Method for uniting an abraded element to an envelope

Claim 1

THE METHOD OF CONNECTING A FIRST MEMBER OF GLASS TO A SECOND MEMBER OF GLASS HAVING ONE OF ITS SURFACES ABRADED TO A PRECONTROLLED SHAPE, SAID METHOD COMPRISING ETCHING SAID ABRADED SURFACES OF SAID SECOND MEMBER TO A DEPTH SUCH AS TO REMOVE SHARP IRREGULARITIES OF CRACKS, CAUSED BY THE ABRASION THEREOF, PLACING SAID MEMBERS ONE UPON THE OTHER WITH A SOLDER GLASS DISPOSED BETWEEN SAID MEMBERS THROUGHOUT AREAS THEREOF TO BE CONNECTED, SAID SOLDER GLASS BEING CHARACTERIZED IN THAT ITS MELTING TEMPERATURE IS BELOW THAT OF THE GLASS OF SAID FIRST AND SECOND MEMBERS AND HEATING SAID GLASS MEMBERS AND SOLDER GLASS TO A TEMPERATURE SUFFICIENT TO RENDER SAID SOLDER GLASS FUSIBLE TO SAID MEMBERS.

Claim 2

THE METHOD OF CONNECTING A FIRST MEMBER OF GLASS TO A SECOND MEMBER OF GLASS HAVING ONE OF ITS SURFACES ABRADED TO A PRECONTROLLED SHAPE, SAID METHOD COMPRISING ETCHING SAID ABRADED SURFACES OF SAID SECOND MEMBER TO A DEPTH SUCH AS TO REMOVE SHARP IRREGULARITIES OF CRACKS, CAUSED BY THE ABRASION THEREOF, PLACING SAID MEMBERS ONE UPON THE OTHER WITH A SOLDER GLASS DISPOSED BETWEEN SAID MEMBERS THROUGHOUT AREAS THEREOF TO BE CONNECTED, SAID SOLDER GLASS BEING CHARACTERIZED IN THAT ITS MELTING TEMPERATURE IS BELOW THAT OF THE GLASS OF SAID FIRST AND SECOND MEMBERS AND HEATING SAID GLASS MEMBERS AND SOLDER GLASS TO A TEMPERATURE SUFFICIENT TO RENDER SAID SOLDER GLASS FUSIBLE TO SAID MEMBERS.

Claim 3

THE METHOD OF FORMING AN INTEGRAL GLASS STRUCTURE EMBODYING A MEMBER FORMED OF FUSED GLASS FIBER ELEMENTS AND A GLASS ENVELOPE COMPRISING FORMING AN OPENING EXTENDING THROUGH SAID ENVELOPE, ABRADING THE EDGE PORTIONS OF SAID OPENING TO A DESIRED SHAPE, ACID ETCHING SAID ABRADED PORTIONS TO A DEPTH SUFFICIENT TO REMOVE SHARP IRREGULARITIES OF CRACKS RESULTING FROM SAID ABRADING, PLACING A REALTIVELY THIN LAYER OF A GLASS MATERIAL CHARACTERIZED IN THAT ITS MELTING TEMPERATURE IS BELOW THAT OF THE MATERIALS OF SAID MEMBER AND ENVELOPE UPON THE PORTION OF SAID ENVELOPE TO WHICH SAID MEMBER IS TO BE ATTACHED, SEATING SAID MEMBER UPON SAID GLASS MATERIAL AND HEATING THE RESULTANT TO A TEMPERATURE SUCH AS TO CAUSE SAID GLASS MATERIAL TO MELT AND FUSE TO THE ADJOINING AREAS OF SAID MEMBER AND ENVELOPE.

Claim 4

THE METHOD OF FORMING AN INTEGRAL GLASS STRUCTURE EMBODYING A MEMBER FORMED OF FUSED GLASS FIBER ELEMENTS AND A GLASS ENVELOPE COMPRISING FORMING AN OPENING EXTENDING THROUGH SAID ENVELOPE, ABRADING THE EDGE PORTIONS OF SAID OPENING TO A DESIRED SHAPE, ACID ETCHING SAID ABRADED PORTIONS TO A DEPTH SUFFICIENT TO REMOVE SHARP IRREGULARITIES OF CRACKS RESULTING FROM SAID ABRADING, PLACING A REALTIVELY THIN LAYER OF A GLASS MATERIAL CHARACTERIZED IN THAT ITS MELTING TEMPERATURE IS BELOW THAT OF THE MATERIALS OF SAID MEMBER AND ENVELOPE UPON THE PORTION OF SAID ENVELOPE TO WHICH SAID MEMBER IS TO BE ATTACHED, SEATING SAID MEMBER UPON SAID GLASS MATERIAL AND HEATING THE RESULTANT TO A TEMPERATURE SUCH AS TO CAUSE SAID GLASS MATERIAL TO MELT AND FUSE TO THE ADJOINING AREAS OF SAID MEMBER AND ENVELOPE.