The next time you press the call button on an airplane, know this:
A Black woman built that concept in 1888.
She did not call it a call button. She called it the Gong and Signal Chair. She patented it on July 17, 1888 — U.S. Patent 386,289 — and she designed it for hotels, restaurants, steamboats, railroad trains, theaters, hospitals, and the halls of the United States Congress.
She imagined the whole world using it. She was right.
Her name was Miriam Elizabeth Benjamin. And most of the world has never heard of her.
That ends here.
Born Free in a City That Wasn’t
September 16, 1861. Charleston, South Carolina.
The Civil War is barely four months old when Miriam Elizabeth Benjamin enters the world. She is born free — and that distinction matters enormously in a city where the majority of Black people are enslaved, where the men in power have just chosen war to keep it that way, and where freedom itself is a contested, dangerous word.
Charleston had one of the most complex free Black communities in the antebellum South. Families like the Benjamins navigated tight restrictions — limited by law, watched by a hostile society — and built something anyway. Her mother, Eliza Jane Hopkins Benjamin, raised five children with a determination her youngest son Edgar would later describe as the work of “the best mother that ever lived” — a woman who fought “single-handed and alone” so her children could get a real education.
That kind of mothering does not just feed a child. It plants a direction.
Miriam was the oldest. She watched. She learned. She carried it forward.
From Charleston to Boston
In 1873, the Benjamin family moved North. Charleston to Boston. The Reconstruction-era South to New England. Twelve-year-old Miriam landed in a city with public schools that would actually let her in.
She enrolled in Girls’ High School — one of the most rigorous public secondary institutions available to young women in the country. She graduated in 1881. Then she did what educated Black women of her era did with the doors that opened: she walked through and kept building.
Her first teaching post was at the Stanton Institute in Jacksonville, Florida. A school for Black students. A segregated South still working out what freedom looked like on the ground. She showed up anyway. She taught.
Then Washington, D.C. More classrooms. More Black students. The same quiet, necessary, foundational work of building minds in rooms the broader world refused to take seriously.
But Miriam Elizabeth Benjamin was not built to stay in one room.
The Chair That Changed Everything
By 1888, she is living at 1736 New York Avenue in Washington, D.C., teaching in the city’s segregated schools — and inventing on the side.
She had noticed something. Hotels and restaurants were overstaffed for the actual demand at any given moment, while guests still had to clap, shout, or wave to get anyone’s attention. There was no dignity in it — not for the guest, and not for the staff running blind across a room trying to read who needed what.
She saw the problem. She built the solution.
The Gong and Signal Chair placed a small push-button within easy reach of the seated person. When pressed, it completed an electrical circuit — ringing a bell and simultaneously flipping a colored signal on the back of the chair, so an attendant could see precisely which seat needed attention. No shouting. No clapping. No chaos. Just a button, a signal, and service delivered with quiet efficiency.
In her own patent language, she designed it to “reduce the expenses of hotels by decreasing the number of waiters and attendants, to add to the convenience and comfort of guests and to obviate the necessity of hand clapping or calling aloud to obtain the services of pages.”
She listed the intended settings directly in the patent: dining rooms, hotels, restaurants, steamboats, railroad trains, theaters — and the hall of the Congress of the United States.
She was not thinking small.
She lobbied for the invention to be adopted by the U.S. House of Representatives as a way to summon pages. Her name and her patent were read into the Congressional Record by Black congressman and inventor George Washington Murray. Her patent model was displayed publicly at the 1895 Cotton States and International Exposition in Atlanta — in the Negro Building, which African Americans curated and built themselves to put Black achievement in front of the world.
Hotels, hospitals, and institutions adopted the principle across the following decades. And by the twentieth century, every passenger on a commercial airplane would be sitting in a descendant of what she imagined — pressing a button, triggering a signal, summoning a response.
She built the concept. The world built around it. And her name was left out of the story.
More Than One Patent — More Than One Gift
The Gong and Signal Chair was not the end of her inventive life. It was the beginning.
Researchers have documented a pinking device for dressmaking among her works — a cutting tool designed to finish seams and edges in garments, reflecting her understanding of the practical needs of women’s daily labor.
In 1917, nearly three decades after her first patent, she secured U.S. Patent 1,249,000 — a design for a shoe sole that could deliver medication or therapeutic compounds through the foot. A woman who began by solving the problem of dignity in a hotel dining room ended up solving problems in medicine and wearable care.
She also functioned as the patent attorney of record on patents belonging to her brothers — structuring, drafting, and shepherding their inventions through the legal process herself. She was not simply an inventor. She was the legal infrastructure for a family of inventors.
The Woman Who Kept Going
Teaching. Inventing. Clerking for the federal government after passing a competitive civil service examination with high marks. Attending Howard University’s medical school in 1894–1895, exploring medicine with the same curiosity that drove everything else she touched.
Then law.
Miriam Benjamin trained in the law — most likely by reading under a practicing attorney, as was standard for the era — and became a practicing patent attorney. Legal historians and the U.S. Patent and Trademark Office both credit her as a pioneering Black woman in the patent bar, possibly the first African American woman to practice patent law in the United States. The documentation is clear: she appeared as attorney of record on her brothers’ patents. That is not informal. That is professional legal work, recognized and recorded.
And then there was Samuel Lee.
Samuel J. Lee was a Black man elected to the U.S. House of Representatives from South Carolina in 1880. He won. He was never sworn in. He was never paid. The seat he had legally won was given to someone else, and he spent decades without the back pay he was owed.
Miriam Benjamin heard the story — by word of mouth, in Washington — and she acted. She tracked Samuel Lee down. She worked his case. In 1906 the Boston Globe reported that through her persistent legal effort, Lee had been awarded $10,482.80 in back salary. That is not a footnote. That is justice, delivered by a Black woman attorney who refused to let it go.
The Composer They Did Not Know Was Her
Under the pseudonym E. B. Miriam, Miriam Elizabeth Benjamin also composed.
Marches. Songs. Piano and band arrangements.
Her march “Boston Elite Quickstep” was performed by John Philip Sousa’s band — the most famous American band ensemble of the era. A composition of hers was used during Theodore Roosevelt’s 1904 presidential campaign.
A Black woman’s music carried a presidential campaign. Her name was on none of it publicly.
The pseudonym gave her access. It also gave the era permission to erase her. She used what the world offered her to get her work heard — and the world took the music and left the author behind.
That is its own kind of story. And it belongs here too.
A Family That Built Things
Miriam was not the only Benjamin who invented and practiced law.
Her brother Lyde Wilson Benjamin received a patent in 1893 for an improvement in broom-moistening devices — with Miriam listed as his attorney. Her brother Edgar Pinkerton Benjamin received a patent in 1892 for a bicycle trouser clip — and went on to become a prominent Boston attorney, philanthropist, and founder of what is now the Benjamin Healthcare Center in Roxbury, Massachusetts.
This was not coincidence. This was a household culture — built by a mother who believed her children deserved education, tended by siblings who took that belief seriously, and expressed across patents, law practices, inventions, and institutions that still carry the family’s impact today.
Miriam was the oldest. She helped set the direction. And the direction held.
The Erasure — And Why It Happened
By the time Miriam Elizabeth Benjamin died in 1947, her invention had quietly woven itself into the fabric of modern life. Call systems in hotels. Signal buttons in hospital rooms. The little glowing icon above the airplane seat. The logic she designed in 1888 had traveled into the twentieth century and made itself at home — without her name attached to any of it.
Several things worked together to push her out of the record.
The patent system of the late nineteenth century was formally race-neutral and functionally built around barriers that made it harder for Black inventors — and especially Black women inventors — to be recognized, funded, or remembered. Inventors did not have to disclose race on applications, which meant their contributions could be absorbed into the general record and their identities quietly set aside.
Her musical work lived under a pseudonym. Her legal work was attached to her brothers’ names as much as her own. Congress chose a different signaling mechanism than her exact design, allowing later generations to overlook her role as the conceptual originator of what they were using.
And she was a Black woman. In a country that has always found ways to separate Black women from credit for what they built.
Henry Baker, a Black patent examiner at the U.S. Patent Office, made it his mission in the 1890s to find and document Black inventors before history could finish erasing them. Miriam Benjamin made his list. That list — read into the Congressional Record by George Washington Murray in 1894 — is part of why her story could be recovered at all. It was an early act of Black archival self-defense. And it worked.
She was the second African American woman to receive a U.S. patent in U.S. history. Sarah E. Goode was the first, in 1885, with her folding cabinet bed. Together with Sarah Boone — whose 1892 ironing board improvement redesigned how garments were pressed — and Ellen Eglin, who developed a clothes wringer but sold her rights rather than patent under her own name for fear white consumers would reject a Black woman’s invention — these women were building the material infrastructure of everyday American life.
They were doing it without credit. Without recognition. Without their names on the history they were making.
Now we are putting the names back.
The LEGH Lens
Here is what this story carries:
Dignity is something you can design.
That is what Miriam Elizabeth Benjamin understood when she built her chair. The problem she was solving was not just logistical — how do you summon a waiter without shouting? The problem she was solving was human. How does a person communicate a need without losing their composure, their quiet, their sense of self?
She built the answer into the chair. She gave the person sitting in it the power to signal without spectacle. She designed agency into the furniture itself.
Researchers who study resilience and self-efficacy describe something called perceived control — the documented relationship between a person’s sense of agency over their own circumstances and their capacity to navigate difficulty without breaking. Miriam Benjamin built perceived control into a chair in 1888, for the guests of hotels and the patients of hospitals and the passengers of trains, before anyone had a clinical name for what she was doing.
She understood that dignity matters. That being able to say I need something — quietly, without disruption, without having to perform distress to get a response — is not a luxury. It is a foundation.
For Black women especially: she was also modeling something deeper. In a world that consistently required Black women to raise their voices, justify their needs, or go without — she invented a technology that said your signal is enough. Press the button. They will come.
That is not just engineering. That is a statement about worth.
Whatever you are navigating right now — whatever rooms were not built for you, whatever signals you have been sending that nobody seems to be receiving — Miriam Elizabeth Benjamin is the evidence that your need is real, your signal is valid, and the absence of a response says something about the room, not about you.
She built a better room.
And she did it as a Black woman in 1888, born free in a city at war, raised by a mother who refused to let her children go without education, carrying the weight of a world that was not designed to make space for her — and building anyway.
The button exists because she pressed forward.
What This Means for You
You do not need the world’s permission to build something real.
Miriam Elizabeth Benjamin did not have institutional backing. She did not have a research lab or a university grant or a development team. She had a sharp mind, a problem she could see clearly, and the discipline to build a solution and walk it through the patent system herself.
She taught school while she invented. She passed civil service exams while she explored medicine. She trained in law while she composed music under a name the world did not know was hers. She practiced patent law for others while still developing her own ideas. She tracked down a disenfranchised Black politician and worked his case until the government paid what it owed.
She did not wait for one lane to open before she moved in another.
Whatever you are building — whatever corner of the world you are trying to make better, quieter, more dignified, more fair — look at what she did with the tools she had.
She designed her signal.
She sent it clearly.
And the world — whether it knew her name or not — has been responding ever since.
If You Need Support Right Now
You are not alone.
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