It's not a tourbillon..... What is it?

[Dave Berghold]

This one walked into my shop today. At fist I was excited... then I realized.... it's not a tourbillon. The carriage is fixed to the front plate with two screws. Any thoughts?

 

[Watchfixer]

Could that balance's wind effect more contained for better isoichisom?

Cheers, Watchfixer

 

[Jeff Hess]

" a patented concave rack and pinion micrometric regulator, special tourbillon-like cage for beat adjustment."

 

[Jeff Hess]

http://catalog.antiquorum.com/catalog.html?action=load&lotid=129&auctionid=40

 

[kurtnz]

Here is the patent description

http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=824466A&KC=A&FT=D&ND=4&date=19060626&DB=EPODOC&locale=en_EP

 

[Jerry Treiman]

These are the discoveries that make watch collecting so much fun! Brun also invented a shock absorber mechanism that was used exclusively on watch movements imported, cased and distributed by the Depollier Watch Co.

 

[Dave Berghold]

Thanks you guys..... You never know what's going to walk in the door.... or what you guys offer for information. For this I thank you!