A small clock glossary

(Kieninger Patent)

Automatic beat adjustment

The term automatic beat adjustment refers to a automatic adjustment of the anchor position relative to the escape wheel through an over swing of the

pendulum. This is achieved with a precisely tolerated friction between anchor and anchor shaft and an additional disc attached to the escape wheel. Because of the automatic beat adjustment a perfectly even tic sound will develop after the over swing period of the pendulum is completed.

(Kieninger Patent)

Automatic night shut-off

When activating the night shut-off the chimes or strike are/is automatically turned off between 10.00 P.M. and 7.15 A.M. (movements with quarter hour

chime) or 10.00 P.M. and 7.00 A.M. (movements with half hour strike). The night shut-off incorporates an additional mechanism and a special time curve to interrupt the release of the chime and/or strike mechanism(s).

(Kieninger Patent)

True second & correct second

With a "true second" feature second hand moves in precise second steps. This is only possible for movements with a second pendulum, that is, with a pendulum length of nominal 116 cm. For movements with shorter pendulum lengths Kieninger uses a special second module for a correct second indication.

Regulator & Escapement

The term "escapement" refers to the combination of the clock components anchor and escapement wheel. The anchor is either made in one piece

(patented Kieniramic7 solid anchor) or consists of an anchor body with inserted pallets (Kieniramic7 pallet anchor). The special gearing of the escapement wheel is matched for the type of escapement and the anchor. The escapement regulates the otherwise uncontrolled run of the time drive

with the help of the regulator oscillations and at the same time provides the regulator with the necessary drive impulse. Depending on the type of

movement the regulator can be either a pendulum or a balance wheel. The oscillation rate of the regulator determines the rhythm for the movement of the hands. Kieninger movements use a stationary escapement (Graham) or a escapement (Swiss escapement). All Swiss escapements are factory adjusted in operating position ("adjusted").

Maintaining Power

The time drive of weight powered clock movements with maintaining power continues to run during winding. This is achieved through a counter locking gear with spring, which provides a power reserve for the time drive during winding.

Lyre pendulum

A pendulum style which includes multiple, vertically oriented bars joined by a bridge in the middle and which has a harp shaped structure above the

pendulum bob.

Moon phase dial

A dial which tracks the moon's phases through the 29 1/2 day lunar month. As the rotating moon dial passes behind representations of the eastern and

western hemispheres, the phases of the moon (new moon, full moon, waning crescent, etc.) are represented as they appear at each stage of the


Compensation pendulum

Due to temperature fluctuations the different metallic components of normal pendulums expand at different rates. Therefore the length of the pendulum changes and triggers fluctuations of the running speed (time keeping). Through a specific arrangement of metals with different expansion coefficients and a corresponding design of the pendulum these differences of expansion rates are compensated.

Automatic chime sequencing

When activating the automatic chime sequencing the motion of the hand shaft automatically shifts the melody drum of triple chime movements to the

next melody every hour after the hour count is completed.

Pendulum length

For identification Kieninger uses  nominal pendulum lengths with a defined rate of beats (oscillations) per hour for each length (see table on page

6). Depending on design and method of measuring actual pendulum dimensions differ from nominal dimensions.

Roller burnishing

The term refers to a special, traditional process for the surface treatment of the axle journals of pinions and arbors during clock manufacturing. In doing so the surface of a turning component is smoothened and compressed with a rotating ("roller burnishing") hard metal disk. With this process a very high life expectancy and soft running characteristics of the bearings are achieved.

Tempus Fugit

Latin for "Time flies". Traditionally these words are often inscribed on a decorative clock dial.

Pendulum leader

Through the pendulum leader, which is attached to the anchor and engages into the pendulum extension, the power is transferred from the movement to the pendulum.