Method of producing vacuum tube socles without the need for further cutting of the interior conductors after moulding, and apparatus for carrying it out.

摘要

The mould comprises a cylindrical base (1) with a central opening (2) surrounded by a series of blind holes (2B) to receive conductor wires (3C). A corresponding upper section (4) has a matching ring of holes (9) each with a counterbore (8) at its upper end. A set of spacers (12), provided for each counterbore (8), has central holes of varying depths or passing straight through. These fit around the conductor wires (3C), and are matched to the length of each so that they lie flush with the top surface of the mould. After inserting all conductors (3A), blocks (6) are fitted in a recess (4B) of the upper section (4) to lie one above each spacer (12). When the two parts of the mould (1,4) are pressed together in a pinch forming operation, the blocks (6) and spacers ensure correct location of each conductor.