 |
The bell hammers were on extremely long levers. These were powered by very
strong springs. This set up required a great deal of power. It is possible that the bells
were mounted somewhere above the clock, perhaps on a separate support, a case or even from
a separate stand. There was an attachment for the bells screwed to the pendulum support
bracket (center black colored bracket). This was too short for the bells to align with the
hammers. The bells being attached to the same system that supports the pendulum presented
problems in that they are heavy and the vibrations produced by their being struck would
cause serious errors in time keeping. |
 |
The center bracket serves as the pendulum support. It's long, towering
design already presented problems for a swinging pendulum. Such a support needs to be as
ridged as possible. Mounting bells to such a system would be unwise. As it is, we had
added additional center cross braces to increase the stability of this structure. |
 |
|
 |
The next two photos show the early redesign. Abandoning the single, long
lever and replacing it with an articulated, compound lever assembly, increased power
efficiency and as well as hammer control. |
 |
I was unhappy with the way the levers were cantilevered on the outside of
the frame. Looking like someone with their elbows akimbo and an unwanted distraction from
the rest of the movement. |
 |
The rest of the photos show the revised design. Here we tucked the levers within
the boundaries of the strike frames. The hammers are fully adjustable to vary the
loudness of the strike. Large, soft leather heads are employed to moderate these large
bells as this clock will be used in a domestic environment. |
 |
|
 |
Compare the clean look that has been achieved as compared to the
forth photo. Here one can focus on the movement without the distraction of the levers
outside the frame boundaries. The movement is shown before final finishing. |