Are kundo clocks valuable?

Anniversary clocks are long-running torsion pendulum clocks, also known as 400-day clocks. Kundo anniversary clocks were first produced in 1923 and are now highly collectible.

In respect to this, how does a kundo clock work?

Kundo 400 Day Clock Instruction Sheet ca. For the type of clock with pendulum locking device at the bottom rear of the movement. To wind this clock, put the key on the square and turn counterclockwise, 1/2 turn at a time. Release the key gently after each half-turn, don't let let it snap back suddenly.

Also, how often do you wind an anniversary clock? once a year

Besides, what is a 400 day anniversary clock?

A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum. The clock's gears apply a pulse of torque to the top of the torsion spring with each rotation to keep the wheel going.

What is the meaning of the anniversary clock?

Definition of anniversary clock. : a clock with a slow torsion pendulum that enables it to run as long as 400 days on a single winding.

18 Related Question Answers Found

Why does my 400 day clock stop?

Let the Anniversary Clocks Pendulum balls settle down from jiggling around and notice where they stop. Now rotate the balls 1/2 of a revolution and gently let go. When it's time to repair a 400 day clock, two things usually need to be done. The suspension spring gets replaced and the movement gets cleaned.

How do you wind a 30 day clock?

How to Wind Up a 31 Day Clock

Step One: Open the Clock Face. Try to wind the clock as close to the time when it stopped as possible.
Step Two: Locate the Clock Key.
Step Three: Place the Clock Key Into the Right Side Winding Hole.
Step Four: Listen For the Correct Sound.
Step Five: Inspect the Clock One Week After Winding.

How do you unwind a clock spring?

First you can try to run your clock manually by moving the minute hand clockwise stopping to let the clock chime this will relax the chime mainspring if your clock has chimes, moving the pendulum back and forth will relax the mainspring that controls the pendulum but will take some time to do so.

How do I regulate my anniversary clock?

An effective way to regulate a 400 day clock is to grasp the pendulum when as comes to a stop at the end of a rotation, hold it in place, turn the regulating disc, then release the pendulum.

How do you clean a 400 day clock?

Dennis, Over the years I've found most 400 day clocks clean up very nicely by simply striping the lacquer. The lacquer gets scratched, dirty and rubbed off over time and looks bad. Strip your case with lacquer thinner, dry it, wash with a strong ammonia, dry again and lacquer it.

How does an anniversary work?

An anniversary is, by definition, something that happens once per year. It marks a specific date. And while it may be fun in the beginning of something to celebrate “one month!” As time progresses, it's not so much. We've been together for just shy of 8 years.

What cause a pendulum to come to a stop?

A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and the attachment points) slows it down and eventually stops it.

Why does my pendulum stop swinging?

The reason a clock pendulum often stops swinging, after being moved, is because the clock case now leans at a slightly different angle then it did at its former location. A clock is "in beat" when the tick and the tock are evenly spaced.

How do you adjust a pendulum on a clock?

Use the following rules to adjust the PENDULUM NUT; If the clock is running slow, turn the pendulum nut clockwise to increase the rate. If the clock is running fast, turn the pendulum nut counterclockwise to decrease the rate.

How can I slow down my anniversary clock?

To slow down the clock, loosen the adjustment nut (turn it toward your left). The bob will settle lower, making the effective length of the pendulum longer. The clock will run slower. To speed up the clock, tighten the nut (turn it toward your right).