Since the beginning of mankind, as weaponry started being developed in order for people to protect themselves from predators, pocket knives have existed, with a different name of course. Pocket knives are basically small knives that are easy to carry around. They might have been carved out of wood or molded into sharp, pointy weapons from different metals while the handles made from wood or bones of animals. These knives are known as peasant knives, whose blades pivot around the junction. Then we have the slip knot knife, which was a modification of the peasant knife. Experts worked around making the blades of the knives more stable, keeping them in place when being used and folding in with the handle after. They did this by attaching a back spring to the knife that allows the knife to stay open when needed.
Then we have the Barlow knife, which has a handle of an ovular shape to increase the grip of the user, included in it, is the tip point and the pen blade. The famous Boy Scout knife, known as the camper knife or more famously known as the Swiss knife, has various different types and kinds of blades for multipurpose use. Apart from having different kinds of blades, camper knives have other tools attached to them while being outdoors or being a part of outdoor activities. These tools may include, a small pair of scissors, a can opener, a screwdriver, a mini saw, etc. This is a multipurpose pocket knife. The congress knife on the other hand, also has more than one blade. It includes a spear point, sheepsfoot, coping, and pen blades. Lastly, we have the trapper knife, which has two blades that hinge at the same joint. Tapper knives are mostly used in skinning hides off animals. Any of these kinds of blades, or similar ones, can be found on survival prep life.