In the mid-1870s, a Scottish-born teacher of the deaf and a young Boston machinist worked late into the night in a workshop near Scollay Square. They were trying to improve the telegraph. What they produced instead was the telephone. Its invention, its first words and its first business were all rooted in Boston, a city whose schools, workshops and investors helped launch one of the most important technologies in history.
A Teacher Comes to Boston
Alexander Graham Bell was born in Edinburgh in 1847. His father, Alexander Melville Bell, developed a system called Visible Speech, which used symbols to represent the positions of the mouth and throat in making sounds. The younger Bell trained in his father’s methods and became deeply interested in how speech works.
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After the family moved to Canada, Bell came to Boston in 1871 to teach at a school for deaf children led by Sarah Fuller, a pioneering educator. The school later became the Horace Mann School. Bell soon opened his own school for teachers of the deaf, and in 1873 he became a professor of vocal physiology at Boston University. Teaching remained central to his life even as invention consumed more of his time.
The Harmonic Telegraph
Bell’s work on sound led him to an idea with commercial promise. Telegraph companies wanted a way to send several messages over a single wire at once. Bell imagined a “harmonic telegraph” in which messages would be sent at different musical pitches, each tuned to a different receiver.
Two Bostonians supported his experiments. Gardiner Greene Hubbard, a lawyer and businessman whose daughter Mabel was one of Bell’s students, and Thomas Sanders, a leather merchant whose deaf son Bell tutored, agreed to fund the work in exchange for shares in any resulting patents.
To build his devices, Bell turned to the electrical shop of Charles Williams Jr. at 109 Court Street, which made equipment for telegraph companies and inventors. There he met Thomas A. Watson, a skilled young machinist who became his assistant.
The Twanging Reed
On June 2, 1875, Bell and Watson were testing the harmonic telegraph in the Court Street shop. One of the metal reeds in a transmitter stuck, and when Watson plucked it to free it, Bell heard a faint twang in a receiver in another room. He realized that the sound had been carried over the wire as a continuous, varying electrical current, with all its complex qualities.
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This was the key insight. If a plucked reed could be transmitted with its overtones intact, then the human voice might be transmitted too. Bell and Watson shifted their focus to transmitting speech.
The Patent
Bell’s lawyers filed his patent application in Washington on February 14, 1876. By coincidence, the inventor Elisha Gray filed a caveat, a notice of an invention in progress, for a similar idea the same day. The question of who arrived first became the subject of lengthy legal battles. Bell’s patent, number 174,465, was granted on March 7, 1876, and it was later upheld by the courts, including the U.S. Supreme Court, against many challengers.
“Mr. Watson, Come Here”
A few days after the patent was granted, on March 10, 1876, Bell and Watson were working with a new transmitter in Bell’s rooms at 5 Exeter Place in Boston. According to Bell’s notebook, he spoke into the device the words “Mr. Watson, come here, I want to see you,” and Watson, listening at the receiver in another room, heard and understood him. It was the first successful transmission of intelligible speech by telephone.
That summer, Bell demonstrated the device at the Centennial Exhibition in Philadelphia, where it impressed judges and visitors. In October 1876, Bell and Watson held a two-way conversation over a telegraph line between Boston and Cambridgeport, several miles apart.
From Invention to Business
Turning the telephone into a business took Boston money and organization. In July 1877, Hubbard, Sanders, Bell and Watson formed the Bell Telephone Company in Boston. That same month, Bell married Mabel Hubbard. The company leased telephones in pairs rather than selling them, a model that gave it ongoing revenue and control.
The first telephones connected individual pairs of locations, such as a home and an office. Soon exchanges were developed that allowed many subscribers to connect to one another through a central switchboard. Boston became one of the first cities with telephone service.
Over the following years, the company reorganized several times. The American Bell Telephone Company, headquartered in Boston, controlled the Bell patents. In 1885 it created a subsidiary, the American Telephone and Telegraph Company, to build long-distance lines. Around the turn of the century, AT&T became the parent company, and the center of the business shifted to New York.
Bell and Watson After the Telephone
Bell eventually moved to Washington, D.C., and later spent much time at his estate in Nova Scotia, where he continued inventing and remained involved in deaf education. Watson left the telephone business, became wealthy, founded a shipyard in Quincy, Massachusetts, and later pursued interests including acting. In 1915, the two men took part in the opening of the first transcontinental telephone line, with Bell in New York and Watson in San Francisco.
Where It Happened
The Court Street workshop was demolished long ago, and the area is now part of Government Center. Historical markers and exhibits in Boston recall the work done there, and Boston University honors Bell’s time on its faculty.
A City of Inventors
The telephone grew from a Boston mix of education, skilled craftsmanship and local investment. That same combination continues to drive the city’s reinvention as each generation of inventors builds on the last.
Quick check: What was Bell originally trying to invent when he discovered the principle of the telephone?
- A phonograph
- A harmonic telegraph
- A hearing aid
Show answer
B. Bell was working on a harmonic telegraph to send several messages over one wire when the twanging reed revealed how voice could travel.