3 Types of Clock Springs
A clock spring is different from the rounded, coil springs of today. These springs are flat, spirals of metal that are used to provide rotating tension on an object such as a clock mechanism or timers. There are three main kinds of clock springs that have their own particular uses and benefits.
Hairsprings: Hairsprings are some of the more complicated types of clock springs. The springs are used as a timing mechanism, such as for operating a parking meter, preventing backlash from a gear, or in a simple kitchen timer. The coils are evenly spaced between each coil, and the entire clock spring resembles a flat cinnamon roll. The springs are difficult to manufacturer, and are rarely produced by hand.
Brush springs: Brush springs are only called brush springs because they are most commonly used for powering carbon brushes in a motor or power generator. The spring is an open-wound spiral spring similar to a hairspring, but it is made from denser material and tougher metal. The spring resembles a rolled-up fruit leather roll. The brush spring engages nearly all coils at once while in use, which is unusual for this kind of spring. Brush springs also have even spacing, and are usually produced in specialized factories.
Power springs: Power springs are the original form of the clock spring. The springs Till have a flat, coiled shape like a cinnamon roll, but they have a much looser coil than hairsprings or brush springs. They are also made from more flexible metal than brush springs. The spring does wear out quickly, which requires that it be placed in housing to prevent the coil from unraveling completely. While most springs are created in a factory, it is possible to make your own clock springs at home without specialized training or equipment.