TheCodeBreakers
worked for a time, he turned to carpentry and built and sold houses in
Fresno. Soon after he turned 40, he somehow became interested in
cryptology. Hebern was at this time a blue-eyed, brown-haired man of
medium height and build, mustachioed, quiet, a great reader, kind, and
even-tempered.
From 1912 to 1915, he filed for patents for cryptographic check-
writing devices, cipher keyboards for typewriters, movable letter blocks to
form mixed reciprocal monoalphabets, and a ciphering typewriter. In
1915, he devised an arrangement in which two electric typewriters were
connected by 26 wires in random fashion; thus when a letter was struck
on the plaintext keyboard, it would cause a ciphertext letter to print on
the other machine. Since the wires remained plugged into the same jacks
during an entire message, the cryptogram would be monoalphabetic—but
it would have been electromechan-ically enciphered.
annaabi.ee 
