a framework erected over an oil well to allow drill tubes to be raised and lowered
A hangman; a temporary crane to remove goods from the hold of a vessel So called from Derrick, the Tyburn hangman early in the seventeenth century, who for more than a hundred years gave his name to gibbets (See Hangman ) "He rides circuit with the devil, and Derrick must be his host, and Tyborne the inn at which he will light " - Bellman of London, 1616 Derwentwater Lord Derwentwater's lights The Aurora borealis; so called from James, Earl of Derwentwater, beheaded for rebellion February 24th, 1716 It is said that the northern lights were unusually brilliant on that night
Metal tower erected vertically above a well for the purpose of lifting and lowering tubes and tools into the well
A mast, spar, or tall frame, supported at the top by stays or guys, with suitable tackle for hoisting heavy weights, as stones in building
An apparatus designed to hoist heavy weights The general design of a derrick is similar to that of a post crane except that the boom is hinged at the heel which allows it to be set at any angle with the post The post of a derrick usually rotates with the boom
Lifting equipment on board a conventional vessel for loading and discharging cargo, consisting of a post attached to the deck and an inclined spar
The elongated pyramid of latticed steel mounted over the bore hole for drilling and well-servicing purposes
A derrick is a tower built over an oil well which is used to raise and lower the drill
The pyramidal structure or tower over a deep drill hole, such as that of an oil well
A derrick is a machine that is used to move cargo on a ship by lifting it in the air
a simple crane having lifting tackle slung from a boom a framework erected over an oil well to allow drill tubes to be raised and lowered