File:Patent no. 4945 - Apparatus for Passing Suspension-Wires for Bridges Across Rivers.jpg

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Description
English: John Roebling's patent for his apparatus to draw wires across gaps by means of traveling sheaves; this is one part of the process used in the construction of the Niagara Falls Suspension Bridge.
Date
Source Roebling, John (1847-01-26). "Patent no. 4945: Apparatus for Passing Suspension-Wires for Bridges Across Rivers". p. 1. United States Patent Office. Retrieved on 2009-07-27. Also available as U.S. Patent 4945.
Author John Augustus Roebling (1806–69)
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
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26 January 1847Gregorian

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current11:41, 27 July 2009Thumbnail for version as of 11:41, 27 July 20091,223 × 941 (109 KB)Jappalang{{Information |Description={{en|1=John Roebling's patent for his apparatus to draw wires across gaps by means of traveling sheaves; this is one part of the process used in the construction of the Niagara Falls Suspension Bridge.}} |Source={{cite journal |
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