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
Colt Ring Lever rifles a year after acquiring fifty First Model rifles, Colonel Harney remarked that all but two were in good working order. Later in July 1839, however, a surprise Seminole attack led to the loss of thirty Ring Lever rifles, though fourteen were eventually recovered. In spite of the rifle's reliability problems, support for Colt's rifles was garnered from field officers, especially from Lieutenant Colonel Harney. Harney commented on Colt's Ring Lever rifle favorably, stating: "I honestly believe that, but for these arms, the Indians would now be luxuriating in the Everglades of Florida." Colt capitalized on Harney's testimony to produce a