Bell Support frame Design
The bell support system as found was a single threaded tube that connected directly to
the steel support bracket that also served as the suspension for the pendulum. There is a
set of large, heavy bells. So when the clock struck these bells the vibrations would have
substantially interfered with the time keeping of the pendulum. Also the tube did not
position the bells to meet where the hammers, as then configured would meet the bell
I decided to have the bell support severed from the pendulum support. The question was,
how to do this? One obvious way was to run a tube or rod from the cast iron base to the
bells. The problem with this idea was that the bells are rather heavy and the tube would
need to be over 22" in length to clear the clock frame, and this was the altered,
shortened length. The original bell arms were over 28" in height. The longer arms
required a very strong spring for recoil. The answer was to shorten the arm, lower the
bells closer to the original frame and thus reduce the required power overall. Eventually
a radical redesign of the simple single arm pull, was
replaced with a compound system that allowed for a lower power consumption as well as
tucking the hammer levers more within the frame of the clock. This gave the movement a
cleaner look without the long outstretched hammer arms looking like someone with the their
arms on their hips. (see photos below).
It was decided to create a subsidiary frame, complementing in design and attached to
the original. Upon this the bell system is supported. The brass stock required was
1/2" thick. It was cut by hand from solid plate and secured with counter-sunk hidden
screws. Now the bell vibrations were severed from the pendulum support mount. The bracket
also added an extra complexity to the frame and enhanced the overall "presence"
of the movement.