Universe | Science | Facts on Instagram: "Handcuffs are simple-looking, but inside they use a smart mechanical locking system designed for control and safety. 🔹 1. Ratchet Mechanism Each cuff has a curved arm (called a pawl) with teeth. When the cuff is closed, the teeth slide over a ratchet, allowing it to tighten only one way. 🔹 2. Spring-Loaded Lock Inside the cuff, a spring pushes a locking bar into the ratchet teeth. This stops the cuff from loosening unless the lock is released. 🔹 3. Ke
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Instagramuniverse_sciencefacts
Universe | Science | Facts on Instagram: "Handcuffs are simple-looking, but inside they use a smart mechanical locking system designed for control and safety. 🔹 1. Ratchet
8 likes, 0 comments - universe_sciencefacts on January 26, 2026: "Handcuffs are simple-looking, but inside they use a smart mechanical locking system designed for control and safety.🔹 1. Ratchet MechanismEach cuff has a curved arm (called a pawl) with teeth.When the cuff is closed, the teeth slide over a ratchet, allowing it to tighten only ...
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