Singer 281-30 - MACHINE OVERVIEW AND FEATURES; General Features; Class 281 Machine Varieties

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
DESCRIPTION
OF
MACHINES
Machines
of
Class
281-
ore
high
speed,
single
needle,
lockstitch
machines
designed
for
sewing
ma-
terials
ranging
from
light
weight
to
heavy
weight.
Among
the
varieties
covered
in
this
manual
are
puller-feed
and
needle-feed
machines,
top-gripper
machines
and
machines
that
perform
simultaneous
trimming
and
stitching.
Al I
of
these
machines
produce
outstanding
straight
line
stitching
in a
wide
range
of
wash-and-wear,
syn·
~thetic
and
natural
fabrics.
General
Features
Federal
stitch
type
301.
Balanced,
air
cooled,
rotating
hook.
Horizontal
OXI
S,
Lint
wiper
keeps
lint
and
abrasive
matter
from
ac-
cumulating
on
hook.
Drop
feed
consists
of
pendent
link
feed
with
feed
leveling
hinge
pin.
Pendant
link
feed
mechanism
maintains
longer
feed-
ing
cycle.
Three
plain
superfinished
bearings
support
the
arm
shaft.
Fully
automatic
lubricating
system
with
oil
flow
window
in
direct
view
of
operator.
Knee
lifter
mechanism
integral
with
machine
base
and
oil
reservoir.
Independent
light
fixture
mount.
Improved
needle
thread
guard
and
other
thread
hand-
ling
ports.
Disc
tension.
Machinepulley
147139
for
3/8
inch
V-belt.
Space
at
right
of
needle,
11
inches.
Machine
Varieties
Machine
281-5,
Vertical
Trimmer
Medium
weight
and
heavy
weight
fabrics.
Needle
bar
stroke,
l-13./64
inches
Presser
bar
lift,
5/16
inch.
Knife
bar
stroke,
5-
1
16
inch.
Maximum
stitch
length,
with
regular
fittings,
5-1/2
stitches
per
inch.
Needle,
Catalog
1515
(l6x95).
Bed-raising
plate
sets
flush
with
top
of
throat
plate.
Regularly
fitted
to
trim
1/8
inch
from
line
of
stitch-
ing.
Extra
cutting
bar
and
presser
foot
supplied
for
3/16
inch.
When
specified
on
order,
machines
can
be
fitted
for
1/16,
3/32,
5/32,
3
1
16
or
l/4
inch
trim
margin.
Extra
cutting
bar
and
presser
foot
furnished
in
each
instance
will
be
next
size
larger
than
that
ordered.
When
1/4
inch
(widest
trim
morg in)
is
requested,
two
sets
of
this
size
will
be
supplied
with
machine.
Speed,
5000
stitches
per
minute.
Machine
281-6,
Top
Gripper
Collar
and
cuff
operations
on
light
weight
to
medium
weight
fabrics.
Top
driven
gripper
feed.
Top
feed
intermittently
driven
by I
inkage
actuated
through
counter
shaft.
Countershaft
driven
by
eccentric
on
arm
shaft.
Eccentric
adjustable
to
obtain
optimum
relationship
between
top
and
bottom
feed.
Top
feed
designed
to
grip
fabric
at
some
moment
that
bottom
feed
rises
to
make
contact
and
to
travel
with
bottom
feed
during
its
entire
front
to
rear
feeding
motion.
Top
feed·
then
returns
(in
raised
position
above
ma-
terial)
to
beginning
of
next
grip-feeding
movement.
Needle
bar
stroke,
1-3/16
inches.
Presser
bar
lift,
3/16
inch.
Maximum
stitch
length,
with
regular
fittings,
5-1/2
stitches
per
inch.
Needle,
Catalog
1955
Sp.?ed,
5000
stitches
per
minute.
3