Image:Railroad coupler diagram.jpg

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Diagram of a knuckle coupler designed by Eli H. Janney.

Image from the application for U.S. Patent 138,405, filed 1 April 1873.

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current 18:23, 31 March 2005 876×452 (52 KB) Slambo ( Talk | contribs) (Diagram of a knuckle coupler designed by Eli H. Janney. Image from the application for {{US patent|138,405}}, filed April 1 1873. {{PD-US}})

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