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A Linerlock is a folding knife with a side-spring lock that can be opened and closed with one hand without repositioning the knife in the hand. The lock is self-adjusting for wear. The modern Linerlock traces its lineage to the late 19th century, but in the 1980s the design was improved by American custom knifemaker Michael Walker .
The original LAWKS mechanism consists of a switch on the handle of the knife, connected to the liner lock. When pulled back, the liner lock can easily be pushed back to close the knife. But when the safety switch is pushed forward, it acts as an extra lock ensuring the linerlock can not be used to close the knife, making the folding knife a ...
An assisted-opening knife is a type of folding knife which uses an internal mechanism to finish the opening of the blade once the user has partially opened it using a flipper or thumbstud attached to the blade. [1] When the knife is in the closed position, the blade is held in place by means of torsion springs and an additional blade lock ...
Most notably, Walker is known for the invention of the Walker Linerlock in 1981, which has since become the industry standard in folding knife mechanisms. [2] [5] What sets Walker's design apart is a long split in one of the liners which acts as a leaf-spring in the liner of the knife accompanied. This feature cuts down on mechanical stress.
Folding "false" gravity knife. The illustration shows the internal parts of a 1960s Japanese import 'false' gravity knife. Other knives may be considered to be 'false' gravity knives, including certain lock-back and liner lock folding knives that will not lock a blade in both open and closed positions.
The Swiss Army Knife was not the first multi-use pocket knife. In 1851, in Moby-Dick (chapter 107), Herman Melville mentions the "Sheffield contrivances, assuming the exterior – though a little swelled – of a common pocket knife; but containing, not only blades of various sizes, but also screwdrivers, cork-screws, tweezers, bradawls, pens, rulers, nail files and countersinkers."
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A collection of pocketknives A Swiss Army knife made by Victorinox. A pocketknife is a knife with one or more blades that fold into the handle. They are also known as jackknives, folding knives, EDC knife, or may be referred to as a penknife, though a penknife may also be a specific kind of pocketknife.