Consew 206RBL-30 Manual

CONSOLIDATED SEWING MACHINE CORP.
L INDUSTRIAL SEWING 8 CUTTING EQUIPMENT
INSTRUCTION
MANUAL
206RBL-30
Setting up the machine - «..=een=emvanaanonvernanaundodravrarnmocnadnsvonaaonednese rsanaaa ana ]
Breaking-in & Direction of TOtation «= « «+=» «rs e etree iiie iene, e... 1
OUT LEO 2
Needle -..... Ce ee ee ee Re Ad A Re ee a RER A aa a a aa aa aa a a 4
Thread. .......e..0rercene dan nedereneeoonnenaocanaranca as aa ea aa aan 4
Winding the lower thread on the bobbin «++ ++..222 00e ace es ane aan een aa nan 5
Adjustment of the bobbin winder ---............. eee, RES 5
Removing and inserting the bobbin --...… aa ee ee end aa ana anna 6
Threading the machine... PT 7
Regulating the thread tensions --.-——_—e=eresrrverarrer arena az eorrenrrearorennenemen 8
Adjusting the lift of the alternating presser feet... .......... ois. Cee n 06 9
How to re-set the safety clutch mechanism... . cco i i a a a a eee a a see a ae Lee 9
Extra slotted needle plate -............... I ee treet aan eee aaa 9
Adjusting the height of the feed dog ++:+1++000r hr ane aan s es FU a 10
Relative position of the feeder to needle plate «+ «+c eve ee inven nes 10
The position of the needle and the needle hole of the feeder - - - - - - ee 11
Timing the needle with feed dog «+--+ - - fee eee ere, 12
Adjusting the height of the needle bar ++-+++++++00000000 00ER KR LER 13
Timing between the hook and the needle: «++ «=v verre ene eiir iii iain. 14
Adjustment of bobbin Case OPENEr «++ «vx rt rtrsrrernrerirasieaieeeennenaneeinna.]d
Adjusting the height of the presser feet « + - + +++ 10000 eee eee ee ea ae ea a eee ee 15
Timing of the vibrating presser foot + --<-++++00000 eee eee. PS 16
Adjustment of the clearance between feed forked
connection and feed fork collar ----...220000 044 ttt tenes ect eae. 16
Adjusting the thread controller spring 1125 a a su ua ue 1 2 0 1 2 4 1 6 0 0 0 en 4 11 0 4 8 2 4 40 3 8 3 0 81 a 0 0 17
Adjustment of spring tension of safety clutch - +--+ oven 06 18
Supplementary information on oiling 12 12 0 1 48 342 à a ae mae acm mar eee 4 4 4 6 a 5e 244 6 19
SETTING UP THE MACHINE (Fig. 1)
Before setting up the machine on the table, attach the relative parts to the table.
(1) Stand and treadle (2) Motor (3) Oil pan (4) Hinge
(5) Maching head (6) Knee lifter (7) V belt
(8) Bobbin winder (9) Cotton stand’ (10) Prop
Fig. 1
BREAKING-IN & DIRECTION OF ROTATION
To assure durability and trouble-free operation, it is imperative that for the first
several weeks of operation the maximum speed is held to no more than 2000
RPM in order to allow the parts to become properly broken in.
In operation the handwheel of the machine always turns toward the operator.
To avoid tangled threads and jamming of the sewing hook, do not turn handwheel
otherwise.
SPEED
Maximum operating speed after a break-in period is 2400 stitches. per minute
depending, of course, on the type of material being sewn, its thickness and that of
the seams being crossed.
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OILING
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NEEDLE (Fig.7)
CONSEW 206RB is set up to use standard style DPx17. The size of the needle to
be used should be determined by the size of the thread, which must pass freely
through the eye of the needle.
HOW TO ATTACH THE NEEDLE
I. Turn the machine pulley over toward you until the needle bar(1) moves up to its
highest point. |
2.Loosen the needle set screw(?) and put the needle 3 up into the needle bar as
deeply as it will go, with the long groove of the needle faces the left.
3. Tighten the needle set screw securely.
Fig.7
TEREAD
Cotton,synthetic or silk thread can be used according to your purpose.
* Always use left twisted thread for upper (needle) thread, but you can use either
right or left twisted thread for lower (bobbin) thread.
WINDING THE LOWER THREAD ON THE BOBBIN (Fig.8)
l.Push a bobbin on the bobbin winder spindle®) as far as it will go.
2.Pass the thread from the thread stand downward through the eye (1) in the tension
bracket, then between and around the back of the tension disc),
3.Bring the thread forward toward the bobbin and wind from below in clockwise
direction several times around the bobbin.
4.Push the lecer @ toward the other side so that the pulley and V belt (DFig.1)
Will engage and then start the machine. |
5.The pulley will automatically be free from the belt and stopped after the bobbin is
filled with thread.
THE ABOVE OPERATION CAN BE DONE WHILE SEWING.
ADJUSTMENT OF THE BOBBIN WINDER
LIN CASE OF UNEVEN WINDING:
If the thread does not wind evenly on the bobbin, loosen the screwO) in the tens-
ton bracket and move the bracket to the right or to the left as may be required,
then tighten the screw(®). о
2.WINDING AMOUNT OF THREAD:
Adjustment screw®) can be turned in or out to increase or to decrease the amount
of thread wound on the bobbin.
3.WINDING STRENGTH: |
Strength of the winding can be adjusted with the nut(?).
Fig. 8
REMOVING AND INSERTING THE BOBBIN
1.Lift the needle bar to its highest point, place the feed dog at this side in its trave!
turning the machinde pulley, and open the slide plate (A, Fig.2)
2.Pass left hand under table into opening on drip pan. With left thumb and index
finger, open the hinged latch (C,Fig.4) . And pull bobbin case and bobbin from
rotary hook. While the latch is held open, the bobbin will be retainde in the bobbin
case. Release of the latch and turning of the open side of the bobbin case down-
ward will cause the bobbin to drop out. |
3.Hold the bobbin between the thumb and the forefinger of your right hand and pull
outa length of about Sem of thread. Holding the bobbin case in your left hand
turn the open side up and place the threaded bobbin into it. (Fig,9)
4.With the right hand guide the thread into the slot in the edge of the bobbin case.
Then pull the thread to the left, under the tension spring (O),Fig.9) and into the
delivery eye . In order to keep the bobbin from dropping out of the case when itis
turned with the open side down, always keep the hinged latch (C,Fig.4) at the front
of the bobbin case open. |
5.Take the threaded bobbin case by the latch (C,Fig.4) and place it on the center stud
of the bobbin case holder.Release latch and press bobbin case on to center stud until
the latch catches the undercut thereon with a click that can be heard. Permit about
Sem of bobbin thread to hand down freely. Be sure to push the slide plate to the
right before starting to sew.
Fig. 9
THREADING THE MACHINE (Fig. 10)
1.Raise the needle bar to its highest point and lead the thread from the thread stand
the following order:
From the thread stand lead the thread from back to front through the lower guide
hole in pin(1) on top of the machine arm, then again from right to left through the
upper guide hole in this pin. Pass thread in weaving fashion through the three holes
in guide@), and from right to left over and between the tension discs(3). Now pull
thread downward and from right to left beneath and around thread controller(4),
contine to pull thread upward against the pressure of the wire spring into the fork
©), in the thread controller. Guide upward through the point of controller discs(®),
and thread guide(?),and from right to left through the eye in take-up lever® , down
through thread guide”), again and theh through®@@ and from left to right through
the eye of th needle ©.
2. After the above theading, hold the end of thread with your left hand, and turn the
machine pulley with your right hand so that bobbin thread may be picked up by
needle thread. And put their ends of thread back through under the presser foot for
starting operation.
TO REMOVE THE WORK
Raise the needle bar to its highest point, lift the presser foot and draw the fabric back
and to the left. Cut the ends of the threads a few centimeters.
REGULATING THE THREAD TENSIONS
For ordinary stitching, the tension of the upper and the lower threads should be equal
so as to lock both threads in the center of the material.
Solace perfect stitching ——
If the tension on either thread is stronger than on the other,imperfect stitching will be the
result. If the tension on the upper thread is greater than that on the lower thread, it will
lie straight along the upper surface of the material.
EEE Tight tension of needle thread
If the tension on the lower thread is greater than that on the upper thread ,the lower
w
A
thread will lie straight along the underside of the material.
aa ra a RE === Loose tension of needle thread
1. Tension of the Upper (Needle) thread: .
Before adjusting the tension of the upper (needle) thread, be certain that the presser
foot is let down and not in lifted position. |
To adjust tension, turn serrated nut (A,Fig.10)on tesion device to the right to increase
tension and to the left if you desire to decrease it.
2. Tension of the Lower (Bobbin) thread:(Fig.9) |
The lower (bobbin) thread tension is controlled by the larger screw "A" (Fig. 9) near
“the end of the spring at the outside of the bobbin case.
Turning this screw to the right (colckwise will increade the thread tension , while
| turning it to the left (counter-clockwise)will decrease it.
ADJUSTMENT OF THE PRESSURE ON THE MATERIAL (Fig.3)
The pressure of the presser feed is adjusted by the screw (D,Fig.3) with screw driver.
To increase the pressure, turnthe screw to the right and to left if you desire to
decrease it.
Adjusting the stitch length (Fig.12)
While pressing the stopper@) , turn the stitch length dial@)
to the left and right to align the stitch length number with
the reference line on the stopper@).
* The larger the number, the longer the stitch length will
be. |
* When turning the stitch length dial (D) from a larger set-
ting to a smaller setting, 1t will be easier to turn the dial
if the reverse stitching lever(3) is pushed to the halfway-
down position.
Fig. 12
ADJUSTING THE LIFT OF THE ALTERNATING PRESSER FEET (Fig.13 )
The thickness of the material sewn should control the height of the lift of the altern-
ating presser feet. The lift should be just enough for clearance of the material.
I. With normal adjustment both feed lift to equal height: =
To alter lift, loosen the wing nut(1) and move the link and stud assembly along the
slot-move up to raise the feeding presser foot and push down to lower this foot.
Tighten wing nut upon completion of adjustment.
- However, some materials may require unequal height of lift.
2.When altering the lift of the lifting presser foot (A,Fig.7) unequally against that of
the vibrating presser foot(B,Fig.7)or vice versa, see the instructions
“ADJUSTING THE HEIGHT OF THE PRESSER FEET” .
HOW TO RE-SET THE SAFETY CLUTCH MECHANISM
The sewing hook and its mechanism are proLected by a safety cluth.
If it should become necessary to re-engage the safety clutch, depress button (E, Fig.2)
in the bed plate of the machine. At the same time, turn machine pulley until the
locking mechanism re- engages the drive shaft beneath the bed of the machine. Open
bed slide plate and rock the machine pulley back and forth to remove any foreign
matter which may have lodged itself in the hook. Do not use any sharp-edged tools,
ets., Lest the hook be damaged.
EXTRA SLOTTED NEEDLE PLATE (You will find this in accessories box.)
(OPTIONAL EQUIPMENT)
If you put this extra slotted needle plate,you can use this machine without a feeder
for sewing leather, vinyls,etc. without visible marks.
Qo
ADJUSTING THE HEIGHT OF THE FEED DOG
The maximum height of the feed dog((D,Fig.14) from the surface of the needle plate
(@,Fig.14)is normally Imm. ny
To adjust this height: bl
1.Lay down the machine head 4 E
toward the other side,and
turn the machine pulley so
as to raise the feed dog to
its highest point.
2.Loosen bell crank screw N |
(F, Fig.5)and adjust the NA | |885 д Feed dog
height of the feeder by \ ~~ 32
raising or lowering it,
3.Securely tighten the screw L
upon completion of
— mm
adjustment. > O Needle plate
Feed dog Imm Needle plate
RELATIVE POSITION OF THE FEEDER TO NEEDLE PLATE
| Place the feed regulating dial(@),Fig.12)on the minimum position.
2.l'urn the machine pulley so as to raise the feed dog to ita highest point.
3.Lay down the machine head
toward the other side, and
loosen the screw (I,Fig.5) |
4.Adjust to be 32. 1mm from
the edge of the needle plate
to the center of the needle
hole on the feed dog
(see Fig. 15)
5.Securely tighten the screw
32. 1mm
Fig. 15
-40-
ITION OF THE NEEDLE AND THE NEEDLE HOLE OF THE
THE PO
FEEDER
Turning the machine pulley to lower slowly the needle bar,check whether the needle
descends to the center of the needle hole of the feeder or not . (Please check again the
needle is perfect one.)
If the needle does not enter into the center of the hole; —
1.Remove the cover(G,Fig.3)and loosen the screw( (D,Fig. 16 )slightly.
2.Holding the bottom of the needle bar rock frame ( H,Fig.4), move it as may be
required to get the correct position to the feeder.
3.Tighten the screw and close the cover —
11.
TIMING THE NEEDLE WITH FEED DOG
It 1s important that the timing relationship between the needle on its downward
stroke and the feed dog movement is maintained at all times. When the scarf of the
‘needle on the downward stroke reaches the top surface of the feed dog, the feed dog
movement must start.
When adjustment is required, use the following procedure to change the position of
the cam (®),Fig .17):
l.Open cover plate (D, Fig .17)and loosen two screws(©,Fig.17). |
2.Normally put the arrow mark of the cam (®,Fig.17) on the V ditch (©,Fig.17)
of arm shaft (®),Fig.17). |
3.As fine adjustment, turn the machine pulley to place the needle at Imm up from its
lowest point and pushing the stitch length regulating lever (®),Fig.12) up and
down, turn the cam (®,Fig.17) and set this at the point both the needle and the
feeder rest.
-12-
ADJUSTING THE HEIGHT OF THE NEEDLE BAR (Fig.18)
When the needle bar is at its highest point, normally the measurement between
the surface of the needle plate and the upper end of the needle eye 1s 22.3mm.
(Fig. 18)
You can also adjust this at its lowest point. In this case,
normally the measurement between the surface of the
needle plate and the upper end of the needle eye 1s
11mm. | |
To adjust this, loosen the screw (J,Fig.4)and raise or
lower the needle bar as may be required. Then, tighten
the screw upon completion of adjustment.
NOTE: These measurements are
| 4 | approximate standard,according-
22.3mm ly, following final adjustments
| “TIMING BETWEEN THE
| ' HOOK AND THE NEEDLE”
Fig. 18 - are recommended.
TIMING BETWEEN THE HOOK AND THE NEEDLE (Fig.19)
After setting the needle bar height, set stitch length to minimum, turn the machine
pulley toward you until the needle bar reaches its lowest point.
Continue turning and allow the needle bar to rise about 2mm while on its upward
stroke. With needle bar in this position, the point of the sewing hook should be at the
center of the needle,and normally, the measurement between the hook point and the
upper end of the needle eye should be 2.4mm, further the clearance between the hook
point and the needle hollow should be about 0.05 to 0. 1mm.
1.If the sewing hook should not be timed correctly, loosen the three setscrew
(K, Fig.5). Turn the hook shaft to aligh the hook point with the center of the needle.
Re-tighten the three set screws and re-check the timing of the sewing hook.
2. To adjust the clearance between the hook point and the needle hollow, loos-
en the two screws((1), Fig.
\ 20) and move the hook to
the right or to the left as
may require. Please note
one of the two screws is
placed onthe V ditch of
hook shaft. Therefore,
keep the screw on V ditch
during adjustment.
Re.tighten the screws.
2mm
o
0.05-0.1mm
чб
Fig. 19
-13.
ADJUSTMENT OF BOBBIN CASE OPENER
(THREAD RELEASE FINGER) |
The bobbin case opener facilitates the passage of the needle thread loop by slig-
htly nudging the bobbin case holder creating a slight rotating movement of same.
This movement at that very instant opens a clearance gap between the notch on
the bobbin case holder and the tab of the hook retainer permitting the needle th-
read loop to be drawn easily through the gap.
I) Clearance between the opener and projection of hook (Fig.20 and 21):
1.Loosen the screw (@), Fig. 20)
2.Adjust the clearance between projection of hook (D), Fig. 21) and the opener
(@, Fig.21) by means of movement of thread releasing shaft bushing (G),
Fig. 20 ) tothe right or to the left as may be required. The standard cleara-
nce between the two parts is 0.8mm as shown Fig. 21.
3. Tighten the screw (®), Fig. 20) securely.
II) Position of the opener cam:
Place the one of screws (@), Fig 20) whichis indicated by E on V ditch of the
hook shaft.
II) Adjustment of operation: (Fig. 20 and | 22)
I. Turn the machine pulley until the opener (©), Fig. 22) presses the projection of
hook (9), Fig. 22) extremely on its travel.
2. Press the opener to the projection of hook and make the right side clearance
between the notch on the bobbin case holder and the tab of the hook retainer
(3), Fig.22) 0.2mm as shown Fig. 22
3. This adjustment can be done by loosening the screw (©,Fig. 20)
&
~ ADJUSTING THE HEIGHT OF THE PRESSER FEET
1. Adjustment by the presser bar lifter:
Loosen the screw((D, Fig.23) sufficiently, raise the presser bar lifter and loosen
the set screw ((@, Fig.23). Move the lifting presser foot (A, Fig.7) up or down
as may be required so as to get the correct height and tighten the screws.
2. Adjusting the lift of alternating presser feet:
If the height of the lifting presser footchanges,the momentums of the lifting
and vibrating presser foot vary, thus the height of the vibrating presser foot
must be adjusted. |
To adjust this, lower the presser bar lifter, holding the vibrating presser foot (B,
Fig.7) and loosen the hexagon screw ( @), Fig.23 )and move the presser foot
up or downas may be required. After setting the position, tighten the screw.
TIMING OF THE VIBRATING PRESSER FOOT
This is the normal timing when turn the machine pulley toward you, after loweri-
ng the presser bar lifter, the vibrating presser foot should reach the feeder earlier
than the needle eye comes to, and when the needle raises , the vibrating presser
foot should leave the feeder after the needle eye has left the feeder.
This is due to the reason that the vibrating presser foot must tightly hold the go-
ods while the needle is passing the goods for avoiding irregular stitches.
To adjust this, set the lift of thre alternating presser feet to equal, loowen the two
screws (4), Fig. 23) and adjust the rotating position of the cam (6), Fig.23) faster
or slower as may be desired, and tighten the screws.
Fig. 23
15.
ADJUSTMENT OF THE CLEARANCE BETWEEN FEED FORKED
CONNECTION AND FEED FORK COLLAR |
Incorrect clearance between the fork (@, Fig. 17) of feed forked connection and
feed fork collar (©), Fig. 17) will bring irregular stitch length or overheating, etc.
To ajust this, open the cover plate ( (1). Fig. 17).
1. To increase the clearance, loosen the screw (7), Fig. 17) and turn the screw (©),
Fig. 17) to the left or counter-clockwise.
2. To decrease the clearance, loosen the screw (6), Fig. 17) and turn the screw ( 7),
Fig. 17) to the right or clockwise.
This adjustment should be done with turning the machine pulley toward you to
get correct clearance.
Upon completion of adjustment, tighten the screw which is loosened to touch the
feed fork.
16 .
ADJUSTING THE THREAD CONTROLLER SPRING
Normally, the thread controller spring ( M, Fig.24) should hold slack of the upper
thread until the needle reaches to the goods , and it should pause while raising of
the needle and passing of the upper thread through the bobbin case.
I) For more controller action on the thread:
Lossen the stop screw ( (9), Fig. 24), move the stop (O), Fig. 24) to the right
(For less action, move it to the left). T ighten the screw.
11) To adjust the tension of the spring: |
Loosen the serrated nut (4), Fig. 24) and the screw (O), Fig. 24).
Turn the tension stud (O), Fig.24) slightly to the leftto strengthen the tension
(to lighten the tension, turn to the right) witha screw driver. Tighten the screw
and nut upon completion of adjustment.
ADJUSTMENT OF SPRING TENSION OF SAFETY CLUTCH (Fig.25)
The sewing hook and its mechanism are protected by a safety clutch. If it should
become necessary to adjust the spring tension, use the following procedure:
1. Depress the button (E, Fig. 2) in the bed plate of the machine with your left
hand. At the same time turn the machine pulley strongly so that the safety clu-
ich disengages. |
2. Lay down the machine head toward the other side . Hold the safety clutch (left)
(D and turn the safety clutch (right) 6) until you can see the screw @ through
the hole®. | | a
3. To strengthen the tension of spring ©, turn the screw @ to the right, while to
lighten the tension, turn the screw to the left.
4. Upon completion of adjustment, dépress the button (E, Fig.2). At the same time
turn the machine pulley until the safety clutch re-engages.
Fig. 25
18 -
SUPPLEMENTARY INFORMATION ON OILING FOR MODEL 206RB-1
For simplified lubrication the upper arm of the machine is fitted with a centraliz-
ed lubricating system. Same is located beneath the arm top cover plate . Swing
open this plate (Fig.Dand a felt-filled reservoir “R” Will become visibole. Before
operating a new machine or one which has been standing idle for a prolonged pe-
riod of time, soak these felt pads with oil until it will be noticed that they have
become fully saturated and do not accept any additional quantities. After that the
only attention required is a shot of oil into the holes in the arm top cover ,when-
ever the machine is oiled as part of the daily routine.
An oil reservoir for lubrication ‘the rotary sewing hook is provided at the unders-
ide of the machine bed. (Fig.II) Unscrew the filler plug and fill the reservoir with
oil until it reaches the red “Full” line. Replace the filler plug and tighten it. The
flow ofoil to the hook can be regulated by means of the control valve “у” . To
increase oil flow, loosen the lock nut and turn screw counter-clockwise two or th-
ree turns. To reduce oil flow, loosen lock unt and tighten screw clockwise compl-
etely and back it off about 3 turns. To stop oil flow, if so required, just tighten
screw. Be sure to tighten lock nut without changing setting of screw.
Fig II
131 WEST 25TH STRE ET NEW YORK NY 10001 A
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