Instruct: Given a question, retrieve relevant passages that can help answer the question.
Query: When was the first safety pin developed?
American mechanic Walter Hunt is regarded as the inventor of the safety pin that bears resemblance to those used today. The safety pin included a clasp that covered the point and kept it from opening, and a circular twist at the bend to act as a spring and hold it in place. Charles Rowley (Birmingham, England) independently patented a similar safety pin in October 1849, although the company no longer makes these.
An air bag is a safety feature designed to protect automobile passengers in a head-on collision. Most cars today have driver's side airbags and many have one on the passenger side as well. Located in the steering wheel assembly on the driver's side and in the dashboard on the passenger side, the air bag device responds within milliseconds of a crash. The original safety cushion was first created by John W. Hetrick in 1952. After a car accident that his family was involved in, Hetrick drew sketches of compressed air stored in a container. When a spring-loaded weight senses the car decelerating at a rapid enough rate, it opens a valve that allows the pressure in the container to fill a bag. With this knowledge, he developed his design until he was able to obtain a patent on the device on August 5, 1952. Later in 1967, Dr. Allen S. Breed invented and developed a key component for automotive use in 1967, the ball-in-tube inertial sensor for crash detection. Breed Corporation then marketed this innovation to Chrysler.
In 1944, laminated glass was introduced in the PV model. After Vattenfall engineers presented their pioneering work to Volvo in the 1950s, Volvo engineer Nils Bohlin invented and patented the modern three-point safety belt, which became standard on all Volvo cars in 1959, and then made this design patent open in the interest of safety and made it available to other car manufacturers for free. Additionally, Volvo developed the first rear-facing child seat in 1964 and introduced its own booster seat in 1978.
Until the beginning of the 19th century anchors were of imperfect manufacture, the means of effecting good and efficient welding being absent and the iron poor, whilst the arms, being straight, generally parted at the crown, when weighing from good holding-ground. A clerk in Plymouth Yard, named Pering, in the early part of that century (1813) introduced curved arms; and after 1852 the British admiralty anchor, under the direction of the Board, was supplied to H.M. ships, followed by Lieutenant ("afterwards Captain") Rodger's anchor. Rodger's anchor marked a great departure from the form of previous anchors. The arms were formed in one piece, and were pivoted at the crown on a bolt passing through the forked shank. The points or pees to the palms were blunt. This anchor had an excellent reputation amongst nautical men of that period, and by the committee on anchors, appointed by the British admiralty in 1852, it was placed second only to the anchor of Trotman.
Later came the self-canting and close-stowing Martin anchor, which, passing through successive improvements, became the improved Martin anchor made of forged iron. A projection in the center of the arms works in a recess at the hub of the shank; the vacancies outside the shank are filled by blocks bolted through on each side, and are flush with the side plates, which keep the flukes in position.
The introduction of cast steel in 1894 led to the improved Martin-Adelphi pattern, in which the crown and arms are cast in one, and, with the stock, are made of cast steel, the shank remaining of forged iron. A projection in the crown works in a recess (right image), and is secured in its place by a forged steel pin, fitted with a nut and washer, which passes through the crown and the heel of the shank.
In 1869, British inventor Montague Redgrave settled in the United States and manufactured bagatelle tables in Cincinnati, Ohio. In 1871 Redgrave was granted U.S. Patent #115,357 for his "Improvements in Bagatelle", another name for the spring launcher that was first introduced in "". The game also shrank in size to fit atop a bar or counter. The balls became marbles and the wickets became small metal pins. Redgrave's popularization of the spring launcher and innovations in game design are acknowledged as the birth of pinball in its modern form.
Glock pistols are designed with three independent safety mechanisms to prevent accidental discharge. The system, designated "Safe Action" by Glock, consists of an external integrated trigger safety and two automatic internal safeties: a firing pin safety, and a drop safety. The external safety is a small inner lever contained in the trigger. Pressing the lever activates the trigger bar and sheet metal connector. The firing pin safety is a solid hardened steel pin that, in the secured state, blocks the firing pin channel (disabling the firing pin in its longitudinal axis). It is pushed upward to release the firing pin for firing only when the trigger is actuated and the safety is pushed up through the backward movement of the trigger bar. The drop safety guides the trigger bar in a ramp that is released only when direct rearward pressure is applied to the trigger. The three safety mechanisms are automatically disengaged one after the other when the trigger is squeezed, and are automatically reactivated when the trigger is released. This passive safety system omits the manipulation of traditional on-off levers, hammers, or other external safeties as found in many other handgun designs. The ability to fire immediately, without worrying about an external safety, is one feature Glock has stressed as an advantage when selling its guns, especially to police departments.
Humpty Dumpty is a historically important pinball machine released by Gottlieb on October 25, 1947. Named after Humpty Dumpty, the nursery rhyme character, it is the first pinball machine to include flippers — invented by Harry Mabs  — distinguishing it from earlier bagatelle game machines.
The endpin or spike is made of wood, metal or rigid carbon fibre and supports the cello in playing position. The endpin can be retracted into the hollow body of the instrument when the cello is being transported in its case. This makes the cello easier to move about. When the performer wishes to play the cello, the endpin is pulled out to lengthen it. The endpin is locked into the player's preferred length with a screw mechanism. The adjustable nature of endpins enables performers of different ages and body sizes to adjust the endpin length to suit them. In the Baroque period the cello was held between the calves, as there was no endpin at that time. The endpin was "introduced by Adrien Servais 1845 to give the instrument greater stability". Modern endpins are retractable and adjustable; older ones were removed when not in use. (The word "endpin" sometimes also refers to the button of wood located at this place in all instruments in the violin family, but this is usually called "tailpin".) The sharp tip of the cello's endpin is sometimes capped with a rubber tip that protects the tip from dulling and prevents the cello from slipping on the floor. Many cellists use a rubber pad with a metal cup to keep the tip from slipping on the floor. A number of accessories to keep the endpin from slipping; these include ropes which attach to the chair leg and other devices.
Stainless steel was invented in 1913 by Harry Brearley of Sheffield, working for Firth Brown Steels (now called Sheffield Forgemasters). SAE 304 stainless steel is the most common stainless steel today, invented by Dr William Herbert Hatfield FRS in 1924 at Firth-Vickers known as Staybrite 18/8, a chromium-nickel steel. Many Swiss watches were mostly made out of Staybrite.
From the first scientific investigations of the pendulum around 1602 by Galileo Galilei, the regular motion of pendulums was used for timekeeping, and was the world's most accurate timekeeping technology until the 1930s. The pendulum clock invented by Christian Huygens in 1658 became the world's standard timekeeper, used in homes and offices for 270 years, and achieved accuracy of about one second per year before it was superseded as a time standard by the quartz clock in the 1930s. Pendulums are also used in scientific instruments such as accelerometers and seismometers. Historically they were used as gravimeters to measure the acceleration of gravity in geophysical surveys, and even as a standard of length. The word "pendulum" is new Latin, from the Latin "pendulus", meaning 'hanging'.
The portable version of the defibrillator was invented in the mid-1960s by Frank Pantridge in Belfast, Northern Ireland.
PVC or polyvinyl chloride production dates back to the 19th century but began being widely used in the 1950s when companies discovered its versatility. By the 1980s, 20 companies were producing PVC. The advancements in chemical makeup made the material ideal for construction. Its low cost, durability, and processability made it a widely used product outside of construction into markets like IT, healthcare, and transportation The market for PVC extended out of construction into beauty products like aerosol hairspray. PVC was largely deemed harmless until four workers died of angiosarcoma in a PVC production factory in Louisville, Kentucky. After this, the vinyl industry developed a standard of one part per million (1ppm) as the acceptable level during the production of PVC and also removed PVC from hairspray products (award of commendation article). The Vinyl Institute claimed that only resin workers were at risk during the production and that the new (1ppm) standard protected against that.
On July 31, 1790 inventor Samuel Hopkins of Pittsford, Vermont became the first person to be issued a patent in the United States. His patented invention was an improvement in the "making of Pot Ash by a new apparatus & process." These earliest patent law required that a working model of each invention be produced in miniature.
On July 31, 1790 inventor Samuel Hopkins of Pittsford, Vermont became the first person to be issued a patent in the United States. His patented invention was an improvement in the "making of Pot Ash by a new apparatus & process." The earliest patent law required that a working model of each invention be produced in miniature.
When NASCAR was founded in 1948, its sole tire supplier at the time was the Firestone Tire and Rubber Company. In 1954, Goodyear entered the sport and engaged in a tire war with Firestone for the next two decades. In response to the deaths of Jimmy Pardue and Billy Wade, both Goodyear and Firestone started manufacturing the "Inner Liner Safety Spare" - also known in NASCAR as "Lifeguard", which was a second envelope inside the tire that prevented instantaneous deflating and allowed drivers to return to pit road after experiencing tire failure. Controversy erupted at Talladega Superspeedway's debut race in 1969, when drivers experienced tire failures during practice, resulting in Firestone withdrawing from the race and Richard Petty leading a driver walkout over safety concerns. Both tire manufacturers claimed race victories and speed records until Firestone withdrew from NASCAR in 1974.
Founded in 1985, Pinball Expo is the longest-running event dedicated to pinball. It was conceived in 1984 by Robert "Rob" Berk of Warren, Ohio, with the purpose of honoring his heroes of the pinball industry; the artists and designers. With the assistance of Bill Kurtz of Cleveland, Ohio, and later Mike Pacak of Canfield, Ohio, the trio held their first event over the weekend of November 22–24, 1985 at the Holiday Inn O'Hare/Kennedy in Rosemont, Illinois. The inaugural event attracted around 100 attendees from all parts of the world and a dozen vendors. The expo offers seminars, a tour of a pinball factory, an autograph session, tournaments, an exhibit hall of pinball machines, parts, and related paraphernalia, and much more. On October 26, 1991, the Pinball Expo launched the Pinball Expo Hall of Fame and inducted its first class of pinball luminaries: David Gottlieb, Ray Moloney, Sam Stern, and Harry E. Williams. The event is open to the general public.
To the extent that cultural contributions comprise invention, innovation, and progress, Springfield has been, historically, one of the nation's most innovative cities. In 1819, inventor Thomas Blanchard invented the lathe in Springfield, which would catalyze manufacturing developments now known the world over as interchangeable parts and the assembly line. In 1825, Blanchard also built the first American car, a "horseless carriage," which was powered by steam. In 1844, inventor Charles Goodyear perfected and patented his process for making vulcanized rubber in Springfield - as of 2011, as it has been for many years previous, Goodyear's name is known the world over for rubber production. In 1868, inventor Margaret E. Knight invented a machine for folding and gluing flat-bottomed paper bags.
The first use of an external defibrillator on a human was in 1947 by Claude Beck. The portable version of the defibrillator was invented in the mid-1960s by Frank Pantridge in Belfast, Northern Ireland, a pioneer in emergency medical treatment.
In 1789, Franz Aepinus developed a device with the properties of a "condenser" (now known as a capacitor.) The Aepinus condenser was the first capacitor developed after the Leyden jar, and was used to demonstrate conduction and induction. The device was constructed so that the space between two plates could be adjusted, and the glass dielectric separating the two plates could be removed or replaced with other materials.
He applied for another patent on an alloy he called stainless steel, now known as martensitic stainless steel. The Patent Office rejected his application saying that it was not a new alloy. Haynes conceded their point, but submitted a second application and supplied a sample showing the stainlessness of his alloy when created using his exact proportions of metals, and it was granted. At the urging of his wife, he created the first set of stainless steel silverware for her personal use. The first piece of stainless steel was forged by Homer Dan Farmer in Haynes laboratory. It was a large meat knife and was donated to the Haynes Museum by the family of Dan Heflin, grandson of Homer Dan Farmer. In later years he claimed to have created stainless steel because she did not enjoy polishing their silver tableware. British metallurgist Harry Brearley independently produced an identical alloy around the same time and applied for an American patent and found that one already existed. Brearley had also created other innovations for the metal, but they were of little value without the stainless steel patent. He sought out Haynes and the two decided to pool their findings in a single company to produce the alloy. Haynes sold his stainless steel patent in 1918 to the American Stainless Steel Company, a company Brearley had created with the assistance of investors in Pennsylvania. In exchange he and his estate received royalties on its production until the patent expired in 1930. The stock he received as payment allowed him to gain a seat among the company's board of directors and he installed his son, March, to represent him. The income from the transaction led Haynes to begin the accumulation of a large fortune.
Initial Pinto deliveries in the early years used the English () and German () engines tuned for performance (see below). The 2,000 cc engine used a two barrel carburetor where just one bore was bigger than that used on the Maverick. With the low weight (not much above ) and the SOHC engine it rated a 10.8 second 0–60 time. With the advent of emission control requirements, Ford moved from the European sourced to domestically sourced engines, using new or modified designs. New safety legislation impacted bumpers and other parts adding to the weight of the car, reducing performance. Revised SAE standards in 1972 dropped the Pinto's engine to — and the engine to .
"We designed the building from the inside out, not the outside in,” said Loretta H. Cockrum, Foram’s founder, chairman and CEO. “We wanted the most efficient office building ever designed, with no wasted space or wasted energy. This is a building of the future more than a building of the present. A lot of love has gone into that building, and a lot of pride."
The Risdon Manufacturing Company, established in Naugatuck around 1910, began by producing safety pins. Local housewives and children were often hired to attach the pins to cardboard for easy sale. Risdon became the manufacturer of total packaging for cosmetics, personal, household and other consumer products and home sewing notions such as common pins, needles, snaps and other accessories. It is now the Crown Risdon Co., headquartered in Watertown, Connecticut.
Winfield Toll Bridge, also known as the Ross Booth Memorial Bridge, is a historic three-span cantilever Warren Truss bridge located at Winfield and Red House, Putnam County, West Virginia. It was built in 1955, and spans the Kanawha River, carrying West Virginia Route 34. The cantilever through-truss consists of two anchor spans each 245 feet in length and the main span 462 feet in length between pier center lines. The main span consists of two 128 feet, 4 inch, cantilever arms and a 205 feet, 4 inch, suspended span.
Morton wore a jean jacket held together by safety pins as early as 1971, years before the use of safety pins became a widespread part of punk fashion. The use of safety pins in clothing and piercings was later popularized by artists such as Richard Hell, the Sex Pistols and others during the punk rock explosion of the late 70's. It was a jacket that Morton had admired a few years prior on his friend and mentor, Royce Dendler, an assistant professor at Oberlin College, whom Morton met when he was 14 years of age. Morton later visited Dendler while he was attending SVA and Dendler was also living in New York at the time. Upon inquiring as to the jacket's current whereabouts, Dendler answered by pointing to the doormat below them. Morton offered to replace the doormat and asked if he could have the jacket even though it was now tattered, in need of much repair. Morton subsequently repaired the jacket using safety pins to make it wearable and liked the look so much that he gleefully added even more safety pins. It's also been said that Morton wrote the lyrics to one of his earliest songs, "Mr. Crab", after Dendler "walked him around New York and told him to write them." He recorded the song a few weeks later in September 1972 and it was eventually released in 1997 on the "Those Were Different Times" 3x10" vinyl set on Scat Records credited to The Styrenes.