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  2. Interlocking - Wikipedia

    en.wikipedia.org/wiki/Interlocking

    An interlocking system is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe. Interlocking is a safety measure designed to prevent signals and points/switches from being changed in an improper sequence. For example, interlocking would prevent a signal from being changed to indicate a ...

  3. Access mat - Wikipedia

    en.wikipedia.org/wiki/Access_mat

    Common dimensions are 8' x 14' and 8' x 16'. Thicknesses vary between suppliers from 4.5” to a full 6”. Swamp mats are produced by many small and medium-sized manufacturers, and quality varies dramatically within the industry. Rig mats, another variety of access mats, may also known as wood and steel mats or steel frame mats

  4. Rural King - Wikipedia

    en.wikipedia.org/wiki/Rural_King

    Rural King Supply is a farm supply store based in Mattoon, Illinois, United States. Founded in 1960, as of 2024, the chain has 135 stores in the U.S. states of ...

  5. Video matting - Wikipedia

    en.wikipedia.org/wiki/Video_matting

    Video matting is a technique for separating the video into two or more layers, usually foreground and background, and generating alpha mattes which determine blending of the layers. The technique is very popular in video editing because it allows to substitute the background, or process the layers individually.

  6. RFD-TV - Wikipedia

    en.wikipedia.org/wiki/RFD-TV

    RFD-TV is an American pay television channel owned by Rural Media Group, Inc. The channel features programming devoted to rural issues, concerns and interests. The channel's name is a reference to Rural Free Delivery, the name for the United States Postal Service's system of delivering mail directly to rural patrons.

  7. Fifth-wheel coupling - Wikipedia

    en.wikipedia.org/wiki/Fifth-wheel_coupling

    Modern fifth wheels allow the trailers to slide into the fifth wheel and lock into it very reliably when maintained and serviced properly. The engagement of the king pin into the fifth-wheel locking mechanism is the only means of connection between tractor and trailer; no other device or safety mechanism is used.

  8. Marston Mat - Wikipedia

    en.wikipedia.org/wiki/Marston_mat

    Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and landing strips (also misspelled as Marsden matting).

  9. Animal stall - Wikipedia

    en.wikipedia.org/wiki/Animal_stall

    A stall is an enclosure housing one or a few animals. [1]: 201 A building with multiple stalls for horses is called a stable. [1]: 200 A stable or barn which houses livestock is subdivided into stalls or pens. Freestanding stalls may be constructed inside a larger building, or be built into the structure, sometimes with the animals facing outward.