What Are “Slave Clocks”?
Not all vintage wall clocks are created equal. Most large industrial wall clocks found at flea markets and antique stores are “Slave Clocks” (also known as Nebenuhren in German or Horloge Esclave in French) with their industrial look and their own specific mechanism. Other smaller vintage wall clocks might be equipped with a quartz movement. But they are by far as aesthetic as industrial clocks of the Slave Clock type.
How To Make A Vintage Wall Clock Work: Slave Clock Impulse Driver Vs Modern Clock Movements
The choice of one or the other system will mainly depend on what you want to do with this vintage wall clock: to bring back to life an antique and historical piece whose “heart” was already beating more than 100 years ago while ensuring its technical integrity, or to have a simple and precise tool to keep track of the passing of time. Let’s look at the pros and cons of each solution.
How To Make A Vintage Wall Clock Work With A Slave Clock Impulse Driver (Mini Masterclock)
One of the most elegant solutions, and one that allows the integrity of the clock and its original mechanism to be preserved, is the use of a Slave Clock Impulse Driver. I would personally highly recommend this solution if your intention is not only to keep time but also to have a unique and original object in your home. Moreover, this system is an excellent conversation starter!
If you prefer to build it yourself, here is a useful page that describes the building and setup process.
Basically, a Slave Clock Impulse Driver is a small circuit controlled by a crystal and micro-controller that gives either a 30-second or 60-second pulse to drive a slave clock in the absence of a Master Clock. A typical lifespan for the battery pack located in the back of the clock is around 18 months. The clock can also be powered by an external wired power supply if desired.
If the Slave Clock Impulse Driver is out of your budget – $70 is not a bargain for everyone-, or if you aim for simplicity and maintaining the integrity of the original clock mechanism is not so important to you, it is possible to replace the original wall clock mechanism completely and relatively easily with a modern quartz mechanism.
How To Make A Vintage Wall Clock Work With A Modern Clock Movements (Quartz, Radio-Controlled)
This solution may be the least elegant but is undoubtedly the cheapest. A quartz movement can be found on the Internet for less than $10. Premium movements can be found for higher price.
This section will not be as long as the previous one dedicated to Slave Clock Impulse Drivers, as replacing the original wall clock mechanism with a quartz mechanism is a relatively simple procedure. Simply dismantle the old mechanism, while paying attention to the watch hands, and replace it with the new quartz movement.
Some modern clock movements even include radio-controlled clock movement UTS 700 DCF 77 PREMIUM, which is one of the most accurate clock movement technology in the world today. UTS movements have a built-in radio receiver that monitors the DCF low-frequency time signal that is broadcast from specific places around the world, and that will adjust itself automatically to the time of the Cesium Atomic Clock which shows that exact time according to the national time standard. Basically, you never have to change to daylight savings time, as the movement does it by itself.