Univac F-1355-00 Keyboard, 1971
Univac F-1355-00 Keyboard, year 1971
Univac Magnetic Separation Switch
The feel of typing on this keyboard seems to work like mechanically enhanced gravity, that is, when a key is pressed, some latch got unhooked, and the key fell by gravity. Really nice feel to press the keys, almost like playing a game.
This predates IBM buckling spring and beam spring mechanism. The key switch it uses, the Univac Magnetic Separation Switch, is patented in 1970.
This is a capacitive keying device suitable for use in an electronic keyboard. Depression of the key drives a stem which stresses a spring beyond the release threshold of a magnetic latch. A projectile is then fired, impacting upon a flexible sheet capacitor electrode. The resulting electrode deflection causes a momentary increase in capacitive coupling.
[from patent https://www.google.com/patents/US3696908]
About the Company Univac
UNIVAC (Universal Automatic Computer) is a line of electronic digital stored-program computers starting with the products of the Eckert–Mauchly Computer Corporation. Later the name was applied to a division of the Remington Rand company and successor organizations.
The BINAC, built by the Eckert–Mauchly Computer Corporation, was the first general-purpose computer for commercial use. The descendants of the later UNIVAC 1107 continue today as products of the Unisys company.
[2017-11-13 Wikipedia UNIVAC]
I saw this keyboard in San Francisco Bay Area Keyboard Meetup 2017-11. San Francisco Bay Area Keyboard Meetup 2017-11 Impressions
The owner of this keyboard is Jacob Alexander (aka haata)
more photos flickr
If you have a question, put $5 at patreon and message me.