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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
I
escapement torque bar to pawl
pivot stud, and escapement torque bar to tab latch.
Each of these re lati onshi ps must be checked and read-
justed if necessary after any adjustment of the escape-
ment bracket.
2.
Escapement Torque Bar Stop
a.
b.
Late - fhe torque bar stop located at the ri ght end
of the torque bar should be adjusted for a rest posi-
tion clearance of .
008"
to .
010"
between the tor-
que bar and the lug on the escapement pawl (Fig.
1 00).
.008"
To
.010"
Torque Bar Stop
FIGURE
100.
Torque Bar Stop (New Style)
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 (Fi g.
101).
The escapement cam used with the new style e!'-
capement mechanism provides greater availablt:.
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 should be
touch i ng the torque bar when the stop adj ustment is
being made.
Form Stop To Obtain Clearance
- - - - - - T o r q u e Bar
FIGURE
lOT.
3.
Pawl Mounting Stud - Rotate the pawl mounting stud so
that it clears the escapement torque bar by
.00 I"
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 will tend to tighten the stud in-
stead of loosen it.
Stua
FIGURE
102.
Pawl Mounting Stud Adjustment
4.
Torque Bar Back Stop - Adjust the back stop forward or
back on its mounting stud
<;0
that there is a
.001"
to
2-32
. 005
11
clearance with the torque bar (Fig.
103).
,.,.--
-
/
..........
/
"-
( ~)
//~-~'\
\r
/:001" To .OO5"---IR-
\
~--'\
I
~l0
I
\
\
/
\
\
/
./
./
. /
---
FIG U RE
103.
Torque Bar Backstop
5.
Pivot Pin Eccentric (found on early level machines only)
The eccentric collar should be adjusted with the
higll
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 the pivot pin will
be
.002"
to
.005".
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