UnionSpecial CLASS 63400 Instruction sheet

FINES T QUALITY
ST YLE S
63400AF
63400BF
CATALOG
No.
121AF
®
INDUSTRIAL
SEWING
LEWIS • COLUMBIA
MACHINES
CLASS 63400
STREAMLINED
HIGH SPEED LOCKSTITCH MACHINE
WITH
FEEDING PRESSER FOOT
CHICAGO
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Catalog No. 121 AF
(Supplement to Catalog No. 121 M)
INSTRUCTIONS
FOR
ADJUSTING AND OPERATING
LIST OF PARTS
CLASS 63400
Streamlined Lockstitch
Styles
63400 AF 63400 BF
First Edition
Copyright 1971
by
Union Special Machine Co.
Rights Reserved in All Countries
MACHINE COMPANY
INDUSTRIAl SEWING MACHINES
CHICAGO
Printed in U.S. A.
2
July, 1971
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IDENTIFICATION OF MACIDNES
Each Union Special machine is identified by a Style number on a name plate on
the machine. Style numbers are classified as standard and special. Standard Style
numbers have one or more letters suffixed, but never contain the letter "Z".
Example: "Style 63400 AF". Special Style numbers contain the letter "Z". When
only minor changes are made in a standard machine. a "Z" is suffixed to the Standard
Style number. Example: "Style 63400 AFZ".
Styles of machines similar in construction are grouped under a class number
which differs from the style number, in that it contains no letters. Example:
"Class 63400".
APPLICATION OF CATALOG
This catalog is a supplement to Catalog No. 121 M and should be used in con-
junction therewith. Only those parts which are used on Styles 63400 AF and BF. but
not used on Styles 63400 A and B are illustrated and listed at the back of this book.
Opposite the illustration page. parts are identified by detail number. part
number, description and amount required.
NOTE: When ordering repairparts always use the part number listed in the second
column.
Adjusting and operating instructions for Styles 63400 AF and BF are similar to
those in Catalog No. 121 M for Styles 63400 A and B respectively. The only instruct-
ions included in this catalog are the ones that are different from Styles 63400 A and
B. or are additional instructions that pertain specifically to Styles 63400 AF and BF.
This catalog applies specifically to the Standard Styles of machines as listed
herein. It can also be applied with discretion to some Special Styles of machines in
this class. Reference to direction. such as right. left, front. back, etc .• are given
from the operator's position while seated at the machine. Operating dir2ction of
handwheel is toward the operator.
STYLES OF MACHINES
High Speed Streamlined Long Arm Lockstitch Machines, One Needle, Light.
Medium and Heavy Duty. Drop Feed, Rotary Hook, Horizontal Hook Shaft, Push
Button Stitch Regulator, Stitch Length Indicator. One Reservoir Enclosed Auto-
matic Lubricating System. Head Oil Siphon, Adjustable Hook Oil Control. Auto-
matic Head Oiling. Needle Bearing Adjustable Feed Eccentric, Needle Bearin gs
for Take-up Lever and Needle Bar Driving Link, Feed Timing on Lower Main Shaft.
Equipped with Feeding Presser Foot and Rotary Needle Thread Tension, Maximum
Work Space to Right of Needle Bar 11 1/8 Inches.
63400 AF For miscellaneous plain seaming operations on light and medium weight
work, 1 9/64 inch needle bar travel. Type 180 GXS or 180 GYS needle. Specify
stitches per inch, thread size, needle type and size and edge guide. Maximum
recommended speed 5500 R. P. M.
63400 BF For miscellaneous plain seaming operations on medium and medium heavy
weight work. 1 13/64 inch needle bar travel. Type 180 GXS or 180 GYS needle.
Specify stitches per inch, thread size, needle type and size and edge guide.
Maximum recommended speed 5500 R. P.M.
3
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NEEDLES
Each Union Special needle has both a type and a size number. The type number
denotes the kind of shank, point, length, groove, finish and other details. The size
number, stamped on the needle shank, denotes largest diameter of the blade, mea-
sured in thousandths of an inch across the eye. Collectively, the type number and
the size number represent the complete symbol, which is given on the label of all
needles packaged and sold by Union Special.
Needle Type 180 GXS or 180 GYS are recommended for Styles 63400 AF and BF.
The description and sizes available are listed below.
Type No.
180 GXS
180 GYS
Description and Sizes
Round shank, round point, lockstitch, short length, ball eye, single
groove, wide angle groove, struck groove, deep spot, ball point,
chromium plated - sizes 029, 032, 036, 040, 044, 049, 054, 060.
Round shank, round point, lockstitch, short length, ball eye, single
groove, wide angle groove, struck groove, deep spot, chromium
plated - sizes 029, 032, 036, 040, 044, 049, 054, 060.
To have needle orders promptly and accurately filled, an empty package, a
sample needle, or the type and size number should be forwarded. Use description
on label. A complete order would read: "1000 Needles, Type 180 GXS, Size ". 036
11
•
Selection of the proper needle size should be determined by the size of thread
used. Thread should pass freely through the needle eye in order to produce a good
stitch formation.
SELECTING THE SIZE OF THE NEEDLE
The strength requirement of the seam produced is largely dependent upon the
size of thread employed. The quality of the work desired is largely dependent upon
the size of the needle employed.
The following table shows the preferred size of needle for a given size and kind
of thread. The choice, however, should give consideration to factors referred to
above, which may dictate the selection of a needle size slightly larger or smaller
than the size specified.
Cotton Thread
Size
0
30
36
40
50
60
70
80
90
100
Mercerized Thread
Size
4
B
A
A
0
00
000
0000
0000
Needle
Size
060
054 to 060
048 to 054
044 to 048
044 to 048
040 to 044
036
to 040
032 to 036
032 to 036
028 to 032
_,
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IDENTIFYING PARTS
Where the construction permits, each part is stamped with its part number.
Parts too small for a complete catalog stamping are identified by letter symbols
which distinguish one part from another that is similar in appearance.
Part numbers represent the same part. regardless of the catalog in which they
appear.
IMPORTANT! ON ALL ORDERS, PLEASE INCLUDEPART NAMEANDSTYLE
OF MACHINE FOR WHICH PART IS ORDERED.
ORDERING OF REPAIR PARTS
The arrangement of this catalog is to facilitate easy and accurate ordering of
replacement parts for Styles 63400 AF and BF.
An exploded view plate at the back, covers the differences between the Standard
Styles listed in this catalog and Styles 63400 A and B covered in Catalog No. 121 M.
The plate presents a sector of the machine, parts being aligned as in their assembled
position. On the page opposite the illustration will be found a listing of the parts with
their part numbers. descriptions and the number of pieces required in the particular
view being shown.
Numbers in the first column are reference numbers only, and merely indicate
the position of the part in the illustration. Reference numbers should never be used
in ordering parts. Always use the part number listed in the second column. The
exploded view plate carries a reference number for each part available for sale.
Sub-assemblies. which are sold complete, or by separate part, are in a bracket
or a solid line box on the picture plate. Component parts of sub-assemblies, which
can be furnished for repairs, are indicated by indenting their descriptions under the
description of the main sub-assembly.
USE GENUINE NEEDLES AND REPAIR PARTS
Success in the operation of these machines can be secured only with genuine
Union Special Needles and Repair Parts as furnished by the Union Special Machine
Company, its subsidiaries and authorized distributors. They are designed according
to the most approved scientific principles, and are made with utmost precision.
Maximum efficiency and durability are assured.
Genuine needles are packaged with labels marked ~ . Genuine repair
parts are stamped with the Union Special trade mark. Each trade mark is your
guarantee of the highest quality in materials and workmanship.
TERMS
Prices are strictly net cash and subject to change without notice. All shipments
are forwarded f. o. b. shipping point. Parcel Post shipments are insured unless
otherwise directed. A charge is made to cover the postage and insurance.
5
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INSTALLING
CAUTION! When unpacking, DO NOT lift machine out of box by placing one hand
on handwheel. Using both hands on bed casting, lift gently.
Before leaving factory, each Union Special machine is sewed off, inspected and
carefully packed. After the machine and accessories have been removed from the
packing box, the following steps should be followed:
PREPARATION OF MACHINE FOR INSTALLATION
A bag of assembly parts, consisting of one frf3_me thread eyelet, one eyelet
attaching screw, one extra bobbin, two hinge studs and two screws for holding
miscellaneous attachments to the bed plate, is packed with each machine.
Insert hinge studs in holes provided for them in rear of cloth plate. Assemble
the upper frame eyelet (A, Fig. 2A).
STANDARD
ACCESSORIES
Included also with each machine, is a box of STANDARD ACCESSORIES--contain-
ing one bobbin winder assembly, the machine mounting frame, one oil drain jar and
its clamp spring, one knee lifter assembly and its rubber pad, bed positioning spring
and screw, four isolator pads and clips, and one machine rest pin. These parts are
essential when setting up the machine.
TABLE TOPS
Lockstitch machines are installed in table tops, prepared with cut-out, so that
the bed plate is FLUSH with the top of the machine mounting frame.
MACHINE MOUNTING FRAME INSTALLATION
On a sui~abl . e tableboard, place machine mounting frame (21393 N) in the machine
cut-out with the hinge lugs to the rear (Fig. 1). Insert the countersunk wood screw
through left hinge pad and tighten securely. Assemble bed positioning spring (63474 A)
over right hinge pad; insert round head wood screw and tighten securely. Assemble
the retaining plate (21393 R) to outside front of pan section, as shown, and snug up
nuts lightly.
Place sewing head in the frame mounting, and after being sure there is about
1/16 inch clearance between the cloth plate edge and the frame sides, rap the re-
taining plate smartly upward with a hammer to insure a good grip on the underside
of the board and tighten locking nuts securely.
Tip machine back against rest pin, and assemble the knee press assembly as
shown. All end play of the cross shaft should be taken up by the cone bearings, but
must not bind.
6
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MACHINE MOUNTING FRAME INSTALLATION (Continued)
Before the machine is put into production, the bell crank (21665 J) of the knee
lifter rod should be adjusted. The left stop screw (22597 F) should be set so that the
maximum lift of the presser bar and its parts do not interfere with moving parts with-
in the head. This may be done by setting the stop screw so that the presser bar
raises approximately 5/16 inch.
BOBBIN WINDER
The bobbin winder should be secured to the table top so that its pulley will be
located directly in front of the sewing machine belt and will bear against the belt when
in operation. The base of the winder has two elongated attaching holes, which allow
the mechanism to be moved closer to or farther away from belt as needed. The
pulley of the winder, when in operation, should exert only enough pressure against
the belt to wind the bobbin. Regulation and operation of the bobbin winder is described
under "Winding the Bobbin", under OPERATOR'S INSTRUCTIONS, in Catalog No.
121 M.
BELTS
These machines are equipped to use either #1 "Vee" or round belts.
THREADING
Thread machine as indicated in Fig. 2A. Check spring threading with dimension-
al requirements. has been enlarged for clarity and described under paragraph on
"THREAD CONTROL". Needle is threaded from left to right.
6347 6
' }16630
21393N
660- 168
Fig. 1
7
\ '- 651 - 16
"'- 2 13 93S
61 4 77
6 3476 C
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OILING
CAUTION! Oil has been drained from the main reservoir before shipment and
the reservoir must be filled before starting to operate.
Fill main reservoir at plug screw (B, Fig. 2A) and check oil level at gauge (C);
oil is at maximum level when needle is in yellow band marked "FULL". Oil should
be added when needle is in yellow band marked "LOW". Use a stainless water-white
straight mineral oil of a Saybolt viscosity of 90 to 125 seconds at 100° Fahrenheit
in the main reservoir. This is equivalent to Union Special specification No. 175.
Oil may be drained from main reservoir by removing plug screw located on the
left in the oil reservoir cover.
The quantity of oil supplied to the hook is controlled by dial located on the front
of the machine just below the cloth plate. Turning the dial in the direction of the
arrow (counterclockwise) increases the oil flow and in a clockwise direction decreases
the flow of oil.
It is recommended that a new machine, or one that has been out of service for a
long period, be lubricated by removing the head cover and oiling all the moving
parts. After oiling, replace head cover as no further hand oiling will be required.
Run machine slowly for several minutes to distribute oil to the various parts. Full
speed operation can then be expected without damage.
WR AP THREAD AROUND
ROTARY TENSION DISC
2 1/2 TURNS CLOCKWISE
THEN THREAD TENSION
POST EYELET
Fi g. 2A
8
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INSTRUCTIONS FOR MECHANICS
The adjusting instructions for Styles 63400 AF and BF are the same as for Styles
63400 A and B covered in Catalog No. 121 M, with the additions as follows:
TO SET THE FEED TIMING
NOTE: The feed eccentric timing line to
be set at "9 ".
To reset the feed timing, remove
needle and large plug screw located below
the oil gauge. Loosen the lower sprocket
screws through the hole below the oil
gauge. Turn the handwheel until the
needle bar is at the top of its stroke.
Hold the handwheel securely and turn
the lower main shaft until the timing
mark "9" on the adjustable feed driving
eccentric lines up with the timing line
on the bed casting wall. Retighten the
screws in the lower sprocket, being
sure that there is no end play in the
lower main shaft. Recheck the hook tim-
ing.
ADJUSTING FEED MECHANISM
The feed dog must be centered in the
feed slots of the throat plate and leveled
in both directions, across the line of
feed as well as in the line of feed. It
should rise approximately 3/64 inch
above the throat plate at the top of its
stroke. To change the stitch length, press
plunger (located in the bed base to the
right and rear of needle bar) in firmly.
While holding plunger down, turn hand-
wheel in operating direction until stitch
regulating finger is felt to drop into the
slot of feed eccentric. Continuing to hold .
plunger down, turn handwheel in opera-
ting direction to increase the stitch length
and in opposite direction to decrease the
stitch length. Release plunger.
Stitch lengths are indicated by g rad-
uations on the indicator dial and are vi e w-
ed through the window in the belt guard
next to the handwheel.
Fi g. 16A
ADJUSTING THE FEEDING PRESSER FOOT
Adjust the presser spring regulator (A, Fig. 16A) so that approximately thr ee (3)
threads are visible above the bed casting.
9
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ADJUSTING THE FEEDING PRESSER FOOT (Continued)
Back off stop screw (B) in feeding presser foot. With the presser foot resting
flat on the throat plate and feed dog down, adjust stop nut (C. Fig. 16A) until the
adjusting lines on the presser foot bottom, line up with the centerline of the needle.
Tighten lock nut (D).
Fig. 16B
Loosen screw (E. Fig. 16A) in presser bar guide (F), while holding down on
presser bar (G), depress presser foot lifter lever and retighten screw (E). Release
lifter lever.
Set the presser bar connection (A. Fig. 16B) so its top surface is 5 1/8 inch
above the throat plate seat (See Fig. 16B). This is accomplished by tipping the
machine back against the rest pin. loosening the lock nut and relocating the stop
screw in the lifter lever bell crank (61468 F). By turning the stop screw to the right
or left, the proper setting for the presser bar connection is accomplished. Retighten
the lock nut to lock the stop screw in place. Release pressure on presser spring as
required to reset the presser bar guide (F. Fig. 1) allowing a 1/16 inch space between
the guide and presser bar connection. be sure the presser foot is in alignment with
the needle before tightening screw (E).
Remove nut (A. Fig. 18C) and presser spring (B) of the feeding presser foot and
adjust stop nut (C) so that when the presser foot is pushed forward. the rear of the
needle slot will not touch the needle. Lock in position with lock nut (D). Replace
10
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