An old engraving showing a floating derrick. It is from a Victorian mechanical engineering book of the 1880s. In this illustration the derrick is lifting a huge granite stone block in New York harbour, USA to facilitate in the building of the river walls In 1870 the Department of Docks to oversaw waterfront development. Most derricks have at least two components, a mast or self-supporting tower, and a boom. To lift a load, a line and hook – as with a crane. Derricks are often found on ships and at docks. Derricks mounted on dedicated vessels are also called sheerlegs.
An old engraving showing a floating derrick. It is from a Victorian mechanical engineering book of the 1880s. In this illustration the derrick is lifting a huge granite stone block in New York harbour, USA to facilitate in the building of the river walls In 1870, the city established the Department of Docks to oversee waterfront development, with George B McClellan as the first engineer in chief. Most derricks have at least two components, either a guyed or rigged mast or self-supporting tower, and a boom hinged at its base. To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a crane. Derricks are commonly found on ships and at dock facilities. Large derricks mounted on dedicated vessels are known as floating derricks or sheerlegs. The term is also applied to the framework supporting a drilling apparatus in an oil rig. The derrick derives its name from a type of gallows named after Thomas Derrick, an Elizabethan era English executioner.
Size: 2758px × 4252px
Location: New York City, USA
Photo credit: © M&N / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1800s, 19th, american, black, build, building, century, city, crane, derrick, device, dock, docks, early, engineering, engraving, equipment, float, floating, harbor, harbour, heavy, historical, history, hundreds, illustration, industrial, industry, lift, lifting, machine, machinery, maritime, mast, mechanical, nineteenth, revolution, river, sheerlegs, steam, stone, tower, usa, vessel, victorian, walls, water, waterfront, white, york
