Jonathan Edwards College (informally JE ) is a residential college at Yale University . It is named for theologian and minister Jonathan Edwards , a 1720 graduate of Yale College . JE's residential quadrangle was the first to be completed in Yale's residential college system, and was opened to undergraduates in 1933.
81-434: Among James Gamble Rogers' original eight residential colleges, it is distinct in incorporating pre-existing buildings. Since its renovation in 2008, the college houses 212 students and several faculty fellows. In total, it has around 425 affiliated students and 250 affiliated fellows. In 1930, Yale President James Rowland Angell announced a "Quadrangle Plan" for Yale College , establishing small collegiate communities in
162-506: A hoist , although some pump hydraulic fluid to raise a cylindrical piston like a jack . Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators , grain augers , and hay elevators . Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers . Some elevators can even move horizontally. The earliest known reference to an elevator
243-587: A "Chart for determining the number and size of elevators required for office buildings of a given total occupied floor area". In 1920, Howard B. Cook presented a paper titled "Passenger Elevator Service". This paper marked the first time a member of the elevator industry offered a mathematical means of determining elevator service. His formula determined the round trip time (RTT) by finding the single trip time, doubling it, and adding 10 seconds. In 1923, Bassett Jones published an article titled "The Probable Number of Stops Made by an Elevator". He based his equations on
324-629: A JE alumnus and professor of metallurgy at UCLA who was killed in a 1978 plane crash , supports lectures and research fellowships at Yale. It is administered by the Head of JE, who invites distinguished scientists and science advocates to give the semesterly Tetelman Lecture. Past lecturers include Robert Ballard , Harry Blackmun , Ben Carson , Murray Gell-Mann , the Dalai Lama , David Lee , Amartya Sen , Maxine Singer , and James Watson . The Tetelman Fellowship also supports undergraduate research in
405-541: A building is at its most busy first thing in the morning; however, in more complicated elevator systems, this model does not work. In 1990, Peters published a paper titled "Lift Traffic Analysis: Formulae for the General Case" in which he developed a new formula which would account for mixed traffic patterns as well as accounting for passenger bunching using Poisson approximation. This new General Analysis equation enabled much more complex systems to be analyzed however
486-426: A deeply grooved pulley , commonly called a sheave in the industry. The weight of the car is balanced by a counterweight . Oftentimes two elevators (or sometimes three) are built so that their cars always move synchronously in opposite directions, and are each other's counterweight. The friction between the ropes and the pulley furnishes the traction which gives this type of elevator its name. Hydraulic elevators use
567-461: A floor at the same time, are usually driven by the same motor. The system increases efficiency in high-rise buildings, and saves space so additional shafts and cars are not required. In 2003, TK Elevator invented a system called TWIN, with two elevator cars independently running in one shaft. In 1901, consulting engineer Charles G. Darrach (1846–1927) proposed the first formula to determine elevator service. In 1908, Reginald P. Bolton published
648-753: A green serpent, a reference to the Book of Genesis , is used on blazers and other college apparel. It recalls the Reverend Jonathan Edwards' preoccupation with the doctrine of original sin . It was devised by the first Master and Fellows, and designed by H. Dillington Palmer. It forms the silver head of the ebony mace of the College . The college's mascot is the Spider, derived from a line in Jonathan Edwards' early descriptive writings on
729-483: A longstanding rivalry with Branford College . For decades, students from each college have caused mischief within their counterpart's buildings and grounds. It's relatively common for Branford students to stand in the JE courtyard and brag about how much better their courtyard is. JE students try their best to counter these claims, but they don't have too much to defend. Though most of the antics are spontaneous, every semester
810-539: A more compact system. The IGBT also allowed the development of a small, highly integrated, highly sophisticated all-digital control device, consisting of a high-speed processor, specially customized gate arrays, and a circuit capable of controlling large currents of several kHz. In 2000, the first vacuum elevator was offered commercially in Argentina. Some people argue that elevators began as simple rope or chain hoists (see Traction elevators below). An elevator
891-413: A non-circulating library of JE memorabilia. It was designed by Rogers and features stained glass pieces produced by G. Owen Bonawit . The two-story Robert Taft Library, named for Senator Robert Taft, originally belonged to Weir Hall and was given over to the college in 1965. JE contains one of the smallest central college courtyards at Yale, which partially explains why very few people spend time there. At
SECTION 10
#1732775452063972-580: A novel tourist attraction which they called the "ascending room", which elevated customers to a considerable height in the center of London, providing a panoramic view. Early, crude steam-driven elevators were refined in the ensuing decade. In 1835, an innovative elevator, the Teagle, was developed by the company Frost and Stutt in England . It was belt-driven and used a counterweight for extra power. In 1845, Neapolitan architect Gaetano Genovese installed
1053-577: A small cabinet houses the controller. The equipment is otherwise similar to that of a normal traction or hole-less hydraulic elevator. The world's first machine-room-less elevator, the Kone MonoSpace, was introduced in the year 1996, by Kone . Compared to traditional elevators, it: Its disadvantage was that it could be harder, and significantly more dangerous, to service and maintain. Double-decker elevators are traction elevators with cars that have an upper and lower deck. Both decks, which can serve
1134-460: A so-called 'flying chair' built for one of his mistresses at the Château de Versailles in 1743. Ancient and medieval elevators used drive systems based on hoists and windlasses . The invention of a system based on the screw drive was perhaps the most important step in elevator technology since ancient times, leading to the creation of modern passenger elevators. The first screw-drive elevator
1215-452: A strategy for victory in the annual Bladderball game. The plan was to take possession of the giant bladderball with a meathook. The bladderball deflated after being punctured by the meathook, prematurely ending the game and causing students of other colleges to chant "JE Sucks!" That winter, the jeer was lightheartedly adopted by JE's intramural ice hockey team, who went on to claim the intramural title. Since then, JE students have adopted
1296-588: A successful elevator enterprise in Austria-Hungary. The safety and speed of electric elevators were significantly enhanced by Frank Sprague , who added floor control, automatic operation, acceleration control, and further safety devices. His elevator ran faster and with larger loads than hydraulic or steam elevators. 584 of Sprague's elevators were installed before he sold his company to the Otis Elevator Company in 1895. Sprague also developed
1377-420: A variety of factors. Hydraulic elevators are cheaper, but installing cylinders greater than a certain length becomes impractical for very-high lift hoistways. For buildings of much over seven floors, traction elevators must be employed instead. Hydraulic elevators are usually slower than traction elevators. Elevators are a candidate for mass customization . There are economies to be made from mass production of
1458-409: A vertical cylinder, allowing the platform, carrying a heavy load, to be raised and lowered. Counterweights and balances were also used to increase lifting power. Henry Waterman of New York is credited with inventing the "standing rope control" for an elevator in 1850. In 1852, Elisha Otis introduced the safety elevator, which prevented the fall of the cab if the cable broke. He demonstrated it at
1539-594: A young slave holding a sundial, purported to have belonged to Elihu Yale . It has since been transferred to the Yale University Art Gallery . In 2012, a bronze sundial honoring Master Gary Haller was installed near the site of the original sundial, bearing the crest and badge of the college. Since 1998, the Yale University Art Gallery has loaned a twelve-foot bronze sculpture by Dimitri Hadzi, entitled "Floating Helmets", to
1620-426: Is applied in high-speed elevators worldwide. The Toshiba company continued research on thyristors for use in inverter control and dramatically enhanced their switching capacity, resulting in the development of insulated gate bipolar transistors (IGBTs) at the end of the 1980s. The IGBT realized increased switching frequency and reduced magnetic noise in the motor, eliminating the need for a filter circuit and allowing
1701-557: Is currently tied for eighth in all-time Tyng victories. Like its counterparts in the other residential colleges, the Jonathan Edwards College Council (JECC) is the elected student council that governs student life in the college. In conjunction with the Head of College and Dean, the JECC manages student facilities, capital purchases, and residential policies. In addition, many college traditions are organized by
SECTION 20
#17327754520631782-446: Is essentially a platform that is either pulled or pushed up by mechanical means. A modern-day elevator consists of a cab (also called a "cabin", "cage", "carriage" or "car") mounted on a platform within an enclosed space called a shaft or sometimes a "hoistway". In the past, elevator drive mechanisms were powered by steam and water hydraulic pistons or by hand. In a "traction" elevator, cars are pulled up by means of rolling steel ropes over
1863-518: Is in the works of the Roman architect Vitruvius , who reported that Archimedes ( c. 287 BC – c. 212 BC ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people or animals. The Roman Colosseum , completed in 80 AD, had roughly 25 elevators that were used for raising animals up to the floor. Each elevator could carry about 600 pounds (270 kg) (roughly
1944-620: Is the only one of James Gamble Rogers' eight colleges to blend new and pre-existing buildings. Less ornate than the adjacent Memorial Quadrangle , JE became the template for Yale's gothic residential projects. JE's immediate forerunner is in the York-Library dormitory, a short, L-shaped building completed in 1924 to complement the Memorial Quadrangle and complete the Gothic corridor along Library Street (now Library Walk). When
2025-576: Is thought to be the first office building with passenger elevators. In 1872, American inventor James Wayland patented a novel method of securing elevator shafts with doors that are automatically opened and closed as the elevator car approaches and leaves them. In 1874, J. W. Meaker patented a method permitting elevator doors to open and close safely. The first electric elevator was built by Werner von Siemens in 1880 in Germany. Inventor Anton Freissler further developed von Siemens' ideas and created
2106-615: Is unique among the residential colleges, but akin to that of the University Commons . Unlike Commons, which is the largest dining venue on campus, the Great Hall was designed to be one of the smallest dining halls at Yale. On the upper walls are portraits of former heads, usually commissioned at the end of their tenure. Both libraries in JE are located in Weir Hall. At the foot of Weir Hall is Curtis & Curtiss Library,
2187-609: The Old Campus , and approximately half of the junior class lives in McClellan Hall . Due to the small size of the college and the proximity of McClellan, more upperclassmen live in annex housing than any other college (this isn't a good thing). The Great Hall, the Rogers-designed dining hall in JE, is in the style of an Elizabethan banquet hall , with a high timber truss ceiling and oak-paneled walls. The style
2268-482: The "Flying chair", an elevator ahead of its time in the Royal Palace of Caserta . It was covered with chestnut wood outside and with maple wood inside. It included a light, two benches, and a hand-operated signal, and could be activated from the outside, without any effort by the occupants. Traction was controlled by a motor mechanic utilizing a system of toothed wheels. A safety system was designed to take effect if
2349-739: The Dept. of Drawings & Archives in the Avery Architectural and Fine Arts Library at Columbia University in New York. A number of his built works are listed on the National Register of Historic Places (NRHP). Elevator An elevator ( American English ) or lift ( Commonwealth English ) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as
2430-487: The Edwards family. A green, rearing heraldic lion symbolizes courage and purity of heart. Its crimson tongue and nails exhibit willingness to pursue its goals with passion both of speech and strength. The veil of white that surrounds the lion symbolizes the grace of God . This shield is used on formal decorations and college letterhead. Other insignia have been informally adopted for the college. A red apple surrounded by
2511-486: The Head of College and approval of the Council of Heads of College, any Yale faculty member or professional employee can be named a fellow of JE. The Head of College may also nominate associate fellows, defined broadly as any person who is not an employee or recent graduate of Yale College. Fellows hold weekly fellows dinners in the college, teach college seminars, advise students on their course of study, and participate in
Jonathan Edwards College - Misplaced Pages Continue
2592-425: The Head of College's House. The desk was discovered in the basement of the old Divinity School during its demolition in 1931 and moved to JE. In 2008, stone-cut replicas of the Edwards' tombstones, hand carved by The John Stevens Shop , were installed in the college's basement. Sculptures have adorned the courtyard since its opening. In the 1930s, the courtyard featured an early eighteenth-century bronze statue of
2673-476: The Head's Courtyard. JE is one of two residential colleges which maintains active use of its print shop, the JE Press. JE owns three manual press, one of which belonged to Frederic Goudy , and an automated Vandercook press. The JE Press is overseen by printer Richard Rose, who teaches classes each year in the printing arts. The work of artists affiliated with the college are on rotating display their art in
2754-482: The JECC. However, only around 27% of JE students are interested in anything the JECC has to say. The Social Activities Committee is a volunteer student group which plans and hosts study breaks, dances, and miscellaneous college events. In a tradition dating back to the 1960s, a raffle is held each semester for the students of the college to attend cultural and artistic performances in New York and New Haven. Fellows of
2835-456: The Men of JE lead a late night brigade to Branford to disrupt last-minute studying at the end of Reading Period . JE's sister college at Harvard is Eliot House , a relationship formalized in 1934. The hospitality of each college is open to the fellows and students of the other; this primarily occurs during The Game , when Eliot House and JE host students of the other college. By nomination of
2916-532: The New York exposition in the Crystal Palace in a dramatic, death-defying presentation in 1854, and the first such passenger elevator was installed at 488 Broadway in New York City on 23 March 1857. The first elevator shaft preceded the first elevator by four years. Construction for Peter Cooper 's Cooper Union Foundation building in New York began in 1853. An elevator shaft was included in
2997-547: The building as a triumph, being both beautiful and functional. Rogers's nephew, James Gamble Rogers II (1901–1990) was also an architect, who designed homes in Winter Park, Florida for the Rogers family architecture firm Rogers, Lovelock and Fritz, where Rogers II's son John (Jack) Rogers is a principal architect. Rogers II's other son, James Gamble Rogers IV (1937–1991) was also trained as an architect. After working in
3078-504: The campus. Rogers was criticized by other prominent Gothic-revival American architects, namely Ralph Adams Cram , for his use of steel frames underneath stone cladding, and tricks such as splashing acid on stone walls to simulate age. Rogers was also criticized by the growing Modernist movement of the time. The 1927 Sterling Memorial Library came under especially vocal attack from Yale students for its historicist spirit and its lavish use of ornament. But current opinion generally regards
3159-500: The car does not reach maximum rated speed or acceleration, and added the functionality of express zones. This equation is now referred to as the 'Up peak Calculation' as it uses the assumption that all the passengers are coming into the building from the ground floor (incoming traffic) and that there are no passengers traveling from a higher floor to the ground floor (outgoing traffic) and no passengers traveling from one internal floor to another (interfloor traffic). This model works well if
3240-688: The car passed through them. The first elevator in India was installed at the Raj Bhavan in Kolkata by Otis in 1892. By 1900, completely automated elevators were available, but passengers were reluctant to use them. Their adoption was aided by a 1945 elevator operator strike in New York City, and the addition of an emergency stop button, emergency telephone, and a soothing explanatory automated voice. An inverter-controlled gearless drive system
3321-580: The ceremonies and traditions of the college. The fellowship's most senior members appointed as president of the Junior Common Room and president of the Senior Common Room by order of seniority. Notable living fellows include Bob Alpern , Harold Bloom , David Bromwich , Scott Ellaway , Shelly Kagan , Frank Rich , Herbert Scarf , Tom Steitz , Florian Hill and Robert Stern . The Alan S. Tetelman Fellowship, endowed in memory of
Jonathan Edwards College - Misplaced Pages Continue
3402-540: The college accompany groups of students to each performance, usually taking them to dinner beforehand. Culture Draw events usually include performances of the Metropolitan Opera and New York City Ballet , Broadway musicals and plays , and symphony orchestra concerts. The JE Screw is the college's iteration of the "screw" dances popular at Yale, during which suitemates will set up blind dates for each other and require pairs to "find each other" prior to
3483-427: The college plan was approved several years later, Rogers reconfigured and expanded the dormitory, renaming its wings as Dickinson Hall and Wheelock Hall after early alumni who were the founding presidents of Princeton and Dartmouth . The construction of the dormitories also required the demolition of Kent Chemical Laboratory, replaced with Kent Hall, and the addition of a dining hall and Head's house that fully enclosed
3564-580: The college was retrofitted with elevators and lower-level staircases . Residences for upperclassmen and graduate affiliates were added to Weir Hall, completing JE's multi-decade annexation of the building. After several months of delays due to the complexity of the renovation, the college was rededicated in December 2008 in a ceremony commemorating the seventy-fifth anniversary of the residential college system. The freshman class lives in Farnam Hall on
3645-415: The college's basement art gallery. A permanent installation of prints by Walker Evans can also be found in the basement, as well as historical memorabilia and ephemera printed by the JE Press. The official insignia of JE is its shield, described in heraldic terms as ermine , a lion rampant vert . Designed by Fritz Kredel , it is a simplified version of the coat of arms believed to have been used by
3726-404: The college's founding, the courtyard comprised a lawn, sometimes referred to as the "Greensward," and an elliptical pathway. Once an open expanse of grass, the courtyard was landscaped in 1989 and a gated Head's Courtyard was constructed at the courtyard's east end. Three iron entryway gates were cast by blacksmith Samuel Yellin . Yellin emblazoned the main gate with the dates "1720" and "1932",
3807-485: The components, but each building comes with its own requirements like different number of floors, dimensions of the well and usage patterns. Elevator doors prevent riders from falling into, entering, or tampering with anything in the shaft. The most common configuration is to have two panels that meet in the middle and slide open laterally. These are known as "center-opening". In a cascading telescopic configuration (potentially allowing wider entryways within limited space),
3888-463: The cords broke, consisting of a beam pushed outwards by a steel spring. The hydraulic crane was invented by Sir William Armstrong in 1846, primarily for use at the Tyneside docks for loading cargo. They quickly supplanted the earlier steam-driven elevators, exploiting Pascal's law to provide much greater force. A water pump supplied a variable level of water pressure to a plunger encased inside
3969-458: The creatures as well as his famous sermon " Sinners in the Hands of an Angry God ," in which Edwards opines that "The God that holds you over the pit of hell, much as one holds a spider, or some loathsome insect over the fire, abhors you, and is dreadfully provoked." Members of the college are called "Spiders." The unofficial motto of the College is "JE SUX." In 1975, several JE students came up with
4050-645: The dance. JE Screw customarily takes place in the fall semester and is open to members of the college and their dates. Considered the most formal of residential college balls, the Spider Ball is traditionally held immediately before Reading Period . As a Fall semester in-gathering, students hold a "Great Awakening" courtyard picnic to commemorate the legacy of Jonathan Edwards and the American religious revival he inspired. In October, students plant hundreds of tulip bulbs in courtyard planters, which bloom at
4131-590: The design because Cooper was confident that a safe passenger elevator would soon be invented. The shaft was cylindrical because Cooper thought it was the most efficient design. Otis later designed a special elevator for the building. Peter Ellis , an English architect, installed the first elevators that could be described as paternoster elevators in Oriel Chambers in Liverpool in 1868. The Equitable Life Building , completed in 1870 in New York City,
SECTION 50
#17327754520634212-409: The doors roll on independent tracks so that while open, they are tucked behind one another, and while closed, they form cascading layers on one side. This can be configured so that two sets of such cascading doors operate like the center opening doors described above, allowing for a very wide elevator cab. In less expensive installations the elevator can also use one large "slab" door: a single panel door
4293-452: The elevator shaft when the car was not being entered or exited. In 1887, American inventor Alexander Miles of Duluth, Minnesota , patented an elevator with automatic doors that closed off the elevator shaft when the car was not being entered or exited. In 1891, American inventors Joseph Kelly and William L. Woods co-patented a novel way to guard elevator shafts against accident, by way of hatches that would automatically open and close as
4374-551: The end of the spring semester. They also crown a Tulip Princess, a member of the college who most embodies the character or appearance of the flower. Drawing on the Polish tradition of Dyngus Day , the "Wet Monday" water fight occurs each year at midnight on Easter Monday . While freshmen blitz the college with water balloons and squirt guns , upperclassmen attempt to defend the college quadrangle with an arsenal of hoses , water balloons, and other creative deterrents. Formed in
4455-482: The equations had now become so complex that it was almost impossible to do manually and it became necessary to use software to run the calculations. The GA formula was extended even further in 1996 to account for double deck elevators. RTT calculations establish an elevator system's handling capacity by using a set of repeatable calculations which, for a given set of inputs, always produce the same answer. It works well for simple systems; but as systems get more complex,
4536-504: The fall of 1990 as a parody of singing group culture at Yale, the Men of JE are an audition-only a cappella group with a semi-secret membership. Claiming to be "part a cappella group, part defender of Yale and JE ideals," the Men are known to pester and prank students in Branford and other residential colleges. They traditionally perform original songs at JE events, whether or not they are invited to do so. Borne of their proximity, JE has
4617-508: The family firm as a young man, James Gamble Rogers IV decided to pursue his passion for music. He became a noted Florida folksinger, composer and guitarist, now memorialized by the Gamble Rogers Memorial Foundation, Gamble Rogers Middle School, and Gamble Rogers Memorial State Recreation Area at Flagler Beach on Florida's east coast. James Gamble Rogers' architectural drawings and photographs are now held in
4698-491: The first book devoted to this subject, Elevator Service . The summation of his work was a massive fold-out chart (placed at the back of his book) that allowed users to determine the number of express and local elevators needed for a given building to meet a desired interval of service. In 1912, commercial engineer Edmund F. Tweedy and electrical engineer Arthur Williams co-authored a book titled Commercial Engineering for Central Stations . He followed Bolton's lead and developed
4779-640: The first such appointment at Yale. JE's early years saw a flourishing of political activity among students. In 1934 the Yale Political Union was founded in the college. During World War II , JE was one of three residential colleges which remained open to civilian students. During this time, it became a significant site of intelligence community activity. Master French, who remained at the college through 1953, and his successor, William Dunham, were conduits for undergraduate recruitment into intelligence positions. Fellow and future dean Joseph Curtiss
4860-818: The idea and technology for multiple elevators in a single shaft. In 1871, when hydraulic power was a well established technology, Edward B. Ellington founded Wharves and Warehouses Steam Power and Hydraulic Pressure Company, which became the London Hydraulic Power Company in 1883. It constructed a network of high-pressure mains on both sides of the Thames which ultimately extended 184 miles (296 km) and powered some 8,000 machines, predominantly elevators and cranes. Schuyler Wheeler patented his electric elevator design in 1883. In 1884, American inventor D. Humphreys of Norfolk, Virginia , patented an elevator with automatic doors that closed off
4941-455: The institution's agreement to hire Rogers for the project. It is thus no coincidence that Rogers' work is abundant at Yale, Columbia and the other institutions Harkness supported lavishly. Even though Harkness admired Rogers's work, when Harkness donated a new home for Wolf's Head , his society at Yale, another architect ( Bertram Goodhue ) was chosen. Rogers' Collegiate Gothic designs for Yale lent an air of instant heritage and authenticity to
SECTION 60
#17327754520635022-461: The introduction of steel beam construction, worked together to provide the passenger and freight elevators in use today. Starting in coal mines, elevators in the mid-19th century operated with steam power , and were used for moving goods in bulk in mines and factories. These devices were soon applied to a diverse set of purposes. In 1823, Burton and Homer, two architects in London , built and operated
5103-434: The limited library space available in the original college. In 2007, as part of a twelve-year program to renovate all of Yale's residential colleges, Newman Architects led a major, yearlong renovation of JE. The renovation aimed to improve connectivity and accessibility, upgrade building systems, and restore and enhance building facilities. Most residential suites were reconfigured, administrative offices were consolidated, and
5184-577: The natural and applied sciences. In 1962, JE received a large bequest in memory of Robert C. Bates, a fellow of the college and professor of French, by his sister Amy Bradish Groesbeck. These funds are disbursed as teaching and undergraduate research fellowships. In 2016, the title of "Master" was changed to "Head of College" 41°18′32″N 72°55′48″W / 41.3089°N 72.9300°W / 41.3089; -72.9300 James Gamble Rogers In New York City: Elsewhere: James Gamble Rogers (March 3, 1867 – October 1, 1947)
5265-564: The original buildings at the Columbia-Presbyterian Medical Center (now the NewYork-Presbyterian /Columbia University Irving Medical Center), which was the world's first academic medical center . He died in New York City on October 1, 1947. Rogers was philanthropist Edward Harkness 's favorite architect, and Harkness would often condition a gift for a new academic or medical building upon
5346-545: The phrase as their rallying cry, with a slight twist: "Sux" instead of "Sucks," a gesture to the university's motto, Lux et Veritas . Yale's residential colleges compete in an annual intramural competitions in several dozen events. Each year, the most winning college across all events receives the Tyng Cup. After clinching the cup only twice in the first seventy-five years of the competition, JE won three consecutive Tyng Cup championships in 2009-'10, 2010-'11, and 2011-'12. It
5427-457: The principles of hydraulics (in the sense of hydraulic power ) to pressurize an above-ground or in-ground piston to raise and lower the car (see Hydraulic elevators below). Roped hydraulics use a combination of both ropes and hydraulic power to raise and lower cars. Recent innovations include permanent magnet motors, machine room-less rail mounted gearless machines, and microprocessor controls. The technology used in new installations depends on
5508-410: The quadrangle. JE's final building, Weir Hall, was incorporated into the college several decades into the college's tenure. Its construction began in 1911 when George Douglas Miller decided to build a dormitory for Skull and Bones . Though Miller salvaged the castellated towers of Alumni Hall, a campus building originally constructed in 1851, the new dormitory was never completed and was purchased by
5589-423: The style of Oxford and Cambridge in order to foster more social intimacy among students and faculty, relieve dormitory overcrowding, and reduce the influence of on-campus fraternities and societies. Professor Robert Dudley French was one of the earliest advocates of this plan and visited Oxford and Cambridge to study aspects of their college systems. In 1930, Angell appointed him Master of Jonathan Edwards College,
5670-412: The theory of probabilities and found a reasonably accurate method of calculating the average stop count. The equation in this article assumed a consistent population on every floor. He went on to write an updated version of his equations in 1926 which accounted for variable population on each floor. Jones credited David Lindquist for the development of the equation but provides no indication as to when it
5751-537: The university in 1912. It served as home to Yale's Department of Architecture from 1924 until 1965, when it was converted to a residential and library building for JE. Though the basic architectural program of the college has remained unchanged since its opening, JE has undergone several significant renovations. In 1965, the annexation of Weir Hall allowed for the construction of the Robert Taft Library, faculty offices, and college seminar rooms, expanding
5832-462: The weight of two lions) 23 feet (7.0 m) up when powered by up to eight men. In 1000, the Book of Secrets by Ibn Khalaf al-Muradi in Islamic Spain described the use of an elevator-like lifting device to raise a large battering ram to destroy a fortress. In the 17th century, prototypes of elevators were installed in the palace buildings of England and France. Louis XV of France had
5913-403: The width of the doorway that opens to the left or right laterally. These are known as "single slide" doors. Some buildings have elevators with the single door on the shaftway, and double cascading doors on the cab. Elevators that do not require separate machine rooms are designed so that most of their power and control components fit within the hoistway (the shaft containing the elevator car), and
5994-463: The year of Edwards' graduation from Yale and the year of the college's founding, respectively. Tributes to Jonathan Edwards are found throughout the college. Given to Yale by Edwards' descendants, original portraits by Joseph Badger of Edwards and his wife, Sarah Pierpont Edwards, hang in the Head of College's House dining room, and facsimiles hang in the Senior Common Room. A walnut slant top desk believed to have belonged to Edwards also resides in
6075-594: Was a member of the senior society Scroll and Key , whose membership included several other notable architects. He received his B.A. in 1889, and is responsible for many of the gothic revival structures at Yale University built in the 1910s through the mid-1930s, as well as the university's master plan in 1924. He designed buildings for other universities as well, such as the Butler Library at Columbia University and several buildings at Northwestern University , notably Deering Library . Rogers designed most of
6156-492: Was an American architect. A proponent of what came to be known as Collegiate Gothic architecture, he is best known for his academic commissions at Yale University , Columbia University , Northwestern University , and elsewhere. Rogers was born in Bryan Station , Kentucky , on March 3, 1867, to James M. and Katharine Gamble Rogers. Rogers attended Yale University , where he contributed to The Yale Record and
6237-494: Was at a time when entrance into either Harvard or Yale required ability in Latin, Greek, and Hebrew. Edwards received his Masters of Arts from Yale in 1722. In 1724, he returned to the college as a tutor respected for his theological orthodoxy, anti- Arminianism , and devotion to Yale. The dominant architectural style of JE is Gothic Revival , and the campus consists of two- to four-story buildings surrounding an open courtyard . It
6318-554: Was built by Ivan Kulibin and installed in the Winter Palace in 1793, although there may have been an earlier design by Leonardo da Vinci . Several years later, another of Kulibin's elevators was installed in the Arkhangelskoye near Moscow . The development of elevators was led by the need for movement of raw materials, including coal and lumber , from hillsides. The technology developed by these industries, and
6399-655: Was extensively involved in CIA reconnaissance projects, including one known as the "Yale Library Project." Until the university abolished the practice 1962 and placed students in the colleges by lottery, the college admitted students by application after completion of their freshman year. During the 1960s, Master Beekman Cannon deepened a tradition of performing arts in the college, hosting operas, plays, recitals, and musical satire. Jonathan Edwards matriculated at Yale College in 1716 near his 13th birthday. Four years later, he graduated as valedictorian of his class of about twenty. This
6480-448: Was first proposed. Although the equations were there, elevator traffic analysis was still a very specialist task that could only be done by world experts. That was until 1967 when Strakosch wrote an eight step method for finding the efficiency of a system in "Vertical transportation: Elevators and Escalators". In 1975, Barney and Dos Santos developed and published the "Round Trip Time (RTT) formula", which followed Strakosch's work. This
6561-506: Was the first formulized mathematical model and is the simplest form that is still used by traffic analyzers today. Modification and improvements have been made to this equation over the years, most significantly in 2000 when Peters published "Improvements to the Up Peak Round Trip Time Calculation" which improved the accuracy of the flight time calculation, making allowances for short elevator journeys when
#62937