Patent ID: 6131966
Filing Date: 2000-10-17
Classification: E05B,Y10S,Y10T

Abstract:
A dogging mechanism for a mortise lock, the mortise lock having at least two operative modes, a normal mode and a dogged mode, the mortise lock including a moveable locking link, a latchbolt moveable between an extended position and a retracted position, the latchbolt including a latchbolt bar having a bolt slide thereon, the dogging mechanism comprising:a holdback dog including a slide means, mounted on the moveable locking link, for permitting the holdback dog to slide relative to the moveable locking link, the holdback dog being moveable between an upper position distal the bolt slide and a lower position where the holdback dog is in contacting engagement with the bolt slide when the latchbolt is in the retracted position, whereby when the mortise lock is in:a) the dogged mode, the holdback dog engages a first side of the bolt slide, thereby retaining the latchbolt in the retracted position, andb) the normal mode, the holdback dog engages a second side of the bolt slide, the slide means permitting the holdback dog to move with the latchbolt when the latchbolt is moved between the extended positions and the retracted positions.