Drill scheme

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A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or fastening various materials together with the use of fasteners. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting tool does the work of cutting into the target material. This may be slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling), crushing and removing pieces of the workpiece (SDS masonry drill), countersinking, counterboring, or other operations.

Drills are commonly used in woodworking, metalworking, construction and do-it-yourself projects. Specially designed drills are also used in medicine, space missions and other applications. Drills are available with a wide variety of performance characteristics, such as power and capacity.

History[link]

A wooden drill handle and other carpentry tools found on board the 16th century carrack Mary Rose.

The earliest drills existed some thirty-five thousand years ago. The drills consisted of little more than a pointed rock which would be spun between the hands. ^[1] The next major development was bow drills which date back to the ancient Harappans and Egyptians. The drill press as a machine tool evolved from the bow drill and is many centuries old. It was powered by various power sources over the centuries, such as human effort, water wheels, and windmills, often with the use of belts. With the coming of the electric motor in the late 19th century, there was a great rush to power machine tools with such motors, and drills were among them. The invention of the first electric drill is credited to Arthur James Arnot and William Blanch Brain,^[2] in 1889, at Melbourne, Australia. Wilhelm Fein^[3] invented the portable electric drill in 1895, at Stuttgart, Germany. In 1917, Black & Decker patented a trigger-like switch mounted on a pistol-grip handle.^[4]

Types[link]

Inside an electric drill

There are many types of drills: some are powered manually, others use electricity (electric drill) or compressed air (pneumatic drill) as the motive power, and a minority are driven by an internal combustion engine (for example, earth drilling augers). Drills with a percussive action (hammer drills) are mostly used in hard materials such as masonry (brick, concrete and stone) or rock. Drilling rigs are used to bore holes in the earth to obtain water or oil. Oil wells, water wells, or holes for geothermal heating are created with large drilling rigs. Some types of hand-held drills are also used to drive screws and other fasteners. Some small appliances that have no motor of their own may be drill-powered, such as small pumps, grinders, etc.

Carpenter using a crank-powered brace to drill a hole

Hand tools[link]

A variety of hand-powered drills have been employed over the centuries. Here are a few, starting with approximately the oldest:

• Bow drill
• Brace and bit
• Gimlet
• Breast drill, also known as "eggbeater" drill
• Push drill, a tool using a spiral ratchet mechanism
• Pin chuck, a small hand-held jewellers drill

Pistol-grip (corded) drill[link]

Anatomy of a pistol-grip corded drill.

Drills with pistol grips are the most common type in use today, and are available in a huge variety of subtypes. A less common type is the right-angle drill, a special tool used by tradesmen such as plumbers and electricians.

For much of the 20th century, many attachments could commonly be purchased to convert corded electric hand drills into a range of other power tools, such as orbital sanders and power saws, more cheaply than purchasing conventional, self-contained versions of those tools (the greatest saving being the lack of an additional electric motor for each device). As the prices of power tools and suitable electric motors have fallen, however, such attachments have become much less common. A similar practice is currently employed for cordless tools where the battery, the most expensive component, is shared between various motorised devices, as opposed to a single electric motor being shared between mechanical attachments.

Drills can also be used at an angle to join two boards.

Hammer drill[link]

The hammer drill is similar to a standard electric drill, with the exception that it is provided with a hammer action for drilling masonry. The hammer action may be engaged or disengaged as required. Most electric hammer drills are rated (input power) at between 600 and 1100 watts. The efficiency is usually 50-60% i.e. 1000 watts of input is converted into 500-600 watts of output (rotation of the drill and hammering action).

The hammer action is provided by two cam plates that make the chuck rapidly pulse forward and backward as the drill spins on its axis. This pulsing (hammering) action is measured in Blows Per Minute (BPM) with 10,000 or more BPMs being common. Because the combined mass of the chuck and bit is comparable to that of the body of the drill, the energy transfer is inefficient and can sometimes make it difficult for larger bits to penetrate harder materials such as poured concrete. The operator experiences considerable vibration, and the cams are generally made from hardened steel to avoid them wearing out quickly. In practice, drills are restricted to standard masonry bits up to 13 mm (1/2 inch) in diameter. A typical application for a hammer drill is installing electrical boxes, conduit straps or shelves in concrete.

In contrast to the cam-type hammer drill, a rotary/pneumatic hammer drill accelerates only the bit. This is accomplished through a piston design, rather than a spinning cam. Rotary hammers have much less vibration and penetrate most building materials. They can also be used as "drill only" or as "hammer only" which extends their usefulness for tasks such as chipping brick or concrete. Hole drilling progress is greatly superior to cam-type hammer drills, and these drills are generally used for holes of 19 mm (3/4 inch) or greater in size. A typical application for a rotary hammer drill is boring large holes for lag bolts in foundations, or installing large lead anchors in concrete for handrails or benches.

A standard hammer drill accepts 6 mm (1/4 inch) and 13 mm (1/2 inch) drill bits, while a rotary hammer uses SDS or Spline Shank bits. These heavy bits are adept at pulverising the masonry and drill into this hard material with relative ease.

However, there is a big difference in cost. In the UK a cam hammer typically costs £12 or more, while a rotary/pneumatic costs £35 or more. In the US a typical hammer drill costs between $70 and $120, and a rotary hammer between $150 and $500 (depending on bit size). For DIY use or to drill holes less than 13 mm (1/2 inch) in size, the hammer drill is most commonly used.

Rotary hammer drill[link]

A rotary hammer drill used in construction

The rotary hammer drill (also known as a rotary hammer, roto hammer drill or masonry drill) combines a primary dedicated hammer mechanism with a separate rotation mechanism, and is used for more substantial material such as masonry or concrete. Generally, standard chucks and drills are inadequate and chucks such as SDS and carbide drills that have been designed to withstand the percussive forces are used. Some styles of this tool are intended for masonry drilling only and the hammer action cannot be disengaged. Other styles allow the drill to be used without the hammer action for normal drilling, or hammering to be used without rotation for chiselling.

Cordless drills[link]

Cordless drill

A cordless drill is an electric drill which uses rechargeable batteries. These drills are available with similar features to an AC mains-powered drill. They are available in the hammer drill configuration and most have a clutch, which aids in driving screws into various substrates while not damaging them. Also available are right angle drills, which allow a worker to drive screws in a tight space. While 21st century battery innovations allow significantly more drilling, large diameter holes (typically 12–25 mm (0.5–1.0 in) or larger) may drain current cordless drills quickly.

For continuous use, a worker will have one or more spare battery packs charging while drilling, and quickly swap them instead of having to wait an hour or more for recharging, although there are now Rapid Charge Batteries that can charge in 10–15 minutes.

Early cordless drills used interchangeable 7.2 V battery packs. Over the years battery voltages have increased, with 18 V drills being most common, but higher voltages are available, such as 24 V, 28 V, and 36 V. This allows these tools to produce as much torque as some corded drills.

Common battery types of are nickel-cadmium (NiCd) batteries and lithium-ion batteries, with each holding about half the market share. NiCd batteries have been around longer, so they are less expensive (their main advantage), but have more disadvantages compared to lithium-ion batteries. NiCd disadvantages are limited life, self-discharging, environment problems upon disposal, and eventually internally short circuiting due to dendrite growth. Lithium-ion batteries are becoming more common because of their short charging time, longer life, absence of memory effect, and low weight. Instead of charging a tool for an hour to get 20 minutes of use, 20 minutes of charge can run the tool for an hour. Lithium-ion batteries also have a constant discharge rate. The power output remains constant until the battery is depleted, something that nickel-cadmium batteries also lack, and which makes the tool much more versatile. Lithium-ion batteries also hold a charge for a significantly longer time than nickel-cadmium batteries, about two years if not used, vs. 1 to 4 months for a nickel-cadmium battery.

Drill press[link]

A drill press

A drill press (also known as pedestal drill, pillar drill, or bench drill) is a fixed style of drill that may be mounted on a stand or bolted to the floor or workbench. Portable models with a magnetic base grip the steel workpieces they drill. A drill press consists of a base, column (or pillar), table, spindle (or quill), and drill head, usually driven by an induction motor. The head has a set of handles (usually 3) radiating from a central hub that, when turned, move the spindle and chuck vertically, parallel to the axis of the column. The table can be adjusted vertically and is generally moved by a rack and pinion; however, some older models rely on the operator to lift and reclamp the table in position. The table may also be offset from the spindle's axis and in some cases rotated to a position perpendicular to the column. The size of a drill press is typically measured in terms of swing. Swing is defined as twice the throat distance, which is the distance from the center of the spindle to the closest edge of the pillar. For example, a 16-inch (410 mm) drill press has an 8-inch (200 mm) throat distance.

Old industrial drill press designed to be driven from the power source by a flat belt

A drill press has a number of advantages over a hand-held drill:

• Less effort is required to apply the drill to the workpiece. The movement of the chuck and spindle is by a lever working on a rack and pinion, which gives the operator considerable mechanical advantage
• The table allows a vise or clamp to be used to position and restrain the work, making the operation much more secure
• The angle of the spindle is fixed relative to the table, allowing holes to be drilled accurately and consistently
• Drill presses are almost always equipped with more powerful motors compared to hand-held drills. This enables larger drill bits to be used and also speeds up drilling with smaller bits.

For most drill presses—especially those meant for woodworking or home use—speed change is achieved by manually moving a belt across a stepped pulley arrangement. Some drill presses add a third stepped pulley to increase the number of available speeds. Modern drill presses can, however, use a variable-speed motor in conjunction with the stepped-pulley system. Medium-duty drill presses such as those used in machine shop (tool room) applications are equipped with a continuously variable transmission. This mechanism is based on variable-diameter pulleys driving a wide, heavy-duty belt. This gives a wide speed range as well as the ability to change speed while the machine is running. Heavy-duty drill presses used for metalworking are usually of the gear-head type described below.

Drill presses are often used for miscellaneous workshop tasks other than drilling holes. This includes sanding, honing, and polishing. These tasks can be performed by mounting sanding drums, honing wheels and various other rotating accessories in the chuck. This can be unsafe in some cases, as the chuck arbor, which may be retained in the spindle solely by the friction of a taper fit, may dislodge during operation if the side loads are too high.

Geared head drill press[link]

Geared head drill press. Shift levers on the head and a two speed motor control immediately in front of the quill handle select one of eight possible speeds

A geared head drill press is a drill press in which power transmission from the motor to the spindle is achieved solely through spur gearing inside the machine's head. No friction elements (e.g., belts) of any kind are used, which assures a positive drive at all times and minimizes maintenance requirements. Gear head drills are intended for metalworking applications where the drilling forces are higher and the desired speed (RPM) is lower than that used for woodworking.

Levers attached to one side of the head are used to select different gear ratios to change the spindle speed, usually in conjunction with a two- or three-speed motor. Most machines of this type are designed to be operated on three phase power and are generally of more rugged construction than equivalently sized belt-driven units. Virtually all examples have geared racks for adjusting the table and head position on the column.

Geared head drill presses are commonly found in tool rooms and other commercial environments where a heavy duty machine capable of production drilling and quick setup changes is required. In most cases, the spindle is machined to accept Morse taper tooling for greater flexibility. Larger geared head drill presses are frequently fitted with power feed on the quill mechanism, with an arrangement to disengage the feed when a certain drill depth has been achieved or in the event of excessive travel. Some gear-head drill presses have the ability to perform tapping operations without the need for an external tapping attachment. This feature is commonplace on larger gear head drill presses. A clutch mechanism drives the tap into the part under power and then backs it out of the threaded hole once the proper depth is reached. Coolant systems are also common on these machines to prolong tool life under production conditions.

Radial arm drill press[link]

A radial arm drill press is a large geared head drill press in which the head can be moved along an arm that radiates from the machine's column. As it is possible to swing the arm relative to the machine's base, a radial arm drill press is able to operate over a large area without having to reposition the workpiece. This saves considerable time because it is much faster to reposition the drill head than it is to unclamp, move, and then re-clamp the workpiece to the table. The size of work that can be handled may be considerable, as the arm can swing out of the way of the table, allowing an overhead crane or derrick to place a bulky workpiece on the table or base. A vise may be used with a radial arm drill press, but more often the workpiece is secured directly to the table or base, or is held in a fixture. Power spindle feed is nearly universal with these machines and coolant systems are common. Larger size machines often have power feed motors for elevating or moving the arm. The biggest radial arm drill presses are able to drill holes as large as four inches (101.6 millimeters) diameter in solid steel or cast iron. Radial arm drills are specified by the diameter of the column and the length of the arm. The length of the arm is usually the same as the maximum throat distance. The Radial Arm Drill pictured in this article is a 9-inch column x 3-foot arm. The maximum throat distance of this drill would be approximately 36", giving a swing of 72" (6 feet).

Mill drill[link]

Mill drills are a lighter alternative to a milling machine. They combine a drill press (belt driven) with the X/Y coordinate abilities of the milling machine's table and a locking collet that ensures that the cutting tool will not fall from the spindle when lateral forces are experienced against the bit. Although they are light in construction, they have the advantages of being space-saving and versatile as well as inexpensive, being suitable for light machining that may otherwise not be affordable.

Unusual uses[link]

• A household drill was used to save a boy's life in Australia. The boy suffered from potentially fatal bleeding within the brain after a fall from his bike. Having no proper medical tools, the attending doctor decided to use a household drill stored in the hospital maintenance room to remove a clot. This was done in order to relieve the blood pressure in the boy's brain. If this had not been done, the boy would have died in minutes. The doctor performed the procedure and was guided by a neurosurgeon over the phone. The boy was later airlifted to a larger hospital and recovered within days.^[5]
• Paul Gilbert and Billy Sheehan of Mr. Big use a cordless drill for the solo of Daddy, Brother, Lover, Little Boy commonly known as "The Electric Drill Song". This was done by using 3.3mm plectrums on a wooden dowel.
• The 1970s horror movies The Toolbox Murders and The Driller Killer depict deranged killers using battery powered drills to kill their victims.

Other perforation tools[link]

• Milling machines, metal lathes and routers are also often used for drilling.

See also[link]

• Boring
• Dental drill
• Unimat

References[link]

External links[link]

Wikimedia Commons has media related to: Drill

• Nonfatal Occupational Injuries Involving the Eyes - From US Department of Labor (Accessed 29 April 2007)
• NIOSH Power Tools Sound and Vibrations Database

Michael Jackson
Jackson at the White House in 1984
Background information
Birth name	Michael Joseph Jackson[1]
Also known as	King of Pop, MJ
Born	(1958-08-29)August 29, 1958 Gary, Indiana, U.S.
Died	June 25, 2009(2009-06-25) (aged 50) Los Angeles, California, U.S.
Genres	R&B, pop, rock, soul, dance, funk, disco, new jack swing
Occupations	Singer-songwriter, musician, composer, dancer, choreographer, record producer, actor, businessman, philanthropist
Instruments	Vocals
Years active	1964–2009
Labels	Motown, Epic, Legacy, MJJ Productions
Associated acts	The Jackson 5 Michael Jackson's Signature
Website	www.michaeljackson.com

Michael Joseph Jackson^[1] (August 29, 1958 – June 25, 2009) was an American recording artist, entertainer, and businessman. Often referred to as the King of Pop, or by his initials MJ,^[2] Jackson is recognized as the most successful entertainer of all time by Guinness World Records. His contribution to music, dance, and fashion, along with a much-publicized personal life, made him a global figure in popular culture for over four decades. The seventh child of the Jackson family, he debuted on the professional music scene along with his brothers as a member of The Jackson 5 in 1964, and began his solo career in 1971.

In the early 1980s, Jackson became a dominant figure in popular music. The music videos for his songs, including those of "Beat It", "Billie Jean", and "Thriller", were credited with transforming the medium into an art form and a promotional tool, and the popularity of these videos helped to bring the relatively new television channel MTV to fame. Videos such as "Black or White" and "Scream" made him a staple on MTV in the 1990s. Through stage performances and music videos, Jackson popularized a number of complicated dance techniques, such as the robot and the moonwalk, to which he gave the name. His distinctive musical sound and vocal style influenced numerous hip hop, post-disco, contemporary R&B, pop and rock artists.

Jackson's 1982 album Thriller is the best-selling album of all time. His other records, including Off the Wall (1979), Bad (1987), Dangerous (1991), and HIStory (1995), also rank among the world's best-selling. Jackson is one of the few artists to have been inducted into the Rock and Roll Hall of Fame twice. He was also inducted into the Dance Hall of Fame as the first (and currently only) dancer from the world of pop and rock 'n' roll. Some of his other achievements include multiple Guinness World Records; 13 Grammy Awards (as well as the Grammy Legend Award and the Grammy Lifetime Achievement Award); 26 American Music Awards (more than any other artist, including the "Artist of the Century"); 13 number-one singles in the United States in his solo career (more than any other male artist in the Hot 100 era); and the estimated sale of over 750 million records worldwide. Jackson won hundreds of awards, which made him the most-awarded recording artist in the history of popular music.^[3] He was also one of the world's most prominent humanitarians and philanthropists; personally, and through his Heal the World Foundation, he donated more than $300 million in charity, and held the Guinness World Record for having supported the most charities out of any pop star.^[4][5]

Aspects of Jackson's personal life, including his changing appearance, personal relationships, and behavior, generated controversy. In 1993, he was accused of child sexual abuse, but the case was settled out of court and no formal charges were brought. In 2005, he was tried and acquitted of further child sexual abuse allegations and several other charges after the jury found him not guilty on all counts. While preparing for his concert series titled This Is It, Jackson died of acute propofol and benzodiazepine intoxication on June 25, 2009, after suffering from cardiac arrest. The Los Angeles County Coroner ruled his death a homicide, and his personal physician was convicted of involuntary manslaughter. Jackson's death triggered a global outpouring of grief, and as many as one billion people around the world reportedly watched his public memorial service on live television. In March 2010, Sony Music Entertainment signed a $250 million deal with Jackson's estate to retain distribution rights to his recordings until 2017, and to release seven posthumous albums over the decade following his death.^[6]

Life and career[link]

Early life and The Jackson 5 (1958–1975)[link]

Jackson's childhood home in Gary, Indiana, showing floral tributes after his death

Jackson (center) as a member of The Jackson 5 in 1972

Michael Jackson was born on August 29, 1958, the eighth of ten children in an African American working-class family who lived in a small 3-room house in Gary, Indiana,^[7] an industrial city near Chicago. His mother, Katherine Esther Scruse, was a devout Jehovah's Witness, and his father, Joseph Walter "Joe" Jackson, was a steel mill worker who performed with an R&B band called The Falcons. Jackson had three sisters: Rebbie, La Toya, and Janet, and five brothers: Jackie, Tito, Jermaine, Marlon, and Randy.^[8] A sixth brother, Brandon, died shortly after birth.^[9]

Jackson had a troubled relationship with his father, Joe.^[10][11][12] Joseph acknowledged in 2003 that he regularly whipped Jackson as a boy.^[12] Jackson stated that he was physically and emotionally abused during incessant rehearsals, though he also credited his father's strict discipline with playing a large role in his success.^[10] Jackson first spoke openly about his childhood abuse in an interview with Oprah Winfrey, broadcast in February 1993. He admitted that he had often cried from loneliness and he would vomit on the sight of his father. Jackson's father was also said to have verbally abused Jackson, saying that he had a fat nose on numerous occasions.^[13] In fact, Michael Jackson's deep dissatisfaction with his appearance, his nightmares and chronic sleep problems, his tendency to remain hyper-compliant especially with his father, and to remain child-like throughout his adult life are in many ways consistent with the effects of this chronic maltreatment he endured as a young child.^[14]

In an interview with Martin Bashir, later included in the 2003 broadcast of Living with Michael Jackson, Jackson acknowledged that his father hurt him when he was a child, but was nonetheless a "genius", as he admitted his father's strict discipline played a huge role in his success. When Bashir dismissed the positive remark and continued asking about beatings, Jackson put his hand over his face and objected to the questions. He recalled that Joseph sat in a chair with a belt in his hand as he and his siblings rehearsed, and that "if you didn't do it the right way, he would tear you up, really get you".^[15][16]

In 1964, Michael and Marlon joined the Jackson Brothers—a band formed by brothers Jackie, Tito, and Jermaine—as backup musicians playing congas and tambourine. Jackson later began performing backup vocals and dancing. When he was eight, Jackson began sharing the lead vocals with his older brother Jermaine, and the group's name was changed to The Jackson 5.^[8] The band toured the Midwest extensively from 1966 to 1968, frequently performing at a string of black clubs known as the "chitlin' circuit", where they often opened stripteases and other adult acts. In 1966, they won a major local talent show with renditions of Motown hits and James Brown's "I Got You (I Feel Good)", led by Michael.^[17]

The Jackson 5 recorded several songs, including "Big Boy", for the local record label Steeltown in 1967, before signing with Motown Records in 1968.^[8] Rolling Stone magazine later described the young Michael as "a prodigy" with "overwhelming musical gifts," writing that he "quickly emerged as the main draw and lead singer."^[18] The group set a chart record when its first four singles ("I Want You Back", "ABC", "The Love You Save", and "I'll Be There") peaked at number one on the Billboard Hot 100.^[8] Between 1972 and 1975, Michael released four solo studio albums with Motown, among them Got to Be There and Ben, released as part of the Jackson 5 franchise, and producing successful singles such as "Got to Be There", "Ben", and a remake of Bobby Day's "Rockin' Robin".

The Jackson 5 "became a cutting-edge example of black crossover artists... five working-class black boys with afros and bell bottoms, and they really didn't have to trade any of that stuff in order to become mainstream stars."^[19]

The group's sales began declining in 1973, and the band members chafed under Motown's strict refusal to allow them creative control or input. Although they scored several top 40 hits, including the top 5 disco single "Dancing Machine" and the top 20 hit "I Am Love", the Jackson 5 left Motown in 1975.^[20]

[edit] Move to Epic and Off the Wall (1975–81)

In June 1975, the Jackson 5 signed with Epic Records, a subsidiary of CBS Records^[20] and renamed themselves the Jacksons. Younger brother Randy formally joined the band around this time, while Jermaine left to pursue a solo career.^[21] They continued to tour internationally, releasing six more albums between 1976 and 1984, during which Michael was the lead songwriter, writing hits such as "Shake Your Body (Down to the Ground)", "This Place Hotel", and "Can You Feel It".^[17] In 1978, he starred as the scarecrow in the musical, The Wiz, a box-office disaster. It was here that he teamed up with Quincy Jones, who was arranging the film's musical score. Jones agreed to produce Jackson's next solo album, Off the Wall.^[22] In 1979, Jackson broke his nose during a complex dance routine. His subsequent rhinoplasty was not a complete success; he complained of breathing difficulties that would affect his career. He was referred to Dr. Steven Hoefflin, who performed Jackson's second rhinoplasty and subsequent operations.^[23]

Jones and Jackson produced the Off the Wall album together. Songwriters for the album included Jackson, Rod Temperton, Stevie Wonder, and Paul McCartney. Released in 1979, it was the first solo album to generate four U.S. top 10 hits, including the chart-topping singles "Don't Stop 'til You Get Enough" and "Rock with You".^[24][25] It reached number three on the Billboard 200 and eventually sold over 20 million copies worldwide.^[26] In 1980, Jackson won three awards at the American Music Awards for his solo efforts: Favorite Soul/R&B Album, Favorite Soul/R&B Male Artist, and Favorite Soul/R&B Single for "Don't Stop 'Til You Get Enough".^[27][28] That year, he also won Billboard Year-End for Top Black Artist and Top Black Album and a Grammy Award for Best Male R&B Vocal Performance, also for "Don't Stop 'Til You Get Enough".^[24] Jackson again won at the American Music Awards in 1981 for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist.^[29] Despite its commercial success, Jackson felt Off the Wall should have made a much bigger impact, and was determined to exceed expectations with his next release.^[30] In 1980, he secured the highest royalty rate in the music industry: 37 percent of wholesale album profit.^[31]

[edit] Thriller and Motown 25: Yesterday, Today, Forever (1982–83)

In 1982, Jackson contributed the song "Someone In the Dark" to the storybook for the film E.T. the Extra-Terrestrial; the record won a Grammy for Best Recording for Children in 1984. In the same year he won another seven Grammys and eight American Music Awards (including the Award of Merit, the youngest artist to win it), making him the most awarded in one night for both award shows.^[32][33] These awards were thanks to the Thriller album, released in late 1982, which was 1983's best-selling album worldwide^[34][35] and became the best-selling album of all time in the United States,^[36] as well as the best-selling album of all time worldwide, selling an estimated 110 million copies so far.^[37] The album topped the Billboard 200 chart for 37 weeks and was in the top 10 of the 200 for 80 consecutive weeks. It was the first album to have seven Billboard Hot 100 top 10 singles, including "Billie Jean", "Beat It", and "Wanna Be Startin' Somethin'".^[38] Thriller was certified for 29 million shipments by the RIAA, giving it Double Diamond status in the United States. The album won also another Grammy for Best Engineered Recording – Non Classical in 1984, awarding Bruce Swedien for his work.^[39] Jackson's attorney John Branca noted that Jackson had the highest royalty rate in the music industry at that point: approximately $2 for every album sold. He was also making record-breaking profits from sales of his recordings. The videocassette of the documentary The Making of Michael Jackson's Thriller sold over 350,000 copies in a few months. The era saw the arrival of novelties like dolls modeled after Michael Jackson, which appeared in stores in May 1984 at a price of $12.^[40] Biographer J. Randy Taraborrelli writes that, "Thriller stopped selling like a leisure item—like a magazine, a toy, tickets to a hit movie—and started selling like a household staple."^[41] In 1985, The Making of Michael Jackson's Thriller won a Grammy for Best Music Video, Longform.^[32] In December 2009, the music video for "Thriller" was selected for the National Film Registry by the Library of Congress, "Thriller" is the first music video ever to be inducted.^[42][43][44]

Time described Jackson's influence at that point as "Star of records, radio, rock video. A one-man rescue team for the music business. A songwriter who sets the beat for a decade. A dancer with the fanciest feet on the street. A singer who cuts across all boundaries of taste and style and color too".^[40] The New York Times wrote that, "in the world of pop music, there is Michael Jackson and there is everybody else".^[45]

On March 25th 1983, Michael Jackson reunited with his brothers for a legendary live performance which was taped for a Motown 25: Yesterday, Today, Forever television special. The show aired on May 16, 1983, to an audience of 47 million viewers, and featured the Jacksons and a number of other Motown stars. It is best remembered for Jackson's solo performance of "Billie Jean". Wearing a distinctive black sequin jacket and golf glove decorated with rhinestones, he debuted his signature dance move, the moonwalk, which former Soul Train dancer and Shalamar member Jeffrey Daniel had taught him three years before. The Jacksons' performance drew comparisons to Elvis Presley's and The Beatles' appearances on The Ed Sullivan Show.^[46] Anna Kisselgoff of The New York Times later wrote, "The moonwalk that he made famous is an apt metaphor for his dance style. How does he do it? As a technician, he is a great illusionist, a genuine mime. His ability to keep one leg straight as he glides while the other bends and seems to walk requires perfect timing."^[47]

Pepsi, "We Are the World" and business career (1984–85)[link]

Jackson with a Knott's Berry Farm Snoopy mascot in April 1984

On January 27, 1984, Michael and other members of the Jacksons filmed a Pepsi Cola commercial, overseen by executive Phil Dusenberry,^[48] from ad agency BBDO and Pepsi's Worldwide Creative Director, Alan Pottasch at the Shrine Auditorium in Los Angeles. In front of a full house of fans during a simulated concert, pyrotechnics accidentally set Jackson's hair on fire. He suffered second-degree burns to his scalp. Jackson underwent treatment to hide the scars on his scalp, and he also had his third rhinoplasty shortly thereafter.^[23] Jackson never recovered from this injury. Pepsi settled out of court, and Jackson donated his $1.5 million settlement to the Brotman Medical Center in Culver City, California, which now has a "Michael Jackson Burn Center" in honor of his donation.^[49] Dusenberry later recounted the episode in his memoir, Then We Set His Hair on Fire: Insights and Accidents from a Hall of Fame Career in Advertising.

On May 14, 1984, Jackson was invited to the White House to receive an award from President Ronald Reagan for his support of charities that helped people overcome alcohol and drug abuse.^[50] Jackson won eight awards during the Grammys that year. Unlike later albums, Thriller did not have an official tour to promote it, but the 1984 Victory Tour, headlined by The Jacksons, showcased much of Jackson's new solo material to more than two million Americans. He donated all the funds (around $8 million) raised from the Victory Tour to charity.^[51] He also co-wrote the charity single "We Are the World" in 1985 with Lionel Richie, which was released worldwide to aid the poor in the U.S. and Africa. It became one of the best-selling singles of all time, with nearly 30 million copies sold and millions of dollars donated to famine relief. In 1986, "We Are the World" won four Grammys (one for Jackson for Song of the Year). American Music Award directors removed the charity song from the competition because they felt it would be inappropriate, but recognized it with two special honors (one for the creation of the song and one for the USA for Africa idea). They are the only AMAs that Jackson won as non-solo artist.^{[52][53][54][55]}

Jackson at the White House South Portico with President Ronald Reagan and first lady Nancy Reagan, 1984

In 1984, ATV Music Publishing, which had the copyrights to nearly 4000 songs, including the Northern Songs catalog that contained the majority of the Lennon–McCartney compositions recorded by The Beatles, was put up for sale by Robert Holmes à Court.^[56] Jackson had become interested in owning music catalogs after working with Paul McCartney in the early 1980s: Jackson had learned McCartney made approximately $40 million a year from other people's songs.^[57] In 1981,^[58] McCartney was offered the ATV music catalog for £20 million ($40 million).^[57][59] According to McCartney, he contacted Yoko Ono about making a joint purchase by splitting the cost equally at £10 million each, but Ono thought they could buy it for £5 million each.^[57][59] When they were unable to make the joint purchase, McCartney let the offer fall through, not wanting to be the sole owner of the Beatles' songs.^[58][59]

According to a negotiator for Holmes à Court in the 1984 sale, "We had given Paul McCartney first right of refusal but Paul didn't want it at that time."^[60] Also, an attorney for McCartney assured Jackson's attorney, John Branca, that McCartney was not interested in bidding: McCartney reportedly said "It's too pricey".^[57][58] But there were several other companies and investors bidding. In September 1984, Jackson was first informed about the sale by Branca and sent a bid of $46 million on November 20, 1984.^[56] Jackson's agents thought they had a deal several times, but encountered new bidders or new areas of debate.^[56] In May 1985, Jackson's team walked away from talks after having spent over $1 million on four months of due diligence and on the negotiations.^[56]

In June 1985, Jackson and Branca learned that Charles Koppelman's and Marty Bandier's The Entertainment Co. had made a tentative agreement with Holmes à Court to buy ATV Music for $50 million.^[56] But in early August, Holmes à Court's team contacted Jackson and talks resumed. Jackson raised his bid to $47.5 million and it was accepted because he could close the deal more quickly, having already completed due diligence of ATV Music.^[56] He also agreed to visit Holmes à Court in Australia, where he would appear on the Channel Seven Perth Telethon.^[56][60] Jackson's purchase of ATV Music was finalized August 10, 1985.^[56]

[edit] Appearance, tabloids, Bad, films, autobiography and Neverland (1986–90)

Jackson's skin had been a medium-brown color for the entire duration of his youth, but starting in the mid 1980s, it gradually grew paler. The change gained widespread media coverage, including rumors that he might be bleaching his skin.^[61] According to J. Randy Taraborrelli's biography, in 1986, Jackson was diagnosed with vitiligo and lupus; the vitiligo partially lightened his skin, and the lupus was in remission; both illnesses made him sensitive to sunlight. The treatments he used for his condition further lightened his skin tone, and, with the application of pancake makeup to even out blotches, he could appear very pale.^[62] Jackson was also diagnosed with vitiligo in his autopsy.^[63] By the mid 1990s several surgeons speculated that he had undergone various nasal surgeries, a forehead lift, thinned lips, and cheekbone surgery—although Jackson denied this and insisted that he only had surgery on his nose.^[64] Jackson claimed that he had only two rhinoplasties and no other surgery on his face, although at one point he mentioned having a dimple created in his chin.^[65] Jackson lost weight in the early 1980s because of a change in diet and a desire for "a dancer's body".^[65] Witnesses reported that he was often dizzy and speculated that he was suffering from anorexia nervosa; periods of weight loss would become a recurring problem later in life.^[66]

During the course of his treatment, Jackson made two close friends: his dermatologist, Dr. Arnold Klein, and Klein's nurse Debbie Rowe. Rowe eventually became Jackson's second wife and the mother of his two eldest children. Long before becoming romantically involved with her, Jackson relied heavily on Rowe for emotional support. He also relied heavily on Klein, for medical and business advice.^[67]

Jackson became the subject of increasingly sensational reports. In 1986, the tabloids ran a story claiming that Jackson slept in a hyperbaric oxygen chamber to slow the aging process; he was pictured lying down in a glass box. Although the claim was untrue, according to tabloid reports that are widely cited, Jackson had disseminated the fabricated story himself.^[68][69] When Jackson bought a chimpanzee called Bubbles from a laboratory, he was reported to be increasingly detached from reality.^[70] It was reported that Jackson had offered to buy the bones of Joseph Merrick (the "elephant man") and although untrue, Jackson did not deny the story.^[68][69] Although initially he saw these stories as opportunities for publicity, he stopped leaking untruths to the press as they became more sensational. Consequently the media began making up their own stories.^[69][71][72] These reports became embedded in the public consciousness, inspiring the nickname "Wacko Jacko", which Jackson came to despise.^[73] Responding to the gossip, Jackson remarked to Taraborrelli:

Why not just tell people I'm an alien from Mars? Tell them I eat live chickens and do a voodoo dance at midnight. They'll believe anything you say, because you're a reporter. But if I, Michael Jackson, were to say, "I'm an alien from Mars and I eat live chickens and do a voodoo dance at midnight," people would say, "Oh, man, that Michael Jackson is nuts. He's cracked up. You can't believe a single word that comes out of his mouth."^[74]

Jackson wore a gold-plated military style jacket with belt in the Bad era

Jackson collaborated with George Lucas and Francis Ford Coppola on the 17-minute 3-D film Captain EO, which debuted in September 1986 at both the original Disneyland and at EPCOT in Florida, and in March 1987 at Tokyo Disneyland. The $30 million movie was a popular attraction at all three parks. A Captain EO attraction was later featured at Euro Disneyland after that park opened in 1992. All four parks' Captain EO installations stayed open well into the 1990s: Paris' installation was the last one to close, in 1998.^[75] The attraction would later return to Disneyland in 2010 after Jackson's death.^[76]

In 1987, Jackson disassociated himself from the Jehovah's Witnesses, in response to their disapproval of the Thriller video.^[77] With the industry expecting another major hit, Jackson's first album in five years, Bad (1987), was highly anticipated.^[78] It did not top Thriller as a commercial or artistic triumph, but Bad was still a substantial success in its own right.

The Bad album spawned seven hit singles in the U.S., five of which ("I Just Can't Stop Loving You", "Bad", "The Way You Make Me Feel", "Man in the Mirror" and "Dirty Diana") reached number one on the Billboard Hot 100 charts. This was a record for most number one Hot 100 singles from any one album, including Thriller.^[79] Although the title track's video was arguably derivative of the video for the earlier single "Beat It", the "Bad" video still proved to be one of Jackson's iconic moments. It was a gritty but colorful epic set against the backdrop of the New York City Subway system, with costuming and choreography inspired by West Side Story. As of 2012, the album sold between 30 and 45 million copies worldwide.^{[80][81][82][83][84][85][86]} Thanks to the Bad album, Bruce Swedien and Humberto Gatica won one Grammy in 1988 for Best Engineered Recording – Non Classical and Michael Jackson won one Grammy for Best Music Video, Short Form for "Leave Me Alone" in 1989.^[32][39] In the same year, Jackson won an Award of Achievement at the American Music Awards because Bad is the first album ever to generate five number one singles in the US, the first album to top in 25 countries and the best-selling album worldwide in 1987 and in 1988.^{[87][88][89][90]} In 1988, "Bad" won an American Music Award for Favorite Soul/R&B Single.^[91]

Front view: Jackson wearing the costume on a June 2, 1988 performance in Vienna, Austria

The Bad World Tour began on September 12 that year, finishing on January 14, 1989.^[92] In Japan alone, the tour had 14 sellouts and drew 570,000 people, nearly tripling the previous record of 200,000 in a single tour.^[93] Jackson broke a Guinness World Record   when 504,000 people attended seven sold-out shows at Wembley Stadium. He performed a total of 123 concerts to an audience of 4.4 million people. The Bad Tour turned out to be the last of Jackson's concert tours to include shows in the continental United States, although later tours did make it to Hawaii.

In 1988, Jackson released his first and only autobiography, Moonwalk, which took four years to complete and sold 200,000 copies.^[94] Jackson wrote about his childhood, The Jackson 5, and the abuse he had suffered.^[95] He also wrote about his facial appearance, saying he had had two rhinoplastic surgeries and a dimple created in his chin.^[65] He attributed much of the change in the structure of his face to puberty, weight loss, a strict vegetarian diet, a change in hair style, and stage lighting.^[65] Moonwalk reached the top position on The New York Times best sellers' list.^[96] The musician then released a film called Moonwalker, which featured live footage and short films that starred Jackson and Joe Pesci. The film was originally intended to be released to theaters but due to financial issues, the film was released direct-to-video. It saw a theatrical release in Germany, though. It debuted atop the Billboard Top Music Video Cassette chart, staying there for 22 weeks. It was eventually knocked off the top spot by Michael Jackson: The Legend Continues.^[97]

In March 1988, Jackson purchased land near Santa Ynez, California, to build Neverland Ranch at a cost of $17 million. He installed Ferris wheels, a menagerie, and a movie theater on the 2,700-acre (11 km²) property. A security staff of 40 patrolled the grounds. In 2003, it was valued at approximately $100 million.^[18][98] In 1989, his annual earnings from album sales, endorsements, and concerts was estimated at $125 million for that year alone.^[99] Shortly afterwards, he became the first Westerner to appear in a television ad in the Soviet Union.^[97]

His success resulted in his being dubbed the "King of Pop".^{[100][101][102][103]} The nickname was popularized by Elizabeth Taylor when she presented him with the Soul Train Heritage Award in 1989, proclaiming him "the true king of pop, rock and soul."^[104] President George H. W. Bush designated him the White House's "Artist of the Decade".^[105] From 1985 to 1990, he donated $500,000 to the United Negro College Fund, and all of the profits from his single "Man in the Mirror" went to charity.^[106][107] Jackson's live rendition of "You Were There" at Sammy Davis Jr.'s 60th birthday celebration received an Emmy nomination.^[97]

[edit] Dangerous, Heal the World Foundation and Super Bowl XXVII (1991–93)

In March 1991, Jackson renewed his contract with Sony for $65 million, a record-breaking deal at the time,^[108] displacing Neil Diamond's renewal contract with Columbia Records.^[109] He released his eighth album Dangerous in 1991. As of 2008, Dangerous had shipped seven million copies in the U.S. and had sold 32 million copies worldwide. The Dangerous album was co-produced by Teddy Riley, one of the pioneers of "new jack swing" which convinced Michael to feature a rapper on his album for the first time, the act worked and it turned out to be the best-selling album associated with that movement.^{[110][111][112]} In the United States, the album's first single "Black or White" was its biggest hit, reaching number one on the Billboard Hot 100 and remaining there for seven weeks, with similar chart performances worldwide.^[113] The album's second single "Remember the Time" spent eight weeks in the top five in the United States, peaking at number three on the Billboard Hot 100 singles chart.^[114] At the end of 1992, Dangerous was awarded 1992's best-selling album worldwide and "Black or White" was awarded 1992's best-selling single worldwide at the Billboard Music Awards. Additionally, he won an award as best-selling artist of the '80s.^[115] In 1993, Jackson performed the song at the Soul Train Music Awards in a chair, saying he had suffered an injury in rehearsals.^[116] In the UK and other parts of Europe, "Heal the World" was the biggest hit from the album; it sold 450,000 copies in the UK and spent five weeks at number two in 1992.^[114]