Door construction for glasshouses

Claim 1

A DOOR CONSTRUCTION COMPRISING: A PAIR OF SPACED-APART ELONGATED VERTICAL POSTS DEFINING THE SIDES OF A DOOR OPENING, SAID POSTS HAVING SUBSTANTIALLY PARALLEL FIRST FLANGES WHICH EXTEND TRANSVERSELY INWARDLY IN THE SAME DIRECTION AWAY FROM THE GENERAL PLANE OF SAID DOOR OPENING; A DOOR MOUNTED BETWEEN SAID POSTS AND HAVING A PAIR OF SUBSTANTIALLY L-SHAPED VERTICAL SIDE MEMBERS DISPOSED ADJACENT SAID POSTS, SAID SIDE MEMBERS HAVING SUBSTANTIALLY PARALLEL ARMS WHICH EXTEND TRANSVERSELY INWARDLY IN THE SAME DIRECTION AWAY FROM THE GENERAL PLANE OF SAID DOOR AND WHICH ARE SUBSTANTIALLY PARALLEL WITH SAID FIRST FLANGES, SAID SIDE MEMBERS HAVING BASES WHICH EXTEND TOWARD EACH OTHER IN THE GENERAL PLANE OF SAID DOOR, SAID DOOR HAVING A PLURALITY OF SUBSTANTIALLY HORIZONTALLY EXTENDING VERTICALLY SPACEDAPART GLAZING BARS EXTENDING AND SECURED TO SAID SIDE MEMBERS, SAID GLAZING BARS HAVING BASES WHOSE ENDS ARE OVERLAPPED WITH AND ARE SECURED TO THE BASES OF SAID SIDE MEMBERS, SAID GLAZING BARS HAVING HORIZONTAL WEBS EXTENDING TRANSVERSELY INWARDLY AWAY FROM SAID GLAZING BAR BASES AND RETAINING MEMBERS EXTENDING FROM SAID GLAZING BAR WEBS RETAINING BACK TOWARD SAID GLAZING BAR BASES, SAID RETAINING MEMBERS TERMINATING IN SUBSTANTIALLY THE SAME VERTICAL PLANE; CLOSURE PANELS EXTENDING BETWEEN ADJACENT GLAZING BARS AND BEING DISPOSED AT THEIR UPPER AND LOWER EDGES BETWEEN THE ENDS OF SAID RETAINING MEMBERS AND SAID GLAZING BAR BASES; THE FLANGE ON ONE OF SAID DOOR POSTS AND THE ARM OF THE DOOR SIDE MEMBER ADJACENT THERETO HAVING ENLARGED PARTIALLY CYLINDRICAL INNER ENDS WHICH ARE DISPOSED IN SIDE-BY-SIDE RELATION; AND AN ELONGATED HINGE MEMBER HAVING TWO VERTICAL GROOVES OF PARTIALLY CYLINDRICAL CROSS SECTION FORMED THEREIN, SAID GROOVES BEING POSITIONED IN SIDE-BY-SIDE RELATION AND OPENING THE SAME DIRECTION, SAID ENLARGED INNER ENDS BEING RECEIVED INTO AND RETAINED WITHIN SAID GROOVES SO THAT THE DOOR CAN PIVOT WITH RESPECT TO SAID ONE POST.