The telegraph in American and Morse memorial (1886)
Reid, James D · New York, Printed for the author by J. Polhemus · leaf 83
are at the same time marked by m on its own ribbon of paper.The dotted lines shadow the original A-shaped lever of Diagram 4, 6o Morse Memorial. showing the same assemblage and arrangement of parts as in the originalinstrument. * It may seem singular to some that the plan of direct… … Diagram 9. since too it was the first and the most obvious mode devised. Havingchosen, however, for economical reasons, the stretching-frame as themost convenient support at hand for the machinery, it was necessary toadapt the parts to this choice, even if my results must be attained in amore…
Morse, Samuel Finley Breese, 1791-1872 · Telegraph
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