Marquardt Two Fingers Typewriter switch
 | |
| Manufacturer | Marquardt |
|---|---|
| Switch type | Linear |
| Sense method | Metal leaf |
| Actuation force | unknown |
| Keycap mount | Marquardt typewriter mount |
| Patents | US4653179A (1985) |
History[edit | edit source]
The Marquardt Two Fingers Typewriter Switch is a linear switch that was developed by the German electronics company Marquardt. According to Marquardt, this series was specifically developed for Olympia; no data remains on this product range.<ref name="marquardt-c" />
US patent 4653179A covers the manufacture of the contact module used in several Marquardt types including Series 6180.
Key feel[edit | edit source]
The keyfeel is similar to that of a Cherry MX Black, though it feels a bit stiffer and more wobbly.
Internals[edit | edit source]
See pictures.
Keyboards[edit | edit source]
The switch was found on an Olympia typewriter keyboard, probably from an Olympia Standard 200, Olympia Professional 220 or a similar model. <ref name="thread-olympia-halvar"/>
Gallery[edit | edit source]
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Linear typewriter switch -
Plate mounted on Olympia typewriter keyboard -
Keycap -
Keycap mount -
Front side (towards the user) -
Right side -
Back side (towards the screen) -
Left side -
Bottom with two connectors and two unused connector holes -
Top with the Marquardt logo -
Opening the switch module -
Slider -
Slider -
Spring and lever -
Lever from the side; the slider slides down on the right hand side of this, while the left hand side closes the contact between the leaves. -
Leaves, back side -
Leaves, front side -
Top part of the switch module case -
Top part of the switch module case -
Bottom part of the case, with spring, lever and contacts -
Bottom part of the case, with spring, lever and contacts -
Bottom part of the case, with lever and contacts -
Bottom part of the case, with lever and contacts -
Bottom part of the case, lever laid down to show mechanism -
Top part of the case with slider, spring and lever -
Top part of the case with slider, spring and lever
References[edit | edit source]
<references> <ref name="thread-olympia-halvar">Deskthority — Olympia Keyboard Switches</ref> <ref name="marquardt-c">Private correspondence with Marquardt</ref> </references>
