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

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Description: 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.
Title: Patent no. 4945 - Apparatus for Passing Suspension-Wires for Bridges Across Rivers
Credit: 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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Usage Terms: Public domain
License: Public domain
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Niagara Falls Suspension Bridge

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