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  2. Catenary maintenance vehicle - Wikipedia

    en.wikipedia.org/wiki/Catenary_Maintenance_Vehicle

    Both a crane and a movable platform can be seen on the vehicle's roof. A catenary maintenance vehicle (also known as a tower wagon or tower car) is a railroad maintenance of way vehicle that is used to maintain and inspect overhead line (also known as catenary) on electrified railroad or metro tracks. [1] [2] Such vehicles are typically self ...

  3. Crane Manufacturers Association of America - Wikipedia

    en.wikipedia.org/wiki/Crane_Manufacturers...

    Member companies represent industry leaders in the overhead crane market, serve the United States market from operations based in the United States, Canada, and Mexico. CMAA, formerly the Electric Overhead Crane Institute, is an incorporated organization of leading electric overhead traveling crane manufacturers in the United States and an ...

  4. Crane (machine) - Wikipedia

    en.wikipedia.org/wiki/Crane_(machine)

    An overhead crane being used in typical machine shop. The hoist is operated via a wired pushbutton station to move system and the load in any direction. An overhead crane, also known as a bridge crane, is a type of crane where the hook-and-line mechanism runs along a horizontal beam that itself runs along two widely separated rails. Often it is ...

  5. Heavy equipment - Wikipedia

    en.wikipedia.org/wiki/Heavy_equipment

    Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information. Heavy equipment has been used since at least the 1st century BC when the ancient Roman engineer Vitruvius described a crane in De architectura when it was powered via human or animal labor.

  6. Overhead crane - Wikipedia

    en.wikipedia.org/wiki/Overhead_crane

    An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments. An overhead crane consists of two parallel rails seated on longitudinal I-beams attached to opposite steel columns by means of brackets. The traveling bridge spans the gap. A hoist, the lifting component of a crane, travels along the bridge.

  7. American Airlines Flight 191 - Wikipedia

    en.wikipedia.org/wiki/American_Airlines_Flight_191

    American Airlines Flight 191 was a regularly scheduled domestic passenger flight from O'Hare International Airport in Chicago to Los Angeles International Airport.On the afternoon of May 25, 1979, the McDonnell Douglas DC-10 operating this flight was taking off from runway 32R at O'Hare International when its left engine detached from the wing, causing a loss of control, and the aircraft ...

  8. Camshaft - Wikipedia

    en.wikipedia.org/wiki/Camshaft

    A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines (to operate the intake and exhaust valves), [1] [2] mechanically controlled ignition systems and early electric motor speed controllers . Camshafts in piston engines are usually made from ...

  9. Hoist (device) - Wikipedia

    en.wikipedia.org/wiki/Hoist_(device)

    A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. The most familiar form is an elevator, the car of which is raised and lowered by a hoist mechanism.