Willcox & Gibbs 500/I Instruction Manual

INSTRUCTION
&
PARTS
CATALOG
WILLCOX
&
GIBBS
500/I &
500/Il
OVERLOCKS
WILLCOX
8’
gIBrn!’!!°
1040 AVENUE OF THE
AMERICAS
NEW
YORK.
NEW
YORK
10018
(212)
565-7900
r
-
:
—1
From the library of: Superior Sewing Machine & Supply LLC

TABLE
OF
CONTENTS
OPERATORS
INSTRUCTION
MECHANICS’ INSTRUCTION
PAG
E
Introduction
How
to
clean
your
machine
Driving
motor,
pulley
and
belting
Lubrication
Threading
your
machine
Regulating
thread
tension
Pressure
of
presser
foot
Needles
Regulating
seam
width
Replacing
the
upper
and
lower
knives
Regulating
stitch
length
Setting
the
welt
guide
Setting
the
edge
guide
4
4
4-5
4-5
6-7
6-7
8-9
8-9
8-9
8-9
10-11
10-1
1
10-11
Alignment
of
needle
plate
to
feed
Feed
adjustment
Adjusting needle
arm
height
Left
looper
adjustment
Adjusting
needle
guards
Right
looper
adjustment
Presser
arm
alignment
Presser
foot
adjustment
12-13
12-13
12-13
14-15
14-15
16-17
18-19
Presser
foot
lift
adjustment
Timing
gauges
Millimeter-inch
fraction
& decimal
conversion
chart
18-19
18-19
20
21
1
—2—
From the library of: Superior Sewing Machine & Supply LLC

PARTS
LIST
SECTION
PAGE
Mdclii
iC
bed
[raine
22-23
Ma
n Irarne and
miscellaneous
covers 24-25
Crankshalt
niechanisrn
26-27
Needle drive
mechanism
28-29
Right
looper
drive
mechanism
for
500/I
30-31
Right
looper drive
mechanism
for
500/Il
32-33
Left
looper
drive
mechanism 34-35
Main
and
diflerential
feed
mechanism
36-37
Upper and
lower knife
mechanism
38-39
Presser
foot
and
lifting
mechanism
40-41
(1)
Pump
lubricating
mechanism
42-43
(2)
Pump
lubricating mechanism 44-45
Plain
feed
mechanism
503/I
&
11-4,
503/I
&
11-8
46-47
Attachments
48-49
Chain
cutter
models
KSR-570,
KSR-571
and
KSR-572
50-51
Suction
device
model VSA-200
for chain
cutter
52-53
Mounting
accessories
54-55
Accessories
56-57
Thread
stand
58-59
ORGANIZATION CHARTS
504/1-5.
504/1-45. 504/1-43
60-61
504/1-47. 514/1-41. 514/1-42
503/1-4. 503/1-8.
503/1-25 62-63
504/I-i.
504/I-9-Z7.
504/1-10
504/11-5.
504/11-45. 504/11-43
64-65
504/11-47. 514/11-41. 514/11-42
503/I
1-4.
503/11-8.
503/11-25
66-67
Additional organization
chart
68
NUMERICAL
INDEX
PARTS
Numerical
index of new
product
code numbers
with
old
numbers
69-73
Numerical
index of
old
numbers
with
new
product
code
numbers
74-78
—3—
From the library of: Superior Sewing Machine & Supply LLC

OPERATORS’
INSTRUCTION
INTRODUCTION
You
are
aliou
t
to
opera
Ic
an overlock
ii
ach
no
designed
by
the
people
who
first
introd
iced
the
overlock.
In
this macli
me
you
will
[mt
Lu
I
the
features
to
assist
you,
as
the
operator,
to
enjoy
the
easier
handling
and
[aster
sewing
that
wi
I
help
you
increase
your
production.
It
is
easy
to
thread,
feeds
smoothly,
has
automatic
lubrication,
and
ru
is
quietly.
The
Willcox
&
Gibbs
class
500/I
& II
machines
are
the
machines known
as
‘‘TH
E
OPERATOR’S
FAVORITES”.
HOW
TO
CLEAN
YOUR
MACHINE
Clean
the
machine
is
a
simple
but
important
operation.
It
is
riot
necessary
to
remove any
parts.
Merely
release
the
foot
and swing
it
out
to
the left.
Swing
out the
covers
and
remove
all
the
collected
lint
from
around
the
loopers,
feed
slots,
and
under
the
needle plate.
Blow
out
any
loose
lint
or
use a
lint
brush.
Replace covers
and
return
foot
to the
sewing
position.
DRIVING
MOTOR,
PULLEY
AND
BELTING
Table
1
It
must
be
used
with
the
motor
and
belting
of
the
following
specifications
for
individual
use.
1.
Driving
motor
of
3
phases,
2
poles
arid
400
watts
(1/2HP)
is
recommended
to
this
machine.
2.
Motor
speed
is
approximately
2,900
r.p.m. for
50
Hz
or
3,500
r.p.m.
for
60
Hz.
3. Belting
used
should
be
type
M
of V-belt.
4.
The
relation between machine
speed
and
motor
pulley
diameter
is
determined
by Table
1.
LUBRICATION
Table
2
Fig.
1,
2,3
CAUTION:
Oil
was
drained
from
the
machine
when
shipped.
Refill
with
oil
before operating.
The
500/1
& II
features
fully
automatic
lubrication
with
a
concealed forced
air
cooling system.
Oil
is
pressurized
by
a
pump
to
the
internal surfaces
of
the
connections.
A
new
ii
ach
inc
sl
iou
Id
I
rn
run
at
least
[our weeks
Lit
Li
speed
not
to
exceed
5,000
s.p.m.
At the end
of
bLur
weeks,
original
oil
should
he
drained
oLit
arid
replaced.
Operational
speed
alter
four
weeks
run-
in
may
be
7,000
s.p.m.
Operational
speed
is
depending
upon
operation
being
performed
and
ability
of
operator.
Life
time of
machine
depends
on
quality
oil
used.
For
lubricant
for
500/I
&
II,
use oil
as
specified
in
Table
2.
Use
recommended
type
oil
only.
Changing
oil
1. Remove
the
machine
from
its
stand
and
set
it
on
a
table.
2.
Remove
drain
plug
0
and
drain
oil
from
the
machine.
3. Replace
drain
plug
0
and
return
the
machine
to
its
stand.
4. Remove
filler
plug
0.
5.
Pour
fresh
oil
into
reservoir
(700cc
Capacity)
using
funnel
supplied
with accessories,
until
oil
reaches
upper
line
of
gauge
9.
6.
Replace
filler
plug
0.
7.
Run
machine
and
check
oil
circulation
at
oil
splash
sight
window
0.
8.
Oil level
should
be
kept
between two
lines
on
gauge
0.
9. Change
oil
entirely
every
three
months.
OIL
SCREEN
FILTER
Filter
0
should
be
always
kept
clean.
Since
lubri
cation
oil
is
filtered
by
this
and
delivered
to
all
frictional
surfaces,
clogging
of
this
filter
may
cause
lack
of
lubrication
and
accidental
seizure
of
parts.
Check and
clean
filter
0 every
three months,
or
if
necessary,
replace
with
a
new filter
when:
Oil
jet
in
window
0
is
restricted
or
weak,
or oil
contained
foam
or
debris.
Changing
filter
1.
Drain
oil
from
the
machine.
2.
Remove
bolts
0
and
oil
pan
0.
3.
Remove
screws
0
and
filter
0.
4.
Clean
filter
0
with
petrol
and
blow
it
with
low
pressure
air.
5.
Replace
filter
0
and
tighten
screws
0.
6.
Replace
oil
pan
0
and tighten
bolts
0.
7.
Fill
reservoir with
oil
on
a
level
of
upper
line of
gauge
9.
p.
—4—
From the library of: Superior Sewing Machine & Supply LLC

50 Hi
Fig.
L
MACHINE
SPEED
(S.P.M.)
MACHINE
SPEED
(S.
P.M.)
MOTOR
PULLEY DIAMETER
PULLEY
SIZE
INCH
ES
in
U.S.A.
3-3/4 636
4-1/8
641
4-3/8
643
4-1/2
644
4-3/4
646
4-7/8
647
5-1/8
651
5-1/2
654
5-3/4 666
4,600
5,000
5,300
5,500
5,800
6,000
6,300
6,700
7,000
MM
95
105
110
115
120
125
I 130
140
145
60
Hz
MOTOR
PULLEY DIAMETER
MM
INCHES
4,600
80
3-1/8
5,000
85
3-3/8
5,300
90
3-5/8
5,500
95
3-3/4
5,800
100
4
6,000
105
4-1/8
6,300
110
4-3/8
6,700
115
4-1/2
7,000
120
4-3/4
PULLEY
SIZE
in U.S.A.
631
633
635
636
640
641
643
644
646
Fig.2
0
Table
1
Note 1:
Machine
pulley
diameter
is
60mm
(2.36”).
Note
2:
Motor pulley
diameter
should
be
measured
in
its
outer diameter.
Brand
“A”
Brand “B”
(<inematic
100°F
19.01
14.57
Viscosity
—
(centistokes)
210°F
4.04 3.57
Viscosity
I
VI
(A)
130.0
-
147.5
Index
VI
(B)
[
123.5
142.5
Pour
Point
(°
F)
—59.0
—63.5
Load
Carrying
more
than 12
more
than 12
Capacity
(kg/cm 2 )
(170
psi.)
(170
psi.)
Fig.3
—0
/0
Table
2
—5—
From the library of: Superior Sewing Machine & Supply LLC

THREADING
YOUR
MACHINE
Table
3,
4
Fig.
4,
5, 6, 7, 8,
9, 10
REGULATING
THREAD
TENSION
When
a
machine
is
received,
note
that it
has
been
threaded
correctly.
The
simplest
way to
rethreacl
it is
to
tie
the flCW
threads
to
those already
in
the
machine and
pull
the new
threads
through,
making sure
that the
knots
will
go
through
the
looper
eyes
and
needles.
In
case
the machine requires
a
complete
rethreading,
refer
to
Threading
Diagrams
Fig.
4
to
10,
Table 3
and
4.
500/I
Fig.
4,
5, 6, 7,
8
Thread
Right Left
Right
Left
Federal
needle needle
looper looper
stitch
503
Ti
Non Non
T4
504
Ti
Non
T5
T6
512
T3
T2
T7
T8
514
T3 T2
T5
T6
Table 3
The
amount
of tension
required
varies with
type
of
material,
size and
type
of
thread,
etc.
Adjust
individual
thread
tensions
as follows.
To
increase
tension
— Turn
nut
clockwise.
To
decrease tension—
Turn nut
anti-clockwise.
Tension
on thread
should
be
just enough
to
secure
proper
stitch formation.
Normally,
you
should
have more
tension
on the
needle
threads
and
less
tension
on the
looper
threads.
500/Il
Fig.
4,5,9,
10
Thread
Right
Left
Right
I Left
Federal
needle needle
looper
looper
stitch
503
Ti
Non
Non T9
504
Ti
Non
TiO
Tli
V
512
T3 T2
Ti0
Tii
.
—.
514
T3
T2
TiC
Tii
Table
4
Fig.4 Fig.5
T4
Fig.6
/
//V
C
—
6
—
From the library of: Superior Sewing Machine & Supply LLC

Fig.7
T5\
\T,
%-,-,
D
Fig.8
Fig.9
t
Fig.
10
JJ
—7—
From the library of: Superior Sewing Machine & Supply LLC

PRESSURE
OF
PRESSER
FOOT
Fig. 11
Pressure
of
presser
loot
is
requlated
by
means
of
tilunhl)
screw
0.
Pressure
on
presser
foot
should
be
just
enough
to
lend
material
and
obtain
proper
stitch
formation.
Too
much
pressure
may
Spoil
material
and give
it
more
stretch
than
it
needs.
Too
little
pressure
may
cause uneven
feedings or
stitches.
NEEDLES
Fig.
11,
12
Needles
for
500/I
&
II
series
are
specified
in
organization
charts
as
shown
in
pages
60
to
68.
Generally
the size
of
needle
should
be
determined
by
the size
of
thread
or
weight
of
material
to
be
sewn.
Changing
needles
1.
Turn hahdwheel
until needle
drive
arm
0
is
at
its
highest
position.
2. Lift
up lever
0
and
swing
presser
arm
0
to the
left.
3.
Loosen
nut
0
using
socket
wrench
furnished
with
the
machine
and remove
old needle.
4.
Insert
new needle
in
the groove
0
of
clamp
until needle
rests
against
pin
0.
5.
Tighten
nut
0
securely.
6.
Return
arm
0
to
the
sewing
position.
7.
Make
sure needle
descends
in
the
center
of
the
needle
hole
in
needle
plate.
8.
On
two needle machine,
be
sure
to
keep
shim
0
at
the
right
position
or
between
two
needles.
REGULATING
SEAM
WIDTH
Fig.
11,
13
1.
Lift
up
lever
0
and
swing arm
0
to the
left.
2.
Turn
handwheel until
upper
knife
is
at
its
lowest
position.
3. Loosen
screw
0.
Pull
thumb nut
Ij
to the
left
as
far
as
it
will
go
and
lightly
tighten
screw
0.
4.
Loosen
screw
D
and move
holder
®
to the
right
or
left
until
the desired
width
is
obtained,
then tighten
screw
di.
5.
Loosen
screw
0,
then
holder
®
will
return
to
position
by
spring
action.
6.
Tighten
screw
0.
7.
Return
arm
0
to the
sewing
position.
CAUTION:
When
seam
width
is
changed
to
extremely
wide
or
narrow,
to
replace
needle
plate
for larger or
narrower
seam
width
is
recommended.
See organization
charts
as shown
in
pages
60
to
68.
REPLACING
THE
UPPER
AND
LOWER
KNIVES
Fig. 11, 13, 14,
15
UPPER
KNIFE
1.
Lift
up lever
0
and
swing
arm
0
to
the
left.
2.
Loosen
screw
0.
Pull
nut
to
the
left
as
far
as
it
will
go
and
lightly
tighten
screw
0.
3.
Remove
screw
with
socket
wrench or
screwdriver
furnished
with
the
machine.
4.
Withdraw
knife
®
downward.
5.
Replace
with
new
knife
but
do
not tighten
screw
completely.
6.
Turn
handwheel until
upper
knife
is
at
its
lowest
position.
Set
upper
knife
so
that
its
cutting
edge
overlaps
lower
knife
by
0.5-1.0mm
(.020-.039”)
as
shown
in
Fig.
14.
7.
Retighten
screw
securely.
8.
Loosen
screw
0,
then
holder
®
will return
to
position
by
spring
action.
9.
Tighten
screw
0.
10.
Return
arm
0
to the
sewing
position.
LOWER
KNIFE
1.
Lift
up
lever
0
and swing arm
0
to
the
left.
2.
Loosen
screw
0
and
pull
nut
Iii
to
the left
as
far
as
it
will
go
and
lightly
tighten
screw
0.
3.
Loosen
nut
Ij
and
withdraw
knife
downward.
4.
Insert
new
knife
into
the groove of
clamp
stud,
setting
the
blade
so
that
the cutting
edge
is
level
with
the
top of
needle
plate
as
shown
in
Fig.
14.
5.
Tighten
nut
ji’
securely.
6.
Loosen
screw
0,
then
holder
®
will
return
to
position
by
spring
action.
7.
Tighten
screw
0.
8.
Return
arm
0
to the
sewing
position.
Knives
must
be
kept sharp.
Lower
knife
may
be
sharpened
by use
of
a
grinder
while
making
sure
that the
correct
angle
is
maintained
as
shown
in
Fig.
15.
Upper
knife
may
be
sent
to our
distributors
or
return
to
us
for
resharpening
since
it
is
made
from
a
special
tungsten
carbide
alloy
material,
and
must
be
sharpened
by
a
diamond
grinder.
From the library of: Superior Sewing Machine & Supply LLC

LLL
0
0
FigH4
Needle
plak
top
surfa(n
Upper
knife
0.5-
1.0mm
.020 .039”
0
/
0
Lower
knife
0
/
00
Fig.12
/
/
13
Fig.
15
From the library of: Superior Sewing Machine & Supply LLC

REGULATING
STITCH
LENGTH
Fig.
16
SETTING
THE
WELT
GUIDE
Fig.
17
SUtch
length
is
determined
by
the
combination
of
main and
dillerential
feed
eccentrics
to
be
used.
Outer eccentric 0
actuates
main
feed.
Tiller
eccentric
0
actuates
differential
feed.
The
number
stamped
on feed
eccentric
indicates
the
number
of
stitches
per
Inch.
However,
the stitches
made
may
vary
more
or
less
depending
upon the
material.
Welt
guide,
equipped
with models
503/1-25
and
503/11-25,
is
designed
for
blindstitch
welting
or
hemming.
1.
Set
base
0
on
the
machine
with screw
0.
2.
Loosen
screw
0.
3.
Move
guide
by
turning
screw
until
guide
€i
is
correctly
positioned.
4.
Tighten
screw
0
securely.
Selecting
eccentric
When
the stamped
number
of
differential
feed
eccentric
(e.g. =8)
is
smaller
than
that
of
main
feed
eccentric
(e.g. 12),
material
will
tend
to
shrink in
stitching.
When
the stamped
number
of
differential
feed
eccentric
(e.g.
#16)
is larger
than
that
of
main
feed
eccentric
(e.g.
#12),
material
will
tend
to
stretch
in
stitching.
Changing
eccentric
1.
Swing
presser
arm,
cloth plate
and
feed
mechanism
cover
to
the
left.
2.
Remove
nut
0
and
washer
0
from
crankshaft
0.
3.
Screw
extractor,
furnished
with
the
machine,
into
screw
hole
0
of
main
feed
eccentric
O
and
take
it
out.
4.
Screw
extractor
into
screw hole of
differential
feed
eccentric
0
and
take
it out.
5.
Be
sure
to eccentrics
and
mating
parts
are
clean.
Clean
eccentrics
in
oil
to
remove
all
dirt
and
dust deposits
before
placing
in
the
machine.
6.
Face
the
extruded portion
outward
(leftward)
and
insert
differential
feed
eccentric 0
on
the
crankshaft
0
mating
the
eccentric
groove
with
the
crankshaft
key.
Use
extractor.
7.
Face
the
extruded portion
inward
(rightward)
and
insert
main
feed
eccentric
0
in
the
crankshaft
0
mating
the
groove with
the
key.
Use
extractor.
8.
Replace
washer
0
and
nut
0.
9.
Tighten
nut
0
securely.
10.
Replace covers
and
return
arm
to
the
sewing
position.
Feed
eccentrics
supplied
in
the
machine
and
in
the
accessories
are
listed
in
the
organization
charts.
Additional
eccentrics
may
be
ordered
separately.
SETTING
THE EDGE
GUIDE
Fig.
18
Edge
guide,
equipped
with models
503/1-4, 503/1-8,
503/11-4
and 503/11-8,
is
designed
for
regulating
the
width
of material
to
be
trimmed
or
for
edge
guide
when
the
machine
is
operated
without
trimmer.
1.
Set
holder
®
on
the
machine
with
screws
2.
Loosen
screw
3.
Move guide
®
to
the
right
or
left
until proper
position
is
obtained.
4.
Tighten
screw
securely.
—
10
—
From the library of: Superior Sewing Machine & Supply LLC