Ventilating window structures

Claim 1

A WINDOW STRUCTURE COMPRISING A PLURALITY OF WALL FRAMING MEMBERS ADAPTED TO PROVIDE A SUBSTANTIALLY RECTANGULAR WINDOW OPENING, A WINDOW FRAME WITHIN SAID OPENING AND PROVIDING SPACES BETWEEN THE WALL FRAMING MEMBERS AND THE WINDOW FRAME, MEANS FOR PIVOTING THE WINDOW FRAME OUT OF THE PLANE OF THE WINDOW OPENING, A PAIR OF OUTER CAPPING STRIPS, A PAIR OF INNER CAPPING STRIPS, SAID OUTER AND INNER CAPPING STRIPS BEING DISPLACEABLY SUPPORTED ON THE WALL FRAMING IN THE SPACE BETWEEN THE WINDOW FRAME AND THE WALL FRAME, AND MEANS FOR SELECTIVELY DISPLACING THE CAPPING STRIPS TO A POSITION IN WHICH SAID CAPPING STRIPS ARE IN SEALABLE CONTACT WITH THE WINDOW FRAME AND TO A RETRACTED POSITION WHEREIN SAID CAPPING STRIPS ARE DISPLACED FROM THE SPACE BETWEEN THE WINDOW FRAME AND THE WALL FRAME TO PERMIT THE PIVOTAL MOTION OF THE WINDOW FRAME, THE LATTER SAID MEANS COMPRISING A HANDLE, A PLATE MEMBER PIVOTALLY SUPPORTED ON ONE OF THE WALL FRAMING MEMBERS AND CONNECTED TO THE INNER AND OUTER CAPPING STRIPS ASSOCIATED WITH SAID ONE WALL FRAMING MEMBER, SAID PLATE MEMBER BEING PROVIDED WITH A SLOT, A HANDLE HAVING OPPOSITE ENDS, A PIN AT ONE OF SAID ENDS OF SAID HANDLE AND SLIDABLY ENGAGED IN SAID SLOT, SAID HANDLE BEING PIVOTALLY SUPPORTED FROM SAID ONE WALL FRAME MEMBER INTERMEDIATE ITS SAID ENDS SO THAT SAID PIN IS MOVABLE IN SAID SLOT BETWEEN FIRST AND SECOND POSITIONS UPON MOVEMENT OF SAID HANDLE, SAID CAPPING STRIPS BEING IN SEALING ENGAGEMENT WITH SAID WINDOW FRAME IN ONE OF SAID POSITIONS OF THE PIN IN THE SLOT AND DISPLACED FROM SAID SPACE TO PERMIT PIVOTING OF THE WINDOW FRAME WITH THE PIN IN THE OTHER OF SAID POSITIONS IN THE SLOT.