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78-491: Doorway or The Doorway may refer to: Portals [ edit ] Door -shaped entrance Doorway page , a type of webpage Trapdoor Geography [ edit ] Doorway, Kentucky , a community in the United States Arts, entertainment, and media [ edit ] Music [ edit ] Doorway , a 2007 album by Ron Block "Doorway",

156-534: A cryptographic key and wireless protocol. Smart locks have begun to be used more commonly in residential areas, often controlled with smartphones . Smart locks are used in coworking spaces and offices to enable keyless office entry. In addition, electronic locks cannot be picked with conventional tools. Locksmithing is a traditional trade, and in most countries requires completion of an apprenticeship . The level of formal education required varies from country to country, from no qualifications required at all in

234-429: A "security layer" that exceeds the reasonable gain of an intruder. Traditional key cutting is the primary method of key duplication. It is a subtractive process named after the metalworking process of cutting , where a flat blank key is ground down to form the same shape as the template (original) key. The process roughly follows these stages: Modern key cutting replaces the mechanical key following aspect with

312-495: A V-shape surrounding the keyhole. They are often called drunk man's lock , as these locks were, according to certain sources, designed in such a way a person can still find the keyhole in the dark, although this might not be the case as the ornaments might have been purely aesthetic. In more recent times similar locks have been designed. With the onset of the Industrial Revolution in the late 18th century and

390-480: A cylindrical key with precise notches along the surface; these moved the metal slides that impeded the turning of the bolt into an exact alignment, allowing the lock to open. The lock was at the limits of the precision manufacturing capabilities of the time and was said by its inventor to be unpickable. In the same year Bramah started the Bramah Locks company at 124 Piccadilly, and displayed the "Challenge Lock" in

468-411: A disc that allowed the key to pass but narrowed the field of view, hiding the levers from anybody attempting to pick the lock. The Chubb brothers also received a patent for the first burglar-resisting safe and began production in 1835. The designs of Barron and Chubb were based on the use of movable levers, but Joseph Bramah , a prolific inventor, developed an alternative method in 1784. His lock used

546-474: A door has an effect on production logistics, temperature and pressure control. High-speed cleanroom doors, usually consisting of a transparent material on a stainless steel frame, are used in pharmaceutical industries to allow passage between work areas while admitting minimal contaminants. The powerful high-speed doors have a smooth surface structure and no protruding edges, allowing minimal particle retention and easy cleaning. High-speed doors are made to handle

624-461: A double door. At Kuffeir near Bostra in Syria, Burckhardt found stone doors, 2.74 to 3.048 m (8.99 to 10.00 ft) high, being the entrance doors of the town. In Etruria many stone doors are referred to by Dennis. Ancient Greek and Roman doors were either single doors, double doors, triple doors, sliding doors or folding doors , in the last case the leaves were hinged and folded back. In

702-498: A double-acting pin tumbler lock was granted to American physician Abraham O. Stansbury in England in 1805, but the modern version, still in use today, was invented by American Linus Yale Sr. in 1848. This lock design used pins of varying lengths to prevent the lock from opening without the correct key. In 1861, Linus Yale Jr. was inspired by the original 1840s pin-tumbler lock designed by his father, thus inventing and patenting

780-469: A high number of openings, generally more than 200,000 a year. They must be built with heavy-duty parts and counterbalance systems for speed enhancement and emergency opening function. The door curtain was originally made of PVC, but was later also developed in aluminium and acrylic glass sections. High-speed refrigeration and cold-room doors with excellent insulation values have also been introduced for green and energy-saving requirements. In North America,

858-404: A key to open, going from outside to inside, or from public to private). It is important to get the hand and swing correct on exterior doors, as the transom is usually sloped and sealed to resist water entry, and properly drain. In some custom millwork (or with some master carpenters), the manufacture or installer bevels the leading edge (the first edge to meet the jamb as the door closes) so that

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936-645: A number of unique profiles requiring a specifically milled key blank to engage the lock's tumblers . Keys appear in various symbols and coats of arms, the best-known being that of the Holy See : derived from the phrase in Matthew 16:19 which promises Saint Peter , in Roman Catholic tradition the first pope , the Keys of Heaven . But this is by no means the only case. Some works of art associate keys with

1014-520: A parallel plane, or by spinning along an axis at the center of the frame) to allow or prevent ingress or egress. In most cases, a door's interior matches its exterior side. But in other cases (e.g., a vehicle door ) the two sides are radically different. Many doors incorporate locking mechanisms to ensure that only some people can open them (such as with a key ). Doors may have devices such as knockers or doorbells by which people outside announce their presence. Apart from providing access into and out of

1092-498: A power failure. Architectural doors have numerous general and specialized uses. Doors are generally used to separate interior spaces (closets, rooms, etc.) for convenience , privacy , safety , and security reasons. Doors are also used to secure passages into a building from the exterior, for reasons of climate control and safety. Doors also are applied in more specialized cases: Panel doors, also called stile and rail doors, are built with frame and panel construction. EN 12519

1170-430: A process in which the original key is scanned electronically, processed by software, stored, then used to guide a cutting wheel when a key is produced. The capability to store electronic copies of the key's shape allows for key shapes to be stored for key cutting by any party that has access to the key image. Different key cutting machines are more or less automated, using different milling or grinding equipment, and follow

1248-488: A set of levers to prevent the bolt from moving in the lock. In its simplest form, lifting the tumbler above a certain height will allow the bolt to slide past. Lever locks are commonly recessed inside wooden doors or on some older forms of padlocks, including fire brigade padlocks. A magnetic keyed lock is a locking mechanism whereby the key utilizes magnets as part of the locking and unlocking mechanism. A magnetic key would use from one to many small magnets oriented so that

1326-409: A set of obstructions, or wards, to prevent the lock from opening unless the correct key is inserted. The key has notches or slots that correspond to the obstructions in the lock, allowing it to rotate freely inside the lock. Warded locks are typically reserved for low-security applications as a well-designed skeleton key can successfully open a wide variety of warded locks. The pin tumbler lock uses

1404-490: A set of pins to prevent the lock from opening unless the correct key is inserted. The key has a series of grooves on either side of the key's blade that limit the type of lock the key can slide into. As the key slides into the lock, the horizontal grooves on the blade align with the wards in the keyway allowing or denying entry to the cylinder . A series of pointed teeth and notches on the blade, called bittings , then allow pins to move up and down until they are in line with

1482-480: A smaller flat key with serrated edges as well as pins of varying lengths within the lock itself, the same design of the pin-tumbler lock which still remains in use today. The modern Yale lock is essentially a more developed version of the Egyptian lock. Despite some improvement in key design since, the majority of locks today are still variants of the designs invented by Bramah, Chubb and Yale. A warded lock uses

1560-406: A solid timber frame, filled on one face, face with tongue and groove boards. Quite often used externally with the boards on the weather face. Flushing of a door means the door is flush with the face of the wall on either side. Generally, door swings , or handing, are determined while standing on the outside or less secure side of the door while facing the door (i.e., standing on the side requiring

1638-505: A song by Planningtorock from the album W (Planningtorock album) "The Doorway", a song by Neurosis from the album Times of Grace Other arts, entertainment, and media [ edit ] The Doorway (film) , a 2000 Roger Corman film "The Doorway" ( Mad Men ) , the season six, 2-hour premiere episode of the television series Mad Men Doorways , a proposed science-fiction series by George R.R. Martin Topics referred to by

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1716-456: A space, doors may have the secondary functions of ensuring privacy by preventing unwanted attention from outsiders, of separating areas with different functions, of allowing light to pass into and out of a space, of controlling ventilation or air drafts so that interiors may be more effectively heated or cooled, of dampening noise , and of blocking the spread of fire . Doors can have aesthetic , symbolic , ritualistic purposes. Receiving

1794-421: A top choice for many homeowners, largely because of the aesthetic qualities of wood. Many wood doors are custom-made, but they have several downsides: their price, their maintenance requirements (regular painting and staining) and their limited insulating value (R-5 to R-6, not including the effects of the glass elements of the doors). Wood doors often have an overhang requirement to maintain a warranty. An overhang

1872-404: Is a panel that fits into the doorway of a building , room , or vehicle . Doors are generally made of a material suited to the door's task. They are commonly attached by hinges , but can move by other means, such as slides or counterbalancing. The door may be able to move in various ways (at angles away from the doorway/portal, by sliding on a plane parallel to the frame, by folding in angles on

1950-552: Is a roof, porch area or awning that helps to protect the door and its finish from UV rays. Steel doors are another major type of residential front doors; most of them come with a polyurethane or other type of foam insulation core – a critical factor in a building's overall comfort and efficiency. Steel doors mostly in default comes along with frame and lock system, which is a high cost efficiency factor compared to wooden doors. Most modern exterior walls provide thermal insulation and energy efficiency , which can be indicated by

2028-404: Is activated: In addition to activation sensors, automatically opening doors are generally fitted with safety sensors. These are usually an infrared curtain or beam, but can be a pressure mat fitted on the swing side of the door. The safety sensor prevents the door from colliding with an object by stopping or slowing its motion. A mechanism in modern automatic doors ensures that the door can open in

2106-552: Is an early example of the 12th century in Lincoln . In France, the metalwork of the doors of Notre Dame at Paris is a beautiful example, but many others exist throughout France and England. In Italy, celebrated doors include those of the Battistero di San Giovanni (Florence) , which are all in bronze—including the door frames . The modeling of the figures, birds and foliage of the south doorway, by Andrea Pisano (1330), and of

2184-641: Is describing the terms which are officially used in European Member States. The main parts are listed below: Also known as ledges and braced, board and batten doors are an older design consisting primarily of vertical slats: As board and batten doors. Impact-resistant doors have rounded stile edges to dissipate energy and minimize edge chipping, scratching and denting. The formed edges are often made of an engineered material. Impact-resistant doors excel in high traffic areas such as hospitals, schools, hotels and coastal areas. This type consists of

2262-431: Is different from Wikidata All article disambiguation pages All disambiguation pages Door A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal . A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally , it

2340-518: Is far less than the R-40 walls or the R-50 ceilings of super-insulated buildings – passive solar and zero-energy buildings . Typical doors are not thick enough to provide very high levels of energy efficiency. Many doors may have good R-values at their center, but their overall energy efficiency is reduced because of the presence of glass and reinforcing elements, or because of poor weatherstripping and

2418-670: Is found in Verona , where the edges of the stiles and rails are beveled and notched. In the Renaissance period, Italian doors are quite simple, their architects trusting more to the doorways for effect; but in France and Germany the contrary is the case, the doors being elaborately carved, especially in the Louis XIV and Louis XV periods, and sometimes with architectural features such as columns and entablatures with pediment and niches,

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2496-711: Is known as the hanging stile, the other as the middle or meeting stile. The horizontal cross pieces are the top rail, bottom rail, and middle or intermediate rails. The most ancient doors were made of timber, such as those referred to in the Biblical depiction of King Solomon's temple being in olive wood (I Kings vi. 31–35), which were carved and overlaid with gold. The doors that Homer mentions appear to have been cased in silver or brass. Besides olive wood, elm , cedar , oak and cypress were used. Two doors over 5,000 years old have been found by archaeologists near Zürich, Switzerland. Ancient doors were hung by pintles at

2574-449: Is sometimes the case in trains or airplanes, such as for the door to the toilet, which opens inward. It is often useful to have doors which slide along tracks, often for space or aesthetic considerations. A bypass door is a door unit that has two or more sections. The doors can slide in either direction along one axis on parallel overhead tracks, sliding past each other. They are most commonly used in closets to provide access one side of

2652-419: The bit or blade , which slides into the keyway of the lock and distinguishes between different keys, and the bow , which is left protruding so that torque can be applied by the user. In its simplest implementation, a key operates one lock or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token for access to

2730-519: The Energy Star label or the passive house standards. Premium composite (including steel doors with a thick core of polyurethane or other foam), fiberglass and vinyl doors benefit from the materials they are made from, from a thermal perspective. There are very few door models with an R-value close to 10 (the R-value measures how well a barrier resists the conductive flow of heat). This

2808-624: The Pantheon are similar in design, with narrow horizontal panels in addition, at the top, bottom and middle. Two other bronze doors of the Roman period are in the Lateran Basilica . The Greek scholar Heron of Alexandria created the earliest known automatic door in the first century AD during the era of Roman Egypt . The first foot-sensor-activated automatic door was made in China during

2886-408: The key to a door can signify a change in status from outsider to insider. Doors and doorways frequently appear in literature and the arts with metaphorical or allegorical import as a portent of change. The earliest recorded doors appear in the paintings of Egyptian tombs, which show them as single or double doors, each of a single piece of wood. People may have believed these were doors to

2964-402: The shear line of the inner and outer cylinder, allowing the cylinder or cam to rotate freely and the lock to open. An additional pin called the master pin is present between the key and driver pins in locks that accept master keys, to allow the plug to rotate at multiple pin elevations. A wafer tumbler lock is similar to the pin tumbler lock and works on a similar principle. However, unlike

3042-763: The 11th and 12th centuries there are numerous examples of bronze doors, the earliest being one at Hildesheim , Germany (1015). The Hildesheim design affected the concept of Gniezno door in Poland. Of others in South Italy and Sicily, the following are the finest: in Sant'Andrea , Amalfi (1060); Salerno (1099); Canosa di Puglia (1111); Troia , two doors (1119 and 1124); Ravello (1179), by Barisano of Trani, who also made doors for Trani cathedral ; and in Monreale and Pisa cathedrals, by Bonano of Pisa. In all these cases

3120-738: The Door and Access Systems Manufacturing Association (DASMA) defines high-performance doors as non-residential powered doors characterized by rolling, folding, sliding or swinging action, that are either high-cycle (minimum 100 cycles/day) or high-speed (minimum 20 inches (508 mm)/second), and two out of three of the following: made-to-order for exact size and custom features, able to withstand equipment impact (break-away if accidentally hit by vehicle), or able to sustain heavy use with minimal maintenance. Automatically opening doors are powered open and closed either by electricity, spring, or both. There are several methods by which an automatically opening door

3198-689: The Greek goddess of witchcraft known as Hecate . The Palestinian key is the Palestinian collective symbol of their homes lost in the Nakba , when more than half of the population of Mandatory Palestine was expelled or fled violence in 1948 and were subsequently refused the right to return . Since 2016, a Palestinian restaurant in Doha , Qatar , holds the Guinness World Record for

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3276-590: The Kennedy Space Center contains the four largest doors. The Vehicle Assembly Building was originally built for the assembly of the Apollo missions' Saturn vehicles and was then used to support Space Shuttle operations. Each of the four doors are 139 meters (456 feet) high. The oldest door in England can be found in Westminster Abbey and dates from 1050. In England in the 17th century

3354-497: The North and South poles would equate to a combination to push or pull the lock's internal tumblers thus releasing the lock. An electronic lock works by means of an electric current and is usually connected to an access control system. In addition to the pin and tumbler used in standard locks, electronic locks connect the bolt or cylinder to a motor within the door using a part called an actuator. Types of electronic locks include

3432-535: The UK, to a simple training certificate awarded by an employer, to a full diploma from an engineering college . Locksmiths may be commercial (working out of a storefront), mobile (working out of a vehicle), institutional, or investigational (forensic locksmiths). They may specialize in one aspect of the skill, such as an automotive lock specialist, a master key system specialist or a safe technician. Many also act as security consultants, but not all security consultants have

3510-452: The afterlife, and some include designs of the afterlife. In Egypt, where the climate is intensely dry, doors were not framed against warping, but in other countries required framed doors—which, according to Vitruvius (iv. 6.) was done with stiles (sea/si) and rails (see: Frame and panel ) , the enclosed panels filled with tympana set in grooves in the stiles and rails. The stiles were the vertical boards, one of which, tenoned or hinged ,

3588-403: The backyard. Such doors are also popular for use for the entrances to commercial structures, although they are not counted as fire exit doors. The door that moves is called the "active leaf", while the door that remains fixed is called the "inactive leaf". A high-speed door is a very fast door some with opening speeds of up to 4 m/s, mainly used in the industrial sector where the speed of

3666-419: The button is pressed. Generally the car door can be opened with either a valid code by radio transmission, or with a (non-electronic) pin tumbler key. The ignition switch may require a transponder car key to both open a pin tumbler lock and also transmit a valid code by radio transmission. A smart lock is an electromechanics lock that gets instructions to lock and unlock the door from an authorized device using

3744-472: The church at Gisors (1575) are carved with figures in niches subdivided by classic pilasters superimposed. In St. Maclou at Rouen are three magnificently carved doors; those by Jean Goujon have figures in niches on each side, and others in a group of great beauty in the center. The other doors, probably about forty to fifty years later, are enriched with bas-reliefs , landscapes, figures and elaborate interlaced borders. NASA 's Vehicle Assembly Building at

3822-455: The closet at a time. Doors in a bypass unit overlap slightly when viewed from the front so they do not have a visible gap when closed. Doors which slide inside a wall cavity are called pocket doors . This type of door is used in tight spaces where privacy is also required. The door slab is mounted to roller and a track at the top of the door and slides inside a wall. Sliding glass doors are common in many houses, particularly as an entrance to

3900-411: The concomitant development of precision engineering and component standardization, locks and keys were manufactured with increasing complexity and sophistication. The lever tumbler lock , which uses a set of levers to prevent the bolt from moving in the lock, was invented by Robert Barron in 1778. His double acting lever lock required the lever to be lifted to a certain height by having a slot cut in

3978-464: The design of early 20th century key duplicators. Key duplication is available in many retail hardware stores and as a service of the specialized locksmith, though the correct key blank may not be available. More recently, online services for duplicating keys have become available. A keyhole (or keyway ) is a hole or aperture (as in a door or lock) for receiving a key. Lock keyway shapes vary widely with lock manufacturer, and many manufacturers have

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4056-421: The door fits tight without binding. Specifying an incorrect hand or swing can make the door bind, not close properly, or leak. Fixing this error is expensive or time-consuming. In North America, many doors now come with factory-installed hinges, pre-hung on the jamb and sills. While facing the door from the outside or less secure side, if the hinge is on the right side of the door, the door is "right handed"; or if

4134-400: The door panels were raised with bolection or projecting moldings, sometimes richly carved, around them; in the 18th century the moldings worked on the stiles and rails were carved with the egg-and-dart ornament . There are many kinds of doors, with different purposes: Most doors are hinged along one side to allow the door to pivot away from the doorway in one direction, but not

4212-467: The doorway being in plain masonry. While in Italy the tendency was to give scale by increasing the number of panels, in France the contrary seems to have been the rule; and one of the great doors at Fontainebleau , which is in two leaves, is entirely carried out as if consisting of one great panel only. The earliest Renaissance doors in France are those of the cathedral of St. Sauveur at Aix (1503). In

4290-406: The east doorway by Ghiberti (1425–1452), are of great beauty. In the north door (1402–1424), Ghiberti adopted the same scheme of design for the paneling and figure subjects as Andrea Pisano, but in the east door, the rectangular panels are all filled, with bas-reliefs that illustrate Scripture subjects and innumerable figures. These may the gates of Paradise of which Michelangelo speaks. Doors of

4368-694: The eighth and ninth century, are wrought in bronze, and the west doors of the cathedral of Aix-la-Chapelle (9th century), of similar manufacture, were probably brought from Constantinople, as also some of those in St. Marks, Venice . The bronze doors on the Aachen Cathedral in Germany date back to about 800 AD. Bronze baptistery doors at the Cathedral of Florence were completed in 1423 by Ghiberti. (For more information, see: Copper in architecture ). Of

4446-439: The fitting and replacement of keys remains an important part of locksmithing, modern locksmiths are primarily involved in the installation of high quality lock-sets and the design, implementation, and management of keying and key control systems. Locksmiths are frequently required to determine the level of risk to an individual or institution and then recommend and implement appropriate combinations of equipment and policies to create

4524-419: The following: A keycard lock operates with a flat card of similar dimensions as a credit card . In order to open the door, one needs to successfully match the signature within the keycard . The lock in a typical remote keyless system operates with a smart key radio transmitter. The lock typically accepts a particular valid code only once, and the smart key transmits a different rolling code every time

4602-425: The hanging stile had pivots at the top and bottom. The exact period when the builder moved to the hinge is unknown, but the change apparently brought about another method of strengthening and decorating doors—wrought-iron bands of various designs. As a rule, three bands with ornamental work constitute the hinges, with rings outside the hanging stiles that fit on vertical tenons set into the masonry or wooden frame. There

4680-525: The hanging stile was over 360 millimetres (14 in) diameter. Other sheathings of various sizes in bronze show this was a universal method adopted to protect the wood pivots. In the Hauran in Syria where timber is scarce, the doors were made of stone, and one measuring 1.63 by 0.79 m (64 by 31 in) is in the British Museum; the band on the meeting stile shows that it was one of the leaves of

4758-411: The hinge is on the left, it is "left handed". If the door swings toward you, it is "reverse swing"; or if the door swings away from you, it is "normal swing". In other words: New exterior doors are largely defined by the type of materials they are made from: wood , steel , fiberglass , UPVC /vinyl, aluminum , composite, glass (patio doors) , etc. Wooden doors – including solid wood doors – are

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4836-609: The keys as rings on their fingers. The practice had two benefits: It kept the key handy at all times, while signaling that the wearer was wealthy and important enough to have money and jewellery worth securing. A special type of lock, dating back to the 17th-18th century, although potentially older as similar locks date back to the 14th century, can be found in the Beguinage of the Belgian city Lier . These locks are most likely Gothic locks, that were decorated with foliage, often in

4914-716: The lever, so lifting the lever too far was as bad as not lifting the lever far enough. This type of lock is still used today. The lever tumbler lock was greatly improved by Jeremiah Chubb in 1818. A burglary in Portsmouth Dockyard prompted the British Government to announce a competition to produce a lock that could be opened only with its own key. Chubb developed the Chubb detector lock , which incorporated an integral security feature that could frustrate unauthorized access attempts and would indicate to

4992-441: The lock's owner if it had been interfered with. Chubb was awarded £100 after a trained lock-picker failed to break the lock after 3 months. In 1820, Jeremiah joined his brother Charles in starting their own lock company, Chubb . Chubb made various improvements to his lock: his 1824 improved design did not require a special regulator key to reset the lock; by 1847 his keys used six levers rather than four; and he later introduced

5070-460: The locked area; locks are meant to only allow persons having the correct key to open it and gain access. In more complex mechanical lock/key systems, two different keys, one of which is known as the master key, serve to open the lock. Common metals include brass , plated brass, nickel silver , and steel . The act of opening a lock without a key is called lock picking . Locks have been in use for over 6000 years, with one early example discovered in

5148-466: The lower panels there are figures 3 ft (0.91 m). high in Gothic niches , and in the upper panels a double range of niches with figures about 2 ft (0.61 m). high with canopies over them, all carved in cedar . The south door of Beauvais Cathedral is in some respects the finest in France; the upper panels are carved in high relief with figure subjects and canopies over them. The doors of

5226-562: The mosques in Cairo were of two kinds: those externally cased with sheets of bronze or iron, cut in decorative patterns, and incised or inlaid, with bosses in relief; and those of wood-framed with interlaced square and diamond designs. The latter design is Coptic in origin. The doors of the palace at Palermo , which were made by Saracenic workmen for the Normans , are fine examples in good preservation. A somewhat similar decorative class of door

5304-415: The other. The axis of rotation is usually vertical. In some cases, such as hinged garage doors , the axis may be horizontal, above the door opening. Doors can be hinged so that the axis of rotation is not in the plane of the door to reduce the space required on the side to which the door opens. This requires a mechanism so that the axis of rotation is on the side other than that in which the door opens. This

5382-436: The pin lock (where each pin consists of two or more pieces) each wafer is a single piece. The wafer tumbler lock is often incorrectly referred to as a disc tumbler lock, which uses an entirely different mechanism. The wafer lock is relatively inexpensive to produce and is often used in automobiles and cabinetry. The disc tumbler lock or Abloy lock is composed of slotted rotating detainer discs. The lever tumbler lock uses

5460-545: The reign of Emperor Yang of Sui (r. 604–618), who had one installed for his royal library. Gates powered by water featured in illustrations of the automatons of the Arab inventor Al-Jazari . Copper and its alloys were integral in medieval architecture. The doors of the church of the Nativity at Bethlehem (6th century) are covered with plates of bronze, cut out in patterns. Those of Hagia Sophia at Constantinople , of

5538-477: The ruins of Nineveh , the capital of ancient Assyria . Locks such as this were developed into the Egyptian wooden pin lock , which consisted of a bolt, door fixture or attachment, and key. When the key was inserted, pins within the fixture were lifted out of drilled holes within the bolt, allowing it to move. When the key was removed, the pins fell part-way into the bolt, preventing movement. The warded lock

5616-450: The same term [REDACTED] This disambiguation page lists articles associated with the title Doorway . 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=Doorway&oldid=1233110325 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description

5694-604: The skills and knowledge of a locksmith. Historically, locksmiths constructed or repaired an entire lock, including its constituent parts. The rise of cheap mass production has made this less common; the vast majority of locks are repaired through like-for-like replacements, high-security safes and strongboxes being the most common exception. Many locksmiths also work on any existing door hardware, including door closers, hinges, electric strikes, and frame repairs, or service electronic locks by making keys for transponder-equipped vehicles and implementing access control systems. Although

5772-534: The tomb of Theron at Agrigentum there is a single four-panel door carved in stone. In the Blundell collection is a bas-relief of a temple with double doors, each leaf with five panels. Among existing examples, the bronze doors in the church of SS. Cosmas and Damiano , in Rome, are important examples of Roman metal work of the best period; they are in two leaves, each with two panels, and are framed in bronze. Those of

5850-722: The top and bottom of the hanging stile, which worked in sockets in the lintel and sill , the latter in some hard stone such as basalt or granite . Those Hilprecht found at Nippur , dating from 2000 BC, were in dolerite . The tenons of the gates at Balawat were sheathed with bronze (now in the British Museum ). These doors or gates were hung in two leaves, each about 2.54 m (100 in) wide and 8.2 m (27 ft) high; they were encased with bronze bands or strips, 25.4 cm (10.0 in) high, covered with repoussé decoration of figures. The wood doors would seem to have been about 7.62 cm (3.00 in) thick, but

5928-442: The way the door is manufactured. Door weatherstripping is particularly important for energy efficiency. German-made passive house doors use multiple weatherstrips, including magnetic strips, to meet higher standards. These weatherstrips reduce energy losses due to air leakage. Key (lock) A key is a device that is used to operate a lock (to lock or unlock it). A typical key is a small piece of metal consisting of two parts:

6006-611: The window of his shop from 1790, challenging "...the artist who can make an instrument that will pick or open this lock" for the reward of £200. The challenge stood for over 67 years until, at the Great Exhibition of 1851, the American locksmith Alfred Charles Hobbs was able to open the lock and, following some argument about the circumstances under which he had opened it, was awarded the prize. Hobbs' attempt required some 51 hours, spread over 16 days. The earliest patent for

6084-554: Was also present from antiquity and remains the most recognizable lock and key design in the Western world. The first all-metal locks appeared between the years 870 and 900, and are attributed to English craftsmen. It is also said that the key was invented by Theodorus of Samos in the 6th century BC. 'The Romans invented metal locks and keys and the system of security provided by wards.' Affluent Romans often kept their valuables in secure locked boxes within their households, and wore

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