Instablade Free Pocket Knife

Types of Pocket Knives

In general, a pocket knife, also known as a folding knife, is a type of knife where the blade will fold away inside the handle. They are small enough to be carried in your pocket, hence the name pocket knife. However, there are several different types of pocket knives. In this article, I will explain the difference in a traditional pocket knife or slip joint, a lock back pocket knife, a liner locking pocket knife, and an assisted opening pocket knife.
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Most of you have probably seen and even used a traditional pocket knife. They are usually between three and five inches long, and consist of one to three blades. Now this is generally speaking. There are some that are longer and have more blades. The traditional pocket knife, or slip joint, uses a spring device between the handles to hold the knife blade open. When the blade of the knife is fully open, the spring holds the blade open. However, the blade is not locked in place. When enough pressure is put on the back of the blade, it will close.

A lock back pocket knife is an advancement of the traditional pocket knife. It also has a spring device to hold the blade open. However, the spring of a lock back has a hook made in it, and the blade has a notch in it. When fully opened the hook and notch line up, which in turn locks the blade in place. The blade will then stay locked until the operator presses on an exposed part of the spring, located on the back of the knife. When you press this exposed part of the spring, it disengages the hook and notch. You can then fold the blade back into the handle. This makes a lock back knife safer than a traditional pocket knife, because the blade cannot close by accident.

Another popular type of locking pocket knife is the liner lock. The liner lock has a leaf cut out of the liner that acts as a spring. When the blade is fully opened, this leaf springs over in front of the bottom of the blade, locking it in place. So it is actually the liner of the knife that is holding it open. Hence the name, liner lock. To close the knife, you push this leaf of the liner over, usually with your thumb, while pushing on the back of the blade. The liner is then out of the way, allowing the blade to fold back into the handle. These knives are also safe from accidental closings.

Last, but certainly not least, are the assisted opening pocket knives. The name practically says it all for these knives. These knives use a type of technology that springs the blade open once started by the operator. Different knife brands have their own systems, such as Ken Onion's SpeedSafe technology for Kershaw, or F.A.S.T. (forward action spring technology) technology developed by Butch Vallotton for Gerber. These knives are usually liner locking knives. People have compared them to a switchblade, but you do not push a button to open the knife. Nor does the blade come out of the end of the handle, but instead the side of the handle like other pocket knives. Many of them have thumb studs on the side of the blade. Once you start to open the blade by pushing on the thumb stud, the technology assists the opening by springing the blade forward. Hence the name, assisted opening knife.

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