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  2. Espagnolette - Wikipedia

    en.wikipedia.org/wiki/Espagnolette

    Espagnolette locking device. An espagnolette is a locking device, normally mounted on the vertical frame of a French door or casement window.A handle or knob is connected to a metal rod mounted to the surface of the frame, about a metre above the floor.

  3. Nyloc nut - Wikipedia

    en.wikipedia.org/wiki/Nyloc_nut

    A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut with a nylon collar that increases friction on the screw thread. The nylon collar insert is placed at the end of the nut, with an inner diameter (ID) slightly smaller than the major diameter of the screw.

  4. Casement window - Wikipedia

    en.wikipedia.org/wiki/Casement_window

    A casement window is a window that is attached to its frame by one or more hinges at the side. [1] They are used singly or in pairs within a common frame, in which case they are hinged on the outside. Casement windows are often held open using a casement stay. Windows hinged at the top are referred to as awning windows, and ones hinged at the ...

  5. Crash bar - Wikipedia

    en.wikipedia.org/wiki/Crash_bar

    Crash bars offer several configurations for latching to the door frame. Vertical rods can be affixed to crash bars allowing both doors to be opened with no center clearance obstruction. When the bar is depressed, a chord within the vertical rod gets pulled, which lowers a latch at the top and/or bottom and allows the door to open.

  6. Aircraft canopy - Wikipedia

    en.wikipedia.org/wiki/Aircraft_canopy

    The bubble canopy of a Lockheed Martin F-22 Raptor Canopy of an F-22 Raptor. An aircraft canopy is the transparent enclosure over the cockpit of some types of aircraft.An aircraft canopy provides a controlled and sometimes pressurized environment for the aircraft's occupants, and allows for a greater field of view over a traditional flight deck.

  7. Glossary of locksmithing terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_locksmithing_terms

    The lock housing is the part of the lock that does not move when the lock is opened. It is responsible for transferring the action of the key to the bolt. [7] Master pin In a pin tumbler lock, a master pin is an optional, usually short, disk-like pin placed between the top and bottom pins. Its purpose is to allow two differently-cut keys to ...

  8. Door security - Wikipedia

    en.wikipedia.org/wiki/Door_security

    A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions. Door ...

  9. Lever frame - Wikipedia

    en.wikipedia.org/wiki/Lever_frame

    A mechanical lever frame inside the signal box at Knockcroghery in Ireland Waterloo station A signalbox, LSWR (Howden, Boys' Book of Locomotives, 1907). Mechanical railway signalling installations rely on lever frames for their operation to interlock the signals, track locks [1] and points to allow the safe operation of trains in the area the signals control.