Method of manufacture of color television picture tube

Claim 1

IN THE MANUFACTURE OF A COLOR TELEVISION PICTURE TUBE OF THE TYPE COMPRISING AN ENVELOPE HAVING SUBSTANTIAL SYMMETRY WITH RESPECT TO A PREDETERMINED AXIS AND COMPOSED OF A GLASS FACEPLATE SECTION WITH AN END PORTION AND A RIM PORTION, AND A FUNNEL SECTION SEALED TO SAID FACEPLATE SECTION, A MOSAIC PHOSPHOR SCREEN ON THE INNER SURFACE OF SAID END PORTION OF SAID FACEPLATE SECTION, AND A MULTI-APERTURED COLOR-SELECTION DEVICE HAVING A RIGID FRAME AND A MASK ELEMENT WITH AN APERTURE PATTERN CORRESPONDING TO THE DISTRIBUTION PATTERN OF THE COMPONENT PHOSPHORS N SAID MOSAIC SCREEN, THE METHOD OF MOUNTING SAID COLOR-SELECTION DEVICE IN A PRECISE PREDETERMINED SPACE RELATION TO SAID PHOSPHOR SCREEN BY THE USE OF MATING PAIRS OF MALE AND FEMALE SUPPORT MEMBERS ADAPTED FOR SPRING-BIASED MUTUAL ENGAGEMENT IN PREDETERMINED RESPECTIVE ENGAGEMENT PLANES, WHICH METHOD COMPRISES: MOLDING AND ANNEALING SAID GLASS FACEPLATE SECTION; SECURING TO SAID FRAME, AT CIRCUMFERENTIALLY SPACED LOCATIONS THEREON AND IN OUTWARDLY DIRECTED ORIENTATION WITH RESPECT THERETO, A FIRST SUPPORT MEMBER OF EACH MATING PAIR, WHEREBY SAID FIRST SUPPORT MEMBERS ARE MAINTAINED IN PREDETERMINED MUTUALLY SPACED RELATION TO EACH OTHER; AFFIXING THE OTHER SUPPORT MEMBER OF EACH OF SAID MATING PAIRS TO SAID RIM PORTION OF SAID FACEPLATE SECTION WITH ITS PLANE OF ENGAGEMENT WITH THE ASSOCIATED FIRST SUPPORT MEMBER AT AN ACCURATE PREDETERMINED DISTANCE FROM SAID AXIS, AND WITH SAID OTHER SUPPORT MEMBERS POSITIONED IN A CIRCUMFERENTIAL ARRAY ACCURATELY CORRESPONDING TO SAID PREDETERMINED MUTUALLY SPACED RELATION OF SAID FIRST SUPPORT MEMBERS; MAINTAINING THE TEMPERATURE OF SAID FACEPLATE SECTION BELOW ITS STRAIN POINT AT ALL TIMES EXCEPT DURING SAID MOLDING AND ANNEALING OPERATIONS; FORMING SAID PHOSPHOR SCREEN ON SAID END PORTION OF SAID FACEPLATE SECTION; AND BRINGING SAID MATING PAIRS OF SUPPORT MEMBERS TOGETHER TO SECURELY MOUNT SAID COLOR SELECTION DEVICE TO SAID FACEPLATE SECTION IN SAID PRECISE PREDETERMINED SPACE RELATION TO SAID PHOSPHOR SCREEN.