Hagelin C-35 and C-36

From Wikipedia:

"The C-35 and C-36 were cipher machines designed by Swedish cryptographer Boris Hagelin in the 1930s. These were the first of Hagelin's cipher machines to feature the pin-and-lug mechanism. A later machine in the same series, the M-209, was widely-used by the United States military.

In 1934, the French military approached Hagelin to design a printing, pocket-size cipher machine; Hagelin carved a piece of wood to outline the dimensions of a machine that would fit into a pocket. He adapted one of his previous inventions from three years earlier: an adding device designed for use in vending machines, and combined it with the pinwheel mechanism from an earlier cipher machine (the B-21). The French ordered 5,000 in 1935. Italy and the USA declined the machine, although both would later use the M-209/C-38. Completely mechanical, the C-35 machine measured 6 × 4.5 × 2 inches, and weighed less than 3 pounds.

A revised machine, the C-36, was similar to the C-35, but included moveable lugs and a protective case for the machine. Six C-36 machines were purchased by the Swedish Navy for testing in October 1937. Both machines had five pinwheels with 17, 19, 21, 23 and 25 pins, each individually settable, giving a maximum period of 3,900,225 for the machine.

One variant had a Thai alphabet on the pinwheels, rather than the usual Latin alphabet".

All C35 photos in this table by John Alexander G7GCK. The case colour is blue.  



This C-36 is on display at Bletchley Park. (Photo by Matt Crypto - Wikipedia)

C-36 lubrication points. (Image courtesy John Alexander G7GCK)

This is the French version of the manual for the C36. Tome 19 means Volume 19 in French. The manual also refers to the C36-M2. It is not known if the M2 suffix is of French origin or whether it was a Hagelin designation. (Image courtesy John Alexander G7GCK)

Contributors and Credits:

1) John Alexander  G7GCK <jalex_uk(at)ntlworld.com>
2) http://en.wikipedia.org/wiki/C-36_(cipher_machine)

Back To Menu Page

Nov 24/08