George Westinghouse, (1846-1914), industrialist extraordinaire, had the business acumen to start many business ventures that changed people’s lives. In 1884 he formed the Westinghouse Electric and Manufacturing Company, later to be known as the Westinghouse Electric Company. This article will concentrate on the vacuum tube division of W. E. & M and its subsidiary, Westinghouse...
Contrary to popular belief, Robert Von Lieben, was the first to design and patent a triode amplifier valve. His triode amplifier patent, numbered 179,807, was published on Nov., 18th, 1906 in Germany. By contrast, DeForest had a working audion triode in his lab on Dec., 30th, 1906. He filed for a patent on Jan., 29th,...
This author has scanned all the magazines that appear on this website and many had very interesting articles like this one that Fin Stewart submitted in Vol. 14, No 2, April, 2012. Fin Stewart quote: “I picked up a mint copy of the book: BTH, Reminiscences – Sixty Years of Progress published in 1946, and...
John Fleming, working for the Marconi Wireless Telegraph Co. in London and was the first to experiment with the Edison Effect light bulb. Some of the 2nd generation Fleming valves were tubular and were mounted in what became known as the “Gallows Type”. Third and fourth generation Fleming valves took on the shape of English...
This is a copy, with a few updates, that this author uploaded to groups.io on 2/2/2021. Hope it has some interest? This author, 15 years ago, attended an auction in New York City. While no old radios or vacuum tubes were mentioned, 1 lot did have several items that I had to purchase. The items...
Very little information is available on the D-Lux Blue brand of tubes shown above. Serlin & Company, 129 and 1419 Michigan Ave., Detroit, Michigan sold these UV-201-A tubes for just 2 months in 1925 in the Detroit Free Press newspaper. They resemble the Brightson True Blue brand very closely in diameter of glass bulb, blue...
While this article is a re-do of a previous work, it has never appeared in either the old TCA magazine or on this website. It is not the complete line Otis Moorhead offered, but it represents a good deal of his product line. All tubes reside in the Joe Gruber collection. Click on the pictures...