A steam hammer is a power hammer driven by steam, used to shape forgings. It consists of a hammer-like piston located within a cylinder. The hammer is raised by the pressure of steam injected into the lower part of a cylinder and falls down with a force by removing the steam. Usually, the hammer is made to fall faster by injecting steam into the upper part of the cylinder. Steam hammers that fall by their own weight are called steam drop hammers. Steam hammers vary greatly in weight from 45 kilograms to 90 metric tons, The steam hammer was one of many machine tools invented around this time which allowed for large scale industrialisation and the use of machines to build machines. Using the same principles of operation, Nasmyth also developed a revolutionary steam powered pile-driving machine. At its first use at Devonport, a dramatic contest was carried out. His engine drove a pile in four and half minutes compared to the twelve hours that the conventional method required.
This machine is used at engine steamworks and many other places involving steam, the Smelter's Yard neither the foundry didn't have property of this machine.