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2. John Birkinshaw - Wikipedia

   en.wikipedia.org/wiki/John_Birkinshaw

   John Birkinshaw (1777–1842) was a railway engineer from Bedlington, Northumberland noted for his invention of wrought iron rails in 1820 (patented on October 23, 1820). [ 1 ] Up to this point, rail systems had used either wooden rails, which were totally incapable of supporting steam engines, or cast iron rails typically only 3 feet in length.

3. History of the railway track - Wikipedia

   en.wikipedia.org/wiki/History_of_the_railway_track

   Cast iron rails, 4 feet (1.2 m) long, began to be used in the 1790s and by 1820, 15-foot-long (4.6 m) wrought iron rails were in use. The first steel rails were made in 1857 and standard rail lengths increased over time from 30 to 60 feet (9.1–18.3 m).

4. Tubular bridge - Wikipedia

   en.wikipedia.org/wiki/Tubular_bridge

   A tubular bridge is a bridge built as a rigid box girder section within which the traffic is carried. [1] Famous examples include the original Britannia Bridge over the Menai Strait, the Conwy railway bridge over the River Conwy, designed and tested by William Fairbairn and built by Robert Stephenson between 1846 and 1850, and the original Victoria Bridge in Montreal.

5. Plate girder bridge - Wikipedia

   en.wikipedia.org/wiki/Plate_girder_bridge

   In some cases, the plate girders may be formed in a Z-shape rather than I-shape. The first tubular wrought iron plate girder bridge was built in 1846-47 by James Millholland for the Baltimore and Ohio Railroad. [2] Plate girder bridges are suitable for short to medium spans and may support railroads, highways, or other traffic. Plate girders ...

6. Baulk road - Wikipedia

   en.wikipedia.org/wiki/Baulk_road

   A baulk road crossing showing the baulks (under the rails) and transoms (to maintain the gauge). Baulk road is the name given to a type of railway track or 'rail road' that is formed using rails carried on continuous timber bearings, as opposed to the more familiar 'cross-sleeper' track that uses closely spaced sleepers or ties to give intermittent support to stronger rails.

7. Ironwork - Wikipedia

   en.wikipedia.org/wiki/Ironwork

   Ironwork is any weapon, artwork, utensil, or architectural feature made of iron, especially one used for decoration. There are two main types of ironwork: wrought iron and cast iron. While the use of iron dates as far back as 4000 BC, it was the Hittites who first knew how to extract it (see iron ore) and develop weapons.