| 摘要 |
In typical crossbar switches, selection operators move flexible fingers to restricted areas within openings of selected operate cards, and subsequent operation of hold actuators against the fingers operate the selected cards. According to this disclosure, the ends of the flexible fingers that are to be engaged by operated selection operators are bent to function as levers that are rotated quite readily as a result of the twist of the long portions of the flexible fingers. The torsional spring characteristic provided by the levers permits the selection operators to operate fully during preselection without requiring much more than normal operating force.
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