
Jon Baddeley
Specialist Consultant Collectors, Science & Marine
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In 1924, the German engineer, Alexander von Kryha, invented a coding machine and applied for patents in both Germany and the USA.
The machine had a disc type mechanism with two variable alphabets which were irregularly displaced by a gear type wheel with alternately arranged groups of teeth and spaces.
There were eventually three models - the Standard, Electric and Liliput. Their basic difference was their speed of use with the Liliput being the slowest by delivering approximately 90 letters per minute.