Illinois motor barrel

syfre · April 10, 2016

Illinois motor barrel.jpg

Not really a "true" motor barrel like the Waltham design is ; but nice piece of engineering

About motor barrel :

http://ihc185.infopop.cc/eve/forums/a/tpc/f/1086047761/m/9143964277

bobm12 · April 10, 2016

Interesting and, to me, a curiosity! Never seen one before. Thank you for posting it Syfre!

Cheers,

Bob

Kraai · April 10, 2016

Another "motor barrel" ?

A Hebdomas 8 Jours pocket watch is fitted with a very long mainspring in a big barrel.
The outside of the barrel turns when you winding the watch (60 full turns once a week).
You can see the click in the upper left.

EJ

syfre · April 11, 2016

nice watch, i didn't know this factory, looks that they are still in business and product this model.

http://www.hebdomas.net/hebdomas/8_day_-_ascot.html

oldhippy · April 12, 2016

I have come across this in types of old travel clocks but I can't remember the names. I found the springs to be very strong and not a very satisfactory way of winding, the spring would rip the barrel from the inside and this would cause the spring to slip more then it should, the other fault was with the click and the teeth because of the strong spring it would cause wear in the teeth and on the click, you would almost have it fully wound and at the last turn slip right back and nearly take your hand off. Never seen it in a pocket watch.