Where is it from?

Association locations map

Telegraph Register - Siemens Bros, Embossing, post 1865 Object Reg. No: ST 021248

Telegraph embossing register. For receiving and recording telegraph signals.

In operation, the intermittent current generated by the received signals causes the embossing stylus to be intermittently pressed on to a moving paper tape. The stylus embosses 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 mechanism which moves the tape is driven by a falling weight.

The object is marked: 'Patent / Siemens Brothers/ London / No. 8150'. 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.
Wooden base carrying brass baseplate at one end of which are two vertical wire coils forming electromagnets. The rest of the base is occupied by a brass case housing the mechanism by which paper tape is moved past a stylus at the end of a pivoted arm which moves in response to the electromagnets. When the stylus is brought into contact with the tape, a mark is embossed into the paper. The tape is supplied from a reel (missing) 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.
Acquisition Information:
Donation from (Estate of) Mr James Smith, 1939
Discipline: Technology
Dimensions: 320 mm (Height), 155 mm (Width), 323 mm (Length)

More information

Tagged with: clockwork mechanisms, telegraphy, horology
Themes this item is part of: The Australian telegraph network 1854-1877, Telegraphy Collection, Information & Communication Collection, Science & Measurement Collection
Primary Classification: COMMUNICATIONS
Secondary Classification: Telegraphy
Tertiary Classification: output
Inscriptions: Engraved on side of brass case:
No. 8150'
Manufacturer: Siemens Bros Dynamo Works Ltd, London, England, Great Britain

Add your comment

  • Museum Victoria does not provide valuations, for more information please visit the valuation infosheet
  • Please note that Museum Victoria staff will not normally respond to comments posted on our website.
Yes No