[GreenKeys] Seeking information, history, ideas - GPE "Iron-Horse" Perforator

[David March]

I am in the process of refurbishing a Lorenz HL36 Tape Perforator for 
the National Museum of Computing ( www.tnmoc.org 
<http://www.tnmoc.org/>) in the UK. This is a "functional equivalent" to 
the GPE.

I would like to find out what these were used for, which branch of 
business (or military) and when they were in use. The Lorenz logo 
changed over the years and the logo on this model suggests 1930-1950s.

One peculiarity of the HL36 I am working on is that although it has a 
standard German keyboard layout (i.e. QWERTY with the Z and Y 
interchanged), the CR and LF keys have been mechanically locked out. 
Does this give anyone any ideas?

Thanks in advance

David March
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