Molded jamb-frame combination and method of manufacture

Claim 1

PREFABRICATED MOLDED UNITARY FRAME FOR A CLOSURE STRUCTURE TO FRAME AN OPENING IN THE WALL OF A BUILDING IN WHICH SAID WALL IS OF THE GENERAL CHARACTER TO INCLUDE WALL FRAMING MEMBERS HAVING A WIDTH PARALLEL TO THE THICKNESS OF THE WALL AND TO INCLUDE A WALL SURFACING MATETIAL THEREOVER, THE UNITARY FRAME COMPRISING: RECTANGULAR ARCH FRAME BODY HAVING AT LEAST TWO ELONGATE SUBSTANTIALLY PARALLEL AND COEXTENSIVE SIDE MEMBERS AND A TOP MEMBER FORMED INTEGRALLY AT RIGHT ANGLES THEREWITH IN A MANNER BRIDGING THE UPPER ENDS OF SAID SIDE MEMBERS TOGETHER TO FORM THE RECTANGULAR ARCH; SAID SIDE AND TOP MEMBERS EACH BEING FORMED TO INCLUDE A JAMB PORTION HAVING A CHANNEL CONFIGURATION ADAPTED TO BE DISPOSED TOWARD SAID WALL FRAMING MEMBERS AWAY FROM SAID OPENING, SAID CHANNEL HAVING A REFERENCE AND MORTISING BLOCK RECEIVING WIDTH IN THE DIRECTION PARALLEL TO SAID WALL THICKNESS WHICH IS SUBSTANTIALLY EQUAL TO THAT OF SAID WALL FRAMING MEMBERS, SAID SIDE AND TOP MEMBERS EACH BEING FURTHER FORMED TO INCLUDE WALL SURFACING MATERIAL RECEIVING, RETAINING, AND TRIMMING LIP PORTIONS WHICH EXTEND OUTWARDLY SUBSTANTIALLY PARALLEL TO SAID WALL THICKNESS FOR APPROXIMATELY THE THICKNESS OF SAID WALL SURFACING MATERIAL AND THEN RETURN AT SUBSTANTIALLY RIGHT ANGLES THERETO AWAY FROM SAID OPENING FOR RECEIVING, TRIMMING, AND RETAINING THE EDGE OF SAID WALL SURFACING MATERIAL; AND WOODEN MORTISE RECEIVING AND BACKING BLOCKS AFFIXED RIGIDLY WITHIN SAID CHANNEL PORTIONS AND HAVING A THICKNESS EXTENDING AWAY FROM SAID OPENING WHEREBY THE BLOCKS FORM A WALL SURFACE MATERIAL REFERENCE SHOULDER WHICH, IN COOPERATION WITH SAID LIP PORTION, RETAINS SAID EDGE OF SAID SURFACING MATERIAL.