The highest elevation of a railway.

A fixed point or surface, affording a relatively immovable object against which a body abuts or presses while resisting or moving in a contrary direction, for example, an end arch of a bridge.

Invented as the "digester" by Denis Papin of Blois, France, in 1695. It was improved by Thomas Newcomen, 1705, and James Watt, 1769. Newcomen's engine was the first effective steam-engi [..]

A shaft or rod on which a wheel is placed.

Steel produced by an industrial process in which impurities are removed by forcing a blast of air through molten iron. The process was patented by Henry Bessemer in 1855.

An explosive powder consisting of saltpeter, sulfur, and charcoal.

A person who forges objects of iron, including items essential to the building of a railroad, such as rail spikes.

A powder for blasting purposes composed of various forms of carbon and metallic salts.

A closed vessel in which water (or other fluid) is heated. The boiler for raising steam may be called a steam-generator.

A contrivance for stopping the motion of a car-wheel by friction applied thereto.