Telegraph machine ticker

The telegraph ticker was a device that printed telegraph messages on paper tape, revolutionizing the transmission of news and financial information in the 19th century.

About this subject

Invented by Edward A. Calahan in 1867, the telegraph ticker was initially developed for the New York Stock Exchange. It allowed continuous transmission of stock quotes and news via electrical signals that triggered a printing mechanism. The paper tape, known as ticker tape, emerged from the machine with alphanumeric characters and special symbols, read by operators or investors.

The ticker operated on a modified Morse code system. Each character was represented by a sequence of electrical pulses that moved a typewheel. Unlike conventional telegraphs, the ticker required no specialized operator; it printed automatically, making information accessible to a broader audience. This advance dramatically accelerated communication in financial markets, reducing the dissemination time of prices from hours to minutes.

Culturally, ticker tape became famous through parades in New York, where paper strips were thrown from windows in celebrations. The term “ticker tape parade” became synonymous with civic festivities. Although the mechanical system was gradually replaced by faster electric telegraphs and later digital networks, the telegraph ticker left a legacy as one of the first real-time mass communication devices.

Frequently Asked Questions

How did the telegraph ticker work?

The telegraph ticker received electrical signals encoded in modified Morse code. These signals triggered a mechanism that printed characters onto a continuous paper tape, allowing automatic reading of messages and quotes.

Why is it called a 'ticker'?

The name 'ticker' comes from the clicking sound produced by the printing mechanism during operation. This rhythmic noise resembled a 'tick-tock', giving rise to the term.

What impact did the ticker have on communication?

The ticker enabled real-time transmission of news and financial data, reducing dissemination time from hours to minutes. It was crucial for the development of modern stock markets and for democratizing access to information.