Sanders and Hubbard, much annoyed that Bell had abandoned his harmonic telegraph for so visionary an idea as a long distance talking machine, refused to finance him further unless he returned to his original quest.

Disappointed and disconsolate, Bell and his assistant, Thomas A.Watson, had started work on the top floor of the Williams Manufacturing Company's shop in Boston.
And now another chance happening turned Bell back once more to the telephone.

His magnetized telegraph wire stretched from one room to another located in a remote part of the building.

One day Watson accidentally plucked a piece of clock wire that lay near this telegraph wire, and Bell, working in another room, heard the twang.

A few seconds later Watson was startled when an excited and somewhat disheveled figure burst into his room.