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Naval Base Philadelphia-Philadelphia Naval Shipyard, 350-Ton Hammerhead Crane, League Island, Philadelphia, Philadelphia County, PA
Summary
Significance: The crane was the largest in the world when it was completed and is a landmark in American engineering. Roller bearings support a large circular gear mechanism located on top of the portal and allow the crane boom to rotate. The boom and cantilevered trolley ways of the crane are supported by an external framework of steel girders anchored to the circular gear. The crane hoists can be racked in or out along these trolley ways...
Survey number: HAER PA-387-F
Tags
Date
1969 - 1980
Contributors
Historic American Engineering Record, creator
Location
Philadelphia, Pennsylvania, United States, 39.89484, -75.16101
Source
Library of Congress
Copyright info
No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html
