Margaret E. Knight was born in York, Maine on February 14, 1838 to Hannah Teal and James Knight. After her father passed away, “Mattie,” as her parents nicknamed her, moved to Manchester, New Hampshire and was raised by her widowed mother. Any formal education she had was limited to secondary school but that did not stop her from creating a clever device at a young age. As a little girl, Knight preferred to play with woodworking tools instead of dolls, stating that “the only things [she] wanted were a jack knife, a gimlet, and pieces of wood.” Although her friends were horrified, her deep interest in tools and making different mechanical things for her brother like kites and sleds led to her first invention at the age of 12.

Like many people during the industrial era in the US, Knight’s brothers worked at a local cotton textile mill and when visiting one day, she saw a loom malfunction and its shuttle hit a worker. She then decided to create a device that restrained shuttles from falling out of the looms by turning off the entire machine when something went wrong. It was of the first innovations to touch a range of industries. Knight worked at the cotton textile mills as well until her late teens and then throughout her 20s and 30s worked short-term jobs like home repairs, upholstery, daguerreotype, photography, and ambrotype.

After the civil war as an adult in 1867, she went to work at the Columbia Paper Bag Company located in Springfield, Massachusetts. She noticed that the paper bags they used were weak and narrow; thus, she sought to make them better by inventing a machine that improved the way that they were made. In 1871 she tried to get her first patent for the device but Charles F. Annan took her idea and petitioned a similar patent. After fighting for days and spending hundreds of dollars, she was awarded the patent at the age of 32. She actually received 87 patents throughout her career, 27 being for well-known inventions. She ended up living a life of creation after creation, inventing close to 100 new things like shoe cutting devices, a rotary engine, and a dress and skirt shield. She founded the Eastern Paper Bag Company in Hartford, Connecticut in addition to her other works.

Knight lived until the age of 76 in Framingham, Massachusetts where she never stopped coming up with new ways to solve problems. Described as a “woman Edison” through an obituary, Knight passed away on October 12, 1914. Today she is recognized as the “first woman awarded a US patent” and one who truly “transgressed traditional gender roles” by pursuing her passions and making a difference.

Knight was born on February 14, 1838, in York, Maine to James Knight and Hannah Teal. After her father died when she was young, Knight's family moved to Manchester, New Hampshire. She received a basic education, but left school with her siblings to work at a cotton mill. At the age of 12, Knight witnessed an accident at the mill where a worker was stabbed by a steel-tipped shuttle that shot out of a mechanical loom. Within weeks, she invented a safety device for the loom that was later adopted by other Manchester mills. The device was never patented and the exact nature of it is unknown, though it may have been either a device to stop the loom when the shuttle thread broke or a guard to physically block a flying shuttle.[3] Health problems precluded Knight from continuing to work at the cotton mill. In her teens and early 20s she held several jobs, including home repair, photography, and engraving.[3]

Knight moved to Springfield, Massachusetts in 1867 and was hired by the Columbia Paper Bag Company.[3] In 1868, Knight invented a machine that folded and glued paper to form the flat-bottomed brown paper bags familiar to shoppers today. Knight built a wooden model of the device, but needed a working iron model to apply for a patent. Charles Annan, who was in the machine shop where Knight's iron model was being built, stole her design and patented the device. Knight filed a successful patent interference lawsuit and was awarded the patent in 1871.[4] With a Massachusetts business partner, Knight established the Eastern Paper Bag Co. and received royalties.

Her many other inventions included lid removing pliers, a numbering machine, a window frame and sash, patented in 1894, and several devices relating to rotary engines, patented between 1902 and 1915.[5]

Knight never married and died on October 12, 1914, at the age of 76.

A plaque recognizing her as the "first woman awarded a U.S. patent" and holder of 87 U.S. patents hangs on the Curry Cottage at 287 Hollis St in Framingham. However, Knight was not actually the first: either Mary Kies or Hannah Slater has that honor.[6][7][8][9]

Knight was inducted into the National Inventors Hall of Fame in 2006.[1] A scaled-down but fully functional patent model of her original bag-making machine is in the Smithsonian Museum in Washington, D.C.[10]

Knight was a women who successfully patented many of her very inventions, however it wasn't done with ease or without obstacles. It was well known that Knight had not received credit for her work as a young teenager when she was still working at the cotton mill and that she was not allowed to patent her very own design.[11] She overcame a surprising amount of adversities considering the fact that she was a woman inventor in the late 1800's to the early 1900's.

Even though she overcame many barriers in the life of women in the 1800's and was deemed 'successful', she was never able to profit from her inventions due to her sex.[12] Another reason Knight was dismissed so often was because she wasn't a wealthy or highly educated woman.[13] Due to the time Knight was alive she also faced the disadvantage of making much less money than men due to the hierarchy of sex. Most women during that time period were paid half or even less than what the average man was making in the workforce.[14] Knight was aware of that type of limitation among many more, however sex was a special obstacle, she is quoted to have supposedly said;

I’m only sorry I couldn’t have had as good a chance as a boy...

— MIT, Margaret Knight, https://lemelson.mit.edu/resources/margaret-knight

The unfairness in pay was also due to there having been an economic boom with industrialization, meaning that most women who weren't homemakers and men who lacked higher paying and successful jobs turned to working in factories.[15] Thus making it more difficult for women to synonymously pay for their basic needs and trying to receive education.  

The flat-bottomed paper bag addresses the pain point that not only many people dealt with, but that she personally had difficulties with. The problem was that the paper bags that previously existed and that she had to constantly make, were narrow, weak, and envelope-shaped bags. It made packing things very difficult because the base was not sturdy enough due to the shape. Thus, Knight believed that a flat square-bottomed shaped bags would be sturdier and hold things better, due to their ability to stand making them more practical. The machine itself enabled her to mass manufacture these bags as well, solving the issue of impractically building bags by hand.

Today, almost all of Knight’s inventions are currently used or have been developed into something more advanced. Her most famous invention of flat-bottomed paper bags are used all over the world in supermarkets and for other purposes as well. It is hard to imagine a time without such an invention and we all have her to thank for changing the way we do things today in so many ways. Her self-taught skills and interest in machines have made her one of the greatest American inventors of all time.

• 
  Improvement in paper feeding machines, 1870
• 
  Improvement in paper-bag machine, 1879
• 
  Sole cutting machine, 1890
• 
  Sole cutting machine, 1893
• 
  Reel, 1894
• 
  Numbering mechanism, 1894
• 
  Window frame with sash, 1894
• 
  Compound rotary engine, 1902
• 
  Rotary engine, 1902
• 
  Rotary engine, 1902
• 
  Automatic tool for boring or planing concave or cylindroidal surfaces, 1903
• 
  Internal combustion engine, 1913

• Emily Arnold McCully: Marvelous Mattie: How Margaret E. Knight Became an Inventor. Farrar, Straus and Giroux, 2006. 32pp. ISBN 0-374-34810-3. (Children's book which was recognized as one of the "best feminist books for young readers, 2007," awarded by the Amelia Bloomer Project of the Feminist Task Force of the American Library Association.)
• DiMeo, Nate. no. 116,842 The Memory Palace Podcast Episode 78, November 5, 2015. (Podcast detailing Margaret Knight, her early life and inventions.)
• Marilyn Bailey Ogilvie: Women in science: antiquity through the nineteenth century: a biographical dictionary with annotated bibliography. 3rd ed. MIT Press, Cambridge, MA 1991, ISBN 0-262-65038-X, p. 110 f.
• Sam Maggs: Wonder Women: 25 Innovators, Inventors, and Trailblazers who Changed History, published by Quirk Books on October 24, 2016, distributed by Penguin House. (A section detailing Knight's most notable inventions and her life.)

• Continental Paper Bag Co. v. Eastern Paper Bag Co.
• Francis Wolle

https://www.anb.org/view/10.1093/anb/9780198606697.001.0001/anb-9780198606697-e-1301960;jsessionid=2D09E9E2D8E421880A1D08F60D5B8A61# Famous Women Innovators. (2008). Margaret Knight Invention of the Paper Bag Machine. Retrieved from Famous Women Innovators: http://www.women-inventors.com/Margaret-Knight.asp Moncrief-Mullane, H. M. (2019, Dec 19). Margaret E. Knight. Retrieved from Encyclopedia.com: https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/margaret-e-knight National Inventors Hall of Fame. (2020). Margaret E. Knight. Retrieved from National Inventors Hall of Fame: https://www.invent.org/inductees/margaret-e-knight

• Margaret Knight, Invention of the Paper Bag Machine
• Patents held by Margaret E. Knight