background image

Since 1858

Since 1858

 

www.Campbell-randall.com

1

 

R

andall

 

UnIOn

 

lOck

-

stItch

General Information

Description

The UnIon lock-Stitch Sewing Machine is a straight needle 

and awl sewing machine for stitching heavy materials.

Characteristics

• 

feed: 

needle feed, Jump foot. 

• 

Speed: 

The maximum speed recommended for 

the UnIon is 800 stitches per minute. Maximum 

speed is limited to the type of material being sewn. 

It is recommended the machine run slower than 

the maximum speed to insure operator control 

and longevity of the machine. we cannot warranty 

machines or parts that are damaged due to excessive 

speed.

• 

Work Capacity: 

 The machine operates on all 

thickness of leather and other materials up to ¾ inch.  

The throat of the machine is 12 inches, and can sew 

a row of stitching 12 inches from the edge of any 

material. 

• 

Bobbin: 

 The bobbin is extra large and carries 100 to 

150 yards of thread, requiring few bobbin changes. 

• 

Stitch Length: 

 4 to 12 stitched per inch

Applications

• 

Boot & Shoe Industry 

: fair stitching, moccasin seam or 

any flat sole work. 

• 

Harness & Tack

 : for stitching all kinds of harness, 

belting, and strap goods up to 3/4 inches thick. 

• 

Sporting Goods

 : used by leading manufacturers for 

stitching footballs, basket balls, volley balls, and soft balls. 

It is noted for pulling a very tight seam.

General Advise

T

O

 e

NSURe

 P

eRFeCT

 A

CTION

 

OF

 

The

 M

AChINe

• Do not operate the machine before lubricating it.

• Do not run the UNION in reverse. The machine hand wheel should 

run counter-clockwise if you are facing the wheel.

• Use caution and give proper attention to the operation of your 

machine when sewing

• Keep your hands away from the needle and awl when the power is 

on and the machine is in operation

• Keep your hands away from all moving parts, nor place anything 

close to them while operating the machine

• Do not make any adjustments or service the machine with the 

power on.

• Do not run the machine with the presser foot resting on the needle 

plate without material under the presser foot.

• Let the machine do its own feeding. Do not force material into or 

way from the machine or you may bend or break a needle or awl.

• Do not crowd, retard or twist the work when sewing

• Do not run the machine with bobbin case and thread eye threaded 

unless there is material under the presser foot.

• Have the machine in proper adjustment at all times

• Use good quality thread

• Keep your machine cleaned and well oiled

• Study this instruction book and become familiar with all parts of 

your machine

• After receiving the machine, make sure all screws remain tight. 

GeNerAL INforMAtIoN

please read this Instruction Manual carefully before using your machine in order to guarantee

reliable operation and a long life. Refer to this Manual often for questions and adjustments.

Direction operation: 

Always run the hand wheel toward the operator, that is to 

turn the wheel counterclockwise if you are facing the wheel. 

never attempt to sew with the machine in reverse (clockwise) 

rotation, or damage to the machine or material will result. The 

UnIon is not capable of sewing in reverse, but back stitching 

can be done by lifting the foot and crossing over the previous 

stitches. 

Summary of Contents for UNION Lockstitch

Page 1: ...UNION Needle and Awl Lock Stitch Sewing Machine Serial Number _______________ Manufactured by Randall Leather Machinery Company 401 Irvine Street Yoakum Texas 77995 USA 1 800 327 9420 or 1 361 293 701...

Page 2: ...mence Sewing 7 ADJUSTMENTS SERVICING Common ADJUSTMENTS 8 OILING CLEANING 8 PRESSER FOOT ADJUSTMENT 9 THREAD Lock 10 THREAD TENSION 10 STITCH LENGTH 10 THREAD Guide ADJUSTMENT 11 Looper Cam ADJUSTMENT...

Page 3: ...wise if you are facing the wheel Use caution and give proper attention to the operation of your machine when sewing Keep your hands away from the needle and awl when the power is on and the machine is...

Page 4: ...ghten the belt tension be lowering the motor with the adjustable motor bracket Lock the motor into postion with the bracket nuts once the fire tension is acheived Pedal Linkage Connect and adjust the...

Page 5: ...wax pot up to the the machine casting and lock in place with the clamping nut Presser Foot Spring Place the upper bracket and spring on top of the machin head With the left hand compress the coil spr...

Page 6: ...is sharp and does not spring or glance off the work when entering the work Synthetic Twisted Natural Cord Needle Size 138 3 cord 1 to 1 1 2 207 4 cord 1 1 2 to 2 277 5 cord 2 1 2 to 3 346 6 cord 3 to...

Page 7: ...he threading wire UL 531 through the wax pot extension and pull the thread through 7 Fig 1 Turn the hand wheel to get access to the lock UL 145 Put the threader through the lock UL 145 grab the thread...

Page 8: ...UL 291 over the bobbin and close the bobbin door Make sure that a length of thread is pulled out of the bobbin door between the spring and the door latch Removing the Bobbin Release the cover latch an...

Page 9: ...consistent even stitch NOTE The machine may be in perfect adjustment and still fail to sew satisfactory if the operator is careless in handling the work or does not adjust the machine to accommodate...

Page 10: ...tion of Common Adjustments Allowing that a machine is in good condition from a standpoint of wear and lost motion a quick check up of the essential settings can be made in the following order Check th...

Page 11: ...rm UL 116 on the top left of the machine if the operator is sitting in front is turned with the 2 screws facing to the left of the machine To make the foot lift higher loosen the inside screw UL 117 a...

Page 12: ...n obtained when the thread pulls out easily with light tension without excessive binding It is recommended to use less tension when working with threads made of natural fibers To give more tension on...

Page 13: ...elay the thread by loosing the screw in the take up cam and moving the screw to the top The looper should hold the thread until it has descended into the material If not the thread would fall off the...

Page 14: ...wl are not bent When the needle and awl are perfectly aligned the needle should comes up through the material without flexing or hitting the sides of the awl hole To see the alignment set a piece of p...

Page 15: ...hat the set screws are both over the flat spots on the shaft which may require the removal of the set screws to locate which are 90 to each other Tighten one set screw then recheck the timing If this...

Page 16: ...the needle when the needle is on the way down and level with the hook point At this position the hook is about to enter the loop When the Take Up UL 135 is at its highest position the point of the ne...

Page 17: ...pointing straight down the thread looper UL 180 is just about to pick the thread Move the hand wheel until the take up is about to desend In this position the Thread Guide UL 165 takes the thread into...

Page 18: ...tretch or excessive coiling especially near the end of a spool 4 Needle not casting off thread after shuttle picks up loop Check needle timing and its position in relation to the shuttle point 5 After...

Page 19: ...ng lever is worn broken or adjusted improperly 2 Check the Presser Foot Bar Spring or weakness or break age 3 Check the lift of the presser foot bar There should be a 1 8 lift at time of feeding work...

Reviews: