Compound lever the force of pushing back the stick to the levers and they rub against the wheels, using friction to slow and eventually stop the train. These are everyday applications of this mechanism. A piano key is a compound lever of the first-class, since the fulcrum is between the weight to be moved and the power. The purpose of this lever is to translate a small movement (depression of the key) into a larger and fast movement of the hammer on the strings. The quality of the resulting tone depends on whether the final speed is brought about by gradual or
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