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- Old Time Tube Collections
Just a small sample of pictures from old time tube collections. The above is an early picture of the Arthur Larson tube collection. Arthur was a patent lawyer but that is not to say all these examples were involved in patent litigation, but some may have. Authors scan from the former Tyne/Vanicek collection. Click all… - How the Vacuum Tube Works
John Howard Morecroft, 1881-1934, was an electrical engineer professor at Columbia University and at the Pratt institute. He was also the expert scientist for the US Navy during WW1. and worked in the laboratory of M. I. Pupin in submarine detection for the Navy. He served as president of the IRE in 1924, wrote several… - Like those Early RCA-Cunningham Boxes!
I always had and have a facination with the early RC, RCA, and Cunningham tube boxes probably because they were the first and most common and easiest to find and buy startting in the mid 1970’s. As most collectors know, most tube shipping boxes are quite often harder to find in good condition than the… - Did DeForest make a Type 20 tube or not?
Modern vacuum tube collectors have been trying to find concrete evidence that the DeForest Type 20 was not only made but designated type 20. This author believes he has found what has been missing or perhaps re-found again within my information? As all collectors know, Otis Moorhead was the first to bring together DeForest and,… - Schickerling Line of Tubes – A few Examples
Conrad Schickerling, besides his radio vacuum tubes, made various electrical products, and claimed to have been in business since 1898. Here are a few of those products named below- Ultra-Violet sun lamps, Automatic Ultra-Violet aquarium heaters for tropical fish, Ultra-Violet vapor health lamps, Ultra-Violet window-glass light fixtures(reflectors), Ultra-Violet water purifiers, Ultra-Violet water and air-cooling apparatus,…