Seiko 6138A - Crown Setting Operations; Day and Date Correction; Time Setting

6f
3BA
Setting Mechanism
Ordinary
position
of crown
(main-
spring winding)
The crown
wheel
and
the second
intermediate ratchet wheel
are
caulked on the barrel and train
wheel
bridge. The intermediate rat-
chet wheel
is supported by a
pin
mounted
on
the
plate.
Second
position
of
crown
(day
and
date correction)
l. Clockwise
-
Date
correction
When
turning the crown
to the
right
(clockwise),
the correcting
gear
moves
to the date
dial side
and interlocks
with it. thus
date
is corrected. Force
transmission
is
through crown
+
clutch
wheel
-
setting wheel
+
cor-
recting
g€ar
+
date dial.
2. Counterclockwise
-
Day correc-
tion
When
turning the
crown
to the
left
(counterclockwise),
the
cor-
recting
gear
moves to the day
star with
dial disk
side and
inter-
locks
with the
intermediate
wheel
for
day correction,
and
day is
corrected. Force is trans-
mitted
through crlwn
-
clutclt
wheel
-
setting wheel
+
cor-
recting
gear
+
intermediate
wheel
for
day correction
-
day
star
with
dial
disk.
Third
position
of crown
(setting
time)
The setting
wheel
lever complete
moves
to the minute wheel
side by
action
of the setting lever
with axle,
and the
intermediate
setting wheel
interlocks
with
the minute wheel.
hand is
set
correctly.
Simultaneous-
ly,
motion
of the setting wheel
lever
complete
is
transmitted
to the day-
date
correction
wheel
rocking
lever,
and the cotecting
gear
attains
a
position
where it
interlocks
neither
the date
dial nor intermediate
wheel
for
day correction
by action
of
the
setting
wheel
lever complete
and the
day-date
correction
wheel
rocking
lever.
Crown
wheel
Winding
pinion
Intermediate
ratchet
wheel
Second intermediate
ratchet wheel
Ratchet wheel
(barrell
Fis.21
―
Datedial
Fis.22
(Day
starl
I ntern
for
da
Fis.23
Minute wheel
(
Intermediate
setting wheel)
Setting wheel
lever
complete
Daydate corrector
wheel rocking lever
Fi9.24
-6138A
-
l0-
Intermediate
wheel
for
day
correction