Thomas Edison Patent Models

Stock tickers are telegraphs that printed real-time financial information. Edison made several improvements to these devices; he was interested in finding a way to synchronize multiple units. This model contains a unison stop device that allowed all stock tickers in a circuit to be brought into phase with a stock ticker in a central office.

This patent demonstrated the recording and transmitting of Morse code messages. A cardboard disc was placed on top of a rotating plate with spiral grooves. Indentations were embossed onto the cardboard by a needle powered by an electromagnet. These indents formed a recorded message, which could then be transmitted—without needing an operator—to several stations, saving labor.

Edison received a patent for this electrographic vote recorder in 1869. Legislative bodies could record votes accurately and instantaneously with his device. Edison's invention stirred little interest and was never manufactured. The invention's significance, however, should not be overlooked. This was the first of Edison's 1093 U.S. patents and in a way marks the start of his inventive activity.

Thomas Edison's reputation was initially established through his work in telegraphy, particularly on stock tickers -- telegraphs that printed real-time financial information. While he did not invent the stock ticker, his improvements -- particularly those related to synchronizing multiple units -- were a great commercial success. Edison's experience with telegraphy infrastructure, and his approach to continually refining his designs, was foundational for his later successes.