subject: The Importance Of The Disc Spring [print this page] If a survey asked participants to make a list of the most important technological innovations of the last millennium, the disc spring probably wouldn't even make it into the top 500. Sadly, sometimes the world's most impressive and life-changing inventions are unappreciated simply because they're so common.
Belleville Washer Background
For those of you unfamiliar with weaponry, auto mechanics, and locking mechanisms, the disc spring was invented by Julian F. Belleville and is sometimes referred to as a Belleville washer, coned-disc spring, or cupped spring washer. Without this marvel of modern spring engineering, weapons such as the M19, M15, land mines, and high quality detonators would never have come into existence. If not for the efforts of Julian F. Belleville, a name with which few are familiar, the United States might have lost World War I and II. While the disc spring is only one piece of a puzzle of dozens of components in rifles like the M15, its simple design and impressive mechanical properties are responsible for the success of these weapons.
Mechanical Advantage
Incredibly, this revolution in spring technology is typically produced using technology that was available in the late 18th century! Those of you unimpressed with the historical aspect of stainless disc springs or their efficient production with steel mill machinery may be interested to learn that using stainless disc springs in a weapon's design offers a variety of mechanical advantages including better space utilization, high load capacity, high fatigue life, and a low creep tendency. The disc spring really is a modern mechanical miracle, no less respectable than the transistor or the electromagnet.
Credit to the Washer
What does it all this mean to the average guy? Consider this: if men didn't labor over steel mill machinery to build disc springs, our soldiers wouldn't have advanced weapons, demolition experts wouldn't have reliable mechanical detonators, and race car drivers wouldn't be quite as safe on the race track. Are Belleville washers the single-most important invention in the history of mankind? Perhaps not. Nonetheless, coned-disc springs have had more of an impact on world history and technological advancements in other fields than most realize.
Building Blocks of Invention
The disc spring is only one of a mountain of inventions that have changed the course of history without receiving the same sort of acclaim as the light bulb or the automobile engine. The time has come for everyone to sit up and take notice of the common, ordinary inventions that make our lives easier without our even realizing it. How many times have you watched the television without marveling over the complexity of liquid crystal diodes? Likewise, how many times have you read a book or a magazine without even considering the effort that went into producing the very first printing press? Give credit to those men and women who, without thought to fame or fortune, invented the very machines, chemical compounds, and methods that gave modern inventors the foundation to create new and incredible technologies. It can be truly said that today's triumphs are a direct result of yesterday's efforts.
