A crane is a mechanical lifting device equipped with a winder,
wire ropes and sheaves that can be used both to lift and lower
materials and to move them horizontally. It uses one or more
simple machines to create mechanical advantage and thus move
loads beyond the normal capability of a human. Cranes are commonly
employed in the transport industry for the loading and unloading
of freight; in the construction industry for the movement of
materials; and in the manufacturing industry for the assembling
of heavy equipment.
The development of the kitchen has been
intricately and intrinsically linked with the development of
the cooking range or stove. Until the 18th century, open fire
was the sole means of heating food, and the architecture of
the kitchen reflected this. When technical advances brought
new ways to heat food in the 18th and 19th centuries, architects
took advantage of newly-gained flexibility to bring fundamental
changes to the kitchen. Water on tap only became gradually available
during industrialization; before, water had to be collected
from the nearest well and heated in the kitchen.