#850: Rotordoor

I’ve occasionally found, when moving furniture from room to room, that having a door with a fixed hinge position is annoying.

Today’s invention allows a door to be reversed, from left-hinged to right-hinged, by sliding the hinge points along rails embedded in the bottom and top of the door frame (Hinge ‘a’ slides to location ‘b’ whilst ‘c’ remains the door handle’s position).