REMOVABLE MULLION ASSEMBLY

A removable mullion assembly comprises a fitting attached in the door opening for receiving an end of the mullion. The fitting houses a locking mechanism for selectively holding the mullion in place in the fitting. The locking mechanism comprises a latch bolt which in an extended position engages the end of the mullion and secures the mullion in the fitting. A key-operated mechanism, such as a cylinder lock, is operatively connected to the bolt for moving the latch bolt to the retracted position in response to turning the key in the cylinder. An actuating element is also provided which is activated by the end of the mullion as the mullion enters the retaining element for moving the bolt to the retracted position. The locking mechanism may further comprise a blocking element to block movement of the latch bolt from the extended position. The blocking element may be moved to the non-blocking position as the mullion is inserted into the retaining element by a release lever which is actuated by the end of the mullion or in response to turning the key in the cylinder. The new fitting allows the mullion to be mounted to the top fitting and in the door opening without the need for latch or lock components in the mullion. Having the lock mechanism permanently mounted in the fitting prevents damage and contamination to the components thereof when the mullion is removed and laid on the floor.