Telegraph machine ticker

The telegraph ticker, a device that printed messages on paper tape, revolutionized communications in the 19th century.

About this subject

The telegraph ticker is an electromechanical device that converts electrical signals into printed characters on a continuous paper tape. Invented by Samuel Morse and Alfred Vail in the 1830s, the telegraph system enabled instant message transmission over long distances. The ticker, or register, materialized communication: upon receiving electrical pulses, a needle or hammer pressed the tape against a rotating cylinder, creating dots and dashes of Morse code. These marks were read by trained operators.

The ticker became iconic in financial markets: from the 1860s, the stock ticker allowed real-time transmission of stock prices between exchanges. The term "ticker" derives from the clicking sound the device made while printing. Companies like Dow Jones and Reuters emerged to deliver financial news via ticker.

In Brazil, the telegraph arrived in 1852, with the first line between Rio de Janeiro and Petrópolis. The ticker was crucial for national integration and the coffee trade, connecting farms to ports. With the advent of digital communications, tickers fell out of use, but their legacy persists in modern electronic quotation systems.

Frequently Asked Questions

How does the telegraph ticker work?

The ticker receives electrical pulses from a remote transmitter. These pulses energize an electromagnet that moves a lever with a metal tip, embossing dots and dashes onto a paper tape driven by a clockwork mechanism.

What is the difference between a telegraph and a ticker?

The telegraph is the complete communication system. The ticker is the output device that prints the message on paper, the part that records the received signals.

Is the ticker still used today?

Not in its original form. Modern quotation systems and data printers evolved from the ticker, but the mechanical mechanism has been replaced by electronic displays and digital transmission.