Full scale mockup page 2
What you see here is only about 1/3 of the final design's complexity as all of the
'behind the dial' work is excluded as well as that of the sun /moon rise set systems,
perpetual calendar work and much of the orrery. Even so, one can appreciate the
intricacies involved with this movement. Below are shots of the orrery and the sun / moon rise and set subsystems. The
orrery mockup only goes out to the planet Jupiter, the actual one will go out to Saturn;
an extra planet out. In addition to the planets orbiting, the moons around Jupiter (4) and
Saturn (5) which were all the moons known at the time of it's original design in 1780,
also orbit correctly around their parent planet. In the next dial - the sun / moon
subsystem, the outer ring has a pair of moving shutters indicating nighttime. A rotating
moon indicates it's phase. Note the moon is in front of the shutters as the moon
can sometimes be seen during the daylight hours. The inner ring has a similar set of
movable shutters and a sun indicator to show it's position above the horizon. The center
dial shows the time of the moon rise and set.
All of the celestial subsystems can be individually demonstrated or can be demonstrated
all together. In this way one can see how all of the celestial indicators operate with
respect to each other.
Below is the tellurium showing the Sun-Earth-Moon system. The second is a shot of one
of a pair of compound flies that mediate the remontoire system.
The first photo shows the main time dial and perpetual calendar system. The main dial
also has a hand for indicating the equation of time. One can see the equation cam just
below the dial. The next photo shows the planisphere, it's setting dial (right) and
sidereal time (left). The sidereal time dial departs from the normal 24 hour chapter ring
to a conventional 12 hours. This is to make it easy to compare how the sidereal time
changes in relation to the mean solar time indicated on the main dial. The last photo
shows one of a pair of strike train flies based on Fasoldt's design. The cage will be in
steel and the wheels will be in a pink bronze to give contrast to the yellow brass frame.
In fact all of the wheels in the movement will be of a pinker color to show better against
This photo shows the front of the dual remontoire with their driving weights. The
second are the balances with their associated anti-friction wheel assemblies.