The Telephone in America: Bell Telephone System

From Bell to Bell System

This model of Bell’s first telephone is a duplicate of the instrument through which speech sounds were first transmitted electronically, 1875.

The telephone we use today is very different in design from the first instrument invented by Alexander Graham Bell, but it works on the same principle. As soon as Bell proved his invention practical, he foresaw it could link homes with offices, sweep aside the isolation of farms, and bind together cities and nations with electrically transmitted speech.

Alexander Graham Bell had prepared himself to follow the professional footsteps of his father and grandfather in the teaching of proper articulation and the correction of speech defects. He became a teacher of speech to the deaf. Early in his training, his investigations into the nature of sound led him to study electricity. It was out of this work, together with his understanding of the organs of speech and hearing, that his invention grew.

He attempted to apply sound to telegraphy in a device called the harmonic telegraph. He hoped it would transmit several Morse messages tuned at differing levels over the same circuit simultaneously. While he was working with this device, Bell conceived the principle of the telephone.

He told his young mechanical assistant, Thomas A. Watson: “If I can get a mechanism which will make a current of electricity vary in intensity as the air varies in density when a sound is passing through it, I can telegraph any sound, even the sound of speech.”

The twang of a reed

This idea was clear in Bell’s mind by the summer of 1871, but he did not then know how to reduce it to practice. On June 2, 1875, he succeeded in doing so. In adjoining attic rooms at 109 Court Street, Boston, he and Watson were trying out several pairs of harmonic telegraph instruments each consisting of an electromagnet with a steel organ reed vibrating over it. One reed stuck. Watson plucked it with his finger to start it again, but it did not come free, so Bell heard an unusual sound. Instead of hearing a series of electric pulsations, he recognized the twang of a vibrating reed! He knew then that, as Watson has put it, “he was hearing, for the first time in human history, the tones and overtones of a sound transmitted by electricity.” That afternoon Bell directed Watson to make the instrument that was to be the first Bell telephone. This instrument transmitted voice tones, but not until March 10, 1876, did Bell succeed in transmitting an intelligible sentence of speech.

The telephone talks

On the evening of that day, as the young inventor prepared a crude experimental transmitter to try to send his voice over a wire to a room down the hall where Watson was listening, he upset the acid of a battery. It spilled over his clothes. Impulsively, Bell called out, “Mr. Watson, come here: I want you!” An instant later Watson burst into the room shouting “Mr. Bell, I heard every word you said—distinctly!”

Bell exhibited and demonstrated his telephone at the Philadelphia Centennial in June, 1876, where it won the enthusiastic approval of leaders in the scientific world. But the general public showed little interest. The young inventor had no financial backing other than that of Thomas Sanders and Gardiner C. Hubbard. In the fall of 1871 these men had agreed to supply funds for Bell’s telegraph experiments in return for a share in whatever patent rights might result from his experiments. His telephone patents were later included in this agreement.

Bell’s first telephone patent had been granted on March 7, 1876, but was earning no return. Sanders and Hubbard had advanced all they could. In order to eke out his small personal income as a teacher, and to provide funds for further experimentation, Bell began, early in 1877, to give lectures at which he demonstrated the telephone. These were well attended, and accounts of them were widely published. A few forward-looking people began to realize the usefulness of the telephone. In May, 1877, the first telephones were put into use on a commercial basis. Soon people throughout the country began to inquire about how to get into the telephone business.

How the Bell System was formed

The commercial development of the telephone had begun and the time had come for a more definite organization than the rather informal arrangement that had been made between Bell, Sanders and Hubbard, into which Watson had by this time been admitted.

This took the form of a trusteeship, instituted in July, 1877, by these four owners of the patents. Hubbard was trustee and virtual executive head of the enterprise. It was he who introduced the policy of leasing instruments instead of selling them and who introduced the system of licenses to authorized agents or licensees throughout the country for the commercial development of the telephone, laying the foundation for the Bell System of today.

Telephones first were leased in pairs. The lessee put up his own wire to connect his telephone with that of a friend or neighbor, or ran the line between his home and place of business. There was no way he could talk by telephone with others in the community who leased instruments.

“Mr. Bell, I heard every word you said—distinctly!”

The interconnection of these individual subscribers awaited the development of the telephone switchboard. The first switchboard was installed in the office of E. T. Holmes, in Boston, in May, 1877, and connected four banks and a manufacturing concern. It connected these few telephones in the daytime by wires that were used for a burglar alarm system at night. New Haven, Conn., became the first city in the world to have a commercial telephone exchange. A switchboard connecting eight lines and 21 subscribers went into service there in January, 1878.

Two years later in April, 1880, the American Bell Telephone Company was organized. It greatly developed the telephone organization and business throughout the country. A line from Boston to Providence was built in 1881. Service between Boston and New York, 235 miles, opened in 1884.

An important step in the attainment of a nation-wide telephone service was the organization of American Telephone and Telegraph Company in 1885. This company was formed to build and operate long distance lines to interconnect the regional companies that had developed, by merger and growth from early licensee companies.

To attain the ideal of universal telephone service, it became increasingly important to extend the long distance lines even farther, to carry on continuous investigation in the practical development of the telephone art, to make further progress toward the standardization of apparatus, equipment and methods and to handle economically and efficiently the many general problems shared by the telephone companies. In 1900, therefore, the American Telephone and Telegraph Company took over the assets of the American Bell Telephone Company and became the headquarters company of the Bell System.

Artist’s conception of the first commercial switchboard, placed in service in New Haven, Conn., 1878. In the early days of the telephone industry, operators were men.

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