In 1878 he opened a shop for the production of scientific instruments and a year later, Alexander Bell called him to his Volta Laboratory in Washington, D.C., where Tainter would work for the next seven years.
In 1878 he opened a shop for the production of scientific instruments in Cambridgeport, Massachusetts. A year later Alexander Graham Bell called Tainter to his Volta Laboratory in Washington, D.C., where he would work for the next seven years.