A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy, magnetos were used to power instruments, while in telephony they were used to generate electrical current to drive electromechanical ringers in telephone sets and activate signals on operator consoles.
A telephonemagneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early...
permanent magnets. Hand-cranked magneto generators were used to provide ringing current in telephone systems. Magnetos were also adapted to produce pulses...
some magneto systems remained even into the 1960s. After World War II, the telephone networks saw rapid expansion and more efficient telephone sets,...
two for speaking. Rural and other telephones that were not on a common battery exchange had hand cranked "magneto" generators to produce an alternating...
system and controlled externally. Alternator Magneto Ignition magnetoMagneto (generator) Telephonemagneto von Meier, Alexandra (2006). Electric Power...
of numbers became more common in the 1920s. In rural areas with magneto crank telephones connected to party lines, the local phone number consisted of the...
large N°. 6 cells in the subscriber's telephone, provided the direct current for the transmitter. Such magneto systems were in use in the US as late as...
The invention of the telephone was the culmination of work done by more than one individual, and led to an array of lawsuits relating to the patent claims...
was installed, telephones had hand-cranked magneto generators to generate a ringing voltage back to the exchange or any other telephone on the same line...
used with or without a telephone switchboard. The term originated in magnetotelephone signaling in which cranking the magneto generator, either integrated...
manual magneto (hand-crank) telephone exchange in America. The family-owned Bryant Pond Telephone Company was operated from a two-position magneto switchboard...
capacitors, and, if required, a magneto generator. The subscriber set interfaced a telephone set to the telephone network, while magneto generators were used in...
of telephone subscribers in Peninsular Malaysia increased significantly. By 1930, to deal with the volume of telephony traffic, an automated magneto exchange...
variety, was the B1A hand telephone set, which was used for local battery telephones with a wooden subscriber set and magneto box, and for common battery...
Electric Lights U.S. patent 0,221,957 – Telephones U.S. patent 0,222,390 – Carbon-Telephones U.S. patent 0,222,881 – Magneto-Electric Machines : Edison main dynamo...
markets. Telephones of this period had a simpler design and finish, and many of the early automatic desk telephones in Ericsson's catalogues were magneto styles...
telecommunications industry between telephone switches. Various mnemonic names have been used to memorize these letters, such as Earth and Magneto or Ear and Mouth, the...
issued a range of telephone instruments to telephone service subscribers that were matched in function and performance to its telephone exchanges. Until...
of newspapers. Some Rochester Telephone customers in outlying areas were still forced to rely on magneto crank telephones, and in certain suburbs customers...
Edition Wall Telephone (a modern reproduction of Western Electric's 1892 oak magneto wall set) (rotary only) Other Design Line telephones available in...
that lit when the customer's telephone receiver was lifted (the earliest systems required the customer to hand-crank a magneto to alert the central office...
key, it would stop and the magneto would be disconnected from the line. The communicator's pointer was geared to the magneto mechanism. The indicator's...
earliest telephone services were installed as point to point systems. That is from a telephone in one premise of a company to a second telephone in a separate...
earlier booth 30 miles (48 km) to the south. The original hand-cranked magneto phone was replaced with a payphone in the 1960s. The rotary phone was then...
1845 – May 13, 1903) was an inventor who designed the telephone switchboard and the magneto bell. Gilliland had a laboratory in his home and "kept seven...