Rocker arms 1 and 2 of four-bar linkage ABCD turn about fixed axes A and D which belong to the automobile body. Link 3, to which door a is rigidly secured, is connected by turning pairs F and G to link 4 an connecting rod 5. Link 4 is connected by turning pair E to rocker arm 1. In the open position of the door, the mechanism is indexed by projection b of link 3 which enters a corresponding groove in the body. The door is shown in the open position in the left-hand drawing and in the closed position in the right-hand one.
$885$LW,FD$