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Патент USA US3067714

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Dec. 11, 1962
M. PEDERSEN
3,067,704
THREAD SELECTOR MECHANISM FOR STITCHING MACHINE
Filed Sept. v6, 1960
3 Sheets-Sheet 1
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FIG.I
MATHIAS PEDERSEN
/
AU'ORNEY
Dec. 11, 1962
» M. PEDERSEN
3,067,704
THREAD SELECTOR MECHANISM FOR STITCHING MACHINE
3 Sheets-Sheet 2
Filed Sept. 6, 1960
INVENTOH.
MATHIAS PEDERSEN
BY
-WK
ATToRN EY
Dec. 11, 1962
M. PEDERsEN
3,067,704
THREAD SELECTOR MECHANISM FOR STITCHING MACHINE
Filed Sept. 6, 1960
3 Sheets-Sheet 3
66
62 ’/
6O
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28
46
v N
T
42
INVENTOR.
MATHIAS PEDERSEN
BY
WKW
ATTORNEY.
United
ates
tent O ”
"ice
3,067,704
Patented Dec. 11, 1962
l.
The invention is further characterized by the provision
3,067,704
of a novel thread supply mechanism for a stitching ma
Mathias Pedersen, Valley Stream, N.Y., assignor to Ameri
of spools of thread, the free ends of the thread on each
spool being guided by similar means to a position adjacent
chine having a plurality of supports for holding a plurality
THREAD SELECTGR MECHANISM FGR
STITCHING MACHINE
can Machine 8; Foundry Company, a corporation of
a needle so that a particular thread may be selected and
New Jersey
Filed Sept. 6, 1060, Ser. No. 53,945
12 Claims. (Cl. 112-254)
threaded through the eye of a needle in accordance with
the requirements of the goods to be stitched.
'
It is an object of the invention to provide a novel
This invention relates to sewing machines and more 10 thread supply mechanism having support means for a
plurality of sources of supply for different colored threads
particularly to improved thread feeding, tensioning and
and thread guiding and holding means for positioning
threading mechanism for use with such machine.
the
free ends of the threads of each of the several spools
This invention relates additionally to novel thread se
in position adjacent to a needle for rapid threading of
lector and tension control mechanism so constructed that
a plurality of sources of supply of thread are made avail
a needle.
The invention accordingly consists in the features of
construction, combinations of elements, and arrangements
able to the operator, and wherein at all times during
stitching operations the thread is properly supported and
of parts which will be exempli?ed in the construction
hereinafter described, and of which the scope of appli
supply the particular thread required for stitching a par— 20 cation will be indicated in the appended claims in the
accompanying drawings, in which is shown a preferred
ticular job and draw down from the supply a necessary
embodiment of this invention.
quantity of thread to eifect the desired stitching operation.
FIG. 1 is a plan view of a thread supply and threading
The present invention contemplates the provision of a
mechanism
constructed in accordance with the invention;
support having means for supporting a plurality of spools
of thread from which can be pulled or drawn a selected 25 _ FIG. 2 is a front elevation view of a mechanism dis
closed in FIG. 1, and
thread in accordance with the wishes of the operator
FIG. 3 is a side elevation shown in FIG. 1.
of the sewing machine provided with the novel mecha
‘ Referring to the drawings, the thread supply and
nism. It will be seen that a device constructed in accord
threading mechanism disclosed, is adapted primarily to
ance with the invention makes it possible to more rapidly
ful?ll the requirements of one or more stitching opera 30 be used for a button stitching machine in the type of co
pending Johnson et al. applications S.N. 20,142 ?led
tions by virtue of the fact that at all itmes there is ready
April 7, 1960, and SN. 20,693 ?led April 7, 1960, and
at hand several different threads of various colors so that
also button stitching machines such as disclosed in Pat
a large number of stitching operations can be taken care
terson et al., 2,739,550. However, it is contemplated that
of without the need of the operator leaving the machine
this mechanism can also be used with other types of
and searching for a thread of a particular color.
stitching machines to which it can be adapted.
A preferred embodiment of the invention includes a
Mounted on frame F of the machine is a bracket 12,
plurality of thread selector and tension control arms pivot
which
in the form of the invention illustrated is pro
ally mounted in a common support. Each of the arms
vided with 4 spindles 14, 16, 18 and 20, each of which
is associated with a source of supply of thread, such as
a spool of thread, the leading end of which is fed to its 40 loosely rotatab-ly supports a spool of thread 10. While
therthread on spools 10 as shown in the drawings is in
respective arm which in turn is adapted to be positioned
dicated to be of the same general type and thickness,
adjacent the needle of the machine so that a threading
nevertheless, each spool of thread may be different not
device co-acting with the needle can pick up the loose
only in color but also in type of thread, for example,
end of the thread and pull it through the eye of the
one
spool 10 may be cotton thread, another linen, anoth
needle.
45 er nylon, and also the thread can vary in thickness, type
An object of the invention is to provide a novel thread
of twist and strength, so that a wide variety of threads
supply and thread tension control mechanism for a sew
can be fed from the spools 10 to needle N in accord
ing machine.
ance with the demands required imposed upon the sew
The invention further consists in the provision of a
novel thread supplying mechanism for a sewing machine, 50 ing machine. In the case of sewing buttons upon work
‘as for example, men’s coats, women’s suits and the like,
wherein each of the plurality of sources of supply of
it will be seen that quite a variety of types of thread may
thread is provided with a thread guiding and supporting
be required in the course of operating the machine over
means for insuring the proper disposition of the loose
a period of time wherein a variety of garments have
end of a selected thread adjacent the eye of a needle and
‘buttons attached thereto.
a threading device which can be moved through the eye
tensioned.
Furthermore, in accordance with the inven
tion the operator can select fromthe several sources of
of a needle to engage the loose end of. said thread and .
pull it through the eye thereby threading the needle.
The invention is further characterized by the provision
55
The loose end of thread of each spool is guided through
a bore or hole 22 in a support bracket 24 secured to'the
frame of the machine. After passing through bores 22
"the free ends of the threads from the several spools 10
whereby damage to the thread and possible breakage 60 are guided through bores 26 in a guide member 28 also
secured to frame 10, and thence through holes 30 and
thereof is substantially completely eliminated during all .
32 in selector arms 34, 36, 38 and 40 loosely pivotally
of the stitching operations of the machine with which this
mounted on pin 42 supported in the side walls 44 of a
mechanism is associated.
,
comb construction formed in the lower portion of guide
v The invention is further characterized by the provision
_of a novel source of supply of thread capable of holding 65 28 and supporting bracket 29, the latter being attached
'of novel thread feeding and tension control mechanism
a plurality of spools of thread from which spools the free . _, to frame F, as shown in FIG. 2.
end of the thread is guided to movable support means
which are operative to dispose of thread properly with
respect to a threading device .and also to control the
Selector arms or ?n
gers 34, 36, 38 and 40, are spaced, as shown in FIG. 1
so that thread from the respective spools which they
serve can be supported and guided freely without ob
struction. However, the free ends of the selector ?ngers
the machine and also maintain the thread clear of the 70
»_ . ‘adjacent needle N_ converge in order that‘the loose end
of the thread carried thereby may be disposed as near
path of travel of the needle during such operations.
‘tension in the thread during the stitching operation of
3,067,704
3
4
as possible to the needle and yet be held clear thereof
position. The speci?c construction and operation of the
and out of the path of travel of the needle as it moves
needle bars and their operating mechanism forms no part
of the present invention and is therefore omitted in the
back and forth through the holes of the button and the
work or as it moves back and forth on opposite sides
interest of brevity. After needle bar 80 has positioned
of the thread loops attaching the button to the work
during the posting operations, as described in the Pat
needle N in the location shown in FIG. 3, the operator
engages lever 66 and swings it downwardly in the direc
terson et al. patent and the Johnson et a1. applications
tion of arrow A shown in FIG. 3, so that hook 60 is
referred to above.
passed through the eye of the needle and into engagement
49 is provided with a weighted arm portion 46 normally
with thread T. The same threading operation is used in
threading any of the threads T selected from a particular
spool. Upon withdrawal of hook T from engagement
with the thread passing through the eye of a needle and
the further pulling out of the additional thread required
for the complete stitching operation, the machine is now
operative to bias its other arm portion 48 into a raised
ready for operation.
position, such as that occupied by the three other ?ngers
From a consideration of the structure shown in the
drawings and referred to hereinabove, it will be appre‘
Each of the ?ngers or selector arms 3440 is of the
same general construction and hence it is considered
that it is necessary. only to describe one in detail.
As
seenin FIG. 2, it will be appreciated that each ?nger is
generally V-shaped in appearance. For example, ?nger
34, 36 and 38 in FIGURE 2. Each arm portion 48 is
formed with thread guiding holes 30 and 32 and a thread
T. supported thereby passes through hole 30, runs along
ciated that an important function of the thread selector
arms or ?ngers 34—40 is to control the tension in the
thread at all times, and’ also to insure that the ?xed end
the side of the arm as shown in broken lines in FIG. 2
and then emerges on the opposite side where it is dis
of the thread, that portion of the thread extending between
posed in position for threading through the eye of needle
hole 32 of a selector ?ngers or ‘arm and the eye of the
needle is maintained out of the path of travel of the
N.
When it is desired‘ to supply a particular thread from
needle so that it cannot be spitted thereby or broken
a selected source of supply, as for example, the thread 25 during» the passage back and forth through the button and
supported in arm 48 of ?nger 40, the operator grips the
free unweighted arm portion 48 of ?nger 40 and pulls
it downwardly. In so doing the end of arm portion 48
the work.’
As shown in broken lines in FIG. 2, the lowermost limit
of movement of the thread supporting end 48 of a tension
?nger, such as ?nger 40, is limited by the engagement of
moves past nose 54 on locking lever 56 pivotally mounted
on pin 58 supported in frame F of the machine. -In the 30 the upper surface 51v with bracket 29. In the operation
position shown in ‘FIG. 2, arm 48 is restrained by nose
54 of lever 56 against returning to its inoperative posi~
tion so that the free end. of the thread can be grasped
by the thumb and fore?nger of the operator, pulled out
the desired distance and then held in the path of travel
of threading hook 60 for threading the need-1e. Lever
56 is provided with a weighted portion 57 which tends
to bias nose 54 into its operative position, as shown in
FIG. 2, where it retains arm portion 48 of a selected
thread selector ?nger in thread serving position until the
operator desires to select another thread from one of
the other spools of thread 10. When a different thread
selector ?nger is selected by the operator, weighted por
of the'machine due to the gravity bias of the weighted
arm portion, i.e., portion 46 of selector arm or ?nger
portion 48 will be ‘moved’ upwardly whenever the pull on
the ?xed end of the thread is released and downwardly
in accordance with the downward movement of needle
N as it passes through the work.
The mechanism made in accordance with the invention
as noted hereinabove is better adapted for use in a button
stitching machine of the type disclosed in the above men
tioned Johnson et al. applications and Patterson et al.
patent. There are three basic operations in the attach
ment of a button to the work in a machine of the type
referred to. The ?rst is the formation of a tack stitch
or a simple stitch passing through the work. The second
tion 57 of lever 56 is moved upwardly, or in a counter
clockwise direction, as viewed in FIG. 2. This move 45 is the formation of a plurality of button attaching stitches
in the form of loops of thread connecting the button to
ment results in a downward swinging movement of the
the work. In the type of machine disclosed in the applica
arm portion 48 of the thread selector ?nger formerly
tions and patent referred to a button is turned from a
engaged thereby, whereupon when nose 54 moves clear of
vertical plane into a horizontal plane spaced above the
the arm portion 48 referred to weighted portion 46 will
return the particular thread selector arm to its inop 50 work. Finally, after the button has been attached to the
work it is again returned to a position in which it lies in
erative position, or that occupied by thread selector ?n
a plane at substantially right angles to the plane of sup
gers 34, 36 and 38, as shown in FIG. 2.
porting member holding the work and when so positioned
Threading hook 60 is mounted in a bore 62 in the
a plurality, of posting and thread locking ‘stitches are
threaded end of a rod 64 swingably supported in a lever
66 loosely swingably mounted on shaft 68 suitably sup 55 formed which complete the button attaching operations,
and the thread iscut by the operator preparatory to the
ported in a bracket 7 0 attached to frame F of the machine.
next button stitching operation taking place.
A clamp screw 61 on the threaded end of rod 64 is turned
Referring 0 FIG. 2, it will be noted that the operator
home against the end of hook ‘60 in bore 62 and thereby
has just threaded needle N and the machine is ready to
holds it ?rmly in operative position.
A spring 72 encircling shaft 68 having one end attached 60 make the ?rst stitch. When needle bar 80 moves needle
N downwardly through the work the ‘free end 48 of
to lever 68 and its other end secured to collar 72 ?xed
?nger
40 moves downwardly and comes to rest at a pre
to shaft 68 is tensioned as the result of the movement of
determined distance spaced above the work in accordance
hook 60 through the eye of needle N and swings lever
66 back to the position shown in FIG. 3 in full lines to 65 with the engagement of upper surface 51 of weighted end
portion 46. of .arm 40 with bracket 29. As the needle
cause hookvétl to pull the thread through the eye of the
moves through the work because of the novel manner in
needle N. It is apparent that spring 72 also maintains
which thread T is fed from a spool 10, slack thread is
threading hook 6t} in its inoperative position, or that
pulled from this spool, thereby compensating for the ad
shown in FIG. 3. Plate 76 attached to bracket 70 limits
ditional thread required as the needle passes through the
the upward movement of lever v66 under the in?uence of 70 work and the loose end is pulled therethrough in known
spring 72.
'
manner by ‘a suitable thread puller (not shown). Thus
In threading needle N, needle bar 80, which is the up
the thread tensioning and control ?ngers disclosed herein
per needle bar in the type of a machine disclosed in the
insure against breakage of the thread or any damage there
above referred to Johnson et a1. applications and Pat
to since they make it possible to supply automatically any
terson et al. patent is moved downwardly into threading 75 and all additional thread which comprises the “?xed end”
3,087,704
5
6
V
for limiting the extent of downward movement of said
above referred to. At the same time the portion of the
thread extending between hole 32 in arm portion 48 and
thread holding end of said lever, and other means for
limiting the extent of upward movement of said end of
said lever during each stitching movement of said needle.
the work is maintained and properly tensioned by weight
ed end portion 46 of ?nger 40 and clear of the path of
4. A thread handling mechanism for use with a sew
travel of the needle. As a result of the turning of the
button from vertical position to the horizontal position
shown in FIG. 2, additional thread is pulled from spool
ing machine comprising a thread supporting and tension
ing ?nger, means movably mounting said ?nger with a
and positioned clear of the path'of travel of the needle
whereby when said needle is moved downwardly through
work to be stitched said portion also is moved down
wardly in response to the pull of the thread supported
thread holding portion thereof disposed closely adjacent
10 and as a result the nose portion 48 of ?nger 40 will
the path of travel of the needle and with the thread ex
remain in substantially the same position as shown in
broken lines in FIG. 2 with the thread properly tensioned 10 tending from said portion through the eye of said needle,
in this same manner as described.
7
It is important to note that during each pass of the
needle through selected holes in the button and the work
or in the work alone in accordance with the Patterned
stitching operation of the machine which is not shown
thereby, and means for biasing said portion in the oppo
site direction for tensioning the thread extending between
said portion and said eye of said needle when said needle
is moved upwardly out of said work.
5. The invention de?ned in claim 4 including means
limiting the extent of downward and upward movement
or described in detail herein because it does not form
a speci?c part of the invention, ?nger nose portion 48 of
?nger 40 will move up and down as described above and
the proper tension will be maintained on the thread at all 20 of said thread supporting portion of said ?nger.
6. The invention de?ned in claim 4 wherein said bias
ing means includes a weighted section of said ?nger re
times.
In the ?nal stage of operations of a button stitching
machine of the type referred to provided with the thread
mote ‘from said thread holding portion, and means in
said holding portion frictionally holding thread against
selecting, feeding and tension controlling mechanism of
unwanted movement.
the invention, the tension on the thread at all times will
be maintained properly in this same manner as just de
scribed, at the conclusion of the entire stitching sequence,
the operator will merely cut the thread adjacent the post
connecting the button to the work whereupon weighted
end 46 will swing nose portion 48 upwardly into engage 30
ment with nose 46 of lever 56 so that the ‘free end of
the thread is disposed closely adjacent the needle ready
for threading.
The invention provides a simple and ef?cient mecha
nism for supplying to a sewing machine a selected thread
from a plurality of sources of supply of di?erent colors
and/ or types of thread. It also makes available mech
anism in which the selected thread supplying device not
only properly disposes the free end of the selected thread
adjacent the needle to be threaded, but also is operative
during the entire stitching operation in maintaining the
selected thread properly tensioned out of the path of
travel of the needle and at the same time the invention
makes it possible to provide additional slack thread,
thereby preventing breakage or damage to the thread.
What I claim is:
1. A thread supplying and threading mechanism for a
7. A thread handling mechanism for a sewing machine
comprising a source of supply of thread, guide means
for supporting and guiding the vfree end of the length of
thread, including a movable arm operative to dispose said
free end of said thread adjacent a needle to be threaded,
said movable arm including a thread guiding and tension
ing member having a weighted portion, and a thread
guiding portion remote from said weighted portion, piv
otal support means mounting said movable arm for
movement into and out of operative position disposing
said free end of said thread adjacent said needle, and
means engaging said thread guiding portion of said arm
to maintain it in said operative position.
8. The invention de?ned in claim 7, wherein said last
named means comprises a locking lever, said lever hav
ing a nose engaging said thread guiding portion of said
arm, and means for maintaining said nose positioned to
present movement of said thread guiding portion of said
arm out of operative position proximate said needle.
9. Thread handling and tension controlling mechanism
45 for a sewing machine having means for passing a
threaded needle ‘back and forth through work to be
stitched comprising a plurality of individual sources of
supply of thread, a selector arm for each of said
sources of supply of thread, including means for dis
means for the free end of the thread drawn from
50 posing a selected thread adjacent the needle of a sew
each of said spools, selector arms for positioning a se
ing machine for threading, means pivotally mounting said
lected thread closely adjacent a needle to be threaded,
selector arms whereby a selected arm can be moved into
and means pivotally mounting each of said selector arms
operative position, and means common to all of said
for oscillatory movement concurrently with the movement
selector arms for maintaining said selected arm in said
of said needle to support and tension the thread between 55 operative position.
the free end of said arm and said needle.
10. Thread supporting and feeding mechanism for a
2. A thread handling and tension controlling mech
sewing machine having means for reciprocating a needle
anism for a sewing machine having means for passing a
to pass it back and forth through work to be stitched
threaded needle back and forth through work to be
comprising a plurality of supports, each being operative
stitched comprising a source of supply of thread, a pivot
to hold an individual supply of thread, guide means for
ally mounted lever having a weighted end, and a thread
each thread drawn from each supply, a thread supporting
holding and supporting end remote therefrom for posi
‘and feeding arm for each free end of thread supported
tioning the free end of a length of thread adjacent said
in said guide means, each of said arms having means for
sewing machine, comprising a plurality of support ele
ments, each operative to support a spool of thread, guide
needle for threading, thread guides in said last-named
disposing the free end of the thread carried thereby ad
ends providing means frictionally securing said thread 65 jacent said needle, and means pivotally mounting each of
against removal from said guides, said weighted end be
said arms with said thread disposing means thereof lo
ing operative in response to the movement of said
cated closely, laterally adjacent each other whereby the
distance of each or" said means to said needle is substan
threaded needle into said work and the concurrent down
tially the same.
ward movement of said thread holding end of said lever
11. The invention de?ned in claim 10 including means
supporting the thread between said end and said needle 70
for incapacitating the operation of all but one of said
to tension the thread between said needle and said thread
arms at any one time, whereby a selected thread can
holding end of said lever and regulate the feed of slack
be threaded through said needle and wherein said selected
thread through said guides in accordance with the de
arm can oscillate concurrently with the movement of
mand for thread imposed during each stitching cycle.
3. The invention de?ned in claim 2 including means 75 ‘said needle and the thread carried thereby will be sup
3,067,704
7
ported and tensioned between said disposing means and
said needle.
12. The invention de?ned in claim 10 including means
for normally biasing said disposing means away from
Work to ‘be stitched, and wherein said pivotally mounting Ca
means of said arms position the portions of said arms
remote from said disposing means in diverging spaced re
lationship to accommodate slack thread movement rear~
wardly through said guide means in response to the move
8
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,295,330
Knight ______________ 1- Feb. 25, 1919
1,803,918
1,822,765
2,189,732
2,625,345
Rozdilski _____________ __ May 5, 1931
Howell _______________ __ Feb. 6, 1940
De Palma ____________ __ Jan. 13, 1953
614,059
Germany ____________ __ May 31, 1935
FOREIGN PATENTS
ment of a selected arm and its disposing means away
,from said work.
Dickey _______________ __ Sept. 8, 1931
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