So I'm stuck in the past and just can't get out.
A few observations and questions regarding Arne Nordskog's disc lathe. The
references I've found so far state that the lathe was "driven by hand" which
would seem to indicate that the TURNTABLE PLATTER was turned manually by
crank as the cutting was done. The two pictures I've located only give a
top view from the front and right side. These are the low resolution
picture on the First Cask website
http://firstcask.blogspot.com/search?q=nordskog and the picture on page 18
of Floyd Levin's "Classic Jazz" book, available on Google Books.
These photos lead me to believe that the only "hand driven" portion of the
lathe is the feed screw. There is clearly a front wound spring motor
present which probably drives the turntable. A rudimentary crank is cobbled
up on the right side which is most likely a manulal drive for the feed
screw. Without bottom photos it's a guess as to the linkage but it's
relatively easy to figure the possibilities.
Are there any other clear photos of the lathe that would offer other clues
or allow one to see fine details. Looks to me like the reproducer/recorder
is a Cheney vertical that was fitted for lateral cutting at an almost or
perfect 90 degree angle to the surface. And check out the tracking angle!
Must be at least a three inch overhang. Was this common??