Locking Copperhead

The locking copperhead frame is a copperhead pocket knife that has a hidden (or trick) liner lock. The lock is activated when the primary blade is opened all the way, and then it is disengaged when the closed secondary blade is depressed (hence, “hidden or trick” lock).

The copperhead pocket knife has been around, at minimum, since 1915 when W.R. Case & Sons Cutlery Co. were manufacturing the knife. Distinguished by a protruding pocket-end bolster that is “humped” to protect the owner’s pocket from the sharp corners. This “pocket-friendly” design of one bolster probably began as copper, hence “copper head”. The copperhead knife is sometimes referred to as the “Vietnam knife” or the “Vietnam copperhead”, undoubtedly because it was popular with the military men of that time. It provided a handy knife that would not wear out military clothing that was already dealing with the rigors of jungle warfare.

Copperhead pocket knives sometimes have an indented tang to eliminate that edge, as well. The knife typically comes with a primary clip point blade and a secondary pen blade.

Showing all 5 results

  • Bulldog Brand Dark Blue Jigged Genuine Bone Locking Copperhead BDG-104DBJB

    Bulldog Dark Blue Locking Copperhead

    $17.59

    Bulldog Brand Dark Blue Jigged Genuine Bone 3 ⅜” Locking Copperhead – Made by Hand & 440 Stainless Steel

    • Polished 440 Stainless Steel Blades
    • Rockwell Tested to 56-58 HRC
    • Brass Pins
    • Brass Liners
    • Crimped Nickel Silver Bolsters
    • Hand Made Craftsmanship
    • Clip Point & Sheepsfoot Blades
    • Closed Length: 3 ⅜”
    • Amazing Blue Jigged Bone Handle!
    • Enhanced Thumbnail Pull
    • Very Unique & Collectible Locking Copperhead Frame
    • Fighting Bulldogs Shield
  • Steel Warrior Abalone Locking Copperhead SW-104AB

    Steel Warrior Abalone Locking Copperhead

    $16.83

    Steel Warrior Genuine Abalone Locking Copperhead 3 ⅜” Pocket Knife – 440 Steel

    • 440 Stainless Steel Blades
    • Rockwell Tested to 56-58 HRC
    • Amazingly Beautiful Abalone Handle!
    • Very Unique and Usable Locking Copperhead Frame
    • Closed Length: 3 3/8″
    • Clip Point & Pen Blades
    • Hidden (Trick) Lock Lockback
    • Nickel Silver Bolsters
    • Brass Pins and Liners
    • Resin-Coated Scales for Protection of Abalone
  • Steel Warrior Genuine Cobra Skin Locking Copperhead SW-104CSS

    Steel Warrior Cobra Skin Locking Copperhead

    $17.58

    Steel Warrior Genuine Cobra Skin 3 ⅜” Locking Copperhead

    • 440 Stainless Steel Blades
    • Rockwell Tested to 56-58 HRC
    • Clip Point & Pen Blades
    • Closed Length: 3 ⅜”
    • Brass Pins
    • Brass Liners
    • Nickel Silver Bolsters
    • Very Unique Acrylic-Coated Cobra Skin Handle
    • Hidden (Trick) Lock Locking Copperhead Frame
  • Steel Warrior Genuine Mother of Pearl and Oyster Shell Bar Locking Copperhead SW-104PT

    Steel Warrior Pearl & Oyster Bar Locking Copperhead

    $19.94

    Steel Warrior Genuine Mother of Pearl & Oyster Shell Bar 3⅜” Locking Copperhead – 440 Stainless Steel

    • 440 Stainless Steel Blades
    • Rockwell Tested to 56-58 HRC
    • Clip Point & Sheepsfoot Blades
    • Closed Length: 3 3/8″
    • Brass Pins
    • Brass Liners
    • Crimped Nickel Silver Bolsters
    • Hidden (Trick) Lock Locking Copperhead Frame
    • One-Of-A-Kind Pearl & Oyster Shell Bar Handle
    • Collector’s Edition Magnetic Lid Box
  • Steel Warrior Genuine Turquoise Bar Locking Copperhead SW-104TQT

    Steel Warrior Turquoise Bar Locking Copperhead

    $21.76

    Steel Warrior Genuine Turquoise Bar 3 ⅜” Locking Copperhead

    • 440 Stainless Steel Blades
    • Rockwell Tested to 56-58 HRC
    • Clip Point & Sheepsfoot Blades
    • Closed Length: 3 3/8″
    • Brass Pins
    • Brass Liners
    • Crimped Nickel Silver Bolsters
    • One-Of-A-Kind Turquoise Bar Handle
    • Collector’s Edition Magnetic Lid Box
    • Hidden (Trick) Lock Locking Copperhead Frame