(Jimmy of the Clue Crew indicates a door frame at Mount Vernon, VA.)  The detail-oriented Washington even chose Mount Vernon's moldings, which depicted tools to symbolize farming & this type of leaf for national strength
Unidirectional 
leaves can be of the anchored group type in which the jamb leaf is anchored at 
the... [DOC] [TLE] Four-leaf revolving door K41 - BLASI DOOR SYSTEMS  MORE ... [PAR] The K41 four-leaf revolver from our series ROTATION can be provided in many 
variations.