| 摘要 |
A keyboard having magnetically actuated reed switches and interposers swingable between the switches and adjacent magnets for opening and closing the switches in response to key-operated mechanism. Each interposer is supported from a pair of spaced shafts which constitute a bail assembly, the spaced shafts being operable in rotary fashion about a common center, and toothed racks are carried between the shafts and engageable therewith to provide interlocking means for the keyboard. This interlocking means is of the "non-entering" type realizable by cooperation of the shafts with the racks being slidable therebetween, wherein, with one key depressed, depression of another key tends to restore the first-mentioned key.
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