Tornado shelter

A tornado shelter shaped essentially in the form of a rectangular parallelepiped comprising a rectangular horizontal top, a rectangular horizontal bottom disposed below and parallel to the top, a vertical forward end connected transversely to a pair of ends of the top and bottom, a vertical rear end connected transversely to a second pair of ends of the top and bottom opposite from said forward end, a pair of vertical side members connecting the top and the bottom on opposite sides thereof and extending longitudinally from the rear end to the front end, a substantially rectangular door frame connected to the top adjacent the front end, an access opening in the top communicating with the interior of the door frame, longitudinally extending tracks mounted in the door frame, a flat horizontally extending door adapted to be mounted in the door frame, the door having rollers thereon adapted to engage the tracks, the door being mounted in closed position over the opening in the top when the door is adjacent the front of the tornado shelter, a latch mechanism attached to the forward edge of the door for securing the door to the front end, a cover plate having vent holes therein covering the rear portion of the door frame, means for releasing the latch on the door and for rolling the door rearwardly into position underneath the cover plate and exposing the access opening in the top so that entry and egress can be achieved with respect to the tornado shelter.