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  2. Hawkins Electrical Guide - Wikipedia

    en.wikipedia.org/wiki/Hawkins_Electrical_Guide

    The Hawkins Electrical Guide was a technical engineering book written by Nehemiah Hawkins, first published in 1914, intended to explain the highly complex principles of the new technology of electricity in a way that could be understood by the common man.

  3. Steam locomotive components - Wikipedia

    en.wikipedia.org/wiki/Steam_locomotive_components

    Valve gear Motion (UK+) System of rods and linkages synchronising the valves with the pistons and controls the running direction and power of the locomotive. [2] [6]: 281–356 [3]: 89 Connecting rod / Main rod Steel arm that converts the reciprocating motion of the piston into a rotary motion of the driving wheels.

  4. Glossary of North American railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_North_American...

    When the engineer makes an emergency brake application, he moves his brake valve to the emergency, "Big Hole", position. The result of putting the air brake valve into the Big Hole position will cause the instantaneous total loss of all brake air pressure in the train line which causes the brakes on all train cars and engines to automatically ...

  5. Railway air brake - Wikipedia

    en.wikipedia.org/wiki/Railway_air_brake

    A comparatively simple brake linkage. In the air brake's simplest form, called the straight air system, compressed air pushes on a piston in a cylinder. The piston is connected through mechanical linkage to brake shoes that can rub on the train wheels, using the resulting friction to slow the train.

  6. Steam brake - Wikipedia

    en.wikipedia.org/wiki/Steam_brake

    A steam brake is a type of brake for steam locomotives and their tenders, whereby a steam cylinder works directly on the brake linkages.. Steam brakes were primarily used on railways where vacuum brakes were used to brake the train, but where there was no vacuum brake on the steam locomotive itself, as for example in the United Kingdom, or where there was only a cable-operated brake (e.g. a ...

  7. Valve actuator - Wikipedia

    en.wikipedia.org/wiki/Valve_actuator

    The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...

  8. Tank steering systems - Wikipedia

    en.wikipedia.org/wiki/Tank_steering_systems

    The T-34 was one of the most successful tanks designed specifically to use the clutch steering system. The simplest single-engine steering system in mechanical terms, and almost universally used on early tank designs, was the combination of a brake and a clutch connected to steering controls.

  9. Shuttle valve - Wikipedia

    en.wikipedia.org/wiki/Shuttle_valve

    Winch brake circuit: a shuttle valve provides brake control in pneumatic winch applications. When the compressor is operated the shuttle valves direct air to open the brake shoes. When the control valve is centered, the brake cylinder is vented through the shuttle valve, and the brake shoes are allowed to close. [clarification needed]

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