PFAFF 28 Cylinder Bed Right Arm Sewing Machine with Beak Shutt%e INSTRUCTION BOOK G. M.
FRiCTION ‘“LEVER D FIGURE 8 Page 11
Index Section 1, 2. 3. 4, 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15, 16. 17. 18. 19. Page Dehvery of the Machine 2 7 Engaging and Disengaging the Sewing Mechanism Threading the Needle 3 Winding the Bobbin 4 Changing the Bobbin and Threading the Bobbin Case 7 Drawing Up the Bobbin Thread 7 Regulating the Thread Tensans 6 Regulating the Pressure an the Material 8 Ch.
Instruction Book PFAFF 28 Cylinder Bed Right Arm Sewing Machine Fitted with standard or extra large beak shuttle, link fake-up, knee lever presser foot lifter, reversible drop feed, wooden extension or iron screw-on work support for flat seaming oper ations, provided for foot, individual motor or power bench drive
1. Delivery of the Machine Unless shipped directly, every sewing machine, when received at our dealers, is unpacked, carefully checked for possible damage inflicted in transit, cleaned, and tested for perfect sewing before being released For delivery to the customer. 2. Engaging and Disengaging the Sewing Mechanism Two varieties of the PFAFF 28 are available: 1. with standard-size beak shuttle; 2. with extra large beak shuttle.
3. ThreadIng the Needle As shown in photo 2, pass the thread from spool 1 through the three slotted holes of thread guide 2, around and between the tension discs 3, through check spring 4, beneath guide 5, through eyelet 6, right-left through take-up 7, through eyelets 8 and 9, needle bar eyelet 10, and then left-right through needle eye 11. Note: As with all sewing machines, the needle of the PFAFF 28 is threaded in “long groove—short groove” direction.
4. Winding the Bobbin All PEAFF 28 machines are equipped with a table winder which hos proved very useful in all sewing shops. As shown in photo 3, place spool 1 on pin 2, and the empty bobbin on spindle 6. Pass the thread from spool 1 through the hole 3, between tenson discs 4, over pin 5, and through the slot in the face of the bobbin. By press ng down engaging lever 7, the bobbin winder pulley is pushed over against the belt of the machine and the winder is engaged. Now start the machine.
5. Changing the Bobbin and Threading the Bobbin Case Raise the shuttle race cop by slightly pushing it up with thumb and index finger of your left hand so that it can be slipped over the head of screw a (see photo 4), then let it hong by the hinge screw. Turn the balance wheel until the beak shuttle is in is extreme right-hand position. The b ak shuttle can now easily be opened with the index finger of your left hand as shown in photos 5 and 6, and the bobbin taken out.
3. Lay both threads back under the presser foot. Basic Role: Stop the machine or commence sewing only with the take.up in its highest position. This precaution will keep the thread from slipping out of the needle eye and will prevent jamming of the thread in the shuttle roce. In this case it is not necessary to hold the needle and bobbin threads when commencing to sew. Photo 7 Photo 6 7.
Photo 9 Photo 8 The bobbin thread tension is regulated by means oF the small screw will increase driver. Turning tension screw d (see photo 8) clockwise will decrease the tension. the tension; turning it coueter-clockwise -< , Since most of the stitching work done on the PFAFF 28 coIls not only for perfect but also for strong and durable seams, the thread tensions must be regulated very coefully.
In fig. 12, the needle thread tension may be too loose or the bobbin thread tension too tight. The operator will have to decide in each individual case whether or not the thread forms small either tension requires adjustment, particularly so krots or loops on the upDer or underside of thc material. Fig. 11 Fig. 12 Note: The neede thread tension can only be adjusted with the presser bar lowered, as raising the presser bar will automatically release thu tension. 8.
If the needles are too thick for the material to be sewn, ugly needle marks will show in the material. With long, thin needles, vibration of the needle can hardly be avoided. Therefore, two needle systems comprising needles of different lengths are used with PFAFF 28 machines, depending on the type of work. For machines intended far fine stitching in lightweight leather, short needles with round shank, System 690, are used.
- Needle and Thread Chart PFAFF Needle Size Cotton Rayon Silk, continuous fiber Silk, staple fiber 90-60 40-30 00 24 very fine leather, flimsy fabrics Cotton Rayon Silk, continuous fiber Silk, staple fiber 60-40 30-24 0 22 fine leather, fine linings 10 Cotton Rayon Silk, continuous fiber Silk, staple fiber 50-30 30-24 A 20 medium leather, fine shoe uppers and bags, medium fabrics 11 Cotton Rayon Linen Silk, continuous fiber Silk, staple fiber 40-30 24-16 80-70 B 18 cowhide leather work, knaps
1O Inserting the Needle In any case, the needle is to be pushed up in the needle bar as far as it will go and to be fastened securely. Flat-shank needles, System 805, ore to be inserted with the flat side of the shank facing the needle bar. However, inserting round-shank needles, System 190 and 690, should present no problem if the following basic rule is observed: In all sewing machines, the short groove of the needle should face the shuttle. 11.
12. The Knee Lever Presser Foot Lifter With the exception of sub-class 28-15, all PFAFF 28 machines are provid ed with a knee lifter which permits to raise and lower the roller presser or presser foot by knee control and allows the operator to rnaniouiate the work with both hands when performing intricate sewing operations. The knee lever pad can easily be adjusted vertically and horizontally so as to suit every operator. 13.
The extra arge beak shuttle which is used in canjunction with longer needles is of the same type as the standard-size beak shuttle, the only difference being ts larger size to accomodate a bobbin of a greater capa city. 14.
/ I Photo (7 As a rule, all bearings and parts n movable contact are to be oiled. the After the machine has been tilted over (as instructed in poragroph 1 4), 16). parts inside the vertical part of the arm are eosily occesstble (see photo The machine will repay thorough cleaning and proper oiling with light running and perfect stitching.
Packed dust or fluff should be carefully removed with a pointed pece of wood. Scissors and screw drivers ore unsuitable for this purpose. The lacquer finish of the machine does not require special maintenance. It is sufficient to rub off the machine now and then with same kerosene and to polish it with a soft cloth. Photo 18 16. The Treadle Stand Only in very rare cases will the PFAFF 28 be used as a foot driven machine exclusively.
The electric motor calls for practically no maintenance. After a longer period of use, check if there is sufficient grease in the grease bushings. If tilling up is necessary, use only the special motor grease whch we supply in handy tubes. The complete treadle assembly is left on the machine when it is power driven.
19 Probable Causes of Sewing Troubles Skipping of Stitches: 1. 2. 3. 4. 5. Neede inserted incorrectly, grooves facing the wrong way. Other than proper needle system used. Needle bent. Needle threaded incorrectly. Needle inadequate for the thread used. Breaking of Thread: 1. 2. 3. 4. 5. 6. For any of the causes mentioned above. Tensions too tight. lnferior.quolity or knotty thread used. Shuttle race insufficiently oiled. Thread jamming in shuttle race. Edges of needle hole damaged by the needle.
SEWING MACHINE FACTORY G. M. PFAFF AG, KAISERSLAUTERN Founded 1862 Certificate of Guarantee For every PFAFF Sewing Machine bearing this MARK TRADE and the name PFAFF the factory assumes fu(I guarantee for first-class quality, efficiency, and durability. The Trade Mark and the name PFAFF are registered. All rights reserved. Nr. 9008 engl.
