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A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Kirow Ardelt GmbH Eberswalde, referred to as Ardelt, is a German crane manufacturer. The company specialises in manufacturing double jib level luffing cranes which are based on the patented double jib principle. Ardelt has produced more than 4,700 harbour cranes. [1] Ardelt also makes single jib-level luffing cranes and balancer cranes.
en:Stothert & Pitt electric dockside crane with Toplis level luffing gear. Bristol Industrial Museum: Date: Photo June 2004. Source: Cropped from Image:Bristol pw from ms.jpg so as to show a better close-up of a single crane. Author: Joe D (original photographer) Permission (Reusing this file)
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One of them, a level luffing crane built in 1951 by Stothert & Pitt, is thought to be the only one of its type in New Zealand. [ 17 ] [ 31 ] There is a Stothert & Pitt tripod gantry crane , one of ten bought in 1966 that operated on Glasgow Wharf until containerisation arrived, [ 31 ] [ 32 ] : 42 and the third crane is a Series 520 Straddle ...
This specific example uses a level luffing mechanism to maintain the load at approximately the same vertical height as the jib moves through its range of travel. A jib or jib arm is the horizontal or near-horizontal beam used in many types of crane to support the load clear of the main support. [1] [2] An archaic spelling is gib. [3]
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The earliest known use of the area dates to 1725 when George Burrington operated a plantation following his first term as colonial governor of the then Province of North Carolina. It later was known as Snows Point when owned by rice planter Robert Snow. During the Civil War, the area hosted an artillery battery protecting the Cape Fear River ...