The Telephone and Telegraph Industry ClipArt gallery offers 75 illustrations of telephones and telegraph equipment, including early models and supporting infrastructure such as cable and switchboards.
Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver…
Credit for the invention of the electric telephone is frequently disputed, and new controversies over…
The candlestick or upright telephone was used in the early to mid-twentieth century.
Orthographic projection drawing of a candlestick or upright telephone. An orthographic projection is…
An illustration of one of the early telephones, known as a chemical telephone. Some used a liquid transmitter,…
An instrument that converts voice and other sound signals into a form that can be transmitted to remote…
An instrument that converts voice and other sound signals into a form that can be transmitted to remote…
"When a person speaks into the transmitter, the pulsations of the air, produced by the voice, produce…
This telephone uses magnets that converts sound into electrical signals to be transmitted over distances…
A tin can telephone is a type of voice-transmitting device made up of two tin cans, paper cups or similar…
This telephone wall mount bracket allows you to mount the main unit to a vertical surface. This device…
a transmitter is an electronic device which, usually with the aid of an antenna, propagates an electromagnetic…
"Wireless Telegraphy is a system of transmitting messages between distant points without the use of…