" Oyster " is the meaning of Oyster case is also a way to prevent
moisture from entering the case of the crown seal technology , the use of
springs and spiral tube first substantive prevent water vapor from the crown
enters the case .
" Oyster " is the Oyster case meaning. Oyster case the sources from
October 30, 1925 Speaking of , was in La Chaux de Fonds , the German craftsman
Paul Penegaux and Georges Peret invented a crown patent ( patent code: 114948 )
, which is a way to prevent moisture from entering the case of the crown seal
technology , the use of springs and spiral tube first substantive prevent water
vapor from the crown enters the case .
Later, Mr Rolex founder Hans transferred to convince them of the
patent and patent applications originally in Switzerland to re-apply in the UK ,
using the name of Hans , patent No. 260,554 . The reason since " Oyster " the
name, because Hans in an oyster dinner , open a lid when accidentally got the
inspiration . July 29, 1926 , he registered the name in Switzerland , two months
later in London were registered . February 28, 1927 , Hans was randomly as
Oyster registered names of four different languages , namely Huitre ( French
), Auster ( German ), Ostica ( Italian ) and Ostra ( Spanish ) .
Oyster case is composed of a four-part structure , the frame is
octagonal , which set with a cylindrical rotary screw barrel , on the circle and
the back cover is the way by rotating the locking screw and rotary drum would
like to link this then spin died in octagonal frame on the box and on the inside
back cover of each of the two seals made of soft metal to increase the tightness
of the crown and the case is connected through another small screw lock cylinder
and connections , two lugs are welded on a metal wire, used to install a metal
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