Dated 1858-1867. From Scientific apparatus, musical instruments and telegraph equipment, [1834-1875].
Automatic telegraph printing receiver devised by Wheatstone. Impulses of current from the sender cause the electromagnet to operate two brass wire armatures. Ink is pushed by the armatures from a brass tray through two small holes creating dots on paper tape fed underneath. The mechanism is mounted on a wooden base, one armature missing.