The Singer Model 66 is a classic treadle sewing machine manufactured from 1905 to 1950s, featuring oscillating hook shuttle system, reverse feed capability, and ornate decals. This vintage machine operates via foot treadle or can be converted to electric motor, with stitch length adjustment, tension control, and bobbin winding mechanism. Below are key sections for operation, maintenance, troubleshooting, and historical information.
Key components: Cast iron body with ornate decals, treadle mechanism, oscillating shuttle, tension discs, stitch length regulator, reverse lever.
| Feature | Description |
|---|---|
| Treadle Operation | Foot-powered via treadle and flywheel |
| Stitch Length Regulator | Adjustable from 6-20 stitches per inch |
| Reverse Stitch | Lever for back-tacking stitches |
| Oscillating Shuttle | Classic bobbin system with shuttle race |
| Tension Control | Adjustable upper thread tension |
| Bobbin Winder | Built-in bobbin winding mechanism |
| Presser Foot | Standard low-shank feet compatible |
| Decorative Decals | Ornate gold and black decal patterns |
| Needle System | Uses 15x1 needles (standard domestic) |
| Throat Plate | Removable with seam guide markings |
Assemble treadle cabinet and position machine properly.
WARNING! Machine is heavy cast iron; use proper lifting technique. Ensure cabinet is stable before operation.
Begin with proper threading and treadle motion.
CAUTION! Keep fingers away from needle when treadling. Always raise needle to highest position when stopping.
Main controls located on machine face and bed.
Stitch Length: Turn knob on front face - higher numbers for longer stitches. Reverse Lever: Press down for back-tacking. Tension Dial: Turn clockwise to increase tension. Presser Foot Pressure: Adjust screw above foot (factory set). Bobbin Winder: Push winder against wheel to engage.
Proper threading is essential for good stitch formation.
Tip: Always raise take-up lever to highest position before threading.
Regular oiling prevents wear and ensures smooth operation.
WARNING! Use only high-quality sewing machine oil. Never use household oils or WD-40.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Thread breaking | Incorrect threading/tension | Rethread completely; reduce tension; check for burrs. |
| Skip stitches | Bent needle/wrong needle | Replace needle; ensure correct 15x1 type. |
| Bobbin thread bunching | Incorrect bobbin threading | Rethread bobbin; check bobbin case tension. |
| Machine runs hard | Lack of oil/lint buildup | Clean and oil thoroughly; check for obstructions. |
| Uneven stitches | Tension imbalance | Adjust upper and bobbin tension; check thread quality. |
Proper needle installation ensures optimal performance.
CAUTION! Always turn handwheel toward you. Never force the machine.
The Singer Model 66 was introduced in 1905 as a domestic sewing machine. Over 1 million were produced with various decal patterns including "Red Eye," "Sphinx," and "Filigree." The machine was available in treadle, hand crank, and later electric motor versions. Serial numbers can date manufacture between 1905-1950s.
Replacement Parts: Available through vintage sewing machine suppliers.
Service: Contact authorized Singer service centers for professional repair.