UnionSpecial 39500N Series Instructions For Adjusting And Operating Download Page 8 | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Summary of Contents for 39500N Series

Page 1: ... QUALITY STYLES 39500N CATALOG No 103R SECOND EDITION LEWIS COLUMBIA CLASS 39500 STREAMLINED INDUSTRIAL S EWING MACHINES HIGH SPEED OVERSEAMERS CH I CAGO From the library of Superior Sewing Machine Supply LLC ...

Page 2: ... From the library of Superior Sewing Machine Supply LLC ...

Page 3: ...ERATING LIST OF PARTS CLASS 39500 Style 39500 N Second E clition Copyright 1957 by Union Special Machin e Co Rights Reserved in All Countries MACHINE COMPANY INDUSTRIAL SEWING MACHINES CHICAGO Printed in U S A 3 From the library of Superior Sewing Machine Supply LLC ...

Page 4: ... furnish carefully prepared information that will enable the customer to secure all possible advantages from the use of Union Specials The following pages contain valuable operating and adjusting data and illustrates and describe the parts for Styles in Class 39500 Union Special representatives will be found in all manufacturing centers anxious to cooperate with you to plan and estimate requiremen...

Page 5: ...tandard seam width 3 16 to 7 32 inch stitch range 8 20 per inch1 standard setting 12 per inch cam adjusted plain feed OILING CAUTION Oil was drained from machine when shipped so reservoir must be filled before beginning to operate Oil capacity of Class 39500 is six oun8es A straight mineral oil of a Saybolt viscosity of 90 to 125 seconds at 100 Fahrenheit should be used Machine is filled with oil ...

Page 6: ...le is at high position with draw needle To replace needle leave needle holder at high position and with t he flat to the left insert needle in holder until it rests against stop pin Keeping needle in this position turn handwheel until holder is aga in at its low point of travel then tighten nut Return presser arm H to position r e lock pres s er foot release bushing U THREAD STAND Afterthread come...

Page 7: ...r Thread Eye et Auxiliary Looper Thr ead Ey ele IJ Lower Loo per Thr ad Eyel et IJ Fabric Guard Bracket aF rame LoopPr CJrr r Arm Fig 1 7 Cone Suppo l Pres rr foot HP en e Hu shin Thread Pull o ff t NPPdle Th read Cam 11 off __ Needle Thr ead Eyelet Lower Looper From the library of Superior Sewing Machine Supply LLC ...

Page 8: ...its highest position Insert needle thread from right to left through both eyes of needle thread eyelet R under neck of top cover casting then down through hole in top cover needle thread eyelet P Thread needle from front THREAD TENSION The amount of tension on needle and looper threads is regulated by three knurled tension nuts AA Fig 1 Tension on threads should be only enough to secure proper sti...

Page 9: ...3 Move needle driving arm A Fig 3 by loosening clamp screw B Remove throat plate If needle t h r e a d cam pull off A Fig 4 overlaps looper thread pull off B separate by moving looper thread pull off back When retightening looper pull off screw be sure to take up end play in needle driving arm At this point in sert lower looper A Fig 6 into bar B With lower looper at left end of its stroke set loo...

Page 10: ...n its holder so that the shank extends 1116 to 3132 inch beyond holder Fig 8 When the upper looper is at the right end of its stroke upper looper holder should be set to position upper looper shank about vertically Fig 8 By adjusting looper holder in or out of upper looper shaft and by turning the looper around its shank set upper looper point to cross lower looper to the left of the lower looper ...

Page 11: ... their highest point of travel the top of the teeth on the main feed dog A should be 3 64 inch above the throat plate Now set chaining feed dog teeth B flush with the top of throat plate SETTING THE LOWER KNIFE Replace lower knife holder assembly Lower knife A Fig 13 should be set with cutting edge flush with throat plate surface Adjustments are made with hexagonal head screw which holds lower kni...

Page 12: ...ck and forth slightly during extraction Fig 14 SETTING THE PRESSER FOOT Fig 15 Assemble presser foot to presser arm With needle in highposition swing presser arm into sewing position and lock in place If necessary presser foot can be realigned with throat plate slots by shifting foot lifter lever shaft Foot lifter lever arm A Fig 15 and collar B secure the shaft Be sure presser arm does not bind a...

Page 13: ...ooper thread should be drawn through the tension before lower looper thread comes off upper looper To increase amount of thread drawn through the tension while lower looper thread is on upper looper move lower looper thread eyelet E down keeping the same amount of pull off action UPPER LOOPER THREAD CONTROL Befor e proceeding to adjust upper looper thread eyelet C Fig 1 balance all three tensions ...

Page 14: ... shaft Observe same precautions when re assembling cap as described in 7 above 9 Remove screw K Fig 16 which holds inner right crankshaft bearing This screw is reached through bottom of bed casting 10 Loosen two screws L in fan collar remove both halves of cooling fan 11 Remove screw M take off pulley cap N 12 Loosen two screws P remove pulley R 13 Remove three screws S take off bearing retaining ...

Page 15: ...ded so complete sub assembly should be ordered At the back of the book will be found a numerical index of all the parts shown in this book This will facilitate locating the illustration and description when only the part number is known IDENTIFYING PARTS Where the construction permits each part is stamped with its part number On some of the smaller parts and on those where construction does not pe...

Page 16: ... _ I I 27 24 16 From the library of Superior Sewing Machine Supply LLC ...

Page 17: ...d Eyelet 1 Screw Eyele 2 Oil Drain Plug Screw magnetic 1 Screw Upper Looper Thread Tube Assembly 1 Upper Looper Thread Tube Assembly 1 Screw Tube Tension Spring 1 Looper Thread Tube Tension Spring 1 Thread Tube 1 Feed Bar Oil Shield 1 Screw Feed Bar Oil Shield 1 Oil Tube Coupling 1 Feed Bar Connecting Rod Oil Tube 1 Screw Cloth Plate 1 Cloth Plate semisubmer ged installation 1 Cloth Plate nonsubme...

Page 18: ...29 A NEFDLE DRIVE BEAIIJNG B SPllEADER Uf pfR LOOPER DRIVE uEAHII G C UPPER KNIF DIUVE nr A D LOWEH LOOPER DRIVE BEA 18 From the library of Superior Sewing Machine Supply LLC ...

Page 19: ...sing 1 Thrust VVasher 1 Crank Chamber Cooling Fan 1 Crank Chamber Cooling Fan Collar 1 Screw 2 Crankshaft Bearing1 inner right 1 Screw 1 Oil Slinger Collar 1 Screw 2 Crankshaft 1 Crankshaft Split Bearing 1 Screw1 for split bearing 2 Screw1 for crankshaft counterweight 2 Crankshaft Counterweight right 1 Crankshaft Counterweight1 middle 1 Screw1 for crankshaft counterweight 2 Stud1 for crankshaft sp...

Page 20: ...20 From the library of Superior Sewing Machine Supply LLC ...

Page 21: ...uide right 1 Feed Bar Guide Washer 2 Screw Feed Bar Guide right 2 Screw Thrust Washer 3 Feed Bar Thrust Washer 1 Feed Lift Block 1 Main Feed Bar 1 Main Feed Dog 1 Screw Main Feed Dog 1 Chaining Feed Dog 1 Screw Chaining Feed Dog 1 Main Feed Bar Driving Connection 1 Main Feed Driving Eccentric 1 Feed Eccentric Spacer 1 Washer Crankshaft 1 Nut Crankshaft 1 Nut Feed Bar Driving Stud 1 Feed Bar Dr ivi...

Page 22: ...9 15 22 From the library of Superior Sewing Machine Supply LLC ...

Page 23: ...rew Oil Splasher 1 Oil Splasher 1 Screw Guide Fork 1 Ball Joint Guide Fork Upper Looper Drive Assembly 1 Collar Clamp 1 Screw Collar Clamp 1 Upper Looper Shaft Thrust Washer 2 Upper Looper Shaft 1 Bushing and Cam Guide 1 Screw Cam Guide 1 Cam Follower 1 Cam Follower Locking Clamp 1 Screw Locking Clamp 1 Screw Upper Looper Holde r Collar 1 Upper Looper Holder Collar 1 Upper Looper Holder 1 Screw Up...

Page 24: ...24 From the library of Superior Sewing Machine Supply LLC ...

Page 25: ...pper Knife Driving Arm Washer 1 Upper Knife Driving Arm 1 Upper Knife Clamp Stud 1 Upper Knife Holder Block 1 Screw Holder Bl ock Cl amp Stud 1 Upper Knife 1 Upper Knife Clamp 1 Upper Knife Chain Guard 1 Nut Upper Knife Assembly 1 Screw Needle Guard front 1 Needle Guard front 1 Screw Needle Guard rear 1 Needle Guard rear 1 Screw Throat Plate 1 Throat Plate 1 Lower Knife Holder Spring 1 Lower Knife...

Page 26: ... f tB 11 26 From the library of Superior Sewing Machine Supply LLC ...

Page 27: ... 1 Screw Lever Arm 2 Nut Lever Arm 2 Foot Lifter Lever Shaft Collar 1 Screw Collar 2 Foot Lifter Lever Shaft 1 Screw Presser Arm 1 Nut Presser Arm 1 Presser Arm 1 Presser Foot 1 Scr ew Stitch Tongue 1 Presser Foot Hinge Spring 1 Presser Foot Stitch Tongue 1 Tension Post Nut 3 Looper Thread Tension Spring 2 Needle Thread Tension Spring 1 Tension Post Ferrule 3 TensionDisc 6 Tension Post 3 Tension P...

Page 28: ...28 From the library of Superior Sewing Machine Supply LLC ...

Page 29: ...8 inches long for semisubmerged individual power table installations No 1 11 V11 Belt 40 inches long for nonsubmerged individual power table installations Tray 1 3 4 inches high for semi submerged installations Tray 1 3 4 inches high for semisubmerged installations with front section extended to right Finger Protector Presser Arm Chain Cutting Knife lower Presser Arm Chain Cutting Knife upper Pres...

Page 30: ...34 G 21 39534 If 21 39534 R 17 39 535 c 21 3953 5 D 21 39535 F 21 39535 J 21 30 P a r t No Page No 95 36 A 21 i9536 B 21 395 3 6 c 21 3953 6 D 21 i 9536 E 21 J9538 21 J9540 B 1 2 21 39540 J 21 39541 19 3954 3 23 39 543 A 23 39543 E 23 3954 i H 23 39543 K 23 39543 i L 23 39543 p 23 39543 H 23 39543 s 23 3954 3 T 23 39544 23 39544 B 23 39544 D 23 39544 L 19 39544 s 23 39544 23 3 549 25 39 550 B 25 3...

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