Archive for the ‘history’ tag
Bell Telephone System
Bell Telephone System
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WWI, BELL SYSTEM TELEPHONE REVIEW MAGAZINE, OCT. 1918 $5.99 |
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1954 BELL TELEPHONE SYSTEM Vintage Print Ad GRANDMA $9.99 |
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1946 VINTAGE BELL TELEPHONE SYSTEM JINGLE BELLS AD $4.99 |
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1944 Bell Telephone System US Battleship Military Ad $4.99 |
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1948 Bell Telephone System Making Service Better Ad $4.99 |
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1941 Bell Telephone System 2 Star Attractions Ad $4.99 |
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VINT BELL SYSTEM TELEPHONE RINGER by WESTERN ELECTRIC~ $15.00 |
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BELL SYSTEM Milwaukee Builder Telephone Planned Home Ad $9.99 |
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BELL SYSTEM Western Electric #202 OLD BLACK TELEPHONE $49.99 |
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TRIMLINE Rotary Dial BELL Systems Telephone phone Brown $9.99 |
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TONKA Cherry Picker truck BELL TELEPHONE System toy $0.99 |
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Vintage TELEPHONE DIRECTORY~BELL SYSTEM Matchbook Cover $0.99 |
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2 1940s STANLEY BELL TELEPHONE SYSTEMS AXES AX HATCHET $35.00 |
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VINTAGE Bell System Classic Black Rotary Desk Telephone $10.49 |
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Bell Systems Vintage Rotary Dial Wall Mount Telephone $15.50 |
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1963 Bell Telephone System Advertisement $9.99 |
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BELL SYSTEM telephone sign “No Job is so important…” $12.85 |
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Vintage Print Ad Bell Telephone System 1964 old ads $5.99 |
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Vintage Print Ad Bell Telephone System 1960 old ads $5.99 |
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Old Bell System Rotary Telephone With Ringer Box $47.00 |
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Vintage Bell Atlantic Telephone System Lucite Award $19.99 |
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1940s50s Bell System outdoor dial TELEPHONE WE 525B $51.00 |
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Vtg 1948 ~Ad~ Bell System Rotarless Telephone Cable Man $8.95 |
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New Public Telephone Bell System 9″ Decal $5.00 |
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1941 BELL Telephone System Long distance Operator Ad $4.99 |
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Lot 2 1930 Bell Telephone System Candlestick Phone Ads $4.99 |
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1981 Baby’s first step BELL SYSTEM telephone vintage ad $9.99 |
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Trunk Lines Bell Telephone System Map 1917 40×64″-Rare $49.99 |
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1934 * Bell System * Telephone Almanac $9.99 |
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1966 Bell System two telephone styles photo print ad $9.99 |
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BELL SYSTEM VERIZON TELEPHONE COMPANY PAPERWEIGHT $9.99 |
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BELL SYSTEM VERIZON TELEPHONE COMPANY PAPERWEIGHT $9.99 |
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1956 Ad Bell Telephone System Bedroom Phone Mom $4.99 |
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1953 Ad Bell Telephone System Operators Friendly Say $4.99 |
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1953 Ad Bell Telephone System Operators Friendly Say $4.99 |
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Vintage PACIFIC TELEPHONE Bell System Memo Book K25 $7.99 |
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Blue Glass Bell New York Telephone Company Bell System $20.70 |
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TONKA Cherry Picker truck BELL TELEPHONE System toy $0.99 |
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Bell System Telephone Pen Pencil Set $24.99 |
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1959 BELL TELEPHONE SYSTEM Vintage Print Ad $9.99 |
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Bell System Public Telephone Round Porcelain Sign $17.99 The Bell Telephone Co. was formed by Alexander Graham Bell a year after his first words went over a telephone in 1876. American Telephone & Telegraph was formed in 1885 as a separate company to establish long distance service between cities. Its general manager, Angus Hibbard, came up with the Blue Bell design. When AT&T took over the Bell Co. in 1899, it used the trademark for the Bell System. Hi… |
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1928 AT&T Bell Telephone System Pony Express Rider Print Ad An original vintage magazine ad print from the year published. Print ads make unique gift items that can be framed as artwork. Shipped flat un-framed in plastic sleeve with backing board…. |
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1930 Bell Telephone System Words Have Wings Phone Print Ad An original vintage magazine ad print from the year published. Print ads make unique gift items that can be framed as artwork. Shipped flat un-framed in plastic sleeve with backing board…. |
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Good Friends Are for Keeps; American Sings of Telephones 100th Year Celebration Album $4.99 … |
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Northwestern Bell Cordless Telephones 2 with Digital Answering System Call Waiting Caller ID $74.95 Northwestern Bell Large Button Cordless Phone with Dual Handsets provides a 40 channel auto scan 20 number memory two handset capability and handset vibration on incoming calls The Braille augmented keypad and large LCD screen make this phone suitable for those with low vision or the blind Other features include in use charge LED indicator mute your choice of English Spanish or French compander no… |
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Telephone Communications Technology: Dial Comes To Town $9.99 Gramps does not like much. He especially does not fancy the idea of the new dial phones that are soon to replace the old phones in town. Indignant he calls up his friend and we see the way phones worked before the dial telephone replaced them. Gramps’ questioning of the new phones falls along the lines of, ‘why change something that is not broken?’ He learns the answer to this question, and many m… |
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Bell Telephone Company: Underground Cable (1940s) [DVD] $9.99 Underground Cable, a creation of Bell Telephone Company, outlines efforts to waterproof underground cable around the San Francisco Bay area. Some basic engineering principals are explained as well as the importance of keeping below ground wiring dry…. |
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Vintage Technology & Communications Film: The Town & The Telephone $9.99 One of the essential factors in the growth of a city is its communications capabilities. The communication services provided by the telephone company is designed to provide the means for transacting business, the means for communicating information, for seeking help, for keeping old friends in touch. “The Town & The Telephone,” takes a look at how communication services such as the telephone influ… |
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Northwestern Bell Digital Answering System (62800-1B) $10.75 NW BELL 62800-1B DIGITAL ANSWERING SYSTEM 13-MIN RECORDING CAPACITY;DUAL OGMS ;CALL SCREENING;VOICE ACTIVATION (VOX); VOICE PROMPT SYSTEM ; WHITE… |
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Southwestern Bell S60545 Cordless Phone Backup System $9.37 With over 2500 products to offer, Gemini covers a wide range of leading-edge consumer electronic accessory categories including telephone, audio, video and computer. Gemini’s focus on brand building, quality and value has set the company’s course for the future. With the company’s team of professionals and the unparalleled levels of support they provide, you can count on Gemini thru the new millen… |
The Invention of the Telephone
The history of the telephone, from its invention to its present state of perfection, is interesting in the extreme, and affords a striking example of the fact that great inventions are almost invariably the result of long and careful study on the part of many workers, rather than the sudden inspiration of a single genius.
These steps were made in logical order, the knowledge contributed by each investigator making possible a deeper insight into the subject on the part of his successors.
The history of the knowledge of electromagnetism begins with July 20, 1820, and with this date very properly begins the history of the electric telephone. On that day Oersted, a professor in the University of Copenhagen, discovered that a magnetic needle tends to place itself at right angles to a wire carrying a current of electricity. Ampere immediately took up the subject, and in a very short time disclosed the laws upon which present electromagnetic theory is based.
In the following year Arago and Davy discovered that if a current be caused to flow through an insulated wire wrapped about a rod of steel the latter would exhibit magnetic properties. It was William Sturgeon, however, who in 1825 made an electromagnetas we know it today, and called it by that name. Joseph Henry also made his classic experiments on the electromagnet. Henry showed how to build a magnet capable of being operated over a great length of wire, a most important step.
In 1831 Faraday and Henry, independently, discovered the converse of these laws of electromagnetism that if the intensity of a magnetic field inclosed by a conductor be in anywise changed, a current of electricity will flow in the conductor. This current will flow only while such change is taking place, and its strength will depend directly on the rate of the change.
These two laws concerning the transformation of electric energy into magnetic, and its converse, the transformation of magnetic energy into electric, are certainly the most important in the field of telephony.
In 1837 Professor Page of Salem, Mass., discovered that a rod of iron, suddenly magnetized or demagnetized, would emit certain sounds due to a molecular rearrangement caused by the changing magnetic conditions. This phenomenon is known as ” Page’s effect.”
In 1854 a Frenchman, Charles Bourseul, predicted the transmission of speech, and outlined a method correct save in one particular, but for which error one following his directions could have produced a speaking telephone. His words at this date seem almost prophetic:
“I have asked myself, for example, if the spoken word itself could not be transmitted by electricity; in a word, if what was spoken in Vienna may not be heard in Paris?”
Philip Reis, a German inventor, constructed what he called a telephone in 1861, following implicitly the path outlined by Bourseul.
Reis’ telephone could be depended upon to transmit only musical sounds. The question as to whether it actually did transmit speech has been the subject of much discussion, but if it did this at all it was very imperfectly.
For the next fifteen years no apparent advance was made in the art of telephony, although several inventors gave it their attention.
In 1876 Professor Alexander Graham Bell and Professor Elisha Gray almost simultaneously invented successful speaking telephones. Gray was one of the principal claimants for the honor of being the first inventor of the telephone, but Bell apparently established his right to it, and also reaped the profit, for, after long litigation, the United States Patent Office and the courts awarded the priority to him instead of Gray.
About the Author
Malcolm Blake has written several articles relating to the telephone and telephone related services. Read his texts on reverse 411 services and reverse number look up sites.