The smithy or forge was the workplace of a blacksmith or ironsmith, where iron was worked into useful objects such as weapons, armour in the Middle Ages and locks, hinges, spades and tools, iron horseshoes (machine-made horseshoes were introduced from USA in 1870s), grilles, gates, railings, metal parts for locomotives, coaches, waggons and carts. The blacksmith's raw material was wrought iron in bar form. The smithy comprised a hearth, bellows, anvil and bosh (quenching trough). A small forge had hand-operated bellows, a large industrial forge water-powered bellows, power hammer and shears (William Jones, 1996, Dictionary of Industrial Archaeology).