Method of manufacturing a unitized in-line electron gun

In the manufacture of a unitized, in-line electron gun for a color cathode ray tube having an axial succession of unitized electrodes including a final focus electrode, said electrodes each having therethrough three beam-passing apertures aligned with the beam-passing apertures in other electrodes, a method for aligning and attaching a convergence cup to the final focus electrode, comprising:

• providing a carrier plate having three beam-passing apertures of the same diameter and position as the beam-passing apertures in said final focus electrode;
• aligning said carrier plate with said final focus electrode by locating tool means inserted through said outside beam-passing apertures of both said carrier plate and said final focus electrode;
• bonding said carrier plate to said final focus electrode by welding means;
• aligning the bonded combination of said carrier plate and said final focus electrode with said convergence cup by tooling pin means inserted through aligned like-size apertures in said carrier plate and said convergence cup and located away from said beam passing apertures;
• and
• bonding said combination and said convergence cup by welding means.