![]() ![]() To secure the mainspring and prevent dust from getting in we close the barrel with a lid that snaps into its place: With the S-shaped spring the outer sections of the spring are also under a similar tension because they want to get back to their curve that is bent in the opposite direction. If the relaxed spring was just a straight piece of metal, then after winding, the inner parts would be bent much more than the outer parts. Notice that the inner sections of the wound spring have a much smaller radius than the outer parts. ![]() This helps to balance the tension in mainspring’s different sections when it is inside the barrel. If we were to keep winding the spring past its maximum capacity, we’d overpower that friction letting the mainspring slip inside – this acts as a safety mechanism to prevent the parts from breaking.Īs we’ve seen, in its relaxed state, the mainspring forms an S-shape with varied curvature throughout. This locks the outer end of the mainspring when the arbor moves the inner. While the entire watch movement has many parts, the timekeeping system, which forms the core function of any watch, consists of just seven major elements which we can lay out in a straight line: disabled, but if you prefer to have things moving as you read you can globally unpause them and have animations running. By default all animations in this article are enabled, but if you find them distracting, or if you want to save power, you can globally pause all the following demonstrations. In a functioning watch many parts are in constant motion. The world of watchmaking is jargon-heavy, so many of the components may have unfamiliar names, but you shouldn’t feel pressured to remember them – the names and parts will be color-coded for easy reference. The entire watch movement has a lot of parts, and in this blog post I’ll explain the purpose of each one. In this article I’m focusing on a watch movement itself, since beautiful watch cases merely hide the intricate mechanisms which are the real stars of the show. ![]() What you see here is known as the movement – the inner part of a mechanical watch that’s usually enclosed in a metal case. ![]()
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