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They may also be used as locking devices, but only in applications with low dynamic loads, such as down-tube shifters for bicycles.Īnother example where they aid locking is a joint that experiences a large amount of thermal expansion and contraction. Some makers of bolt action target rifles use Belleville washer stacks in the bolt instead of a more traditional spring to release the firing pin, as they reduce the time between trigger actuation and firing pin impact on the cartridge. The target (a person or vehicle) exerts pressure on the belleville spring, causing it to exceed a trigger threshold and flip the adjacent firing pin downwards into a stab detonator, firing both it and the surrounding booster charge and main explosive filling.īelleville washers have been used as return springs in artillery pieces, one example being the French Canet range of marine/coastal cannon from the late 1800s (75 mm, 120mm, 152 mm). the American M19, M15, M14, M1 and the Swedish Tret-Mi.59. In the army industry, Belleville springs are used, for instance, in a number of landmines e.g.
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