Timex 33 - Date Ring Indexing Principle; Day Dial Indexing Principle

DATE
CLICK
SPRING
33.4 .
Disassembly of Movement (model 33)
DATE
RING
CUT OUT AT
CENTER POST
PRINCIPLE OF OPERATION
The illustrations at the left show the
functional parts
of the Day and
Date mechanism.
DATE RING INDEXING
A
tab on the underside of the Date
Wheel engages the Date Lever and
moves the Date Lever
tab backward
one tooth on the Date
Ring . At a
predetermined time (about mid-
night) the date lever
is released
and
moves the date ring forward
one space.
The Date Click Spring
engages the Date
Ring to prevent
backward motion when the Date
Lever
is being moved.
DAY DIAL INDEXING
A
tab on the upper side of the
Date Wheel engages the Day Dial
Pinion. Rotating the
Day Dial Pinion
moves the Day Dial
forward one
position
at about l o'clock in the
morning.
The Day Detent Spring
positions, the
Day Dial.