C. Ken Cole

A Quick-Locking Jack


For a production of Moon Over Miami at the Yale Repertory Theatre, we devised a special stage jack to support an 8′ flat sitting on the back of a 4′ × 8′ oval wagon. See Figure 1. As seen from the side, the unit was an unsupported “L” and had to be secured so that the flat would not move when actors walked on the wagon. This meant that the jack had to lock into place in a plane that was perpendicular to the plane of the flat. In addition, limited backstage space made it essential that the jack be either removable or able to fold away so that the unit could store up against a wall.



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