Pfaff 3114 User manual

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PFAFF 3114
Auiomatic Locksfifch Buttonhole
Sewing Machine
INSTRUCTION BOOK
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G. M. PFAFF AG, Sewing Machine Factory, KAISERSLAUTERN
From the library of: Superior Sewing Machine & Supply LLC

Inde X
Section Page
1. Setting Up the Machine 5
2. Cleaning
and Lubricating 7
3. Needle and Thread 10
4. Inserting the Needle 11
5. Threading
the Needle 11
6. Winding the Bobbin 12
7. Changing the Bobbin 13
8. Threading the Bobbin Cose 13
9. Regulating the Bobbin Thread Tension 15
10. Regulating the Needle Threod Tension 16
11. Placement of the Work 18
12. Starting the Mochine 18
13. Stopping the Machine 19
14. Stopping the Machine While Sewing 19
15. Regulating the Length of Buttonhole .22
16. Changing the Number of Stitches per Buttonhole 24
17. Changing the Width of Bcur and Parallel 25
18. Adjusting the Position of the Buttonhole in Relation to the
Cutting Space 26
19. Regulating the Distonce Between Parallels 26
20. Exchanging the Buttonhole Knife 26
21. Proper Position of Knife Holder 27
22. The Needle Thread Trimmer 27
23.
The Bobbin Thread Trimmer 29
24. Pulling Off the Needle Thread and Releasing the Top Tension . . 31
25. The Knife Action 32
26. Dismantling the Hook 33
27. Timing the Hook 34
28. Regulating the Pressure on the Material 37
29. Changing the Buffer Spring 37
30. Adjusting the Stop Motion Lever 38
31. Adjusting the Brake Lever 39
32. Adjusting the Tripping Lever 39
33. Adjusting the Hand Stop Lever 41
34. Adjusting the Stop Tripping Segment 42
35. Adjusting the Bar
Tripping Segment 44
36. Adjusting the Needle Bar Zero Lug 44
37. The Feed Cam Broke 46
38. Adjusting the Tension Release Tripping Point 46
39. Adjusting the Starting Lever 46
40. Trouble Shooting 47
From the library of: Superior Sewing Machine & Supply LLC

Instruction Book
PFAFF 3114
Automatic Lockstitch Buttonhole Sewing Machine
This Instruction Book contains useful informoHon for operators and mecha
nics alike and therefore should be made available to both rather than be
put av/ay in your files.
Photo 1
From the library of: Superior Sewing Machine & Supply LLC

Photo 2
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The PFAFF 3114 is a special purpose sewing machine which stitches both
whipstitch and purlstitch buttonholes with two straight or taper bars, from
—I'/ifi" long/ completely automatically. With equal facility, the ma
chine makes eyelet-end buttonholes with one taper bar. Its range of applica
tions extends from lightweight to heavyweight fabrics and includes linen
goods, tricot and knitwear, sports and workwear garments, aprons and
similar articles; in short, this versatile machine is used In every case where
straight or eyelet-end buttonholes are to be made.
An exclusive feature of the PFAFF 3114 Is a bedplate which is free of any
mechanism whatsoever. This large, clear area facilitates not only the
handling of the work but also the mounting of attachments, such as edge
guides, gauges and tape guides which are used for manipulating knitted
fobrics.
Subclasses
The various subclasses of the PFAFF 31 !4 differ mainly by their feed cams,
work clamps and, in some instances, their bar tripping segments (see Table
of Subclasses). When converting machines from one subclass into
another,
note that subclasses 1 and 2; 3 and 4; 5, 6 and 12; as well as 7, 8, 9 and
10 use the same feed cams. The various subclass machines use work clamps
which differ according to the maximum length of the buttonhole tiie res
pective machine mokes. For sewing buttonholes in tricot materials and
knitted fabrics, we supply a tape guide which is to be mounted on the
bedplate. Upon special request, the machines of this class will be equipped
with collar and cuff guides.
In most instances, the size of the button is given in lignes, the length of
the buttonhole slot in millimeters or inches.
40 lignes = 1 inch (1 inch 25.4 millimeter)
The PFAFF 3114 is available In the following varieties:
From the library of: Superior Sewing Machine & Supply LLC

Lenghf of
Buttonhole
'/4"-l"
V/'-l"
"2"-lV4"
'//'-T/4"
V2"-l'/4'
Vs"
1"
^'4"-V
V4"-l'/4"
Model
Inside
Dimensions
of Work
Feed Frame
WIdfh Length
"/S4
-•'Ui
'i/
li
It*
15/
It*
^-1.
IVs.'
1"/
]19j
2"/,
1"/s
]*9I
l"/44"
l"/4
1^744"
Class of Work
Lingerie
Blouses
Corsetry
Tricot
Knit Goods
Ladies' Wear
Sport and Work
Clothes
Extra long button
holes, belt slots in
aprons and work
clothes
Ornamental button
holes In lapels and
sleeve slashes
Buttonholes in trouser
front flies and trouser
pocket flaps
Work Clothing
Staple Goods
Work Clothing
Staple Goods
Work Clothing
Staple Goods
Stitch Diagram
with 2 straight bars
with 2 straight bars
with 2 straight bars
with 2 straight bars
with t taper bar
with 2 taper bars
with 1 taper and 1 conceoled bar
and pear-shaped eye
with 1 straight and 1 conceoled bar
and pear-shaped eye
with 1 taper and 1 concealed bar
and pear-shaped eye
From the library of: Superior Sewing Machine & Supply LLC

10
30
12
30
14
Lenght of
Buttonhole
^/4"-T/4'
V/'-V
Model
Inside
Dimensions
of Work
Feed Frame
Width Length
732
Jl/..
l"/64
1''/S4
Class of Work
Work Clothing
Staple Goods
Tricot Knitwear
(with gimp guide)
Tricot, Knitwear
(with gimp guide)
Stitch Diagram
with 1 straight and 1 concealed bar
and pear-shabed eye
with 1 taper bar
with 1 taper bar
1. Setting Up the Machine
As shown in photo 1, the PFAFF 3114 is set up with its head facing the
operator.
When supplied with individual power table, the head is packed separately
and has to be mounted on the power table which comes from the factor/i
ready-assembled. For this purpose, place the cast-iron machine base and
the felt pads on the table so that the front edge of the base is flush with
the front edge of the table projection and that the base is positioned exact
ly in the middle of this projection. Now the machine head is carefully
mounted on the base and connected with its hinges.
Make sure that the machine rests properly on the rubber blocks.
Mount both driving belts, attach the belt guard and screw it down on its
hinges.
Make particularly sure that the machine pulley always rotates in the right
direction, as indicated by the arrow in photo 23.
The Va HP electric motor performs at aconstant speed of 1,400 r.p.m. and
is provided with a two-speed pulley No. 99056 which measures S^/g" and
in diameter and permits a sewing speed of 1,800 s.p.m. A second
two-speed pulley No. 99057, with diameters of ond P'/a:"* comes
with the machine and allows for a sewing speed of 2,000 s.p.m.
When in permanent operation, the PFAFF 3114 should be operated at 1,800
r.p.m. for the first six weeks. After this time the speed may be increased
to 2,000 r.p.m. by exchanging the mofor pulley.
-5
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When using first-rate thread, the sewing speed may even be increased to
2,200 r.p.m. For this purpose, mqtor pulley No. 99058, with diameters of
4^/32" and is avoi-loble at extra cost.
When ordering motor pulleys, please specify the diameter of the motor
shaft.
In those cases where a motor with a higher speed is already on hand end
has to be used, a speed reducer will be furnished for the PFAFF 3114 when
set up on individual power table. The type of speed reducer required
should be specified on the order. High-speed motors are not recommended
because the small pulleys they require have very unfavorable transmission
ratios.
To facilitote mounting the PFAFF 3114 on an existing power benching
system, it is advisable to procure from us a table fop in the proper length
and with the
necessary cutouts and holes. From the line shaft pulley, power
is conveyed to ihe machine by means of two jockey pulleys and one two-
speed pulley.
With a line
shaft speed of 300 r.p.m., a line shaft pulley of 9^'/32" diameter
is required to obtain a sewing speed of 1,800 s.p.m.
When using thread of a superior quality, a line shaft pulley of 11
diameter may be used after the breaking-in period so as to obtain ,a
sewing speed of 2,200 s.p.m.
Photo 3
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Photo 2 depicts the disposition of the two-speed and jockey pu'Ileys and
the belt guard. The treadles for operating the macNine should be screwed
on within easy reach of the operator.
The long chain which serves to lift the work clamp is suspended from the
lifting lever L on the left side of the machine, passed through the hole ir>
the toble top, and connected to the second or third hole in the left treadle,
depending on the angle of inclination desired.
The short chain is suspended from the starting lever inside of the machine
base end is connected to the right treadle.
Whereas the PFAFF 3114 is exclusively set up crosswise of the table, as
shown in photos 1 and 2, when used in garment manufacture, it is often
mounted lengthwise of the toble (Photo 3) when used in the manufacture
of linen and tricot goods. Since the buttonholes in these articles, e.g. men's
shirts, extend lengthwise of the buttonhole facing, this way of setting up
the machine greatly facilitates its operotion.
2. Cleaning and Lubricating
When delivered, all polished parts of the machine are coated with a rust-
prevenlive lubricant which, together with the dust accumulated in transit,
should be
removed, and the machine thoroughly rinsed with kerosene ot
Photo 4
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all oiling points. Then place apiece of fabric under the work clamp, prefer
ably remove the bobbin cose cap, and run the machine ashort while
without being threaded. This done, apply sewing machine oil at all oiling
points (see Section 12).
In order to reach the oiling points in the machine bed, open the catch o;f
the belt guord, tip the belt guard back, tilt over the head of the machine
to the left and rest it carefully on the wooden machine rest pfini.
The oiling points ore marked by arrows in the illustrations and, as far as
feasible, are marked with red pqint and the work "OEL" on the machine.
UlUUIBBSf
Photo 5
Special care should be taken that the PFAFF 3114 be oiled properly. With
amechanism as complex as th,is, it is impossible, of course, to mark all
points of friction which should be oiled. Excessive oiling should be avoided
so as not to soil the work. To ensure uniform stitches, the hook race must
be cleaned and oiled every day.
From the library of: Superior Sewing Machine & Supply LLC