deskthority

Muirium wrote: 29 Apr 2021, 13:22 Kinda cool actually. But yeah, the long centre on the caps looks like a plunger and those clips around it are very reminiscent of rubberdomes like on Apple's early 2000s desktop boards. Haven't seen 4 of them per cap, however. Seems well engineered!

The cap profile is interesting too.

John Doe wrote: 30 Apr 2021, 19:28 Anyone could confirm the switches? Seems kinda magnetic or related of sort?

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PlacaFromHell wrote: 30 Apr 2021, 20:22

John Doe wrote: 30 Apr 2021, 19:28 Anyone could confirm the switches? Seems kinda magnetic or related of sort?

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This one? viewtopic.php?t=15010

Lalaland124 wrote: 09 May 2021, 15:47 Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

John Doe wrote: 09 May 2021, 15:58

Lalaland124 wrote: 09 May 2021, 15:47 Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

Cherry?
https://www.ebay.com/itm/233507535820

Lalaland124 wrote: 09 May 2021, 16:45

John Doe wrote: 09 May 2021, 15:58

Lalaland124 wrote: 09 May 2021, 15:47 Unfortunately I don't have much info but it's from an old Roseville Operations Computer with integrated keyboard.

Cherry?
https://www.ebay.com/itm/233507535820

True! Looks very similar, thx!

• The calculator is made by brother in japan and has the following model no.: 121DN
• Switch cannot be newer than 1977, since the calculator design is from 1977
• Switch is linear
• Switch feels damped like Cherry MX Silent Red
• Switch smoothness feels a bit more smooth than a cherry mx red, almost like a pre-lubed Kailh speed silver
  If I put the keypad/keyboard next to my ear, I can hear some friction like cherry mx or other mechanical switches
• Switch weighting is around 40gf to 50gf I think.
• Switch is normally pressed and the external coil spring pushes the slider with the keycap out, so it comes depressed.
• Switch mount is not MX compatible
• Switch mount is vintage T mount alps compatible

John Doe wrote: 14 May 2021, 13:21 I got this pad today, but being confused abt what this is, and even no idea about the key switch, need help here.

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Lalaland124 wrote: 18 May 2021, 13:09 Does Anyone know what switch type this is? It's from a data general board but looks very weird.

John Doe wrote: 18 May 2021, 13:15

Lalaland124 wrote: 18 May 2021, 13:09 Does Anyone know what switch type this is? It's from a data general board but looks very weird.

wiki/Fujitsu_Peerless

zrrion wrote: 21 Jun 2021, 02:03 Those are ALPS SKFF switches. that explains why caps on later Silver Reed typewriters are compatible with that mount

Bjerrk wrote: 29 Apr 2021, 13:04 Anyone have any idea about this funky looking switch in a Philips keyboard?

Looks like a rubber dome + plunger, but the design is interesting ...

soyuz wrote: 21 Jun 2021, 12:52

Bjerrk wrote: 29 Apr 2021, 13:04 Anyone have any idea about this funky looking switch in a Philips keyboard?

Looks like a rubber dome + plunger, but the design is interesting ...

Yeah, I have one of these too. Probably one of the nicer domes I've used (I think the fact the membrane is metal-backed helps with this a lot)

schwi wrote: 28 Jun 2021, 10:11 has anyone seen anything like this?
these are the actual switches themselves - but the top of the case has stem adapters mounted to it, which press on the actual switch, which seem to be microswitch sd mount..

the board is for a terminal which seems to come up under IP-1548/G

if there are any pictures that would be helpful, let me know. i can provide more.