Schickerling Products Corporation
Schickerling Products Corporation, 401 Mulberry Street, Newark, New Jersey, USA
d/b/a Corona Radio Vacuum Tubes, 401 Mulberry Street, Newark, New Jersey, USA
Last seen: 01-Jan-1927
Brand(s): Schickerling, TVT,
Conrad Schickerling and his family were inventors through and through.
He seemed to rely on publicity, breaking new ground, and what must have been a steady income stream from his 90+ patents by 1924. This perhaps allowed him to weather slow sales, or high manufacturing costs. His tubes represent much more that attempts to break barriers in technology, they were designed to look almost over complicated. If seeing was believing, then Schickerling's tubes must have gained believers whenever they lit up. Trios of triangles, tales of a 'fourth element', a 'tube within a tube' and other such wonders could all be traced to these ellaborate pieces of metal grappling the plate and suspending the filament.
Conrad was no dummy and leveraged the power of persuasion expertly. In the end, however, tubes became less and less about hype and more about performance and price. Schickerling tinkered with and produced his strange tubes into the era of rectifiers and A/C heated 227 designs. He made a few deals to have his 201A equivalents paired with new radios, but volume surely didnt pick up enough to counter the price drops of 1927. A/C was here to stay, and Schickerling's tubes soon vanished.
I try and add Schickerling's tube details below between each 'phase' of their product offerings.I have never run across the 'Corona' brand being used as implied by the listing in 5000 Trade Names, pg. 18, though it is clearly linked to Schickerling Products Corp. as of Jan-1927
Note: there are many pre-production variants that I wont add unless I run across one to add to my collection. Bill Condon's site has what may be the most extensive set of Schickerling tubes known. Schickerling's tubes are scarce at best, with most being rare. I will crop out print images for most tubes since I do not have other better photographs available. -Chris
In the Fall of 1924, Conrad & Hortense Schickerling began a publicity campaign around their newst invention, the 'battery-less' radio tube. In those days this was code for a humless tube that would run on A/C power...a feat that would not be accomplished by the industry until two or three years later, after 1926.
Before Mar 1925, Schickerling began offering what would be he most popular tube, the S-4000.
- Radio Retailing, Jun-1929, pg. 267. From AmericanRadioHistory.com. Retrieved 30-Nov-2018. !
- Official Gazette US Patent Office, 20-Jan-1925, vol. 330, pg. 504. From Hathitrust.org. Retrieved 02-May-2019 *
- Official Gazette US Patent Office, 16-Oct-1928, vol. 375, pg. 630-631. From Hathitrust.org. Retrieved 02-May-2019 *