Relief-writer telegraph with weight drive, built as part of the Bremen-Bremerhaven telegraph line

Built in 1846, the Bremen-Bremerhaven telegraph line was operated by needle telegraphs like those of Cooke and Wheatstone, and was built by Friedrich Heinrich Brüggemann and Johann Wilhelm Wendt. In 1849 the pointer telegraph was tested by Emil Stöhrer. Finally the Bremen Telegraph Club bought 2 Morse telegraphs from Charles and William Robinson, who had come to Germany in 1847 to market the Morse telegraph which had not yet been patented there. Brüggemann continued to build other devices to the same design.