Lever force F at a point "A" located by the coordinate vector r on the bar. The lever then exerts an output force F at the point "B" located by r. The rotation of the lever about the fulcrum "P" is defined by the rotation angle "θ" in radians. Let the coordinate vector of the point "P" that defines the fulcrum be r, and introduce the lengths which are the distances from the fulcrum to the input point "A" and to the output point "B", respectively. Now introduce the unit vectors e and e from the fulcrum to the point "A"
Colt Ring Lever rifles ring lever located in front of the trigger. This lever, when pulled, would index the cylinder to the next position and cock the internal hidden hammer. Although complicated in design and prone to failures, fifty First Model rifles were ordered by the U.S. Army for use against Seminole warriors in the Second Seminole War. The First Model Ring Lever rifle features a octagonal barrel with a browned finish. The finishes of the other metal parts are blued. The rifle features a circular trigger guard, which lies behind the ring lever. The ring-shaped lever is used by the operator to both