Sequencing mechanism for shutting two-leaf doors - uses interconnection between door closing mechanisms with sliding members moving in guide channel

摘要

Each of the two door leaves has its own door closer mechanism (23,26) connected to a lever arm (24,25) which in turn is joined to the lintel of the door. The end of each lever is hinged to a slider (14,20) which moves along a guide channel (1) in the lintel. The slider for one of the door closers engages a stop mechanism in the guide channel. This may delay closing of this leaf until the other door has finished closing.