STEM-SEALING METHOD FOR ASSEMBLING ELECTRON TUBES INCLUDING IMPROVED CULLET COLLECTION

摘要

RCA 72,334STEM-SEALING METHOD FOR ASSEMBLING ELECTRONTUBES INCLUDING IMPROVED CULLET COLLECTIONABSTRACTIn a method for sealing a glass stem into the neckof an electron tube, the stem, which is supported on a mountpin, is positioned in the neck, which is longer than desired.The neck is then heat sealed, as by fusion, to the stem, andthe excess glass or cullet is cut off, whereby the culletfalls on, around and sticks to the mount pin.The cullet is released from the mount pinwithout substantially fracturing the cullet. Then, thereleased cullet is removed from the vicinity of the mountpin, again without substantially fracturing the cullet.