19 Things You Might Not Know Were Invented by Women

iStock
iStock

Necessity isn't the only mother of invention. Though it wasn't always easy to get patents or the credit they deserved, women are responsible for many items we use today.

1. THE PAPER BAG

paper bag with groceries
iStock

America got a brand new paper bag when cotton mill worker Margaret Knight invented a machine to make them with a flat square bottom in 1868. (Paper bags originally looked more like envelopes.) A man named Charles Annan saw her design and tried to patent the idea first. Knight filed a lawsuit and won the patent fair and square in 1871.

2. KEVLAR

Kevlar material
iStock

Lightweight, high-tensile Kevlar—five times stronger than steel—will take a bullet for you. DuPont chemist Stephanie Kwolek accidentally invented it while trying to perfect a lighter fiber for car tires and earned a patent in 1966.

3. THE FOOT-PEDAL TRASH CAN

foot-pedal trash can
iStock

Lillian Gilbreth improved existing inventions with small, but ingenious, tweaks. In the early 1900s, she designed the shelves inside refrigerator doors, made the can opener easier to use, and tidied up cleaning with a foot pedal trash can. Gilbreth is most famous for her pioneering work in efficiency management and ergonomics with her husband, Frank. Two of their 12 children, Frank Jr. and Ernestine Gilbreth, humorously wrote about their home/work collaborations in the book Cheaper by the Dozen.

4. MONOPOLY

Monopoly game
iStock

Elizabeth Magie created The Landlord's Game to spread the economic theory of Georgism—teaching players about the unfairness of land-grabbing, the disadvantages of renting, and the need for a single land value tax on owners. Fun stuff! Magie patented the board game in 1904 and self-published it in 1906. Nearly 30 years later, a man named Charles Darrow rejiggered the board design and message and sold it to Parker Brothers as Monopoly. The company bought Magie's patent for the original game for $500 and no royalties.

5. WINDSHIELD WIPERS

windshield wipers on red car
iStock

Drivers were skeptical when Mary Anderson invented the first manual windshield wipers in 1903. They thought it was safer to drive with rain and snow obscuring the road than to pull a lever to clear it. (Another woman inventor, Charlotte Bridgwood, invented an automatic version with an electric roller in 1917. It didn't take off, either.) But by the time Anderson's patent expired in 1920, windshield wipers were cleaning up. Cadillac was the first to include them in every car model, and other companies soon followed.

6. DISPOSABLE DIAPERS

disposable diaper
iStock

Marion Donovan didn't take all the mess out of diaper changing when she patented the waterproof "Boater" in 1951. But she changed parenting—and well, babies—forever. The waterproof diaper cover, originally made with a shower curtain, was first sold at Saks Fifth Avenue. Donovan sold the patent to the Keko Corporation for $1 million and then created an entirely disposable model a few years later. Pampers was born in 1961.

7. THE DISHWASHER

dishwasher
iStock

Patented in 1886, the first dishwasher combined high water pressure, a wheel, a boiler, and a wire rack like the ones still used for dish drying. Inventor Josephine Cochrane never used it herself, but it made life easier for her servants.

8. LIQUID PAPER

liquid paper
iStock

In the days before the delete key, secretary Bette Nesmith Graham secretly used white tempera paint to cover up her typing errors. She spent years perfecting the formula in her kitchen before patenting Liquid Paper in 1958. Gillette bought her company in 1979 for $47.5 million. And that's no typo.

9. ALPHABET BLOCKS

Alphabet blocks
iStock

Children don't read books by anti-suffrage author Adeline D.T. Whitney these days—and that's probably for the better. But the wooden blocks she patented in 1882 still help them learn their ABCs.

10. THE APGAR SCORE

Nurse holding newborn
iStock

Life is a series of tests, starting with the Apgar, named after obstetrical anesthesiologist Dr. Virginia Apgar. In 1952, she began testing newborns one minute and five minutes after birth to determine if they needed immediate care. About 10 years later, the medical community made a backronym—an acronym designed to fit an existing word—to remember the criteria scored: Appearance, Pulse, Grimace, Activity, and Respiration.

11. MARINE SIGNAL FLARES

marine signal flares
iStock

Communication between ships was once limited to colored flags, lanterns, and screaming things like "Thar she blows!" really loudly. Martha Coston didn't come up with the idea for signal flares all by herself. She found plans in a notebook that belonged to her late husband. The determined widow spent 10 years working with chemists and pyrotechnics experts to make the idea a reality. But she was only named administratrix in the 1859 patent—Mr. Coston got credited as the inventor.

12. THE CIRCULAR SAW

circular saw
iStock

A weaver named Tabitha Babbitt was the first to suggest that lumber workers use a circular saw instead of the two-man pit saw that only cut when pulled forward. She made a prototype and attached it to her spinning wheel in 1813. Babbitt's Shaker community didn't approve of filing a patent, but they took full advantage of the invention.

13. RETRACTABLE DOG LEASH

Dog on leash
iStock

New York City dog owner Mary A. Delaney patented the first retractable leading device in 1908. It attached to the collar, keeping pooches under control, while giving them some freedom to roam. Incidentally, someone named R.C. O'Connor patented the first child harness 11 years later. Coincidence? Maybe.

14. SUBMARINE TELESCOPE AND LAMP

telescope
iStock

It's difficult to find any in-depth information about early inventor Sarah Mather. Her combination telescope and lamp for submarines, patented in 1845, speaks for itself.

15. FOLDING CABINET BED

folding bed
iStock

Sarah E. Goode's folding cabinet bed didn't just maximize space in small homes. In 1885, it made her the first African-American woman with a U.S. patent. The fully functional desk could be used by day and then folded down for a good night's sleep. The Murphy bed came along some 15 years later.

16. THE SOLAR HOUSE

solar panels
iStock

Biophysicist Maria Telkes's place was in the house—the very first 100 percent solar house. In 1947, the Hungarian scientist invented the thermoelectric power generator to provide heat for Dover House, a wedge-shaped structure she conceived with architect Eleanor Raymond. Telkes used Glauber's salt, the sodium salt of sulfuric acid, to store heat in preparation for sunless days. Dover House survived nearly three Massachusetts winters before the system failed.

17. SCOTCHGARD

spaghetti spilled on floor
iStock

Apparently, it takes a stain to fight one. In 1952, 3M chemist Patsy Sherman was perplexed when some fluorochemical rubber spilled on a lab assistant's shoe and wouldn't come off. Without changing the color of the shoe, the stain repelled water, oil, and other liquids. Sherman and her co-inventor Samuel Smith called it Scotchgard. And the rest is ... preserving your couch.

18. INVISIBLE GLASS

camera lens
iStock

Katharine Blodgett, General Electric's first female scientist, discovered a way to transfer thin monomolecular coatings to glass and metals in 1935. The result: glass that eliminated glare and distortion, which revolutionized cameras, microscopes, eyeglasses, and more.

19. COMPUTERS

old computer
iStock

Women in computer science have a role model in Grace Hopper. She and Howard Aiken designed Harvard's Mark I computer, a five-ton, room-sized machine in 1944. Hopper invented the compiler that translated written language into computer code and coined the terms "bug" and "debugging" when she had to remove moths from the device. In 1959, Hopper was part of the team that developed COBOL, one of the first modern programming languages.

Amazon's Best Black Friday Deals: Tech, Video Games, Kitchen Appliances, Clothing, and More

Amazon
Amazon

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Black Friday is finally here, and Amazon is offering great deals on kitchen appliances, tech, video games, and plenty more. We will keep updating this page as sales come in, but for now, here are the best Amazon Black Friday sales to check out.

Kitchen

Instant Pot/Amazon

- Instant Pot Duo Plus 9-in-115 Quart Electric Pressure Cooker; $90 (save $40)

- Keurig K-Cafe Special Edition; $190 (save $30)

- Ninja OS301 Foodi 10-in-1 Pressure Cooker and Air Fryer; $125 (save $75)

- Nespresso Vertuo Next Coffee and Espresso Machine by Breville; $120 (save $60)

- KitchenAid KSMSFTA Sifter with Scale Attachment; $95 (save $75)

- Keurig K-Mini Coffee Maker; $60 (save $20)

- Cuisinart Bread Maker; $80 (save $97)

- Anova Culinary Sous Vide Precision Cooker; $139 (save $60)

- Aicook Juicer Machine; $35 (save $15)

- JoyJolt Double Wall Insulated Espresso Mugs - Set of Two; $14 (save $10)

- Longzon Silicone Stretch Lids - Set of 14; $16 (save $11)

- HadinEEon Milk Frother; $37 (save $33)

Home Appliances

Roomba/Amazon

- iRobot Roomba 675 Robot Vacuum with Wi-Fi Connectivity; $179 (save $101)

- ASAKUKI 500ml Premium Essential Oil Diffuser; $22 (save $4)

- Facebook Portal Smart Video Calling 10 inch Touch Screen Display with Alexa; $129 (save $50)

- Bissell air320 Smart Air Purifier with HEPA and Carbon Filters; $280 (save $50)

- Oscillating Quiet Cooling Fan Tower; $59 (save $31)

- TaoTronics PTC 1500W Fast Quiet Heating Ceramic Tower; $55 (save $10)

- Vitamix 068051 FoodCycler 2 Liter Capacity; $300 (save $100)

- Ring Video Doorbell; $70 (save $30)

Video games

Sony

- Marvel's Spider-Man: Game of The Year Edition for PlayStation 4; $20 (save $20)

- The Legend of Zelda: Link's Awakening; $40 (save $20)

- Hyrule Warriors: Age of Calamity; $50 (save $10)

- Marvel's Avengers; $25 (save $33)

- The Last of Us Part II for PlayStation 4; $30 (save $30)

- LEGO Harry Potter: Collection; $15 (save $15)

- Ghost of Tsushima; $40 (save $20)

- BioShock: The Collection; $20 (save $30)

- The Sims 4; $24 (save $20)

- God of Warfor PlayStation 4; $10 (save $10)

- Days Gonefor PlayStation 4; $20 (save $6)

- Luigi's Mansion 3 for Nintendo Switch; $40 (save $20)

Computers and tablets

Microsoft/Amazon

- New Apple MacBook Pro 16 inches with 512 GB; $2149 (save $250)

- Microsoft Surface Laptop 3 with 13.5 inch Touch-Screen; $1200 (save $400)

- Lenovo ThinkPad T490 Laptop; $889 (save $111)

- Amazon Fire HD 10 Tablet (64GB); $120 (save $70)

- Amazon Fire HD 10 Kids Edition Tablet (32 GB); $130 (save $70)

- Apple iPad Mini (64 GB); $335 (save $64)

- Vankyo MatrixPad S2 Tablet; $120 (save $10)

Tech, gadgets, and TVs

Apple/Amazon

- Apple Watch Series 3 with GPS; $120 (save $79)

- Seneo Wireless Charger, 3 in 1 Wireless Charging Station; $16 (save $10)

- SAMSUNG 75-inch Class Crystal 4K Smart TV; $998 (save $200)

- Nixplay 2K Smart Digital Picture Frame 9.7 Inch Silver; $238 (save $92)

- All-New Amazon Echo Dot with Clock and Alexa (4th Gen); $39 (save $21)

- MACTREM LED Ring Light 6" with Tripod Stand; $16 (save $3)

- Amazon Fire TV Stick with Alexa Voice Remote; $28 (save $12)

- DR. J Professional HI-04 Mini Projector; $93 (save $37)

Headphones and speakers

Beats/Amazon

- Beats Solo3 Wireless On-Ear Headphones; $120 (Save $80)

- Apple AirPods Pro; $169 (save $50)

- Anker Soundcore Upgraded Bluetooth Speaker; $22 (save $8)

- Powerbeats Pro Wireless Earphones; $175 (save $75)

- JBL Boombox; $280 (save $120)

Movies and TV

HBO/Amazon

- Game of Thrones: The Complete Series; $115 (save $89)

- Jurassic World 5-Movie Set; $23 (save $37)

- Deadwood: The Complete Series; $42 (save $28)

- Back to the Future Trilogy; $15 (save $21)

Toys and Games

Amazon

- Awkward Family Photos Greatest Hits; $15 (save $10)

- Exploding Kittens Card Game; $10 (save $10)

- Cards Against Humanity: Hidden Gems Bundle; $14 (save $5)

- LOL Surprise OMG Remix Pop B.B. Fashion Doll; $29 (save $6)

- LEGO Ideas Ship in a Bottle 92177 Expert Building Kit; $56 (save $14)

Furniture

Casper/Amazon

- Casper Sleep Element Queen Mattress; $476 (save $119)

- ZINUS Alexis Deluxe Wood Platform Bed Frame; $135 (save $24)

- ROMOON Dresser Organizer with 5 Drawers; $59 (save $11) 

- AmazonBasics Room Darkening Blackout Window Curtains; $26 (save $5)

- Writing Desk by Caffoz; $119 (save $21)

- SPACE Seating Office Support Managers Chair; $112 (save $116)

- Rivet Globe Stick Table Lamp; $53 (save $17)

- Christopher Knight Home Merel Mid-Century Modern Club Chair; $188 (save $10)

- Walker Edison Furniture Industrial Rectangular Coffee Table; $121 (save $48)

Beauty

Haus/Amazon

- MySmile Teeth Whitening Kit with LED Light; $21 (save $12) 

- Cliganic USDA Organic Lip Balms Set of Six; $6 (save $4)

- HAUS LABORATORIES By Lady Gaga: LE RIOT LIP GLOSS; $7 (save $11)

- Native Deodorant for Men and Women Set of Three; $25 (save $11) 

- BAIMEI Rose Quartz Jade Roller & Gua Sha; $14 (save $3)

- Honest Beauty Clearing Night Serum with Pure Retinol and Salicylic Acid; $20 (save $8)

- WOW Apple Cider Vinegar Shampoo and Hair Conditioner Set; $30 (save $5) 

- La Roche-Posay Effaclar Purifying Foaming Gel Cleanser; $15 (save $5)

- wet n wild Bretman Rock Shadow Palette; $9 (save $6)

- EltaMD UV Daily Tinted Face Sunscreen Moisturizer with Hyaluronic Acid; $25 (save $6)

Clothes

Ganni/Amazon

- Ganni Women's Crispy Jacquard Dress; $200 (save $86) 

- The Drop Women's Maya Silky Slip Skirt; $36 (save $9)

- Steve Madden Women's Editor Boot; $80 (save $30)

- adidas Women's Roguera Cross Trainer; $40 (save $25)

- Line & Dot Women's Elizabeth Sweater; $74 (save $18)

- Levi's Men's Sherpa Trucker Jacket; $57 (save $41)

- Adidas Men's Essentials 3-Stripes Tapered Training Joggers Sweatpants; $28 (save $12)

- Timex Men's Weekender XL 43mm Watch; $32 (save $20)

- Ray-Ban Unisex-Adult Hexagonal Flat Lenses Sunglasses; $108 (save $46) 

- Reebok Men's Flashfilm Train Cross Trainer; $64 (save $16)

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!

10 Little Facts About Louisa May Alcott

Public Domain, Wikimedia Commons
Public Domain, Wikimedia Commons

Born on November 29, 1832, Louisa May Alcott led a fascinating life. Besides enchanting millions of readers with her novel Little Women, she worked as a Civil War nurse, fought against slavery, and registered women to vote. Here are 10 facts about the celebrated author.

1. Louisa May Alcott had many famous friends.

Louisa's parents, Bronson and Abigail Alcott, raised their four daughters in a politically active household in Massachusetts. As a child, Alcott briefly lived with her family in a failed Transcendentalist commune, helped her parents hide slaves who had escaped via the Underground Railroad, and had discussions about women’s rights with Margaret Fuller.

Throughout her life, she socialized with her father’s friends, including Henry David Thoreau, Ralph Waldo Emerson, and Nathaniel Hawthorne. Although her family was always poor, Alcott had access to valuable learning experiences. She read books in Emerson’s library and learned about botany at Walden Pond with Thoreau, later writing a poem called "Thoreau’s Flute" for her friend. She also socialized with abolitionist Frederick Douglass and women’s suffrage activist Julia Ward Howe.

2. Louisa May Alcott's first nom de plume was Flora Fairfield.

As a teenager, Alcott worked a variety of teaching and servant jobs to earn money for her family. She first became a published writer at 19 years old, when a women’s magazine printed one of her poems. For reasons that are unclear, Alcott used a pen name—Flora Fairfield—rather than her real name, perhaps because she felt that she was still developing as a writer. But in 1854 at age 22, Alcott used her own name for the first time. She published Flower Fables, a collection of fairy tales she had written six years earlier for Emerson’s daughter, Ellen.

3. Louisa May Alcott secretly wrote pulp fiction.

Before writing Little Women, Alcott wrote Gothic pulp fiction under the nom de plume A.M. Barnard. Continuing her amusing penchant for alliteration, she wrote books and plays called Perilous Play and Pauline’s Passion and Punishment to make easy money. These sensational, melodramatic works are strikingly different than the more wholesome, righteous vibe she captured in Little Women, and she didn’t advertise her former writing as her own after Little Women became popular.

4. Louisa May Alcott wrote about her experience as a Civil War nurse.

In 1861, at the beginning of the U.S. Civil War, Alcott sewed Union uniforms in Concord and, the next year, enlisted as an army nurse. In a Washington, D.C. hotel-turned-hospital, she comforted dying soldiers and helped doctors perform amputations. During this time, she wrote about her experiences in her journal and in letters to her family. In 1863, she published Hospital Sketches, a fictionalized account, based on her letters, of her stressful yet meaningful experiences as a wartime nurse. The book became massively popular and was reprinted in 1869 with more material.

5. Louisa May Alcott suffered from mercury poisoning.

After a month and a half of nursing in D.C., Alcott caught typhoid fever and pneumonia. She received the standard treatment at the time—a toxic mercury compound called calomel. (Calomel was used in medicines through the 19th century.) Because of this exposure to mercury, Alcott suffered from symptoms of mercury poisoning for the rest of her life. She had a weakened immune system, vertigo, and had episodes of hallucinations. To combat the pain caused by the mercury poisoning (as well as a possible autoimmune disorder, such as lupus, that could have been triggered by it), she took opium. Alcott died of a stroke in 1888, at 55 years old.

6. Louisa May Alcott wrote Little Women to help her father.

In 1867, Thomas Niles, an editor at a publishing house, asked Alcott if she wanted to write a novel for girls. Although she tried to get excited about the project, she thought she wouldn’t have much to write about girls because she was a tomboy. The next year, Alcott’s father was trying to convince Niles to publish his manuscript about philosophy. He told Niles that his daughter could write a book of fairy stories, but Niles still wanted a novel about girls. Niles told Alcott’s father that if he could get his daughter to write a (non-fairy) novel for girls, he would publish his philosophy manuscript. So to make her father happy and help his writing career, Alcott wrote about her adolescence growing up with her three sisters. Published in September 1868, the first part of Little Women was a huge success. The second part was published in 1869, and Alcott went on to write sequels such as Little Men (1871) and Jo’s Boys (1886).

7. Louisa May Alcott was an early suffragette.

In the 1870s, Alcott wrote for a women’s rights periodical and went door-to-door in Massachusetts to encourage women to vote. In 1879, the state passed a law that would allow women to vote in local elections on anything involving education and children—Alcott registered immediately, becoming the first woman registered in Concord to vote. Although met with resistance, she, along with 19 other women, cast ballots in an 1880 town meeting. The Nineteenth Amendment was finally ratified in 1920, decades after Alcott died.

8. Louisa May Alcott pretended to be her own servant to trick her fans.

After the success of Little Women, fans who connected with the book traveled to Concord to see where Alcott grew up. One month, Alcott had a hundred strangers knock on the door of Orchard House, her family’s home, hoping to see her. Because she didn’t like the attention, she sometimes pretended to be a servant when she answered the front door, hoping to trick fans into leaving.

9. Louisa May Alcott never had children, but she cared for her niece.

Although Alcott never married or had biological children, she took care of her orphaned niece. In 1879, Alcott’s youngest sister May died a month after giving birth to her daughter. As she was dying, May told her husband to send the baby, whom she had named Louisa in honor of Alcott, to her older sister. Nicknamed Lulu, the girl spent her childhood with Alcott, who wrote her stories and seemed a good fit for her high-spiritedness. Lulu was just 8 when Alcott died, at which point she went to live with her father in Switzerland.

10. Fans can visit Louisa May Alcott's home in Concord, Massachusetts.

At 399 Lexington Road in Concord, Massachusetts, tourists can visit Orchard House, the Alcott family home from 1858 to 1877. Orchard House is a designated National Historic Landmark, and visitors can take a guided tour to see where Alcott wrote and set Little Women . Visitors can also get a look at Alcott’s writing desk and the family’s original furniture and paintings.