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
Darcy Lever that Levers daughter had inherited them and thus they passed to her husband John Bradshaw. However the land came to them, the family estate grew and today they continue to hold large parts of the Bolton area. At this time, 1666, Robert Lever had eight hearths liable to tax, James Bradshaw and John Crompton had seven each and Lawrence Fogg six. The rest of the township was made up of 12 more heaths. The land-tax return of 1786 shows that James Bradshaw and John Peploe Birch were the chief proprietors of Darcy Lever, between them they paid about half the