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Introduction
For hundreds of years, mechanical clocks have served as functional timekeepers. During
that time, clocks have also been treasured for their artistic and aesthetic value. For most clocks,
the artistry involves the shape and ornamentation of the clock’s exterior case. However, these
cases hide the inner beauty of the clock–the clockwork mechanism.
The Tranquility clock is a wooden gear clock that is a functional timekeeper with an open
frame which exposes its mechanical elements. All the moving parts are clearly visible. It is
intriguing to watch as the seconds and minutes tick away. Of particular interest is its
‘grasshopper’ escapement. It is based on the famous escapement which was developed by John
Harrison. In the late 1700's, Harrison devised the grasshopper escapement in his quest to make
an accurate, seaworthy clock and claim the “Longitude Prize”. The goal of his articulated
escapement was to eliminate sliding friction at the pallets, which was a significant source of error
in the days when effective lubrication had not been developed.
It is enjoyable to see and hear this clock running. However, the most enjoyable part of
this clock is the satisfaction gained by assembling the clock yourself, perhaps adding your own
creative touches. And, through the process of building the clock, you will gain an understanding
of the principles that govern how a clock works, including the operation of the unique
grasshopper escapement.
We truly hope you enjoy building your clock. Please contact us if there is any way that
we can help you with your clockmaking project.
Tools and Supplies
The following items will be necessary to build your clock:
• Phillips screwdriver and small slot screwdriver
• knife
• hammer
• clamps (small spring clamps work well)
• 3-4 lbs of metal shot (available from sporting goods or firearms stores)
• wood glue
• sandpaper (100, grit, 150 grit, 220 grit, 400 and 600 grit suggested)
• pencil
• toothpicks
Safety
It is your responsibility to use the proper tools and techniques to accomplish this project,
including consulting all owner manuals and label directions for any tools or products used.
This package contains small parts, and should be kept away from young children.
Tranquility