VALVE TYPES & MANUFACTURING TECHNIQUES (xii) - B7G & B9A VALVE ASSEMBLY CONTINUED - ELECTRODE CAGE ASSEMBLY II

We last left valve assembly where we had formed the electrode cage, today, we will describe what happened next in the valve assembly process.  Before the electrode cage could be mounted on the valve base, four additional components needed to be added and welded into position.  The first two components were the top and bottom screen plates and projecting tags which are welded through onto tags on the outer screen as per the photo below: - 

The third extra component is an L shaped piece of metal which is first welded to the bottom screen plate and then bent over and welded to one of the suppressor grid support rods, finally, the last piece, the getter frame is welded to the top screen plate as shown in the photo below: -

Whew, and now you can see that after all of this dexterous handiwork, the elctrode cage is finally assmbled, ready for the next stage in valve assembly.... and my next blog entry.