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 10:01 PM, Mike Tucker wrote:
For the technical minded.
I have occasionally wondered what was the purpose of the screw in
the topworks castings, under the mandrel, on Class M phonographs.
Reading a copy of the 1893 "The Phonogram", I came across an article
on "How to work the Phonograph" which noted that "if the belt slips,
it needs tightening" and goes on "with a long-handled screwdriver
turn the projecting screw under the mandrel a few times, which will
press the body forward and tighten the belt.".
The Class M's I have seen either have no screw in place or the screw
goes through the casting and doesn't connect to anything, so turning
the screw does precisely nothing.
I must assume that there was some additional part which the screw
butted against to enable it to move the topworks, but I cannot see
how or where this would fit.
Can anyone enlighten me?
_______________________________________________
Phono-L mailing list
http://phono-l.oldcrank.org
_______________________________________________
Phono-L mailing list
http://phono-l.oldcrank.org
