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
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.[1]
US patent 4653179A covers the manufacture of the contact module used in several Marquardt types including Series 6180.
Key feel
The keyfeel is similar to that of a Cherry MX Black, though it feels a bit stiffer and more wobbly.
Internals
See pictures.
Keyboards
The switch was found on an Olympia typewriter keyboard, probably from an Olympia Standard 200, Olympia Professional 220 or a similar model. [2]
Gallery
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
- ↑ Private correspondence with Marquardt
- ↑ Deskthority — Olympia Keyboard Switches
