This patent was issued to Heinrich Kielmann (Ruhrort/Rhein) in 1890 or 1891 and concerned the hanging of the pendulum. The figure 116 adjacent to the 34 number on the movement refers to beats per minute. The pendulum rod from the hook to the bottom of the rod is 26.5 cms. Within the total length is the suspension spring which, for this movement is 2 centimeters in length. The 34 cm measurement includes the following: the very top of the suspension spring post, the suspension spring, pendulum hanger and pendulum rod and bob. Nomenclature of a German pendulum assembly For example, the number 34 refers to the measurement in centimeters from the top of the suspension spring post to the bottom of the pendulum regulating nut. Some of these numbers have a clear explanation while others are somewhat of a mystery. In the lower portion of the back plate you will see a series of numbers. For an explanation I refer to a Mauthe time and strike movement. On many German antique pendulum driven clocks you will find several numbers on the back plate.
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