IBM 77 User manual

IBM CUSTOMER ENGINEERING
REFERENCE
UAL
COLLATOR
TYPE
CONTENTS
Page
ADJUSTMENTS
FeedHoppers . . . . . . . . . . . . . . . . . . .
Feed Knives . . . . . . . ............
FeedKnifeGuides . . . . . . . . . . . .
Card Guides . . . . . . . . . . . . . . .
FeedRolls. .-. . rn . . . . . . . . .
Brushes . . . . . . . . . rn . . . rn . . .
ChuteBlades . . . . . . . . . . . . . . .
Pocket Selection Magnets . . . . . . . . . . .
I
Primary and Secondary Clutches . . . . . . .
Eject Clutch Assembly . . . . . . . . . . .
Selector and SequenceUnit . . rn . . . .. . . . .
Circuit Breakers . . . . . . . . . . . . . .
LUBRICATION . . . . . . . . . . . . . .
Copyright 1947, 195 1
INTERNATIONAL BUSINESS MACHINES CORPORATION
New York, New York
Printed in U.S.A.
Form
22-3780-2

COLLATOR, TYPE 77
ADJUSTMENTS
Feed Hoppers
Position the front and rear hopper side plates so the holes in the card are
aligned with the brushes and there is a
.005" to .008" clearance over the length
of the cards.
Position the hopper posts
by adding or removing shims to obtain a .005" to
.008" clearance over the width of the cards.
Feed Knives
The feed knife piv0.t screws should be adjusted so the feed knives travel
.020" to .040" beyofid the right or "12" edge of the card. Be sure the feed knives
are square with the first set of feed rolls.
Feed Knife Guides
Adjust the feed knife guides for rninimum sideplay without causing any
binds.
Card Guides
Card guides are set for .020" clearance between the guides. The ends of
the guides should clear the contact rolls by not less than
.005".
r Feed Rolls
Adjust all floating feed rolls for even tension over the entire length. Primary
and secondary rolls are equipped with adjustable plungers; remaining rolls are
equipped with pull springs.
Brushes
The brush unit assemblies should be checked for a rninimum end-shake
between the side frames at the pivot rod.
Use brush setting jig 454090 to set the brushes for a
11/8 " projection from
the brush block tothe toe of the brush; this should provide a
'/8 " projection above
the card line. If necessary, holes for the brush holder locating block may be
elongated to secure a
'748 I' projection. Use brush adjusting glass 450388 to position
the brushes using scribed line farthest from the 90" bend.
Position the brush separator rolls so the distance from the inside of the
front side frame to the front edge of the
#1 brush groove in the separator roll is
5/s ". This may be obtained by driving the bronze bearings in the separator roll
bearing brackets in or out. Align the brushes to the middle of
the brush separator
roll slots
by adjusting the brush block lateral aligning screws.
For the earlier machines not equipped with aligning screws, the adjustment
is obtained by filing one end of the brush block and placing shims between the
other end of the brush block and the side frame. In either case, it will be neces-
sary to align individual brushes with the three-group brush bending tool.
Shift the hopper side plates so that one set of brushes tracks through the
center of the hole in card. If necessary to re-align other set of brushes, be sure
the brush separator roll is adjusted along with the brush block assembly.
Rotate the picker knife cam on its shaft to cause the primary brushes to
make through the hole in the card not laterthan
3" before the corresponding line
of the index and break not earlier than
12 " after the line of index. Repeat for
secondary brushes.
To obtain the correct timing for primary sequence brushes,
adjust the brush block assembly. It is suggested that
a dynamic timer be used
when timing the brushes to obtain the best possible condition. Check columns at
both ends
of card using 1, 5 and 9 time.
Chute Blades
Chute blades should be shaped to provide sufficient tensior. to cause the
blade to follow the select shoe. Form the blades so the tips of the secondary blades
are
1 '1 6" above the card line and the tip of the primary blade is 1 / 16" below
the card line when the select shoe is latched in normal positiori. When the select
shoe is unlatched, tips of the secondary blades should be
1 / 16" below the card
line and the primary blade
1 46'' above the card line,

REFERENCE MANUAL 77 COLLATOR 3
Pocket Selection Magnets
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L:
1. Adjust this screw so
shoulder stops armature for
.0 15 I' unlatching clearance.
This should provide
.003 'I
4
to .0 12 If clearance between
armature and core.
2. Adjust these backstop
screws so that select shoe
latch projects
.005 " beyond
thickness
of armature.
3. Loosen mounting screws
and move magnet assembly
up or down toprovide .0 10
Y
to .020 I' relatching clear-
Primary and Secondary Clutches
1. Set adjusting screw
.010" to .015" unlatching
clearance. The pawl must
not trip later
than 220".

4 COLLATOR 77 CUSTOMER ENGINEERING
I \ 9. Position armature
horizontally for .005
'I to
.008 " armaturerelatch clear-
1-1 ance when in extreme
u
cammed position.
verti-
cally for .02OV to .02511
overlap with magnet de-
I
energized.
mounting screws and position magnet verti-
.008 I' unlatching clearance and .003
clearance between armatureand core nearer pivot point.
This adjustment should result in .02511air
gap between
the armature and core farther from thepivot point with
I4'
armature in de-energized position.
5. Adjust knockoff screw
-for .010" to ,012" clear-
ance with armature in
ex-
. .
H \ 0 1 treme cammed position.
i. Peen or stone
". 003 I' clearance.
-655ff
keeper for

REFERENCE MANUAL
--
77 COLLATOR 5
Eject Clutch Assembly
The eject clutch one-tooth ratchet is timed to engage the pawl at 235' +2'.
The adjustments are as follows:
and
.call
y
ad-
for
3. Loosen these screws and
hift magnet coil assembly
r .030 clearance when de-
energized and .003 I' clear-
ance when energized.
This should pro-
vide an unlatching
clearance of .008"
to .012".
w w
DE-ENERGIZED ENERGIZED

6 COLLATOR 77 CUSTOMER ENGINEERING
4. Peen or stone keeper for
.002 to .003 clearance.
.00311 to .005" clearance
Magnet Armature Knockoff-
Selector and Sequence Unit
for
.
1 . Form individual armatures for .003
to .00511 clearance between armature and
/ 111 11 I core nearer pivot point when armature
is attracted.
2. Locate magnet assembly mounting
brackets to provide
,004" to .OIO1' un-
latching clearance.
clearance between knockoff and armature
on restoring magnet
when knockoff is on,
high dwell of knockoff cam.

REFERENCE MANUAL 77 COLLATOR 7
5. Moveindividualmagnets
to front or rear to provide
.008 " to ,012 I1 clearance be-
tween stop pawls and setup
ratchetteethwithstoppawls
latched on armature.
This should result in a
relatching clearance
of
.O1Oll to .01411
6. To time the unit to the machine: Turn the restoring
bail adjusting screws so they project through the bail
approximately
&'I at the point where the screw bears
against the cam follower. Set unit on support bars. In-
stall holding screws and turn them in just far enough to
hold unit without meshing gears. Set the machine at
8
(18") on the index. Trip the restoring magnet armature
and turn the unit drive gear clockwise until the stop
pawls overlap the
9 tooth of the setup ratchets approxi-
mately
.030 I' to .040". Be surethe ratchets aretravelling
from the
9 toward the 0 position. Mesh the unit gear
with the continuously running shaft gear and install
the two holding screws.
. -
7. The outer restoring bail adjust-
ing screws are accessible with the
unit on the machine and should
now be adjusted for an even over-
lap of
.03011 to .04011 of the stop
pawls tothe setup ratchet teeth ct
a line on the index. (Complete
adjustments
8 and 9, then perform
adjustment
10 on the next page.)

8 COLLATOR 77 CUSTOMER ENGINEERING
8. Position right-hand unit adjusting
.002 " lash of the drive gears.
,/; >- = >: .
Tighten right-hand support screw. Ad-
just left-hand screw until it just touches
support bar and tighten support screw.
This is to prevent warping the unit.
I"
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/.
4
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-- -
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9. Remove theunit from themachine and
adjust the lower restoring bail adjusting
screws as in paragraph
6 above, using the
upper half of the unit as a guide. Check
by tripping stop pawls
1 and 16, upper
and lower, and noting that they drop
into the setup ratchet teeth at the same
time on the restoring part of the cycle.
Reinstall the unit on the machine.
10. Adjust restoring latch bail pawl ec-
centric pivot for
.024 " to .032 " clearance
to restoring magnet pawl. (see large
illustration, page
7).
Check for at least
\ .010" clearance of restoring bail to setup
ratchets
when restoring pawl is against
its latch.
\ // \ 11. When the restoring bails are resting
\ //-\ against the cam followerson thelow dwell
of the cam, adjust the armature knockoff
bail eccentric adjusting studs so that the
armatures will have
.002 If to .006 I' move-
ment. Both sides of the unit should be
cleared to zero before starting to check
this adjustment. Check one side of the
unit at
a time by turning theymachine by
hand and tripping all stop pawls. This
provides the greatest load on therestoring
bail spring.
U
12. Oil groove in setup ratchet shaft .should be 45' off center to
prevent loose
fit of differential guide plate on shaft.

REFERENCE MANUAL
.. . -- - .- - - - - -. - - - - - 77 COLLATOR 9
Contact Assembly
1. Set the adjustment bushings for 19,i64"
clearance between mounting pads on side
frames and outer surface of contact mount-
ing bar. Adjust any one bushing to remove
any rock.
2. With ones in lower section of unit, and
upper section cleared to zero, adjust lower
N/C contact support straps until center
straps come against cam lobes and
N/C
contacts open .001" to .003".
3. Clear lower reading and put ones in
upper side of unit. Adjust upper
N'C con-
tact support straps until center straps come
against cam lobes and
N~!C contacts open
.OO 1" to .003".
4. With both sides of unit cleared to zero,
back out adjustment bushings evenly to
bring center straps as close as possible to
cain lobes without exerting pressure on the
cams.
5. Remove contact unit and place hori-
OPEN
01"-.
zontal with N,/'c straps up. Adjust N,'O
strap tension for 15 to 25 grams tension
against support. Use contact bending tool as
a weight tocheck adjustment. It should just
move
N/'O strap away from its support.
6. With contact unit horizontal and N/C
straps up, adjust center strap tension so it
just pulls away from
N/C contact with
weight of contact bending tool.
N/C strap
NORMALLY OPEN 1 #-
CONTACT JUST MOVED
FROM SUPPORT STRAP
should have just a perceptible rise from its
By WEIGHT OF TOOL
RUBBER BAND
.CONTACT BENDING
TOOL
support under tension of center strap.

10 COLLATOR 77
_ -
- . _ _- .-
-
P --
CUSTOMER ENGINEERING
7. Wire test light as shown using a neon bulb. Adjust each contact position by
bending
N o support strap until light just blinks out when center strap goes from
N 'c to N 'o strap. Obtain smallest possible center strap motion with light out.
8. Remove jumpers and test light leads and recheck for no strap pressure on
cam lobes with unit at zero reading. To check for this condition have machine idle
under power and trip one side of each unit at
a time. If there is an appreciable
movement of the center strap on the side of the unit where the contacts are not
transferring, it is a sign of strap pressure on cam lobes at zero reading. When this
check indicates an incorrect adjustment, the contacts for that position should be
adjusted individually on the machine
by bending the N 'C support strap until
contact pressure is relieved with zero reading in both sides.

REFERENCE MANUAL
-P~---
77 COLLATOR 11
9. Check visually for a minimum of .020" air gap between N/C points with
zeroes in one side of the unit and ones in the other. Reverse zero, one readings
and check other side.
If this adjustment cannot be obtained, it is an indication
of lost motion due to wear of the linkage.
A check should be made of the parts
affected in any position where this adjustment cannot be obtained and the worn
parts replaced.
Circuit Breakers
1. Clean points.
2. Loosen screws A and align contact points so that full contact area is used.
3. Loosen locknut C and adjust screw B for correct air gap. There are 40
threads per inch on contact screw, giving
.025" movement for each turn. Air gap of
CB's 1,
2, 3 and 4 is .025 ". On all others the air gap may vary from .012 " to .040 "
to obtain the correct contact duration.
4. Form at E so that contact surfaces meet squarely.
5. Loosen screws D and turn cam toobtain proper timing as given on electrical
timing chart supplied with each machine.
LUBRICATION
The following list indicates the lubricants to be used at various points on the
machine.
IBM 6
Feed knife slides
Select magnet armature pivot
Relay armature pivot
Contact roll oil wells
Clutch latch lever pivots
CB cam lever pivots
Selector unit Pawl pivots
Setup ratchet pivot shaft oil well clutch knockoff lever pivots
and felt wick
Stop pawl pivots High speed contact rolls
Studs on differential link and guide
plate (follow with No.
i7)
Restoring magnet knockoff cam fol-
lower rollers (follow with No.
17)

12 COLLATOR 77
CUSTOMER ENGINEERING
IBM 9
Motor and generator bearings
Control panel frame pivot points
All oilite bearings
Feed roll bearings
IBM 77
All feed roll drive gears and idlers
Variable speed cam
Drive pulley bearing
Feed knife cam follower guide and
roller
CB cam rollers
Selector unit cams
Selector unit restoring bail spring stud
Thrust bearings on endsof primary and
secondary feed shafts
Feed roll pressure shoes
Feed roll bearing pivots in brush as-
sembly side plates
Remove screw in 1st lower CR
(hollow) feed roll and lubricate eject
clutch drive shaft
Clutch knockoff cam follower rollers
Restoring magnet knockoff cam fol-
lowers
Sentinel switch points
Differential link studs
Thin film on: all linen dilecto cams and
gears; all primary and secondary
commutators;linen dilecto card levers
at the point where they operate
against the contact strap
Clutch magnet armature at latching
point
Repacking matched bearings on feed
rolls
i.. . .
I