> Today's Topics: > > 1. The Practical Long Play Record (Bruce Mercer) > 2. Re: The Practical Long Play Record (Dan Kj) > 3. Edison business phono (Steven Medved) > 4. Re: best reamers? (noveltyt...@aol.com) > 5. Re: Edison business phono (cranke...@comcast.net) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 29 Apr 2006 14:50:38 -0500 > From: "Bruce Mercer" <maxbu...@sigecom.net> > Subject: [Phono-L] The Practical Long Play Record > To: <phono-l@oldcrank.org> > Message-ID: <000601c66bc6$315ccda0$af9bb...@vaio> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > > > >> ------------------------------ > >> 3. If 33.3rpm Vitaphones were a Victor concern (right? weren't they?), >> and >> Edison invented the microgroove (as well as the micromicrogroove with his >> almost unplayable 80rpm LP's), and Victor combined a type of microgroove >> with their PT LP's, then exactly what did Columbia get credited for >> "inventing" in 1948? >> >> >> Again, many thanks to you all, >> Robert >> > > Since Edison did invent the first true microgroove record and a special > elliptical stylus for playback, even though they were years ahead of their > time in practicality, Columbia can be given credit for marketing the first > 'practical' and successful L.P. record. This is in no small part due to > the > lightweight pickups developed by G.E. and Pickering in '47-'48, such as > the > G.E. VR. Also, vinylite was an added bonus as a quiet surface with little > noise. Without these benefits it too would have been a commercial failure. > That Edison was able to process a groove that small and an elliptical > stylus > in that time is amazing to me. One wonders how much of that work was > borrowed by Columbia. You have to remember that even Columbia's L.P. did > not > have as small a groove as the Edison L.P.. It's easy to see just how > significant those light weight pickups were to microgroove records in > general. Edison was just way ahead of his time. > Bruce > > > > > > > ------------------------------ > > Message: 2 > Date: Sat, 29 Apr 2006 21:18:01 -0400 > From: "Dan Kj" <ediso...@verizon.net> > Subject: Re: [Phono-L] The Practical Long Play Record > To: "Antique Phonograph List" <phono-l@oldcrank.org> > Message-ID: <002901c66bf3$ed355c40$6700a...@lap> > Content-Type: text/plain; format=flowed; charset=iso-8859-1; > reply-type=original > > Young Theodore Edison, to be precise ; most of the LP work was his own >
Not precise or true. Edison(T.A.) was involved in microgroove recording on cylinders as early as 1899 as well as the development of the elliptical stylus to play them back. It's all very well documented. Theodore on the other hand did design the wonderful electric pick-up that was used on the company's radio/phonographs in 1928. Models C-1 and C-2. bruce
