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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.
A plane from Embree's B-17 squadron, which was forced to land at Hickham, is shown in the foreground. Embree first enlisted in the Army Air Corps in 1936. [1] By 1941, the year of the Attack on Pearl Harbor, Embree had become a staff sergeant. [1] Embree snapped a number of pictures of the attack, but eventually stopped.
Investigators head into the debris field at the site of a commercial plane crash near Shanksville, Pennsylvania, September 11, 2001. The crash is one of four planes that were hijacked as part of a ...
The FBI has recently made public several photos from the investigation inside the Pentagon after the attacks of September 11, 2001. The images, posted to the FBI's records vault, give a new look ...
After an attempt to drill a hole into a barrel-bomb fails, setting it off and damaging the ship, Fallon decides to split up his team with each man working simultaneously on each of the remaining devices around the ship, Fallon going first with each stage of the defusing operation and coordinating his men by radio link, with the aim that if he ...
The span collapsed this week when it was struck by a cargo ship. An aerial photo of the crane Chesapeake 1000, provided by the Westchester County Police, shot the day before the tugboat Specialist ...
It was a luffing-jib tower crane manufactured by Favco that was 200 feet (61 m) tall at the time of the collapse. The accident occurred when workers were attaching a new steel collar to anchor it to the building at the 18th floor, as part of an operation to extend the crane upwards. [ 6 ]