Latching assembly with panic release

作者: Desmond E. C. Webster

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摘要: A latching assembly having a retractable latch bolt and slide bar which retracts the by moving either forwardly or rearwardly from an intermediate position. The has rotatably mounted locking rod that rotates 90° between unlocking is arranged with "panic release" system, in its locked position, it possible to push "inside" button cylinder so as move at least partially released position permit be retracted. Thus, can retracted inside location whether but cannot outside when set

参考文章(2)
Webster Desmond Edward Charles, Closure fastening device ,(1957)
Henry W Rollins, Control for door lock set ,(1969)