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Telegraph Register - Siemens Bros, Inking, post 1865 Object Reg. No: ST 029883

A morse inking register for receiving and recording telegraph signals.

In operation, the intermittent current generated by the received signals causes a small rotating wheel to be intermittently pressed on to a moving paper tape. The wheel is partially immersed in a small container of ink. The rotating wheel carries the ink to the paper and produces a series of long and short marks on the tape, with the length of each mark depending on whether the duration of the current flow is long (producing a dash) or short (producing a dot.)

The object is marked: 'PATENT/SIEMENS BROTHERS/LONDON/ No. 7263'. The British subsidiary of Siemens & Halske, of Berlin, was set up as Siemens, Halske & Co. in 1858, and was re-named Siemens Brothers in 1865. Thus it seems likely that this object was manufactured in London in or after 1865.
Object consists of a metal base at one end of which are two vertical wire coils forming electromagnets which are energised by the electrical signal received over the telegraph line. The rest of the base is occupied by a brass case housing the mechanism by which paper tape is moved past a small wheel at the end of a pivoted arm which moves in response to the electromagnets. The wheel is partially immersed in ink held in a small rectangular container, so that when the wheel is in contact with the tape, ink is carried on to the tape as the wheel rotates. The tape is supplied from a reel mounted above the register on a metal arm. The mechanism to move the tape is powered by a spring within the brass case which can be wound up using a key on a central square shaft.
Discipline: Technology
Dimensions: 430 mm (Height), 170 mm (Width), 310 mm (Length)

More information

Tagged with: morse printers, printing, printing equipment, telecommunications, telegraph equipment
Themes this item is part of: The Australian telegraph network 1854-1877, Telegraphy Collection, Information & Communication Collection
Primary Classification: COMMUNICATIONS
Secondary Classification: Telegraphy
Tertiary Classification: output
Inscriptions: Engraved on side of mechanism case:
No. 7263'
Manufacturer: Siemens Bros Dynamo Works Ltd, London, Middlesex, England, Great Britain, post 1865

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