Author Topic: IBM 73X3832 Pics (24 F-Key Rubber Dome)  (Read 9166 times)

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Offline lowpoly

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« on: Mon, 05 October 2009, 10:20:26 »
When I bought this I thought it would be a BS 'board. Turned out it wasn't. Plug is not ps/2.

Like my Symbolics 'board it was made by Micro Switch.

Keys are somewhat stiff.

Looks like Micro Switch (now?) belongs to Honeywell:

http://sensing.honeywell.com/1/4/6/5/1/3/index1.shtml























« Last Edit: Fri, 01 June 2018, 10:09:07 by lowpoly »

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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #1 on: Mon, 05 October 2009, 11:29:31 »
beautiful shots. thanks lowpoly :D

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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #2 on: Mon, 05 October 2009, 12:06:19 »
Quote from: ripster;123123
Yeah, the feet are just great.  I assume it doesn't move much on the desk.  MaxiSwitch needs to learn how to make smaller controller boards - that thing is huge!

Msiegel - would a Model F fit in that?

hmm... the model f pcb assembly is 45.25cm x 17.5cm, including the mounting tabs on its sides, and the attached controller card. removing the controller card and *its* mounting tabs, the assembly would be about 13cm wide.

i'll have to check the switch/key placement later. offhand, the spacing between key clusters looks good. it's likely that the rightmost column of the number pad would have to be removed :)

that does look like a really nice case :D
« Last Edit: Mon, 05 October 2009, 12:15:10 by msiegel »

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Offline microsoft windows

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« Reply #3 on: Mon, 05 October 2009, 14:47:37 »
I wonder if they can be changed to work with PC's like the terminal keyboards.
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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #4 on: Mon, 05 October 2009, 14:50:15 »
Quote from: microsoft windows;123188
I wonder if they can be changed to work with PC's like the terminal keyboards.


hmm, this might be a question for kishy :)

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Offline williamjoseph

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #5 on: Mon, 05 October 2009, 15:00:05 »
for some reason, a snazy, off color quote from Bender off of futurama seems like the right thing after seeing the inside of this keyboard.

Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #6 on: Mon, 05 October 2009, 15:02:38 »
Quote from: williamjoseph;123194
for some reason, a snazy, off color quote from Bender off of futurama seems like the right thing after seeing the inside of this keyboard.


"I didn't mean to say that the Enterprise should be hauling garbage. I meant to say that it should be hauled away AS garbage." -- Korax (The Trouble With Tribbles)


Just kidding!! XD

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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #7 on: Mon, 05 October 2009, 15:38:23 »
:D wow, fast work!

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Offline rdh

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #8 on: Mon, 05 October 2009, 15:49:37 »
Quote from: williamjoseph;123194
for some reason, a snazy, off color quote from Bender off of futurama seems like the right thing after seeing the inside of this keyboard.


Something about shiny metal backplates, maybe?
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Offline ch_123

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #9 on: Mon, 05 October 2009, 17:06:02 »
Micro-Switch... they made Hall-Effect switches did they not? They certainly make some pretty fancy stuff, and I doubt that they'd be the people to call if you needed rubber domes. In addition, it doesn't look the mechanism is big enough to accomodate a rubber dome. Until I see pics of a membrane, I'm assuming it's something fancy that just feels like a rubber dome...

Like a Topre =P

Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #10 on: Mon, 05 October 2009, 17:10:24 »
Quote from: ch_123;123218
Micro-Switch... they made Hall-Effect switches did they not? They certainly make some pretty fancy stuff, and I doubt that they'd be the people to call if you needed rubber domes. In addition, it doesn't look the mechanism is big enough to accomodate a rubber dome. Until I see pics of a membrane, I'm assuming it's something fancy that just feels like a rubber dome...

Like a Topre =P

*watches 3 units disappear off of ebay* ;)

save one for me guys :)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140333923993&ssPageName=ADME:B:WNASIF:US:1123

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Offline ch_123

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« Reply #11 on: Mon, 05 October 2009, 17:11:02 »
Not one that would fit into something that small.

Lowpoly: Is it a linear or tactile switch?

Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #12 on: Mon, 05 October 2009, 17:13:19 »
Quote from: kishy;123219
Good eye, there doesn't look to be enough room for the traditional rubber dome in there...it may be "ultra thin for her pleasure" though.

Was there ever...a "mini" buckling spring?

lexmark does have a patent on a low-profile buckling spring switch. the spring is mounted horizontally, iirc

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Offline rdh

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #13 on: Mon, 05 October 2009, 17:18:55 »
Quote from: msiegel;123223
lexmark does have a patent on a low-profile buckling spring switch. the spring is mounted horizontally, iirc


Did they ever build any?
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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #14 on: Mon, 05 October 2009, 17:22:37 »
Quote from: rdh;123227
Did they ever build any?


i don't know, but here's the patent:
http://www.google.com/patents/about?id=uZckAAAAEBAJ

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Offline ch_123

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #15 on: Mon, 05 October 2009, 17:24:06 »
IBM filed many many different keyswitch patents, very few of them got used. For one, if it was a Lexmark switch, why subcontract the manufacturing to a specialist manufacturer of specialized switches?

I'm betting that it's some sort of linear switch or another. Maybe not a hall effect one, but I'd be very surprised if that switch was a plain 'ole rubber dome.
« Last Edit: Mon, 05 October 2009, 17:28:00 by ch_123 »

Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #16 on: Mon, 05 October 2009, 17:26:30 »
we'll have to ask lowpoly to take a closer look, if he has time :)

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Offline lowpoly

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #17 on: Mon, 05 October 2009, 17:27:31 »
There's a rubber dome under the plunger. I can see it through holes in the construction that holds the plunger. There's some distance between the upper and the lower plate and it uses that space too.

Also in the pics you can see the membrane connectors.

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Offline msiegel

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #18 on: Mon, 05 October 2009, 17:29:07 »
aww, too bad :(

how much travel do the keys have? :)

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Offline rdh

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #19 on: Mon, 05 October 2009, 17:31:41 »
Quote from: msiegel;123228
i don't know, but here's the patent:
http://www.google.com/patents/about?id=uZckAAAAEBAJ


Neat.  

Looks kinda tricky to assemble, though possibly not much worse than current scissor-style laptop keyboards.
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Offline lowpoly

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #20 on: Mon, 05 October 2009, 17:31:57 »
Quote from: msiegel;123233
aww, too bad :(

how much travel do the keys have? :)
About 4mm. Can't measure that very well right now.

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Offline ch_123

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #21 on: Fri, 23 July 2010, 11:00:01 »
What's the date on the keyboard? Looks like 87 01, but I'm not sure.

It could be that after the Model M switchover, they just decided to switch to rubber domes instead of membrane buckling springs.

Offline microsoft windows

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« Reply #22 on: Fri, 23 July 2010, 11:07:49 »
I think that's actually a Model F. Those were (i believe) the rubber dome Model F's you asked me about earlier.
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Offline ch_123

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« Reply #23 on: Fri, 23 July 2010, 11:10:44 »
I know that. What's that got to do with what I'm saying?

Offline spolia optima

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #24 on: Sat, 24 July 2010, 19:08:14 »
I'd hit it
keyboards!

Offline microsoft windows

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« Reply #25 on: Sat, 24 July 2010, 19:09:35 »
It's about the same keyboard.
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Offline ch_123

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« Reply #26 on: Sat, 24 July 2010, 19:12:46 »
When IBM moved over to the Model M, most of the Model F keyboards for dedicated terminals were converted to use a membrane buckling spring mechanism and relabeled as Model Ms. In this case, it seems that for some reason or another, IBM decided to switch them to rubber domes instead.

Offline ch_123

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« Reply #27 on: Tue, 27 July 2010, 05:08:54 »
Ok, the specific terminal keyboards. I've seen Model M versions of the 3178 and 5290 terminal keyboards (and possibly others). They looked identical, but they just threw in new guts. Oh, and they didnt change the part numbers.

Then you have things like that 50 key POS board that had a Model F style internal assembly (metal upper and lower that slid into eachother instead of plastic rivet junk) but had a membrane inside.

Offline kishy

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #28 on: Sat, 12 November 2011, 21:54:08 »
In the last week or so I acquired a 73X3848 which is the same keyboard as the OP in this thread. It is also a Micro Switch rubber dome board and is designated 'Model 00'. There are individual domes for each key, along with a slider mechanism. The construction is exactly like a Model F but adapted to a rubber dome and membrane arrangement.

If anyone wants pics I can post them, or you can find them from my website.

Please note these keyboards do indeed use the same AT protocol and wide-spaced DIN connector as other familiar terminal Model M and F keyboards. This means they do work with existing converter projects, and in response to my earlier concerns in this thread about KBDID settings, there is a bank of DIP switches which should (though I haven't tested) do exactly that.
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Offline REVENGE

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IBM 73X3832 Pics (24 F-Key Rubber Dome)
« Reply #29 on: Sun, 13 November 2011, 05:15:13 »
Damn Honeywells, I see them everywhere!
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