About Blogs Contact. By Iggy Z. July 6, Switchblade Mechanics: How do they work? Switchblades belong to the automatic knives family. They tend to also be known as flick knives, ejector knives, flick blades amongst other names. They are rapid, fast-deploying blades that are handy when time is of the essence. Switchblades eject automatically by a spring when a button, lever, or switch is engaged. Invented around the s, the switchblade gained notoriety in s American culture thanks to movies featuring young fictional gangs using switchblades as weapons.
In basic terms, a switchblade is a knife featuring a blade that springs out of the handle when a button is pressed. The typical switchblade, which is also known as an automatic or flick knife, looks like a regular folder, rotating around a hinge.
But when the knife is being closed, tension from an inner spring is put on the blade. When fully closed, the tension is separated from the knife by a button. When the button is pressed, the tension of the spring is released back onto the blade and it flicks open without any effort. The U. Switchblade Act of made possession of switchblade knives illegal on a national level after the knives became popular with street gangs. Spring-assisted knives differ from switchblades in that the user presses a thumb stud attached to the blade, rather than a button attached to the handle.
Ownership of these knives is considered legal by the U. Postal Service with some exceptions — See U. Title 18 below. Exception 5 to Section below became law in This exception was included to protect one-hand opening, or assisted opening, knives, from being incorrectly considered automatic knives switchblades or gravity knives.
Whoever in or affecting interstate commerce, within any Territory or possession of the United States, within Indian country as defined in section of title 18 , or within the special maritime and territorial jurisdiction of the United States as defined in section 7 of title 18 , knowingly possesses, manufactures, sells, or imports a ballistic knife shall be fined as provided in title 18, or imprisoned not more than ten years, or both.
Whoever possesses or uses a ballistic knife in the commission of a Federal crime of violence shall be fined as provided in title 18, or imprisoned not less than five years and not more than ten years, or both. The exceptions provided in paragraphs 1 , 2 , and 3 of section of this title with respect to switchblade knives shall apply to ballistic knives under subsection a of this section.
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