Glazing stop

Claim 1

IN A WINDOW ASSEMBLY, A FIRST RIGID FRAME ELEMENT HAVING AN INWARDLY FACING WALL AND AN INWARDLY DIRECTED FLANGE, SAID WALL HAVING A RECESS THEREIN SPACED FORWARDLY OF SAID FLANGE, A WINDOW DISPOSED FORWARDLY OF AND AGAINST SAID FLANGE, A RESILIENT SEAL RECEIVED BETWEEN SAID FLANGE AND SAID WINDOW, A SECOND RIGID FRAME ELEMENT RECEIVED WITHIN SAID FIRST FRAME ELEMENT AND AGAINST SAID WINDOW, A RESILIENT SEAL RECEIVED BETWEEN SAID SECOND FRAME ELEMENT AND SAID WINDOW, SAID SECOND FRAME ELEMENT HAVING AN OUTWARDLY FACING INDENTATION, A PLURALITY OF SPRINGS MOUNTED WITHIN SAID INDENTATION EACH HAVING A LEG PROJECTING OUTWARD OF SAID INDENTATION AND FORWARDLY INTO SAID WALL RECESS, SAID WALL RECESS HAVING A FORWARD FACE WHICH SLOPES INWARDLY AND REARWARDLY FOR LOCKING SAID LEGS WITHIN SAID RECESS, SAID LEGS BEING RESILIENTLY DEPRESSABLE INTO SAID INDENTATION AND THE FORWARD PORTION OF SAID SECOND FRAME ELEMENT BEING POSITIONED WHOLLY INWARDLY OF THE WALL OF SAID FIRST FRAME ELEMENT, TO PERMIT A DIRECT REARWARD MOVEMENT OF SAID SECOND FRAME ELEMENT INTO SAID FIRST FRAME ELEMENT, A RIGID HOOK PROJECTING REARWARDLY FROM AND INTEGRAL WIHT SAID SECOND FRAME ELEMENT, SAID FIRST FRAME ELEMENT HAVING A FORWARDLY FACING GROOVE OPENING INTO SAID WALL RECESS AND RECEIVING SAID HOOK.