Need Help Identifying Obsucre 16mm Cinema Mount

[JoeBenjamin]

So I just picked up these two obscure lenses on eBay. One is an Elgeet Cine Navitar 35mm f/2.0 and the other an Elgeet Cine Navitar 8mm f/1.5. From what I could deduce they were made for Fairchild high-speed 16mm cameras, but information on those cameras is scant (all I could find: http://www.alangordon.com/r_filmcam16_3.htm ). The registration (mount to sensor) distance is somewhere in the 36mm area, and the mount's diameter is 35mm minus the flanges. There are 3 flanges and each is notched kind of like an Arri PL mount.

I checked through these two lists of cinema and other lens mounts and the numbers and design don't quite match anything out there:
http://www.graphics.cornell.edu/~westin/misc/mounts-alphabetical.html (http://www.graphics.cornell.edu/%7Ewestin/misc/mounts-alphabetical.html)
http://www.filmcentre.co.uk/faq_lens_m.htm

I really hope this isn't a mount unique to those Fairchild cameras because I'd have to fashion some sort of adapter myself. Anyone have any ideas? Pictures:

http://i229.photobucket.com/albums/ee266/JoeBenjamin/KGrHqUOKowE0fe4jMQtBNcFdZHPsw_12.jpg
http://i229.photobucket.com/albums/ee266/JoeBenjamin/KGrHqMOKj0E0FtBJyBNcFdhebw_12.jpg
http://i229.photobucket.com/albums/ee266/JoeBenjamin/KGrHqUOKjUE1m-uEGZ5BNcFznfiQ_12.jpg
http://i229.photobucket.com/albums/ee266/JoeBenjamin/KGrHqQOKpEE1rfzz9BNcFztBkOQ_12.jpg

[David W. Jones]

I would double check to see if the mount unscrews to reveal a C-mount lens.
You might also give Alan Gordon a call, as they used to rent high speed Fairchild cameras.

Good Luck!

Dave

[JoeBenjamin]

Thanks. With that recessed screw removed the flange mount and wide ring screwed right off. No errant parts fell out and the rest of the lens appears intact. Now I've got a 30mm thread (so non-C-mount) to work with. I've got a M42-m4/3 focusing helicoid on the way from Hong Kong. Now I just need to figure out how to adapt 30mm to 42mm, and since they don't make filter step down rings at those measurements....

Anyone have any recommendations for a machine shop that takes mail orders for camera- and lens-related work?