Relief-writer telegraph of the Hamburg-Cuxhaven telegraph line

When Charles Robinson became construction manager of the Hamburg-Cuxhaven telegraph line in 1847, he and his stepfather William sold just 2 Morse code writers as samples to the "Electro Magnetic Telegraph Company." The Hamburg watchmaker Wilhelm Bröcking used their model to manufacture this machine for the remainder of the line. The Robinsons apparently did not want to establish themselves as telegraph manufacturers but wanted to return to the US with a quick profit from the sale of the template.