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Патент USA US3060687

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WATCH WINDING SYSTEM WITH WATERTIGHT CROWN
Filed April 7, 1960
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United States Patent 0 ” ice
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3,060,677
WATCH WINDING SYSTEM WITH WATERTIGHT
CROWN
John Simon, Tramelan, Switzerland
Filed Apr. 7, 1960, Ser. No. 20,620
Claims priority, application Switzerland Sept. 28, 1959
2 Claims. (Cl. 58-90)
3,060,677
Patented Oct. 30, 1962
mediate said inner annular projection and said crown
for establishing a watertight seal therebetween; and a cap
having a depending peripheral ?ange interiorly tapped
complementary to the externally threaded outer annular
projection for engaging therewith in a ?rst of two cap
positions relative to said crown, said cap enclosing said
axially projecting crown and said outer annular projec
tion for protecting said annular packing in said ?rst of
two cap positions, and said cap de?ning an annular recess
The object of the present invention is to provide a
winding system, for winding and setting the hands of a 10 oppositely disposed from said depending peripheral ?ange,
said recess having coupling means extending comple
watch having a water-tight crown, and a cap operable to
mentary to said coupling means on said crown and adapt
a Watch carrying position for protecting the crown and
ed to engage therewith in a second of said two cap posi
to a watch winding position for winding and setting the
tions when said cap is reversed to enclose only said an
hands of a watch.
The enclosed drawing shows an example of the object 15 nular crown axially projecting beyond said outer an
nular projection whereby said smaller crown is engaged
of the present invention.
by said complementary coupling means for rotation by
.FIG. 1 shows a cross section of a watch winding system
said larger cap which is easily rotatable manually.
arranged in the carrying position.
‘FIG. 2 is a cross section similar to FIG. 1 having the
2. In combination with a watch case including a bezel
system arranged in the winding.
The watch winding system shown in FIGS. 1 and 2
20 and band unit having concentric inner and outer annular
propections with said outer projection being externally
threaded, and a winding stem, having a winding end, ro
tatably mounted in said bezel and band unit, watertight
concentric inner and outer annular projections 1a and
control means for rotating said stern comprising: a crown
14 respectively, these elements having been machined out
of a single part. The annular projection 14 has an ex 25 rigidly secured to said Winding end of the winding stem,
said crown being radially too small to easily rotate by
terior thread 15 on which a cap 16 can be removably
hand, said crown extending radially intermediate said
screwed. The winding system comprises a crown 18
concentric inner and outer annular projections and pro
rigidly secured to the winding stem .13 and mounted on
jecting axially therebeyond and having longitudinal cor
the circular projection 1a with an annular elastic pack
ing ?xed intermediate the crown 18 and the projection 1a. 30 rugations circumferentially spaced around its peripheral
surface; an annular packing mounted intermediate said
This crown 18 ?ts between the circular projections 1a
inner annular projection and said crown for establishing
and 14 and has de?ned on its outer circumference adja
a watertight seal therebetween; and a cap having a depend
cent the exteriorly threaded part of projection 14 longi
peripheral ?ange interiorly tapped complementary to the
tudinal regularly spaced ?utes 19; the cap 16 has on its
has a bezel-and-band unit 2 with a band 12 ending in
upper face a recess 20, the inner circumference of which 35 externally threaded outer annular projection for engaging
therewith in a ?rst of two cap positions relative to said
has the same diameter as the outer circumference of the
crown, said cap enclosing said axially projecting crown
and said outer annular projection for protecting said an
nular packing in said ?rst of two cap positions, and said
FIG. 1 shows the annular projection 14 with the
screwed-on cap 16. The cap protects crown 18 and its 40 cap de?ning an annular recess oppositely disposed from
crown and longitudinal ?utes 21 complementary to ?utes
19.
packing against shocks, moisture and foreign particles.
said depending peripheral ?ange, said recess having lon
To rewind the watch or to set the hands, cap 16 is un
screwed, turned over and its ?utes 21 complementarily
complementary to said longitudinal corrugations on said
gitudinal corrugations extending around its periphery
crown and adapted to engage therewith in a second of
Thus the cap crown 18 and stem 13 can thereby be 45 said two cap positions when said cap is reversed to en
close only said annular crown axially projecting beyond
rotated in both directions. It is possible to use a crown
said outer annular projection whereby said smaller crown
18 of smaller diameter than usual and to give the cap 16
engaged with those of the crown (FIG. 2).
is engaged by said complementary coupling means for ro
tation by said larger cap which is easily rotatable manu
the dimensions of a standard crown.
Although the invention has been described with a cer
tain degree of particularity, it is understood that the pres 50 ally.
ent disclosure has been made only by way of example
References Cited in the ?le of this patent
and that numerous changes in the details of construction
and the combination and arrangement of parts may be
UNITED STATES PATENTS
resorted to without departing from the spirit and the
607,526
Schrader ____________ __ July 19, 1898
55
scope of the invention as hereinafter claimed.
969,680
Worrell ______________ __ Sept. 6, 1.910
What I claim is:
1,135,573
Forsman ____________ .._ Apr. 13, 1915
1. In combination with a watch case including a bezel
1,802,080
Jandoc ______________ .._ Apr. 21, 1931
2,765,835
Pavkov _______________ __ Oct. 9, 1956
162,510
190,466
Switzerland __________ ..- Sept. 16, 1933
Switzerland __________ __ Sept. 16, 1937
rigidly secured to said winding end of the winding stem,
said crown being radially too small to easily rotate by
hand and having coupling means extending therefrom, 65
206,761
Switzerland __________ .._ Nov. 16, 1939
227,190
Switzerland __________ __ Aug. 16, 1943
229,461
Switzerland ___________ __ Feb. 1, 1944
said crown extending radially intermediate said concen
242,389
246,727
772,940
Switzerland __________ __ Sept. 16, 1946
Switzerland ___________ __ Oct. 16, 1947
Great Britain _________ __ Apr. 17, 1957
and band unit having concentric inner and outer annular
projections with said outer projection being externally
threaded, and a winding stem, having a winding end, ro
tatably mounted in said bezel and band unit, watertight
60
control means for rotating said stem comprising: a crown
tric inner and outer annular projections and projecting
axially therebeyond; an annular packing mounted inter
FOREIGN PATENTS
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