The history of the switchblade (automatic knife) dates back to the late 18th or early 19th century in Europe. The earliest automatic knives appeared in Italy and Spain during the late 18th century. These knives were typically referred to as “automatic folding knives” or “spring knives.”
The design of the switchblade likely originated from Italian and Spanish craftsmen, who added a spring mechanism to traditional folding knives, allowing the blade to be automatically deployed by pressing a button or activating another trigger mechanism. At that time, these knives were primarily used as tools or self-defense weapons.
By the early 20th century, especially in the United States, the design of the switchblade saw further development and increased popularity. In the U.S., George Schrade, a notable inventor, applied for several patents related to automatic knives in the early 20th century. These inventions greatly facilitated the industrial production and widespread use of switchblades.
The legality of switchblades varies across different regions. Switchblades with locking mechanisms are considered controlled knives, and carrying them may be subject to legal restrictions.