William Sellers (September 19, 1824 – January 24, 1905) was a mechanical engineer, manufacturer, businessman, noted abolitionist, and inventor who filed more than 90 patents, most notably the design for the United States standard screw thread, the standard bolt and machine screw thread still used today. As president of the

Franklin Institute The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memori ...

Philadelphia, Pennsylvania Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...

, Sellers proposed the adoption of a system of screw threads which was easier for ordinary mechanics and machinists to cut than a similar design by

Joseph Whitworth Sir Joseph Whitworth, 1st Baronet (21 December 1803 – 22 January 1887) was an English engineer, entrepreneur, inventor and philanthropist. In 1841, he devised the British Standard Whitworth system, which created an accepted standard for scre ...

. For many years, he led the

machine tool A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. Al ...

firm of William Sellers & Co., which was a very influential

machine tool builder A machine tool builder is a corporation or person that builds machine tools, usually for sale to manufacturers, who use them to manufacture products. A machine tool builder runs a machine factory, which is part of the machine industry. The machin ...

during the latter half of the 19th century.

Family

Sellers was born in

Upper Darby, Pennsylvania Upper Darby Township, often shortened to Upper Darby, is a home rule township in Delaware County, Pennsylvania. The township borders Philadelphia, the nation's sixth most populous city as of 2020 with 1.6 million residents. As of the 2020 ce ...

to John and Elizabeth (Poole) Sellers, into a

Quaker Quakers are people who belong to a historically Protestant Christian set of denominations known formally as the Religious Society of Friends. Members of these movements ("theFriends") are generally united by a belief in each human's abili ...

family full of industrial and manufacturing innovators. His cousins include George Escol Sellers (1808–1899), an inventor holding patents for a hill-climbing locomotive, a pulp-paper process, converting steamboats to coal, and removing brine from salt water, and

Coleman Sellers II Coleman Sellers II (January 28, 1827 – December 28, 1907) was a prominent American engineer, chief engineer of William Sellers & Co., professor of mechanics at the Franklin Institute, professor of engineering practice at Stevens Institute of Tec ...

(1827–1907), a five-term president of the Franklin Institute, who was instrumental in harnessing

Niagara Falls Niagara Falls () is a group of three waterfalls at the southern end of Niagara Gorge, spanning the Canada–United States border, border between the Provinces and territories of Canada, province of Ontario in Canada and the U.S. state, state ...

for electricity. Sellers was married in 1849 to Mary Ferris (1820–1870), with whom he had three children, Katherine (1852–1917), William (1856–1933), and Frances (1858–1859). He married again in 1873 to Amélie Haaszm (1842–1929), with whom he had another three children, Alexander (1875–1957), Richard (1881–1942), and Christine (1882–-1884). He died in his hometown on January 24, 1905 at the age of 81.

Career

After receiving a private education in a family-run school, he began apprenticing at age fourteen with his uncle, J. Morton Poole, in a machine shop near

Wilmington, Delaware Wilmington (Unami language, Lenape: ''Paxahakink /'' ''Pakehakink)'' is the largest city in the U.S. state of Delaware. The city was built on the site of Fort Christina, the first Swedish colonization of the Americas, Swedish settlement in North ...

. After seven years, he moved to

Providence, Rhode Island Providence is the capital and most populous city of the U.S. state of Rhode Island. One of the oldest cities in New England, it was founded in 1636 by Roger Williams, a Reformed Baptist theologian and religious exile from the Massachusetts ...

to run the shops of what eventually became the

Corliss Steam Engine A Corliss steam engine (or Corliss engine) is a steam engine, fitted with rotary valves and with variable valve timing patented in 1849, invented by and named after the American engineer George Henry Corliss of Providence, Rhode Island. Engines ...

Company. Returning to West Philadelphia to start his own machine company, he eventually formed a partnership with his brother-in-law Edward Bancroft (1811–1855) in 1848. After Bancroft's death in 1855, Sellers incorporated as William Sellers & Co., which continued to operate until 1947 when it was sold to the Consolidated Machine Tool Corporation and relocated to

Rochester, New York Rochester () is a City (New York), city in the U.S. state of New York (state), New York, the county seat, seat of Monroe County, New York, Monroe County, and the fourth-most populous in the state after New York City, Buffalo, New York, Buffalo, ...

. In 1847 Sellers was elected a member of the Franklin Institute, where he served as a member of the Board of Managers from 1857 to 1861 and again from 1864 to 1892, and as president from 1864 to 1867. At a meeting on September 15, 1864, he presented a uniform system of screw threads which with its angle and its flat top and bottom differed from Whitworth's British standard. Within a few years, the system had been adopted by the government workshops, leading railroad companies, prominent machine tool builders and others, under the various names of the United States, Sellers, or Franklin Institute Systems.

Positions

American Philosophical Society The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and communit ...

- elected member (1864) *Franklin Institute - elected president (1864) *

University of Pennsylvania The University of Pennsylvania (also known as Penn or UPenn) is a Private university, private research university in Philadelphia. It is the fourth-oldest institution of higher education in the United States and is ranked among the highest- ...

- elected trustee (1866) *

Fairmount Park Fairmount Park is the largest municipal park in Philadelphia and the historic name for a group of parks located throughout the city. Fairmount Park consists of two park sections named East Park and West Park, divided by the Schuylkill River, wit ...

- appointed member of the first commission (1868) *Edgemoor Iron Company - elected president (1868) *

Philadelphia, Wilmington and Baltimore Railroad The Philadelphia, Wilmington and Baltimore Railroad (PW&B) was an American railroad that operated independently from 1836 to 1881. It was formed in 1836 by the merger of four state-chartered railroads in three Middle Atlantic states to create a ...

- elected director (1868) *

Philadelphia and Reading Railroad The Reading Company ( ) was a Philadelphia-headquartered railroad that provided passenger and commercial rail transport in eastern Pennsylvania and neighboring states that operated from 1924 until its 1976 acquisition by Conrail. Commonly called ...

- director *

Centennial Exposition The Centennial International Exhibition of 1876, the first official World's Fair to be held in the United States, was held in Philadelphia, Pennsylvania, from May 10 to November 10, 1876, to celebrate the 100th anniversary of the signing of the ...

, Board of Finance - elected vice-president (1873) *William Butcher Steel Works (reorganized it as Midvale Steel Company) - president (1873–87) *

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nat ...

in Washington - elected member (1873) * Société d'encouragement pour l'industrie nationale in Paris - appointed member (1875)

Awards

Paris Exposition of 1867 The International Exposition of 1867 (french: Exposition universelle 'art et d'industriede 1867), was the List of world expositions, second world's fair to be held in Paris, from 1 April to 3 November 1867. A number of nations were represente ...

- gold medal * Vienna Exposition of 1873 - Grand Diploma of Honor and five gold medals * Paris Exposition of 1889 - Grand Prix, Chevalier de la

Légion d'honneur The National Order of the Legion of Honour (french: Ordre national de la Légion d'honneur), formerly the Royal Order of the Legion of Honour ('), is the highest French order of merit, both military and civil. Established in 1802 by Napoleon ...

References

External links

Société d’encouragement pour l’industrie nationaleInvent Now Hall of Fame Inventor Profile for William Sellers
a
ASME Celebrates its 125th Anniversary: Landmarks 2005: William Sellers at the Franklin Institute
at anniversary.asme.org

a

* {{DEFAULTSORT:Sellers, William 1824 births 1905 deaths 19th-century American inventors American steel industry businesspeople Machine tool builders Franklin Institute Members of the United States National Academy of Sciences