UnionSpecial 39500GB, Instructions For Adjusting And Operating

Page 1: ...C 045 CATALOG No 103GB INDUSTRIAL SEWING L EWIS CO L UMB I A MACHINES 0 _ CLASS 3 9500 HI STYLED HIGH SPEED TWO NEEDLE DIFFERENTIAL FEED TOE CLOSING MACHINES MACHINE COMPANY CHICAGO From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...ING 39500 GB LIST OF PARTS CLASS 39500 Styles 39500 GC 045 First Edition Copyright 1967 By Union Special Machine Coo Rights Reserved in All Countries MACHINE COMPANY INDUSTRIAL SEWING MACHINES CHICAGO P r i n t e d in U S A 2 July 1972 From the library of Superior Sewing Machine Supply LLC ...

Page 3: ...ch 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 STYLES OF MACHINES Hi Styled High Speed Two Curved Blade Needles One Looper One Spreader Three Thread Overseam ing Machines Differential Feed Trimming Mechanism with Spring Pressed Lower Knife Automatic Lubricating System 39500 GB Light to medium...

Page 4: ...e 154 GCS Size 025 Selection of proper needle size is determined by size of thread used Thread should pass freely through needle eye in order to produce a good stitch formation Success in the operation of Union Special machines Gan 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 ...

Page 5: ...d swing presser arm U out of posi tion Be sure the threads as they come from the tension thread guide C are be tween tension discs J and in tension_post slot 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 Fig 1 and lAo TO THREAD UPPER LOOPER Turn handwheel until point of upper looper W i...

Page 6: ... Front Thread Guide Auxiliary Looper Thread Eyelet Upper Looper Thread Eyelet Fig 1 Tension Nut Tension Spring i l Ferrule IITension Spring Tension Post DTension Discs _ Tension Post Slott liiiii IITension Disc Felt FJCone Support Upper Looper Thread Tube Assembly a Lower Spreader tNeedle 6 From the library of Superior Sewing Machine Supply LLC ...

Page 7: ...Tension Post Slot nTension Disc Felt iTension Thread Gu de Front Thread Guide Upper Looper Thread Eyelet mPresser Arm Fig lA 7 Presser Foot m Release Bushing Top Cover _ Needle Thread Eyelet Upper Looper Thread Tube A3sembly J Iof Upper Looper From the library of Superior Sewing Machine Supply LLC ...

Page 8: ...ecified the 39500 GB machine will be shipped with above combination of eccentrics The 39500 GC machine will be shipped with No 39540 B 60 main feed eccentric and No 39540 B 30 differential feed eccent ric Generally speaking differential right hand feed eccentri c determines number of stitches produced Main left hand feed eccentric is selected in relation to de gree and direction of stretch of mate...

Page 9: ... front needle guard as close as possible to needles without touching Screw D is used to adjust and set front needle guard After this set ting make sure there is no interference between the needle guards and differential feed dog SETTING THE UPPER LOOPER Insert upper looper A Fig 7 in its holder Screw B hol ds upper looper in its holder and permits it to be pushed in or out or turned around its sha...

Page 10: ...and 9 Fig 9 SETTING THE FEED DOGS Assemble and set the differential feed dog A Fig so that top surfaces of the feed surfaces all lay in the che cked by sighting across feed ing surface with a straight edge Feed surfaces should now be le veled with the throat plate surfaces by rotating feed tilting adjusting pin D This pin raises or lowers the back end of both feed bars at the same time The feeding...

Page 11: ...in place This will simplify resetting when upper knife is replaced SETTING THE STITCH LENGTH Length of stitch is determined by the combination of feed eccentrics used Outer left eccentric A Fig 12 actuates main rear feed dog while the inner right eccentric B actuates the differential front feed dog In assembling feed eccentrics be sure hubs are facing each Be careful not to damage shaft or key Tig...

Page 12: ...e assembly reaches its highest position STARTING TO OPERATE Be sure m achine is threaded according to diagram for your style of machine either Fig 1 or Fig 1A With thread tensions light set upper looper thread eye let N Figs 1 or 1A about horizontal and back in its front to back location Operat e machine slowly without presser foot in place to make sure that chain forms and moves off the tongue fr...

Page 13: ...f the eyelet is raised and brought too far forward however the thread becomes too tight result ing in looper thread breakage With a reasonable amount of looper thread tension to insure a flexible chain the looper thread eyelet should be adjusted to position the purl is desired FOR 39500 GB Moving the needle thread eyelet AD Fig 1 back causes less thread to be pulled from the cones as the needles t...

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

Page 15: ...5 1 20 22797 A 21 39505 AB 22 39526 AB 23 39524 AB 1 8 39524 AB 5 32 24 39524 AC 39528 AC Screw for chaining feed dog for Style 39500 GC 045 1 Main Feed Dog marked 11 AG11 rubber for Style 39500 GB 1 Differential Feed Dog rubber for Style 39500 GB 1 Throat Plate marked 11 AX 1 811 for Style 39500 GB 1 8 1 Throat Plate marked 11 AX 5 32 for Style 39500 GB 5 32 1 Throat Plate marked 11 AV11 for Styl...

Page 16: ...16 From the library of Superior Sewing Machine Supply LLC ...

Page 17: ...nd rod 1 Thread Stand Rod 1 Washer 1 Washer 1 Lock Washer 1 Nut 1 Wood Screw round head 9 x 5 8 inch long 2 Tension Post Bracket for mounting on tableboard 1 S Hook for treadle chain 2 Wrench for 9 3 2 inch nuts 1 Threading Wire 1 Thread Tweezers 1 Socket Wrench for 3 8 inch nuts holding feed eccentrics 1 Cam Extractor 1 Treadle Chain for presser foot lifter 1 Screwdriver 3 16 inch diameter 9 3 8 ...

Page 18: ...te and Multiwall Paper Bags No 263 Men s Clothing No 264 Men s Women s Children s Jackets No 265 Women s Wear No 266 Women s Wear And High Fashion No 26 7 Corsets Girdles Brassieres No 268 Children s Wear No 269 Mattresses Slip Covers Furniture Upholstery No 271 Awnings Canopies T n ts Tarps No 273 Curtains Drapes No 610 Kiipp it No 710 MCS ForMation Unit No 730 M CS A utomatic Dual Underfront Shi...

Page 19: ...UMATIC FOOT LIFTER The air operated foot lifter for use on Class 39500 machines allows the operator to raise t he foot simply by knee touching an actuating switch CHAIN CUTTER The above photo shows the small pneumatic chain cutter that is available for installation as an accessory unit on Class 36200 Flatseamers Style 2899A 6 HEAT DISPELLER Union Special s auxiliary unit arrow is an effective mean...

Page 20: ...eds promptly and efficiently Whatever your loca tion there is a Union Special Representative to serve you C eck with him today ATLANTA GA BOSTON MASS CHICAGO ILL DALLAS TEXAS LOS ANGELES CAL NEW YORK N Y PHILADELPHIA PA MONTREAL CANADA TORONTO CANADA BRUSSELS BELGIUM LEICESTER ENGLAND LONDON ENGLAND PARIS FRANCE STUTTGART GERMANY Representatives and distributors in all important industrial cities ...