Debugging completed, wood sub base surround finished, final
photography and videography finished, NAWCC Zoom presentation. October
In recognition of the completion of the project two
detailed video montages as well as photos for future articles in the NAWCC
Bulletin are included in this
installment. The front and rear cover issue of the September Horological
Journal featured an eight page article, and an additional three-part
series is being published in the Bulletin beginning with the current
November/December issue and explores what has been documented since the last
article that appeared in the March/April 2017 issue.
Here we see an example of Buchananization for the transfer of power
from the central axis of the orrery out to Saturn to drive its rotation and
moons. Instead of a straight armature using a set of identical idler wheels
or a long arbor with pinions on each end, Buchanan uses a curvilinear
armature with large and other wheels of varying diameters to achieve the
Jupiter is shown using banded agate to replicate its surface, unfortunately
we could not find one that also had the eye-storm!
Saturn has five functioning moons, is shown at the correct tilt to the
ecliptic and has an upper dial showing where the moons are around Saturn in
degrees, as well as a lower dial that shows its eccentric orbit in millions
of kilometers (Mkm) and astronomical units (AU) at it aphelion and
perihelion to the Sun. This same information is given for Jupiter with four
moons. Mercury, and Mars do not show moons so the upper dial is absent, but
the lower one is present. The lower orbital dial showing the size of the
obit is present for Venus. Earth instead has a Moon phase dial. Both Venus
and Earth have a fairly circular orbits. Each planet has its name
The Earth is made of turquoise with the continents outlined in gold leaf.
The sun is made from quartz with rutile inclusions, also known as rutilated
quartz. The rutile is titanium dioxide, TiO2 and scintillates as one looks
at it from different positions giving it a sun-like look. It also acts as a
convex lens showing the moving pendulums and planets as they cross behind
the the globe.