Hyperbolic paraboloidal roof and method of making the same

Claim 1

A ROOF SUPPORTED ON TWO PAIRS OF INTERSECTING SIDELINEAR MEMBERS AT PAIRS OF DIAGONALLY OPPOSED HIGH CORNERS AND LOW CORNERS RESPECTIVELY, SAID ROOF HAVING A SUBSTANTIALLY HYPERBOLIC PARABOLOIDAL GENERAL SURFACE CONTAINING TWO SYSTEMS OF STRAIGHT LINES, EACH SYSTEM BEING PARALLEL TO A DIFFERENT DIRECTOR PLANE OF TWO DIRECTOR PLANES WHICH FORM AN ANGLE WITH EACH OTHER AND IN WHICH THE INTERSECTIONS OF THE LINE OF ONE OF SAID SYSTEMS WITH THE LINES OF THE OTHER OF SAID SYSTEMS ESTABLISH SAID GENERAL SURFACE OF SAID ROOF, SAID ROOF HAVING A PLURALITY OF INTEGRAL CONTINUOUS UNITED METAL SHEET PANELS WITH THEIR EDGES LYING IN PLANES WHICH ARE SUBSTANTIALLY PARALLEL TO A CENTRAL PLANE WHICH PASSES THROUGH SAID LOW CORNERS AND IS SUBSTANTIALLY PERPENDICULAR TO A LINE PASSING THROUGH SAID HIGH CORNERS, THE MAIN SURFACES OF SAID PANELS BEING OF CONTINUOUS LENGTH AND LYING SUBSTANTIALLY ALONG SAID HYPERBOLIC PARABOLOIDAL GENERAL SURFACE, AND THE ENDS OF SAID PANELS BEING SECURED TO SAID LINEAR MEMBERS SAID PANELS HAVING JOINT FORMING SIDE STRUCTURES INCLUDING INTEGRAL TRANSVERSE WALLS FACING THE OUTSIDE OF SAID ROOF WITH WATER SEALING MEANS AT THE EDGES OF SAID TRANSVERSE WALLS AND TERMINATING A SHORT DISTANCE FROM SAID LINEAR MEMBER TO PROVIDE DRAIN CHANNELS ALONG SAID SIDE LINEAR MEMBERS FROM SAID HIGH TO SAID LOW CORNERS.