Hinged Handcuffs - Styles - Double Locks

Double Locks

Handcuffs with double locks have a lock-spring which when engaged stops the cuff from ratcheting tighter to prevent the wearer from tightening them. Tightening could be intentional or by struggling; if tightened, the handcuffs may cause nerve damage or loss of circulation. Also some wearers could tighten the cuffs to attempt an escape by having the officer loosen the cuffs and attempting to escape while the cuffs are loose. Double locks also make picking the locks more difficult.

There exist three kinds of double locks as described in a Smith & Wesson brochure:

Read more about this topic:  Hinged Handcuffs, Styles

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