Re: [Phono-L] Class M

Mike, Please send a picture of what you are talking about and maybe I can solve it. I have never owned a Class M but I deal with belted loads in a different capacity. I sell industrial electric motors and I have to deal with belted loads all the time. Thanks, Steve On Oct 16, 2009, at

[Phono-L] Class M

Many thanks for those contemplating my problem with the Class M topworks screw. Mario has provided the blindingly obvious solution which is that the screw pushes against the boss in the middle of the Class M deck ( located between the two right hand mounting blocks) and acts as firstly a stop

[Phono-L] Class M Belt Adjustment.

Edison patent 499879 shows the tension adjustment you speak of. The Screw C serves to adjust the frame A on the box B for the purpose of tightening the driving belt as will be presently explained, and the lugs b' are slotted to permit this movement the screw b being finaly tightend after

[Phono-L] Edison's A-250 DD Phonograph at Glenmont

I just returned from a trip that included a visit to the Edison Historic Site and his Estate Glenmont in West Orange,N.J.. While at Glenmont I was interested in seeing whether Edison's Model A-250, shown in that famous 1914 photo of him in his Robe and Slippers with his ear up to the grill

Re: [Phono-L] Edison's A-250 DD Phonograph at Glenmont

Bruce, Tour Guides just love people like you (and me) who ask questions like that! LOL! Date: Sat, 17 Oct 2009 21:57:18 + From: bruce78...@comcast.net To: Phono-L@oldcrank.org CC: phonol...@yahoogroups.com Subject: [Phono-L] Edison's A-250 DD Phonograph at Glenmont I just returned

Re: [Phono-L] Edison's A-250 DD

The microgroove record was Edison's work, not Theodore's. Theodore designed the universal electric magnetic pickup used in the C-1 and C-2 radio/phonograph combinations of 1928. T.A.s work on microgroove recordings can be noted as early as 1899. (cylinder of course) Bruce M.