In her time, she was called "the most famous woman inventor,” but today, chances are, you’ve never even heard of Margaret Eloise Knight. It’s unfortunate, because If you do any grocery shopping, you have her to thank for making it so much easier. Her invention created a product that is as unassuming as it is ubiquitous.

A self-taught engineer, Margaret Knight invented the machine to produce flat-bottomed paper bags, and then founded the Eastern Paper Bag Company in 1870, creating paper bags for groceries very similar to the ones used today.

During her lifetime, as a woman-inventor during the late 19th and early 20th Centuries, she overcame a surprising amount of adversity to achieve both her goals and the recognition she deserved—at a time when few women held intellectual property. Here is her story…

Early Years and Early Inventions

Margaret E. Knight was born in York, Maine on February 14, 1838 to Hannah Teal and James Knight. After her father died, “Mattie,” as her parents nickna...

American inventor, metallurgist, automotive pioneer, entrepreneur and industrialist, Elwood Haynes developed and built one of the first automobiles. For anyone, that would be more than enough for a lifetime achievement—but he was responsible for so many more invaluable contributions that endure to this day.

Haynes was born on October 14, 1857, in Portland, Indiana, the fifth of ten children of Jacob M. Haynes and Hilinda S. Haines Haynes. His family was of English descent.

Both of Haynes' parents were dedicated Presbyterians and outspoken prohibitionists and educated their children from a young age to avoid liquor. His mother was the founder of a local Women's Temperance Movement Union. His paternal grandfather Henry Haynes was a gunsmith and mechanic, and tutored Haynes about metallurgy. In 1866, the family moved from their two-room house in Portland into the countryside outside of town where they purchased a larger home to better accommodate their growing number of children.

A...

On This Day, April 9, 1940, the patent for the first shopping cart is granted to its inventor Sylvan Goldman, the owner of a Humpty Dumpty Grocery store in Oklahoma City. It was essentially a folding chair with wheels and baskets attached. The carts were initially a flop, as shoppers were reluctant to use them--men found them effeminate and women thought them too much like a baby carriage - so he hired models to shop with them.

Eventually, folding carts became very popular and Goldman became a multimillionaire by collecting a royalty on every folding design shopping cart in the United States.

By any measure, Goldman was an innovator. In addition to his invention of the shopping cart, early in his career as a grocer he developed many of the advertising and marketing techniques now commonly used by supermarkets.

He once said his idea for the shopping cart came from watching women carrying baskets. ''They had a tendency to stop shopping when the baskets became too full or too heavy,'...

On This Day, April 7, 1927, Herbert Eugene Ives of Bell Laboratories and the inventor of long-distance television transmission, broadcasts a picture from Washington D.C. to New York, a distance of about 200 miles over telephone lines.

It was a speech by then U.S. Secretary of Commerce and future U.S. President Herbert Hoover announcing, "Today we have, in a sense, the transmission of sight for the first time in the world's history. Human genius has now destroyed the impediment of distance in a new respect, and in a manner hitherto unknown."

Ives was born on July 31, 1882 in Philadelphia to Frederic Eugene Ives and Mary Olmstead. He studied at the University of Pennsylvania.

Just like his father, Herbert Ives became an expert in color photography. His main point of interest was aerial photography. He was also an avid coin collector.

In 1903, Ives patented the technique for the "Changeable Sign", which showed different pictures from different angles.

He continued his studies at ...

On this Day, March 15, 1892, the escalator is patented, by American inventor Jesse Wilford Reno. The idea for his "inclined elevator" was originally part of his proposal to build an underground New York City subway. The subway proposal was rejected, but the inclined elevator caught on. It included a rubber-coated moving handrail and a comb of projected fingers on the ends to help prevent feet from getting caught in the mechanism. The first one was demonstrated at Coney Island, New York, and transported some 75,000 people during its two-week stay there. It was then moved to the Manhattan entrance of the Brooklyn Bridge.

In researching the life of Jesse Wilford Reno it quickly becomes apparent that not much is really published about him—and what is out there is scattered and disparate.

Here’s what we’ve been able to compile about what we do know about Jesse Reno...

Jesse W. Reno was born on August 4, 1861 in Fort Leavenworth, Kansas. He was the son of American Civil War notable Majo...