Typewriting machines – Key-board or key lever-actuating mechanism – For foreign-language typewriter
Patent
1980-06-12
1982-06-01
Sewell, Paul T.
Typewriting machines
Key-board or key lever-actuating mechanism
For foreign-language typewriter
400486, 400489, B41J 510
Patent
active
043324932
ABSTRACT:
Typewriter keyboards for English and German are disclosed that assign vowels and consonants to keys on both sides of the keyboard to maximize the number of successive keystrokes by the same hand and to minimize the number of successive keystrokes by the same finger. Three high frequency vowels and two high frequency consonants are assigned to home keys that lie directly under the fingers of the left hand. Three high frequency consonants, a high frequency vowel, and the space are assigned to home keys that lie directly under the fingers of the right hand. A single elevated case shift key is located on the left hand end of the lower letter key row. The elevated stroking surface of the carriage return key is located at the right hand ends of the lower letter key row and the home key row. Steeply inclined key tops slope down toward neighboring home keys to guide fingers to the proper home position and to facilitate actuating non-home keys.
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