Tab Rack Plate
FIGURE
99.
Tab
Rack
Plate
NOTE: The following relationships
are
affected
by the
position of the escapement
bracket
-
tab
lever
trigger
to
tab
torque
bar,
tab lever pawl
to
tab
rack,
tab
lever
to
escapement and backspace pawls,
tab
lever
trigger
to
tab
overthrow
stop,
escapement
and
backspace
pawls
to
escapement
torque
bar,
escapement torque bar to pawl
pivot
stud,
and escapement torque bar to
tab
latch.
Each of these relationships must be
checked
and
read-
justed
if
necessary
after
any adjustment
of
the
escape-
ment
bracket.
2.
Escapement Torque
Bar
Stop
a.
b.
Late - rhe torque bar stop
located
at
the
right
end
of
the
torque bar shou I d be ad justed for a rest
posi-
tion
clearance
of .008" to .010"
between
the
tor-
que bar and
the
lug on
the
escapement
pawl (Fig.
100).
FIGURE
-100. Torque
Bar
Stop
Early -
Form
the
torque
bar
stop
located
at
the
left
end
of
the
torque bar
so
that
a
clearance
of
.002"
to .006" exists between
the
torque bar and
the
lug
on
the
escapement pawl
(Fig.
101).
The
escapement cam used with
the
new style
es-
capement mechanism provi des
greater
available
trave
I for a
II
escapement parts;
therefore
more
clearance
is permissible and
desirable
between
the
torque bar and
the
escapement pawl
lug.
CAUTION: Make
certain
that
the escapement
trigger does not prevent
the
escapement torque bar
from
resting against the stop when making
the
torque
bar
stop
adjustment.
Also,
check
the
pawl mount-
ing stud
and,
on long
carriage
machines,
the
torque·
bar back
stop.
Neither
one
of
these shou
Id
be
touching
the
torque bar when
the
stop adjustment
is
being
made.
-......
__
-..,..
Form Stop
To
Obtain
Clearance
_-----Torque
Bar
FIGURE
101.
Torque
Bar
Stop
3.
Pawl Mounting Stud - Rotate
the
pawl mounting stud so
that
it
clears
the
escapement torque bar
by
.001"
at
the
closest point along
the
writing line
(Fig.
102)
Keep
the
high part of
the
eccentric
toward
the
left so
that
the
force of the torque bar
wi
II
tend
to
tighten
the
stud
in-
stead
of
loosen
it.
4.
. Torque
Bar
~!----.~----~~
Stud
FIGURE
102.
Pawl Mounting Stud Adjustment
Tor1ue
Bar
Back Stop - Adjust the back stop forward or
bac
on its mounting stud
so
that
there
is a .001"
to
.005"
clearance
with
the
torque bar
(Fig.
103).
FIGURE
103. Torque
Bar
Backstop
5.
Pivot Pin Eccentric (found on
early
level machines only)
The
eccentric
collar
should be
adjusted
with
the
high
point up so
that
it
just
touches
the
operational
latch
bracket
(Fig.
104).
This
prevents
the
pivot pin from
bowing during a print escapement
operation.
The
eccentric
should also
be
adjusted
laterally
on the
pivot pin so
that
the
end play
of
t.he pivot pin
wi
II
be
.002" to
.005".
2-32.1
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