Abstract:
A door hinge for recessed installation between an edge of a door panel and a door jamb has first and second leaf assemblies that each form a cavity and are recessed in the door-panel edge and in the door jamb and a pair of U-section links pivoted centrally together about a center axis and each having a first end and a second end engaged in the cavities of the respective first and second leaf assemblies. The first end of one of the links and the second end of the other link are pivoted about respective vertical axes fixed in the respective leaf assemblies and the second end of the one link and the first end of the other link are pivotal about another respective vertical axis and horizontally shiftable in a respective guide of the respective leaf assemblies.
Abstract:
A concealed door hinge has first and second leaf assemblies fittable into respective mortises in an edge of the door and in the door frame. The first leaf assembly has a body, mounting tabs at ends of the body and securable to the door frame or to an edge of the door, and an insert shiftable in the body in a first horizontal direction perpendicular to a face of the assembly. The body is also shiftable relative to the tabs in a second horizontal direction transverse to the horizontal direction and parallel to the face. A swivel mechanism is connected between the second leaf assembly and the insert of the assembly. Adjusters engaged between the insert, the body, and the tabs can relatively secure the insert and body in any of a plurality of positions offset relative to one another in the horizontal directions.