| 摘要 |
Door latching apparatus includes a cylinder lock having a translatable rod, a spring-loaded dead bolt and linkage means coupling the rod to the dead bolt to cause alternate retraction and extension of the bolt in response to operation of the lock. The linkage means includes a reverse-curve arm pivotally mounted between, and pivotally connected to, the rod and to a push-button having an inclined surface adapted to urge against a corresponding inclined surface of the dead bolt. The lock is rendered substantially pick-proof by the inclusion therein of a bifurcated plug having separate and independent inner and outer portions.
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