Lever a place to stand, and I shall move the Earth with it' is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). It is assumed that in ancient Egypt, constructors used the lever to move and uplift obelisks weighing more than 100 tons. A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals
Lever Brothers Factory was founded in 1885 by William Hesketh Lever. Lever Brothers Ltd was incorporated in Australia on 21 June 1894. Soon after this, in 1897, Lever Brothers established a plant at Balmain to extract oil from copra which was shipped back to Liverpool, England. In 1900, the Balmain plant began to manufacture Sunlight soap and glycerine, and other products followed. Early in 1914, William Lever visited Melbourne as part of a worldwide tour of Lever interests. During the visit he met with J.Kitchen & Sons, who were established soap manufacturers, and offered to amalgamate the two firms. After consideration, it was