Rebuilding Metal Cone CRT's

[jr_tech]

"Unlike the 15G, the metal components on a 21AXP22 are a single layer of metal that has no metal to metal laminations that could leak."

Thanks! I had forgotten that the 21AXP22 had a metal "skirt" around the faceplate... I was thinking that it was an all glass panel back to the flange. I remember reading or hearing somewhere that RCA shipped carloads of these front and rear assemblies across the country (to Varian?) to be welded together... can anybody confirm that?

jr

[Duke Nukem]

There were some rectangular tubes with metal cones too, I don't know their numbers off hand.

I'd totally forgotten that there had ever been rectangular metal cone CRT's, but I now remember that RCA introduced one (the first?) towards the end of 1951 with a 14.5x11 inch screen area; but the UK were already starting to use all-glass CRT's not long after round metal cones appeared over here so never got to see a rectangular B&W metal cone. If anyone has a picture of one (particularly that first RCA one) I could shamelessly steal for my website it'd be much appreciated.

TTFN,
Jon