Here is an antiquated yet interesting invention: to be able to get consistency in rerecording and mixing of soundtracks at the Disney studios, a console that is generally referred to as The Iron Pencil was designed by Bill Garity and Jackson G. Kuhn (whom I believe to be alumnus of the Department of Physics, Cornell University, Ithaca, New York around 1930). The patent was applied for on July 31st, 1940, the same day as the filing of the two Fantasound patents, which implies to me that it was invented originally for mixing Fantasia, which was released in November that year. The patent was granted June 24th, 1941, in the middle of the infamous strike. In its simplest form the console would look like the patent application image: in the center would be the master score, and the musician - or Jim MacDonald - would follow it using a metal pin connected to a pantograph system which in turn moved a lamp throwing a light circle, not much larger than an inch in diameter, on copies of the scor...