Telegraph machine ticker

The telegraph ticker, invented by Edward Calahan in 1867, revolutionized the transmission of financial quotes and news in real time.

About this subject

The telegraph ticker was an electromechanical device that printed coded messages on paper tape, known as ticker tape. Created by Edward Calahan in 1867 and improved by Thomas Edison, the machine became essential for the New York stock market, transmitting stock quotes continuously. Before it, financial information took hours or days to reach investors, who relied on messengers or printed bulletins.

The ticker's operation was based on modified Morse code: electrical pulses activated a type wheel that pressed the paper tape against a printing mechanism, generating sequences of letters and numbers. Each character represented a stock symbol and its price. The tapes were then read by brokers and investors, who made buying and selling decisions based on that data.

The cultural impact was huge. The discarded tapes gave rise to ticker tape parades in New York, celebrating heroes and important events, such as Charles Lindbergh's return after his transatlantic flight. Moreover, the term "ticker" persists today in electronic quotation systems, such as the stock market ticker.

With technological advances, mechanical tickers were replaced by electronic displays and software in the 1960s and 1970s. However, the principle of transmitting information continuously and in real time remains the foundation of modern financial data systems. The telegraph ticker represented a leap in the speed of information, connecting markets and people in an unprecedented way.

Frequently Asked Questions

How did the telegraph ticker work?

The ticker received electrical signals coded in Morse code, which activated a type wheel. This wheel pressed a paper tape against a printing mechanism, producing letters and numbers representing stock symbols and their prices.

Who invented the telegraph ticker?

The ticker was invented by Edward Calahan in 1867 and later improved by Thomas Edison, who developed a more reliable and faster model.

What is the origin of ticker tape parades?

Ticker tape parades originated in New York in the late 19th century, when discarded ticker tape was thrown from windows during celebrations. The first major parade was for the dedication of the Statue of Liberty in 1886.