UnionSpecial 39500 GR Instructions For Adjusting And Operating Download | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Summary of Contents for 39500 GR

Page 1: ...39500 GR CATALOG No 103 GR INDUSTRIAL SEWING LEWIS COLUMBIA MACHINES CLASS 39500 HI STYLED HIGH SPEED OVERSEAMERS WITH DIFFERENTIAL FEED FOR FOUNDATION GARMENTS CHICAGO From the library of Superior Sewing Machine Supply LLC ...

Page 2: ... OPERATING LIST OF PARTS CLASS 39500 Style 39500 GR First Edition Copyright 1967 By Union Special Machine Co Rights Reserved in All Countries MACHINE COMPANY INDUSTRIAL SEWING MACHINES CHICAGO Printed in U S A 2 December 196 7 From the library of Superior Sewing Machine Supply LLC ...

Page 3: ...39500 References to directions such as right left front back etc are given from the operator s position while seated at the machine Operating direction of handwheel is away from operator STYLE OF MACHINE Hi Styled High Speed Single Curved Blade Needle Two Looper Three Thread or One Looper One Spreader Two Thread Machine Differential Feed Trimming Me chanism with Spring Pressed Lower Knife Automati...

Page 4: ...tion of Union Special machines can be secured only by use of needles packaged under our brand name which is backed by a re putation for producing highest quality needles in materials and workmanship for more than three quarters of a century CHANGING NEEDLES Release pressure on presser foot by turning presser foot release bushing AG Fig 1 and 1A and s wing presser arm U out of position Turn handwhe...

Page 5: ...ion release pressure on presser foot by turning presser foot release bushing AG and swing presser arm U out of position Be sure the threads as they come from the tension thread guide C are be tween tension discs J and in tension post slots K in tension post G The tension posts should be positioned so the tension post slot will be at the approximate angle for the different threads as indicated in F...

Page 6: ...ld raJFront Thread Guide Lower Looper Thread Ey Fabric Guard ID Presser Fig 1 Thread Eyelet 6 Cone Support 0 Top Cover _ Needle Thread Eyelet Upper Looper Thread Tube Assembly From the library of Superior Sewing Machine Supply LLC ...

Page 7: ...t Thread Guide Fabric Guard Bracket DFrame Looper Thread Guide m Presser Arm Fig lA m Thread Eyelet 7 B Cone Support Presser Foot j r Release Bushing Top Cover Needle Thread Eyelet Upper Looper Thread Tube Assembly Upper Looper Lower Looper From the library of Superior Sewing Machine Supply LLC ...

Page 8: ...locking nut C so that its under surface is approximately 1 32 inch to 1 16 inch from the top surface of adjusting screw B Set cap D against locking nut C FEED ECCENTRICS Fig 2 Feed eccentrics used in Style 39500 GR machines have been selected to produce approximately 20 stitches per inch It will be noted that the part number of main feed eccentric is No 39540 B 20 while that of differential feed e...

Page 9: ...per at the left end of its stroke set looper point 1 8 inch from center of needle Fig 5 using loor ergaugeNo 21225 1j8 Do nothave low er looper deflecting Fig 5 Fig 4 needle Tighten nut C Now assemble differential front feed dog SETTING THE REAR NEEDLE GUARD Set rear needle guard A Fig 6 as high as possi ble without interferring with either lower looper or movement of lower knife holder but still ...

Page 10: ...he needle and should be 15 32 inch above the top of the throat plate Fig 10 If resetting is neces sary do so by moving the spreader holder A Fig 10 Now check setting between upper spreader and needle If needle rubs Fig 9 the back of spreader pull spreader out of its holder slightly and rotate spreader holder forward a short di stance These same adjust ments in opposite movement will reduce the cle...

Page 11: ...h below cut ting edge of lower knife The chain guard G should be set down against the upper knife and slightly back from the cutting edge After upper knife has been set for proper width of trim screw H should be tightened to lock upper knife holding block J in place This will simplify resetting when upper knife is replaced SETTING THE STITCH LENGTH Length of stitch is determined by the combination...

Page 12: ... be raised no higher than upper spreader or looper will permit then lock the nut D There should be from 1 16 to 1 8 inch free mot on of foot lifter lever before the presser foot begins to rise This adjustment should be made with screw E and locked with nut F Re assemble the chip guard fabric guard and cloth plate To assemble chip guard turn handwheel until upper knife assembly reaches its highest ...

Page 13: ...THREAD CONTROL 505 STITCH ONLY With material under presser foot set upper looper thread eyelet N Fig lA so it contacts the lower looper thread eyelet R and is back far enough so upper looper thread is a little slack when upper looper reaches the left end of its stroke THREAD TENSIONS Before proceeding balance thread tensions to give a normal appearing stitch Keep tensions as light as possible and ...

Page 14: ...14 From the library of Superior Sewing Machine Supply LLC ...

Page 15: ...0 B 20 Main Feed Driving Eccentric 1 6 22894 Y Screw for upper looper or upper spreader 1 7 39560 A Upper Spreader 1 8 39526 AA Differential Feed Dog marked AA 12 teeth per inch 1 9 39505 P Main Feed Dog marked J 12 teeth per inch 1 10 39556 E Presser Arm 1 11 39556 K Chain Cutting Knife 1 12 90 Screw for chain cutting knife 1 13 39501 E Cloth Plate for non submerged installation 1 14 39582 GG Sid...

Page 16: ...your needs promptly and efficiently Whatever your loca tion there is a Union Special Representative to serve you Check with him today ATLANTA GA BOSTON MASS CHICAGO ILL DALLAS TEXAS LOS ANGELES CAL NEW YORK N Y PHILADELPHIA PA MONTREAL QUEBEC BRUSSELS BELGIUM LEICESTER ENGLAND LONDON ENGLAND PARIS FRANCE STUTTGART GERMANY Representatives and distributor in all Important industrial cities throughou...

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