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32-466: [REDACTED] Look up rotary in Wiktionary, the free dictionary. Rotary may refer to: Science, engineering and technology [ edit ] Rotary motion Rotary dial , a rotating telephone dial Rotary engine (disambiguation) , multiple types of engines called "rotary" Rotary latch Rotary milking shed, a type of milking shed used in

64-494: A Norfolk latch, the handle is fitted to a backplate independently of the thumb piece. Introduced around 1800–1820, Norfolk latches, originating in the English county of the same name, differ from the older Suffolk latch, which lacked a back plate to which the thumbpiece is attached. A crossbar , sometimes called a bolt or draw bolt , is a historically common and simple means of barring a door. In its most primitive form it employs

96-413: A bolt on its inboard end and pivoted up and down into open cleats, making it a form of latch . A "draw bolt" style closure adds a handle for sliding its bolt - the source of the term "bolting a door". A variant with a slot in the handle for dropping it over a hasp to secure it with a lock is known as an aldrop. Most modern draw bolts are made of metal, and may be used to secure a door from the outside or

128-401: A button-activated latch. Likewise a ballistic knife uses a strong latch to restrain a powerful spring from firing the blade as a projectile until triggered by opening the latch. A gravity knife relies on a latch to hold the folding blade in an open position once released. A butterfly knife uses a single latch to hold the folding blade both open and closed, depending on the position of

160-458: A cabin hook in such a situation, one should keep in mind that a fire-resistant door is an expensive and heavy item, and it only works as a fire door if it is closed during a fire. To hold an often heavy fire door open simply, electromagnetic door holders are used that release when a building's fire alarm system is activated. As cabin hooks must be released manually, they are impractical for fire doors. Also named draw latch or draw catch. It has

192-405: A claw or a loop that catches the strike plate (named catch plate in this case) when reaching a certain position. A pawl is a latch that will allow movement in one direction, but prevents return motion. It is commonly used in combination with a ratchet wheel. A latch of some type is typically fitted to a door or window . Many types of weaponry incorporate latches with designs unique to

224-427: A door open, like on ships to prevent doors from swinging and banging against other woodwork as the ship moves due to wave action. This usage spread also to other domains, where a door was required to be held open or a self-closing device is used to close the door. Many buildings are built with fire-resistant doors to separate different parts of buildings and to allow people to be protected from fire and smoke. When using

256-410: A hammer to fire the new round. Break open actions are universal in double-barrelled shotguns , double-barrelled rifles and combination guns , and are also common in single shot rifles, pistols , and shotguns , and can also be found in flare guns , grenade launchers , air guns and some older revolver designs. Several latch designs have been used for loading revolvers . In a top-break revolver,

288-468: A knife of this type may require significantly more force than the weapons variety as an added safety feature. Crossbows incorporate a type of latch to hold the drawn bowstring prior to firing. Automobiles incorporate numerous special-purpose latches as components of the doors, hood/bonnet , trunk/boot door , seat belts , etc. On passenger cars, a hood may be held down by a concealed latch. On race cars or cars with aftermarket hoods (that do not use

320-405: A plank or beam held by or placed onto open cleats on a door, which is shifted to be held fast by a corresponding cleat on an adjacent jamb. A crossbar for double doors employs the same principle, but, in most cases, must be manually set in place and removed due to its width being greater than both doors. A crossbar for a single jamb may be "captured" on the door by U-shaped bails, or anchored by

352-404: A secure bond between cylinder and frame. To fire a revolver, generally the hammer is first manually cocked and latched into place. The trigger, when pulled, releases the hammer, which fires the round in the chamber. Various types of knives with folding or retractable blades rely on latches for their function. A switchblade uses an internal spring to produce the blade which is held in place by

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384-482: A simple thumb-actuated lever and commonly used to hold wooden gates and doors closed. The Suffolk latch originated in the English county of Suffolk in the 16th century and stayed in common use until the 19th century. They have recently come back into favour, particularly in traditional homes and country cottages. They were common from the 17th century to around 1825, and their lack of a back plate made them different from

416-599: A type of milking shed used in the dairy industry Rotary snowplow , one type of railroad snowplow used especially for deep snow removal Rotary system , a type of pre-electronic telephone switch Rotary table (drilling rig) , a device used to apply directional force to a drill string Rotary tiller , a motorised cultivator Rotary woofer , a type of loudspeaker capable of producing very low frequency sound Rotary wing aircraft Organisations and enterprises [ edit ] Rotary International , or Rotary Club, an international service organization founded in

448-432: Is a single-throw bolt. The bolt can be engaged in its strike plate only after the door is closed. The locking mechanism typically prevents the bolt from being retracted by force. A slam latch uses a spring and is activated by the shutting or slamming of a door. Like all latches, a slam latch is a mechanism to hold a door closed. The slam latch derives its name from its ability to slam doors and drawers shut without damaging

480-499: Is different from Wikidata All article disambiguation pages All disambiguation pages rotary [REDACTED] Look up rotary in Wiktionary, the free dictionary. Rotary may refer to: Science, engineering and technology [ edit ] Rotary motion Rotary dial , a rotating telephone dial Rotary engine (disambiguation) , multiple types of engines called "rotary" Rotary latch Rotary milking shed,

512-497: Is different from Wikidata All article disambiguation pages All disambiguation pages Rotary latch A latch is not the same as the locking mechanism of a door or window, although often they are found together in the same product. Latches range in complexity from flexible one-piece flat springs of metal or plastic, such as are used to keep blow molded plastic power tool cases closed, to multi-point cammed latches used to keep large doors closed. A deadbolt latch

544-399: Is needed. Electronic cam locks are an alternative to mechanical cam locks. The appearance of the electronic cam lock is similar to the mechanical cam lock, but it is different in the lock cylinder. The keyhole of a mechanical cam lock is usually the same as an ordinary padlock. A physical key is used to unlock the lock. The physical key has a notch or slot corresponding to the obstacle in

576-568: The dairy industry Rotary snowplow , one type of railroad snowplow used especially for deep snow removal Rotary system , a type of pre-electronic telephone switch Rotary table (drilling rig) , a device used to apply directional force to a drill string Rotary tiller , a motorised cultivator Rotary woofer , a type of loudspeaker capable of producing very low frequency sound Rotary wing aircraft Organisations and enterprises [ edit ] Rotary International , or Rotary Club, an international service organization founded in

608-487: The United States Rotary Foundation , non-profit foundation of Rotary International Rotary Scholarships , scholarships offered by the organization Rotary Watches , a Swiss watchmaker Other uses [ edit ] Rotary (intersection) or roundabout, a circular roadway intersection "The Rotary", a song by Andy Partridge from Take Away / The Lure of Salvage Topics referred to by

640-413: The United States Rotary Foundation , non-profit foundation of Rotary International Rotary Scholarships , scholarships offered by the organization Rotary Watches , a Swiss watchmaker Other uses [ edit ] Rotary (intersection) or roundabout, a circular roadway intersection "The Rotary", a song by Andy Partridge from Take Away / The Lure of Salvage Topics referred to by

672-435: The belt which constrains the occupant to the body of the car. Particularly in rear seats slightly different latches may be used for each seat in order to prevent adjacent seatbelts from being attached to the wrong point. Inertial seatbelt release is a potential circumstance where, in a collision, the seatbelt latch can unintentionally come loose leading to potential injury of the passenger. An additional risk of seatbelt latches

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704-422: The cam lock, allowing it to rotate freely in the lock. Different from mechanical cam locks, electronic cam locks use an electronic key to unlock. The key needs to be programmed which contains the user, unlocking date, and time period. The electronic cam lock has no mechanical keyhole, only three metal contacts are retained. When unlocking, the three contacts on the head end of the electronic key are in contact with

736-450: The factory latch system) the hood may be held down by hood pins. The term Nader bolt is a nickname for the bolt on vehicles that allows a hinged door to remain safely latched and closed. It is named after consumer rights advocate and politician Ralph Nader , who in 1965 released the book Unsafe at Any Speed which claimed that American cars were fundamentally flawed with respect to operator safety. Latches in seatbelts typically fasten

768-540: The frame is hinged at the bottom front of the cylinder . The frame is in two parts, held together by a latch on the top rear of the cylinder. For a swing out cylinder, the cylinder is mounted on a pivot that is coaxial with the chambers, and the cylinder swings out and down. Some designs, such as the Ruger Super Redhawk or the Taurus Raging Bull , use a latches at the front and rear of the cylinder to provide

800-450: The handles; by rotating 180 degrees the same latch can be used in either configuration. Butterfly knife latches have numerous variations, including magnetic variants and some which can be opened via a spring when the handles are squeezed together. Utility knives also often use a latch to hold a folding knife both open and closed. This allows it to be locked in orientation to the handle when in use, but also safely stowed otherwise. To open

832-418: The in. A cabin hook is a hooked bar that engages into a staple. The bar is usually attached permanently to a ring or staple that is fixed with screws or nails to woodwork or a wall at the same level as the eye screw. The eye screw is usually screwed into the adjacent wall or onto the door itself. Used to hold a cupboard , door or gate open or shut. A cabin hook is used in many situations to hold

864-438: The latch. A slam latch is rugged and ideal for industrial, agricultural and construction applications. A cam lock is a type of latch consisting of a base and a cam . The base is where the key or tool is used to rotate the cam, which is what does the latching. Cams can be straight or offset; offset cams are reversible. Commonly found on garage cabinets, file cabinets, tool chests, and other locations where privacy and security

896-473: The later, and neighbouring Norfolk latch (introduced 1800–1820). Both the Suffolk latch and Norfolk latch are thought to have been named by architectural draughtsman William Twopenny (1797–1873). Many of these plates found their way into America and other parts of the world. A Norfolk latch is a type of latch incorporating a simple thumb-actuated lever and commonly used to hold wooden gates and doors closed. In

928-409: The same term [REDACTED] This disambiguation page lists articles associated with the title Rotary . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Rotary&oldid=1137300809 " Category : Disambiguation pages Hidden categories: Short description

960-409: The same term [REDACTED] This disambiguation page lists articles associated with the title Rotary . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Rotary&oldid=1137300809 " Category : Disambiguation pages Hidden categories: Short description

992-453: The three contacts on the electronic cam lock. At this time, the key will supply power to the electronic cam lock and read the ID number of the electronic cam lock for verification and match. If successful, the lock can be unlocked. The emergence of electronic cam locks aims to improve the safety and functionality of traditional mechanical cam locks. A Suffolk latch is a type of latch incorporating

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1024-412: The weapon. Firearms require specialized latches used during loading and firing of the weapon. A break-action firearm is one whose barrels are hinged and a latch is operated to release the two parts of the weapon to expose the breech and allow loading and unloading of ammunition. It is then closed and re-latched prior to firing. A separate operation may be required for the cocking and latching-open of

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