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Hughes Telegraph #3

David Edward Hughes Third Model Printing Telegraph

This model was patented in the UK in 1863 patent #241 and was used extensively in Europe.

Again the functionality of the instrument was the same but the implementation was evolving with additional requirements and robustness due to its heavy use. The vertical timing rod was replaced by a horizontal pendulous spring and bob weight, fixed at one end and caused to describe a circular motion at the other end.