Pfaff 463 User manual

(PFAFFJ 463
Standard High-Speed Sewing Machine
Organized with drop feed
Instructions
R8617
P FAFF AG .KAISERS LA UTERN BRANCH
Industrial Sewing Machine Division
From the library of: Superior Sewing Machine & Supply LLC

PFAFF 463
Standard High-Speed Sewing Machine
Organized with drop feed
Instructions
From the library of: Superior Sewing Machine & Supply LLC

CONTENTS
Foreword
1. Setting Up the Mochine .
2. Mounting the V-Belt
3. Test-Running the Machine .
4. Winding the Bobbin
5. Threading the Needle .
6. Regulating the Stitch Length
7. Lifting the Presser Bar .
8. Regulating the Pressure on the Material
9. Lubrication
Page
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4
5
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11
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Foreword
Thescope of this booklet is confinedto such instructions os are conditioned by
voriotions in the design of the new Pfoff 463 high-speed sewing machine as
compared with previous Pfaff high-speed seamers.
An outstanding feature of the Pfoff 463 is the incorporation of seaied-for-life
ball and needle bearings of the latest design which obviate the use of an
automotic lubrication system.
Another salient feature is the arrangement of the feed driving and feed lifting
eccentrics on the bottom rather than the arm shoft. The bottom shaft is driven
from the arm shaft by a Synchroflex belt and drives the hook shaft by means
of helical gears.
These driving elements are enclosed in an oiltight gear case and are lubricated
by means of an oil-soaked foam rubber sheet. The only part that requires
special lubrication is the sewing hook. Lubrication of this port is accomplished
by means of a reservoir oiling system incorporating acentrifugal switch.
Since the arm shaft is belted to the motor, the machine can be tilted bock
without removing the V-belt.
Additional features of the new high-speed seamer are a novel stitch length
control, separate forward-reverse feed control, built-in bobbin winder and
built-in lifting lever.
Operators will like the modern functional design and the streamlined belt
guard which is attached to the machine arm.
G, M. PFAFF AG
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1. Setting Up the Machine
The Pfaff 463 drop-feed sewing machine, like the other models in the new
line of high-speed seomers, con be set up only on o power table fitted with
the new rubber hinge bracket and cushion set.
The front corners of the bedplate are face-milled on the underside and rest on
matching rubber cushions which are recessed into the tabletop.
At the back, the new-type hinge studs connect the sewing head to the pins in
the two rubber hinge brockets. This mounting prevents the machine from com
ing in contact with the tabletop.
The machine is carefully balanced and causes procticatly no vibration. What
ever vibration there is,will be absorbed by the rubber hinge brackets.
Fia. 1 Re(S42
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2. Mounting the V-Belt
The machines ore shipped with the belt guard removed.
To mount the V-belt, lift the sewing head slightly and place the belt on the
machine and motor pulleys.
Slightly turn out screws ol, a2, a3, and a4, and push the two belt guard
sections together, holding them close to the machine so that the above screws
enter the appropriate slots in the back wall of the belt guard.
Fig. 2 R8608
To tighten the screws again, insert the screwdriver through openings bl, b2,
b3, and b4 (Fig. 2).
Both belt
guard sections ore secured to the vertical portion of the machine arm
by inserting screw d (Fig. 1) through holes b5 and c into screwhole dl and
tightening it securely,
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Fig. 3
RSd-iS
3. Test-Running the Machine
Before you tesf-run the mochine, carefully remove all dirt which may have
accumulated in transit. Use only abrush and acleaning rag for this purpose.
The Pfoff 463 must never be rinsed or cleaned with kerosene because there is
a donger that the cleaning fluid enters the sealed-for-life bearings and dis
solves the greose. For the
same reason, kerosene or gasoline must not be used
for the
regular servicing of the machine.
Never attempt to eliminate hard working of the machine by squirting oil freely
into the bearings which, you believe, may be responsible for this fault. If oil
enters the sealed-for-life bearings, the grease will be thinned
and flung out of
the bearings, thus eliminating permonent lubrication.
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4. Winding the Bobbin
The new high-speed seamer is fitted with a bobbin winder which is incor
porated in the face cover rother than mounted at the balance-wheel end, as
customary. Arranged at a convenient height, it is easy to operate end enables
the operator to wind bobbins
quickly and neatly.
The bobbin winder driving motion emanates from the take-up crank. When the
bobbin winder is engaged, driving crank F at the rear end of spindle 17 is
pushed into the circular path of stud K which engages the crank and in this
way drives the bobbin winder (Fig.3).
The bobbin winder spindle is carried in a self-lubricating sinter-metal bearing
which requires no additional lubrication. To engage the bobbin winder, simply
depress stop latch a located above the bobbin winder spindle (Fig. 5). This
action causes the spindle to move slightly to the right in which position it is
Fig. 4
R 8928
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retained until sufficient thread has been wound on the bobbin. The thread
wound on the bobbin pushes the com up and thereby stops the bobbin winder.
The
amount of thread to be wound on the bobbin can be regulated by loosen
ing screw b and setting cam a higher or lower, as may be required. Set the
cam higher for more thread, or lower, for less thread.
Figs. 4 and 5show how to guide the thread to the bobbin winder.
Place the spool of
thread on spool pin 11 and bobbin 16 on spindle 17. Lead
the
thread from spool 11 up and through the top thread guide of the threod
stand, down to thread guide 12 on the rear arm cover, through thread retainer
13 below thread guide 2, through thread guide 14 and around thread tension
15 to bobbin 16.
T"
PFAFI
Fig. 5 R 8929
To facilitate threading, if is recommended to wind a few clockwise turns on the
bobbin 16 first,
and then to lead the thread around thread tension 15. Depend
ing on the material to be sewn, the
thread should be wound tighter or looser.
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The thread tension is regulated by turning thumb nut 18 back of the tension
discs. Turn the nut counter-clockwise for a tighter tension, or clockwise for a
looser tension.
If the threod should pile up at one end of the bobbin, adjust the position of the
tension stud. The set screw securing this stud in position can be reached from
below.
5. Threading the Needle
Because of the high speed of the seamer the smooth possoge of the thread to
the needle is especially importont.
Lead the thread from spool pin 1 up to the top thread guide of the thread
stand and down to thread guide 2. It is recommended to lead the thread first
through the vertical hole from top to bottom and then through the transverse
hole of the guide, as shown in Fig. 4 and 5, in
order to prevent it from snarl
ing up on the guide and breaking,
Now lead the thread through two or three holes of thread retainer 3, as may
be required, clockwise around and between tension discs 4, through thread
check spring 5, under stock threod regulator 6, through thread guide 7, from
right to left through the hole in take-up lever 8, through thread guides 7 and 9
and from left to right through needle eye 10.
6. Regulating the Stitch Length
The stitch length is regulated by means of stitch length control n (Fig. 6). The
large diameter of this control mokes for an exceedingly fine stitch length
regulation. When control n is turned by one tooth, the
stitch length is increased
by Vfii". The stitch length is indicated on the teeth in millimeters.
Fig. 6 R8607
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In order to ovoid that the stitch length setting will be disturbed while sewing,
stitch length control n has been provided with a locking device in the form of
disc o (Fig. 6). This disc must be pressed back slightly when setting the stitch
length.
Finger-tip control p serves to reverse the direction of feed and is used for bock-
tacking. When lever p is pressed down, the machine sews in reverse, making
stitches of the length set.
When lever p is released, the direction of feed is instantly reversed by spring
actionand the machine resumes forward stitching.
If desired, the machine will be fitted with a small treadle for switching from
forword to backward sewing.
Upon special request, the Pfaff 463 high-speed seamer can be fitted with a
stitch length limiting device for backward sewing if a shorter backward stitch
is desired for backtacking the ends of seams. The length of reverse stitches is
then limited by turning in grub screw Sof crank R on shaft L (Fig. 10).
7. Lifting the Presser Bar
Since the arm standard of the new high-speed seamer has been set closer to
the rear edge of the bed plate, it was possible to enclose the presser bar lifting
mechonism in the machine arm so that it isnot visible on the outside.
To mount the knee lever, push it over the lower end of vertical shaft r under
the tabletop. The lever is held in place by angular bracket s which snaps into
place ofter tronsverse driving pin u has entered the cutouts t in the right-angled
coupling sleeve q (Fig. 7).
When the coupling sleeve is pushed onto the end of the shaft, resilient
bracket s must be compressed to open it slightly.
Motion is transmitted from the vertical shaft to the presser foot by means of a
crank, a connection and a bellcrank lever which raises the presser foot.
A small hond lever Cat the back of the machine serves to lock the presser foot
in its highest position. This lever is flicked to the left to retain the presser foot
after it has been raised by knee action (Fig. 9).
10
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Fig. 7 Attoching the knee lever
R&408
To facilitate the tilting bock of the sewing head without removing the knee
lever completely, the knee lever rock shaft is no longer screwed to the ongulor
sleeve, but rather held in place by a spring-loaded pin. As a result, the knee
lever can be pulled forward off the shaft with a slight jerk.
A new feature of the knee lever is its hinged foam-rubber-podded knee plate
which adapts itself well to the shape of the leg. If desired, the knee plate can
be locked by tightening asquare bolt.
8. Regulating the Pressure on the Material
A powerful flat spring in the machine arm exerts the necessary pressure on the
sewing foot. The amount of pressure is regulated by turning a small set screw
which can be reached by inserting a screwdriver through the hole 19 at the
right of the spool pin. Turn the screw in for more pressure, or out, for less
pressure (Fig. 4).
9. Lubrication
Recent advances in the design of needle beorings hove mode it possible to
ensure satisfactory permanent lubrication of this new high-speed sewing
machine without the use of an automatic lubrication system.
11
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Since the use of sealed-fcr-IIfe bearings does not require the machine to be
oiltight, the incorporation of various feeding mechanisms can be easily
accomplished. This feature opens a practically unlimited Fteld of application
to this high-speed sewing machine.
The incorporotion of sealed-for-life boll ond needle bearings requires the use
of 0 reservoir oiling system merely for the sewing hook. From o reservoir built
into the machine arm, oil is fed to the sewing hook through a plastic oil tube.
The oil flow is controlled by shut-off valve V which is built into the oil tube.
When the machine is running, the stud of centrifugal switch F on the hook
shaft actuates the valve stem and opens hook lubrication shut-off valve V. The
same valve prevents oil from seeping out when the machine is inoperative.
Theoil level con be inspected through the oil sight glass. If it is below the mark
on the oil sight glass, the reservoir should be refilled by inserting the spout of
an ordinary oil can into the small hole v above the oil sight gloss.
The flow of oil to the sewing hook con, in addition, be regulated by screw w
(Fig. 8). Turn this screw in for less oil, or out, for more oil.
The correct setting con be obtained through the following test:
Remove needle plate and feed dog and place a sheet of paper over the open
ing. Run the machine for about ten seconds. The setting is correct if two thin
lines of spray oil have appeared on the paper. Adjust the flow of oil at screw w
to suit special operating conditions (Fig. 8).
0
fig. 8 R8603
12
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In conlrast to the sealed-for-life boll and needle bearings of the needle-bar
end of the machine which require no lubrication of all, take-up lever link z is
lubricated from the hook oil reservoir by means of a wick enclosed in a tube
(Fig. 9).
:fi: rv.i ;a.i
Fig. 9 Face cover removed
R 8605
Flat spring B exerls pressure on the presser foot, Lever C serves to retain ihe presser foot in its
highest position ofter it hos been raised by Ihe knee lever.
The oil supply in Ihe foam-rubber-lined reservoir x ond y for Ihe upper and lower needle bar
bushings should be replenished more or less frequently according to the time the machine is in
operation eoch doy.
From the foam-rubber-lined reservoirsx and y, oil is supplied to the upper and
lower needle bor bushings (Fig. 9).The oil supply in these reservoirs should be
replenished frequently, particularlywhile the machine is being run in.
13
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The feed driving and feed regulating mechanisms as well as the hook shaft
driving gears in the gear cose ore lubricated by means of two oil-soaked foam
rubber sheets.
To change the oil (once a year is sufficient), tilt back the machine and remove
the gear case cover. The foam rubber sheet should be woshed thoroughly in
order to remove the metal grit which has accumulated on it.
In most instances, however, it will be better to insert new foam rubber sheets
(Nos. 69299 and 69302) which must be soaked with 17 oz, or 160 ccm, of the
same oil as is used in the hook lubrication system, namely 2.7°E/50°C
(No. 120110).
When you replace the foam rubber sheet, make sure that it fits properly. The
large spur gear should run freely in the cutout of the sheet. The oscillating feed
rockshaft is grease-lubricated. Grease nipple N closes the left end of the shaft
(Fig. 8).
When screwing on the gear cose cover, make sure that the gasket is not
defective and that the
screws are lightened uniformly in order to prevent oil
from seeping out.
Note
In replenishing the oil supply for the sewing hook, take care that no air bubble
forms in the oil line to the centrifugal switch because this would interrupt the
flow of oil.
The simplest procedure for removing an air bubble from the oil line ahead of
the centrifugal
switch is as follows: Pull the left end of the oil tube off the
nipple and hold it up so that the air bubble rises to the surface. Then replace
the oil tube on the nipple carefully.
An air bubble which may hove formed in the left section of the oil tube is of no
consequence becauseitcan escape through the regulating valve (Fig. 10).
14
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s
Fig. 10 Bottom view of the Pfoff 463 R
8606
The gear cose cover and the foom rubber sheet are removed.
The lower drive shaft carries the feed driving eccentric and the hook shaH driving gear in the
gear case, ond the mechanical opener driving mechanism and the feed lifting eccentric near its
left end.
The hook shofi carries centrifugal switch F whose stud pushes the valve s'em to the right and
opens hook lubrication shut-off valve V. The same valve prevents the oil from seeping out when
the machine is inoperative.
The stitch length setting is transmitted from the stitch length control to shaft L, a crank mechanism
in the
gear case, the feed rock shaft, and an adjustable crank which, in turn, transmits it to the
feed bar.
Upon special request, the machine can be fitted with o stitch length limitoting device for back
ward sewing. To limit the length of the reverse stitch, turn in grub screw S of crank R on shofI L.
15
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Fig. 11 R8604
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PFAFF
No. 10769 engl. R962 Printed in Germany
From the library of: Superior Sewing Machine & Supply LLC