Page:Hamel Telegraph history 1859.djvu/58

56 permitted, at the Euston-square terminus, in a large building (the carriage house) to suspend many miles of wire, along which the current was made to pass, besides the wires in the open air, to Camden Town.

On the 19th of November, 1837, Messieurs Cooke and Wheatstone concluded a partnership contract, and on the 12th December they gave in the specification of their apparatus. It was not called a new invention, but an improvement. Indeed, it was in the essential part founded on the same principle as Baron Schilling's, namely the deflection of needles by multipliers. Professor Wheatstone had, as was to have been expected from such a philosopher, greatly improved the application; the needles were placed in a vertical instead of the horizontal position, and their motion was limited by stops. At first he made an instrument with five such upright astatic needles, but this did not come into use, whereas telegraphs with two needles, and also with one needle, were adopted along the various lines.