ClipArt ETC
(1847-1942) Inventor of the telephone

Alexander Graham Bell

(1847-1942) Inventor of the telephone

Man speaking into telephone.

Bell telephone

Man speaking into telephone.

Two men using a telephone.

Telephone

Two men using a telephone.

Girl with telephone.

Girl

Girl with telephone.

Boy with telephone.

Boy

Boy with telephone.

Thomas Edison invented the automatic repeater, duplex telephone, phonograph, the electric pen, the microphone, the megaphone, kinetoscope, the microtasimeter, and the quadruplex and sextuplex transmitters.

Thomas A. Edison

Thomas Edison invented the automatic repeater, duplex telephone, phonograph, the electric pen, the microphone,…

Alexander Graham Bell's original model of the telephone reciever and transmitter.

Telephone

Alexander Graham Bell's original model of the telephone reciever and transmitter.

"The Age of Progress, the telephone."—E. Benjamin Andrews 1895

Age of Progress

"The Age of Progress, the telephone."—E. Benjamin Andrews 1895

Scientist, inventor, and founder of Bell Canada.

Alexander Graham Bell

Scientist, inventor, and founder of Bell Canada.

"The transmitter is a microphone adapted for the transmission of telephone messages and, in general practice, is so used, better results being thus secured than is possible when the transmitter and receiver are identical. In the Blake transmitter, a diagram is supported back of a mouthpiece, as in the Bell telephone."

Blake transmitter

"The transmitter is a microphone adapted for the transmission of telephone messages and, in general…

An early form of the telephone.

Telephone

An early form of the telephone.

An instrument for reproducing sound at a distance by the transmission of impulses through the agency of electricity over a conducting wire or cord.

Telephone

An instrument for reproducing sound at a distance by the transmission of impulses through the agency…

An interior view of the chemical telephone.

Chemical Telephone

An interior view of the chemical telephone.

Edison's first Articulating Telephone.

Articulating Telephone

Edison's first Articulating Telephone.

Edison's Carbon Telephone. He tried using carbon with the purpose of reducing the delicacy of the instrument.

Carbon Telephone

Edison's Carbon Telephone. He tried using carbon with the purpose of reducing the delicacy of the instrument.

(1847-1931) Famous American inventor.

Thomas Alva Edison

(1847-1931) Famous American inventor.

"The telephone standard and compound forms of Fuller cell... The Fuller cell is of the double fluid cariety and has the advantage over the Grenet type, in that the zinc is always kept well amalgamated and does not require removal from the solution." -Hawkins, 1917

Fuller Cell

"The telephone standard and compound forms of Fuller cell... The Fuller cell is of the double fluid…

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative element copper oxide. The Edison cell is suitable for large stationary gas engine ignition, ralroad crossing signals, electroplating, fire alarms, telephone cicuits, etc." -Hawkins, 1917

Edison Cell

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative…

The Bell receiver reproduces sounds made on the other end of the circuit, from a transmitter of some kind, used in telephone correspondance. -Atkinson 1903

Bell Receiver

The Bell receiver reproduces sounds made on the other end of the circuit, from a transmitter of some…

The Blake transmitter is used in taking voice and transferring it into an electrical signal that can be reproduced by a receiver. Used in telephone systems.

Blake Transmitter

The Blake transmitter is used in taking voice and transferring it into an electrical signal that can…

"A simple telegraph consisting of two telephone receivers, two batteries, and two keys." -Avery 1895

Simple Telegraph

"A simple telegraph consisting of two telephone receivers, two batteries, and two keys." -Avery 1895

"Instead of the telephone receivers normally used in telegraphs, substitute with galvanoscopes. When 1 is pressed, the needles at G and G' will be turned in one direction; when 2 is depressed, teh needles will be turned in the other direction." -Avery 1895

Telegraph Using Galvanoscopes

"Instead of the telephone receivers normally used in telegraphs, substitute with galvanoscopes. When…

"When a person speaks into the transmitter, the pulsations of the air, produced by the voice, produce the slight vibrations of the diaphragm...and these vary the pressure of the platinum point on the carbon disk, and these vary the strength of the electric current, and reproduce precisely similar vibrations in the diaphragm of the receiver, at the opposite end of the line, which reproduce the spoken words." -Atkinson 1903

Electric Telephone

"When a person speaks into the transmitter, the pulsations of the air, produced by the voice, produce…

The transmitter of Bell's telephone.

Telephone Transmitter

The transmitter of Bell's telephone.

The receiver of Bell's telephone.

Telephone Receiver

The receiver of Bell's telephone.

The candlestick or upright telephone was used in the early to mid-twentieth century.

Candlestick Telephone

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 the method of representing the exact form of an object in two or more views on planes generally at right angles to each other, by dropping perpendiculars fro the object to the planes.

Orthographic Projection of Candlestick Telephone

Orthographic projection drawing of a candlestick or upright telephone. An orthographic projection is…

Orthographic projection drawing of an arm-chair. An orthographic projection is the method of representing the exact form of an object in two or more views on planes generally at right angles to each other, by dropping perpendiculars from the object to the planes.

Orthographic Projection of Arm-Chair

Orthographic projection drawing of an arm-chair. An orthographic projection is the method of representing…

An illustration of one of the early telephones, known as a chemical telephone. Some used a liquid transmitter, some had a metal diaphragm that induced current in an electromagnet wound around a permanent magnet, and some were "dynamic" - their diaphragm vibrated a coil of wire in the field of a permanent magnet or the coil vibrated the diaphragm.

Chemical Telephone

An illustration of one of the early telephones, known as a chemical telephone. Some used a liquid transmitter,…

A side view of a diving helmet. K, Segmental neck rings; D, Air conduits; Telephone receiver; N, transmitter; and O, contact piece to ring bell.

Diving Helmet (Side)

A side view of a diving helmet. K, Segmental neck rings; D, Air conduits; Telephone receiver; N, transmitter;…

Top view of diving helmet. C, Air inlet valve; E, Regulating outlet valve; G, Glasses in frames; L, Eyes to which air pipe and life line are secured; and P, Connection for telephone cable.

Diving Helmet (Top)

Top view of diving helmet. C, Air inlet valve; E, Regulating outlet valve; G, Glasses in frames; L,…

An illustration of communication between a diver and the surface. Q, Battery with switch and bell in case; and R, Attendant's receiver and transmitter.

Diver's Communication

An illustration of communication between a diver and the surface. Q, Battery with switch and bell in…

A tin can telephone is a type of voice-transmitting device made up of two tin cans, paper cups or similar articles attached to either end of a string.

Tin Can Telephone

A tin can telephone is a type of voice-transmitting device made up of two tin cans, paper cups or similar…

"Sectional view of a telephone building. A typical American central office building, showing the efficient arrangement of the various departments." -Hill, 1921

Office Building

"Sectional view of a telephone building. A typical American central office building, showing the efficient…

This sign indicates that a telephone is located nearby.

Telephone, Black and White

This sign indicates that a telephone is located nearby.

This sign indicates that a telephone is located nearby.

Telephone, Color

This sign indicates that a telephone is located nearby.

This sign indicates that a telephone is located nearby.

Telephone, Outline

This sign indicates that a telephone is located nearby.

This sign indicates that a telephone is located nearby.

Telephone, Silhouette

This sign indicates that a telephone is located nearby.

This telephone uses magnets that converts sound into electrical signals to be transmitted over distances and then converts the signals back.

First Uses of the Telephone

This telephone uses magnets that converts sound into electrical signals to be transmitted over distances…

Telegraphy is the long distance transmission of written messages without physical transport of letters. A telegraph is a device for transmitting and receiving messages over long distances.

The Inner Workings of Telegraphy

Telegraphy is the long distance transmission of written messages without physical transport of letters.…

Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After protracted patent litigation, in 1892 a federal court ruled that Edison and not Emile Berliner—was the inventor of the carbon microphone. The carbon microphone was also used in radio broadcasting and public address work through the 1920s.

Telephone Transmitter Carbon Microphone

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 issue have arisen from time-to-time. As with other great inventions such as radio, television, light bulb, and computer, there were several inventors who did pioneering experimental work on voice transmission over a wire and improved on each other's ideas.

Telephone Transmitting Device

Credit for the invention of the electric telephone is frequently disputed, and new controversies over…

This telephone wall mount bracket allows you to mount the main unit to a vertical surface. This device includes a covered cable tray for organized cable management.

Mounting for Telephonic Device

This telephone wall mount bracket allows you to mount the main unit to a vertical surface. This device…

A typical phone call, traditionally, is placed by picking the phone handset up off the base and holding the handset so that the hearing end is next to the user's ear and the speaking end is within range of the mouth. The caller would then rotary dial or press buttons for the phone numbers needed to complete the call.

Placing a Phone Call

A typical phone call, traditionally, is placed by picking the phone handset up off the base and holding…

A pay phone or pay phone is a public telephone, with payment by inserting money (usually coins) or a credit card or debit card before a call is made.

Pay Phone

A pay phone or pay phone is a public telephone, with payment by inserting money (usually coins) or a…

An illustration of the rotary dial on phones. Each hole corresponds to the number shown. To dial the number, the person will insert the finger into the phone and turn the dial until the finger hits the metal stop.

Telephone Rotary Dial

An illustration of the rotary dial on phones. Each hole corresponds to the number shown. To dial the…

An instrument that converts voice and other sound signals into a form that can be transmitted to remote locations and that receives and reconverts waves into sound signals.

Early Use Telephone

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 locations and that receives and reconverts waves into sound signals.

Early Model Telephone

An instrument that converts voice and other sound signals into a form that can be transmitted to remote…

a transmitter is an electronic device which, usually with the aid of an antenna, propagates an electromagnetic signal such as radio, television, or other telecommunications.

Telephone Transmitter

a transmitter is an electronic device which, usually with the aid of an antenna, propagates an electromagnetic…

Two men testing for bad joints in the railway. One man holds metal poles a and b three feet apart. Wires are connected to the poles that lead to the box the other man is holding. There is a bell inside of the box which will not ring when a current is running through it. When the phone makes a noise, there is a bad joint present.

Joint Detection

Two men testing for bad joints in the railway. One man holds metal poles a and b three feet apart. Wires…