Insight: Governors of Minute Repeaters, Sonneries, and Other Striking Watches
Repeaters are one of the most complicated mechanisms in watches and over the years the complication has been refined by successive generations of watchmakers. Now, perhaps more than ever, watchmakers dedicate absolute attention to perfecting the quality, speed, accuracy, and durability of the striking works. Various components are required to chime the tunes of time with hammers and gongs. Paradoxically, amongst the most crucial parts of a chiming watch are those that work quietly, or silently, in the background – the governor. One of the most recent new repeater calibres, the A. Lange & Söhne Richard Lange Minute Repeater What is a governor? The governor regulates the speed of the striking pattern, in other words the pace of the individual chimes. A repeater movement contains a separate gear train for the repeating works, which are powered by their own smaller, auxiliary spring. The last component of this train consists of the governor. The governor’s task is to introduce resistance in the repeater train, allowing it to be regulated. Therefore, less resistance accelerates the striking speed, while more resistance slows down the repeater chimes. The Vacheron Constantin cal. 1731 with the secondary spring visible between the hammers The fine-tuning of the repeater’s speed is prized as an essential factor in ensuring a perfect series of chimes. If the pace is too fast, the vibrations of the gongs produce jarring overtones that cancel each other out. If too slow, not o...
Fratello
