Lever 1 and link 2 turn independently of each other about fixed axis C. Latch 3 is connected by turning pair B to link 2 and, by the action of spring 5, snaps over stop d of lever 1. When lever 1 is turned clockwise, latch 3 is disengaged by stop b and link 2, being released, is turned together with latch 3 by flat spring 4 about axis C until it reaches stop a.
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