date marking from '89. Not sure if that's the production date or something else...

BTW: If anybody knows how to open those "solder joints" I'd be interested. I've never seen something like that before.

Posted: 19 Feb 2012, 08:33
by sixty
Seen this before, but can't remember what it was. I think it was one of those low profile boards with a compact layout. Maybe an OKI switch.

Posted: 19 Feb 2012, 12:55
by Icarium
Oh, right I forgot to give a solution:

http://www.ebay.de/itm/140695064784?ssP ... 1439.l2649

I'd still like to know how to get the switches of if anybody has an idea...

Posted: 19 Feb 2012, 17:10
by ripster
Glad I didn't play.