From the library of: Superior Sewing Machine & Supply LLCFINE STST YL ES63 900A63900 B63 90 OC6390 OD6390OALCATALOGNo.126MSecondEditionZwwm~L E W I s® • C O L U M B I A®CLASS 63900STREAMLINEDHIGH SPEED NEEDLE FEEDLOCKSTITCH MACHINESINDUSTRIALSEWINGMACHINESUNION SPECIAL CORPORATIONCHICAGO

UnionSpecial 63900 Series Instructions For Adjusting And Operating

PREFACE

SAFETY RULES

IDENTIFICATION OF MACHINES

ILLUSTRATIONS (CONT.)

TABLEBOARD

LUBRICATION

SELF-PRIMING HEAD OIL SIPHON

THREAD

THREADING THE BOBBIN CASE (CONT.)

BOBBIN THREAD TENSION (CONT.)

TIMING THE NEEDLE FEED WITH THE CONTINUOUS TURNING ROLLER FEED

TIMING THE HOOK

NEEDLE GUARD INSTRUCTIONS (CONT.)

TENSION ASSEMBLY ADJUSTMENT

THREAD CONTROL (CONT.)

HOOK SHAFT (CONT.)

REASSEMBLY OF OILING DEVICE

REASSEMBLY OF OILING DEVICE (CONT.)

UPPER MAIN SHAFT (CONT.)

HANDWHEEL (CONT.)

MAIN FRAME MISCELLANEOUS COVERS AND NEEDLE TENSION PARTS

MAIN FRAME MISCELLANEOUS COVERS AND NEEDLE TENSION PARTS (CONT.)

MAIN AND HOOK DRIVE SHAFTS, NEEDLE BAR AND FOOT LIFTER MECHANISM

NEEDLE FEED DRIVING PARTS

PRESSER FEET, PRESSER BAR, TOP FEED ROLLER MECHANISM AND ATTACHMENTS

ROTATING HOOK ASSEMBLY AND HOOK OILING PARTS

FEED ROLLER DRIVING PARTS

FEED ROLLER DRIVING PARTS (CONT.)

BOBBIN WINDER AND MISCELLANEOUS ACCESSORIES

NUMERICAL INDEX OF PARTS

NOTES

63900 Series

63900A

63900B

6390OAL

6390OC

6390OD