UnionSpecial 60000 D User manual

LEWIS • COLUMBIA
NEST QUALITY
INSTRUCTIONS
CLASS
60000 ADJUSTING
STYLE 60000 D
CATALOG
No.
87A
INDUSTRIAL
SEWING
MACHINES
Ij/ltUOn^pCCUcdL MACHINE COMPANY
CHICAGO
From the library of: Superior Sewing Machine & Supply LLC

Catalog No. 87 A
ADJUSTING INSTRUCTIONS
CLASS 60000
Style
60000 D
First Edition
Copyright 1945
by
Union Special Machine Co.
Rights Reserved in All Countries
MACHINE COMPANY
INDUSTRIAL SEWING MACHINES
CHICAGO
Printed in U.S.A.
September, 1968
From the library of: Superior Sewing Machine & Supply LLC

ADJUSTING INSTRUCTIONS
FOR
STYLE 60000 D
DESCRIPTION OF MACfflNE
60000 D Flatbed, single needle, chain stitch Type 101,
for closing small filled paper bags on Style 21800 N,
with two paper reinforcing tapes, one guided next
to presser foot and the other next to feed dog, seam
Type SSa-1, round belt drive, trimming mechanism
for top of bag, automatic cutter severing tape
between bags, stitch range 5 to 8 per inch.
Needles for machine Style 60000 D are Type 924
and are available in sizes .049, 054, 067, 073 and 080.
The size ofthe needleshouldbe determined by the size
of the thread. The thread should pass through the
needle eye freely.
The following instructions apply to the machine as
it sets in front of the mechanic on a repair table with the
pulley to the right, and the needle bar in a vertical
position.
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HOOK AND HOOK SHAFT
Insert a needle of the size required as far up in the
needle bar as it will go with the scarf or spot toward the
pulley end of the machine. Tighten the clamp nut. Wrench
No. 116 is available for this purpose.
Fig. 1
The hook should be placed in the hook shaft so that
the set screw (A, Fig. l) in the shaft bears against the
flat (B) on the shank of the hook and the set screw should
be firmly tightened. With the needle bar in its lowest
position^ the hook should be set so that
its point is 3/16 inch from the center of
the needle (Fig. 2). Gauge No.21225-3/16
can be used advantageously in making this
adjustment. In order to obtain the above
setting when the hook is out of adjustment,
it becomes necessary to re-time the hook
shaft.
In re-timing the hook shaft, the two
screws (C,D, Fig. 1) in the hook shaft
coupling should be loosened so the hook
shaft turns freely. The shaft should then
be turned with the fingers and the hook
located properly, maintaining the needle
bar in its lowest position. Retighten
coupling screws securely.
-k-
Fig. 2
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T)ie hook should also be set later
ally so there Is approximately .003
inch to .005 inch clearance between the
spot in the needle and the point of the
hook (Fig. 3). This is done by loosen
ing set screw (A, Fig. 1) and moving the
hook to the left or to the right as may
be required and retightening the screw.
NEEDLE BAR HEIGHT
With the needle bar moving upward-
ly, the point of the hook should be
even with the back of
the needle (Fig. 4) when
the bottom of the point
is 1/64 inch above the
eye of the needle. Sy
loosening clamp screw
(E, Fig. 14) the needle
bar can be set to the Fig. 3
correct height. As a
final check see that the
needle in its lowest position, does not
strike the sides of the hole in the hook.
FEED DOGS
The front feed dog (A, Fig. 5) should
be set so that at its highest point of
travel, it projects the full depth of the
teeth above the throat plate. Height adjust
ing screw (c) for the front feed dog is set
Fig* 4 in the feed bar so that the screw driver slot
is toward the bottom of the machine which
makes for easier adjustment when machine is in operating
position.
a
Fig. 5
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.003
005
CLEARANCE
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The rear feed dog (B) should be set slightly lower
than the front feed so that only 3/A of the depth of a tooth
extends above the throat plate when the feed dog is at its
highest point of travel. This is done to prevent the possi
bility of the rear feed dog back feeding.
LOWER TAPE CUTTER KNIFE
Lower tape cutter knife (D^ Fig. 5) should be set in
the holder so that the knife edge (E) is located flush with
the top of the throat plate. Adjusting screw (F) is used to
raise the knife to its proper height and maintain this
height when in operation.
UPPER TAPE CUTTER KNIFE
The upper tape cutter knife (B, Fig. 6) must be set
after the tape cutter knife bar (A) has been correctly
located. The knife should then be positioned so that the
highest point of its cutting edge passes the cutting edge of
the lower knife by 1/32 inch when the knife bar is in its
lowest position.
For efficient operation, the cutting edges of the
upper and lower knives must have a slight shearing angle
so that there will be a cutting action the whole l^gth of
the blades. This angle is set in the upper knife mechanism
at the factory.
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The two cutting edges must exert a pressure against one
another. The amount of press\ire should be such that it can
be felt in the upper tape cutter knife bar when the knife
bar is pressed down with the finger. The pressure is ob
tained by adjusting the screw (C^ Fig. 6) in the upper tape
cutter knife bar. Turning screw to the right adds pressure
against lower knife, turning screw to the left acts the
reverse.
AUTOMATIC TAPE CUTTING MECHANISM
The automatic tape cutting mechanism has four main
adjustments. Adjustment No. 1 (Fig. 7) regulates the stop
position of actuating lever (A). This stop is properly set
when there is a small eunount of play, from 1/32 to 1/16
inch, between points (B) and (C) when the mechanism is at
rest.
Adjustment No. 2 is for the spring that maintains a
downward tension on the actuating shoe (D). The tension on
this spring is corrected loosening the two set screws (F)
and turning stud (G) clockwise to increase tension and
counterclockwise to reduce tension. The tension on this
spring should be only sufficient to operate the mechanism
promptly as shoe (D) rides off the bag. Too great a tension
Fig. 7
on this spring will cause the shoe to force the bag down
into the throat plate slot (E) causing the front end of the
bag to have uneven tape ends. Tighten screws (F) securely
when the tension has been properly culjusted.
Adjustment No. 3 limits the distance shoe (D) drops
into the throat plate slot (E) and controls the position of
cutting as shoe (D) rides on to the bag. This depth of
adjustment is proper when shoe (D), in its upward travel, is
about 1/32 inch below the top surface of throat plate as the
points (B) and (C) pass.
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Adjustment No. 4 locates the position of shoe (D) on the
end of the actuating lever extension (H) and controls the
length of tape on the ends of the bag. The overall length
of the tape is a fixed amount and is only divided on each end
of the bag by the location of shoe (D). This automatic tape
cutting mechiuiism, although it appears complicated and to
have numerous adjustments^ is relatively simple in that all
adjustments are fixed and there is no reason to deviate from
instructions. Properly adjusted, it will give a positive
single clip at each end of the sewn bag and will not double
chop.
Several details of the tape cutting mechanism were not
discussed in the instructions for the four main adjustments
because they do not actually enter into the adjusting of the
unit. It is, however, necessary that the mechanic have some
knowledge of these because they are important to the func
tioning of the unit in the event it should be necessary to
replace any parts.
The actuating lever dog (A, Fig. 8) is held on to the
actuating lever (B) by a hinge screw (C). The amount of
hinge of (A) on (b) is limited by two stop pins (D). The
position of the dog (A) is controlled by the stationary
spring and stationary pin (F). The function of this
Fig. 8
spring is to allow the point of (A) to lag as it contacts
the point of the trip dog (G) until the actuating dog (A)
reaches the limit of hinge controlled by pins (D). Spring
(£) then accelerates the point of (A) in the direction the
lever is moving to msike the points of (A) and trip dog (G)
pass each other by a considerable simount and prevent the
possibility of a double chop.
After the upper tape cutter knife (B, Fig. 6) has been
temporarily assembled in the upper tape cutter bar (A), set
the bar height by manipulating adjusting screw (C, Fig. 9)
so that .015 to .020 inch dist2ince remains between the point
of driving pawl (A, Fig. 9) and the point of ratchet lever (B)
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when the ratchet lever is in Its lowest operating position.
Maintain this adjustment by locking the nut (D) on adjusting
screw (C).
A^ C
Fig. 9
sTO ADJUST HEIGHT OF THE DRIVING PAWL ABOVE RATCHET LEVER
With set screw (A, Fig. 10) released from position,
adjust the point of pawl (B) above the point of ratchet
Q
Fig. 10
lever (C) to 1/32 inch by loosening screw (D) and moving
adjusting block (E) in or out whichever is required. This
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adjustment Is made when the pawl lever extension (F) is rest
ing against dog (G). Retighten screw (D) securely. Maintain
this position by setting and locking screw (A) to this
height, but do not exert a tension on spring (H) with screw
(a) .
The trip of this mechanism is accurately set when the
point of the pawl lever extension (A, Fig. 11) passes over
the top of the point of dog (B) momentarily before the point
Fig. 11
/
of the actuating lever trip dog (C) passes the point of dog
(D)
at position (E) when the actuating lever is moved either
up or down causing the points at (E) to pass. This adjust
ment is made by loosening clamp screw (G) and moving the dog
(B) up or down whichever is required. NOTE; On machines
having the dogs (B and D) in one integral unit without any
clamp screw (G), this adjustment is made by loosening the
screw (F) and moving the pawl lever extension (A) up or down
as required.
Fig. 12
From the library of: Superior Sewing Machine & Supply LLC