Lever Lever A lever ( or ) is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the location of fulcrum, load and effort, the lever is divided into three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage
Lever action Mossberg produces the 464 in centerfire .30-30 and rimfire .22. While the term "lever-action" generally implies a repeating firearm, it is also sometimes —and incorrectly— applied to a variety of single-shot or falling-block actions that use a lever for cycling, such as the Martini–Henry or the Ruger No. 1. Probably the first lever-action rifles on the market were Colt's 1st and 2nd Model Ring Lever rifles, both cap and ball rifles, produced by the Patent Arms Mfg. Co. Paterson, N.J.-Colt's Patent between 1837 and 1841. The ring-lever was located in front of the trigger. This loading-lever, when pulled, would index