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Патент USA US2410270

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ocr. 29, .1946.
2,410,270
R. L. DASHEW
THREAD MARKER MECHANISM
Filed April 13, -‘1944
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R. L. DAsHEw
THREAD MARKER MECHANISM
Filed April 15, 1944
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THREAD MARKER MEQHÀNISM
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R. L. DASHEW
Oct. 29,
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R. L_ DASHÈW
THREAD MARKER MECHANISM
Filed April 13, 1944
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Patented ocr. 29, 194e
v2,410,270
UNITED STATES PATENT'OFFICE
THREAD 'MARKER MECHANISM
Robert L. Dashew, Baltimore, Md.; Ruth '-L.’
Dashew administratrix of said Robert L.
Dashew, deceased
Application April 13, 1944, Serial No. 530,888
17 Claims.
l
,
This invention relates to thread-marking ma
chines.
(Cl. 112-2)
.
`
‘
In the production of clothing, for instance,
men’s and ladies’ suits, by the larger tailoring es
2
tion of the thread carrying needle for forming a
knot in the thread at a point below the surface
on which the plies are supported.
f
A still further object of the invention is to pro
vide athr-ead marking machine wherein an oper
tablishments a plurality of plies of fabric are cut
ating lever is depressed and raised during the ad
in one operation and, for instance, in the case of
vance and retraction of the thread carrying nee
men’s coats, it is the practice to -mark the several
dle and the upward motion of this operating le
plies while still .stacked one upon another with
a length of thread extending through them, say
ver is utilized for actuating the knot tying devices
at each point where a button is to be attached, or 10 to form the knot in the thread.
Still another object of the invention is to form
at the corners of the pockets, and other points at
theknot in the thread after the needle has been
which work is to be performed on the several
pieces after they have been separated. In sepa
withdrawn to a point at least above the fabric
supporting surface in order to eliminate the pos
rating the several plies the thread is cut between
sibility of the needle being damaged or broken
each two thicknesses of fabric so that each piece
of fabric carries a short length of thread at each
and, to this end, the knot forming devices are
normally positioned entirely out of the path of
of the points mentioned. Heretofore this mark
ing thread has been placed through the several
the needle loutv are moved by the downward move
ment of the operating lever into thread engaging
thicknesses of fabric by what is herein termed
the thread marking machine and in the use of 20 position so as to engage the thread while the nee
this machine one difficulty that has been encoun
dle is at its lower limit of movement and then
tered is' the tendency of the thread to pull
form the knot in> the thread while the needle is
through the plies of fabric as they are removed
being retracted, so that the needle is removed
entirely from the knot tying devices while the
from the machine or while they are being sepa
rated from one another.
For this reason it has 25 latter are in motion in the making of the knot.
been the practice fork the operator to slip his
hand under the stack of fabric and grasp the
marking thread underneath the lowermost ply
In the present machine the knot is actually
formed in the thread by a knotter device posi
tioned to one side of the path of the thread car
and tie a kno-t in the thread at that point to pre
rying needle and, when the needle with the thread
vent its being pulled through the fabric.> This 30 is- at its lowermost limit of movement, the thread
is engaged-by what is termed a looper which re
manual tying of the knot in the marking thread
tains the thread, in the form of a loop, beneath
underneath the plies of fabric while the latter are
the fabric when the needle is withdrawn and this
looper together with what is termed a loop shifter
formance which greatly increases the time factor 35 are then actuated to shift-the looped portion of
involved in marking each stack of plied fabric but _ the thread laterally of the needle to a point where
it also presents a possibility of error and the pri
it will be engaged by the knotter and a further
obj ect of the invention is to provide an actuating
mary object of the present invention isto provide
a thread marking machine in which a loop in the
mechanism for the knotter, the looper and the
marking thread will be automatically knotted at 40 loop shifter, wherein all three of said elements are
a point beneath the lowermost thickness of
operable through'a single rack barwhich, in turn,
is adapted to be reciprocated by the rocking mo
fabric after the thread has been fed through the
yseveral plies by a depressible' needle normally po
tion of the operating lever in advancing and re
still in the marking machine or while still stacked
upon one another is not only a rather tedious per
tracting theA needle.
.
'
,
sitioned above the plied fabric and the two ends
In forming the knot in thev looped thread the
of the looped thread will be left free above the 45
fabric whereby the several plies may be readily
looped portion of the thread is engaged at one
separated when desired.
,
~
point between a pair of jaws constituting part of
In the present machine the plies of fabric are
the knetter and a further object of the present
placed on the surface of a supporting base and a
invention is to provide a comparatively simple
thread carrying needle normally positioned in a .50 mechanism‘for freeing or removing the knotted
bracket above the fabric is depressed to advance
thread from between these knotter jaws. Prefer
ably, thesey thread freeing means are also ren
the needle through the several yplies of fabric to
a point below the surface on which the fabric is
dered operative by the rack bar which actuates
supported and a further> object of the invention
the knotter, the looper and the loop shifter.
is to yprovide means operable during the retrac 55 With these and other objects in view, vthe in
2,410,270
3
vention consists in certain details of construction
and combinations of parts, all as will hereinafter
be more fully described and the novel features
thereof particularly pointed out in the appended
claims.
`
In the accompanying drawings illustrating the
'
"
aside >elevational View of the pres- l
h
ent machine with the base and a portion of the
operating lever shown in section;
.
Fig. 2 is a detail sectional View on the line 2~-`
ofFig.1;
.,
f
"
Fig. 3 is a vertical sectional viewlonigtudinally
of the needle support;
f
i
'
slot 32 in the tube 29. The needle 25 is mounted
on a rod-like needle arm 33 which, at its upper
end, is removably secured in a cap 34 threaded
in the upper end of the plunger 23. The presser
foot 2S is carried on the lower 1end cfa tubular
preferredeinbodiment of the invention-v_.
Figure'
4
30, being guided in this sliding movement by a
pin 3l carried by said plunger engaging in the
`
l
tube 29. At the upper end of this tube 35 carry
ing the presser foot there is a collar 35 which has
attached thereto a lug 37 which also travels in
" the'.slotf32 for the purpose of guiding the move
ment of the presser foot. Interposed between this
' .collar 35> and the lower end of tube 29 is a coil
"
Fig. 4 is an enlarged top'plan view’of the base
with the upper wall of the latter broken away il
lustrating the thread looper and loop shifter in
the positions they occupy at .the moment y.the
needle is fully depressedor advanced;
member 35'slidably received in the lower end of
'
spring 38 and interposed between said collar 36
and the plug or cap 34 is another coil spring 39,
so that, whenthe plunger 23 is depressed by
downward movement of .the operating lever,
spring 38 is compressed between collar 35 and
Fig. 5 is a vertical sectional view on the line 20 the bottom of tube 29 and spring 35 is compressed
5-'5 of Fig'.- 4.
`
y
»
l
`
Figl 6 is a horizontal sectional view on the line
between Ycap 30.' and collar 36 and, as a result,
when the operating lever 2li is released in its low
6_6 of Fig. 5;
ermost position these springs return to normal
ly past ,the knotter and the loop shifter being
23 to their raised positions.
partially advanced for shifting the loop toward
_ '.I'Q'v compensate for rthis vertical reciprocatory
motion of the plunger tube 23 the operating lever
position and retracty the needle from the goods
Fig. '7 is a View similar to Fig. 4 showing the
loop in the thread as having been drawn partial 2.5 and return the presser foot and the plunger tube
the knotter;
Figp8 is a view similar to Fig. 7 showing the
looper and the loop shifter in what will be termed
their normal postions and holding the thread
in position for the knot toY be formed therein by
the knetter;
` Fig. 9 is a topplan View of the base, on a smaller
scale, with the top wall of the base broken away, ‘
illustrating what are termed the normal positions
of the looper, the loop shifter, the knotter, the
_thread releasing plate, and of the rack bar for
actuating those instrumentalities.
Fig. v10 is a detail sectional view on the line
I_û-läl of Fig. 8;
~
,
v
is pivotally attached to the tube, as at 4U, and
the lever itself is formed of telescoping sections
4I, 42. the latter being mounted on pivot pin ¿i3
journaled in extension ¿ill of` bracket arm 22.Y As
illustrated in Figs. 1 and 2, a gear segment ¿i5
is also mounted on pivot pin 43 with the teeth
46 of said segment in engagement with a gear ¿il
mounted on a> stub shaft 48 journaled in the
bracket arm. This shaft ¿i8 carries a second gear
49 which meshes lwith the teeth 55 of a rack bar
5| slidably secured onthe side ofthe bracket arm
by bolts 52 which extend through slots 53 in
said rackbar and are threaded into sockets in the
- Fig. l1 is a detail top plan view of the knotter
bracket arm. The rack bar 5! has a downwardly
and looper illustrating an intermediate position
of the knotter in the formation of the knot;
offset depending end .filal which protrudes through
_
Fig. 12 is a detail sectional View .taken in the
plane indicated by the line I2-l2 of Fig. 11;
` Fig. 13 is _a top plan view of a portion of the
machine base illustrating the knotter in the po
sitionvoccupied by the latter when the forma
tion of the knot has been completed and the
thread is about to be freed from the jaws of the
knetter;
Fig.r14 is a similar view illustrating the knot
being freed from the jaws of the knotter;
Fig. 15 is a vertical sectional View on the line
l5-I5 of Fig. 4; and
Fig. 16 is a horizontal sectional view on the
line Iii-i6 of Fig. 15.
y
In the embodiment of the invention illustrated
an opening 5a in the upper base wall and has
attached to its lower end a rack bar 55 (see also
Fig. 9. The teeth of this rack bar 55 engage
a gear 56 on a shaft 51 mounted in the lower base
wall and _fast with gear 56 is a larger gear 58
so that the two gears 56, 58 rotate in unison on
the shaft 5l. Rack bar 55 may be slidably se
cured in guides 59 mounted on the lower base wall
2l. Gear 58 meshes with the teeth of another
rack 6D also slidably held on lower base wall 2i
by guide brackets 5l. Thus, oscillation or rock
ing of the operating lever 24 imparts a recipro
catory motion 'to rack ,69 for operating the knot
forming mechanism which will now be described.
When'the ythread carrying needle 25 is fully
depressed the eye portion thereof is received in
in the present instance the machine comprises a
a tubular guide 62 mounted on the lower base
hollow base having a top wall or surface 25 on
and has slidably mounted in its upper extremity a
wall and having its upper end portion cut away,
as at B3, whereby the thread 2S `may be engaged
by> what will be termed the thread looper. This
thread looper preferably consists of a thread en
gaging hook 'member Gli pivotally carried on a
plunger 23 depressible by the operating lever 24
pin 65 in the outer end of an arm 65 whose op
to advance the needle 25 carrying the thread 25
downwardly and through the needle opening 21
posite end is formed` with an enlarged hub por
whichv engages and holdthe goods iirmly on the
gear 69 .on a shaft 10 and this gear 69 is adapted
lto be'wactuated by the teeth of a rack 1l fastened
_onth'e upper surface> of the rack 5G. For purposes
which the fabric to be marked is placed and a
bottom wall 2l, and mounted on th-e upper wall
20 is a bracket arm 22 which overhangs the base .,
tion journaled on a shaft â'l mounted in the base.
This enlarged hub portion of arm 56 is formed or
in theupper wall of the machine base. Plunger y
23 also has associated therewith a presser foot 2S "70 provided with av gear’ßß which meshes with a
basewhile `the goods' are penetrated by needle
25. As shown’ in Fig. 3, the plunger 23 is of tubu
lar formation and slides on a tube 25 rigidly y
which willlater appear’gearßä is of the mutilated
mounted in the bracket arm 22 by a set screw 75 type in that for a portion of its periphery `it is
2,410,270
5
,
provided with an extension Ii!)á which is formed
with a flat surface-adapted'to engage against the
straight edge portion 1Ia of rack 1I at certain
times in order to lock the looper arm-against mo
6
the» knotter is revolved in a counter-clockwise
direction to the position shown in Fig. 7, ready
to 'start »the knot forming operation. Gear 83 is
also ef the mutilated type, having a flat surface.
tion. Referring to Fig. 9, the looper {if} and its
35 adapted to engage straight. edge portions of
arm (i6 are shown in what is their normal posi
tion at which time rack Sil `with rack 'II are at
rack bar Si! at opposite ends of teeth 84 to hold
the »knotter stationary when occupying the posi-l
tions in which it is shown in Figs. 4 and 9.
the right-hand limit (as viewed in Fig. 9) of their
Assuming the operating lever has depressed the
movement and at which time the operating lever
will be‘in raised position. Fast on the hub por 10 needle to its lowermost limit of travel so that the
elements described are in the positions shown in
tion of arm 65 is what will be termed the loop
Fig. 4, and that the lever is then released, the cy
shifter 12, which is also shown in its normal
cle oi operation in forming the knot during the
position in Fig. 9. Thus, both the looperßlI-and
return movement of operating lever .23, is as fol-.
the loop shifter 12 are normally off to one side
lows: During the initial portion of the return
of the needle guide 62, or the path of the needle.
movement oi rack bar Bü, the rack teeth of rack
However, when the operating lever 24 is de
„ 1i, through gears 69, 68, move the looper hook 64
pressed, and the needle moved downwardly rack
and lloop shifter 12 to successive positions illus
55, gears 55, 58, and rack 60, together with rack 1I,
trated in Figs. 7 and 3. At this time, as shown in
will be moved in the directions indicated by the
Fig. 8, rack teeth 84 havev engaged gear 83 and
arrows in Fig. 9, and when the teeth of rack
started the reverse or clockwise rotation of the
'II actuate gears 69, 68, the loop shifter 12 and
knotter jaws 16, 11 and as the jaws continue to
the looper hook 64 will be moved to the positions
so revolve the looped portion of the thread is
shown in Fig. 4. It should be added that> when
wrapped around them (see Figs. l0 and 12) and
the parts assume their normal positions, as shown
in Fig. 9, a dog 13 pivotally mounted on a pin 25 the jaws are opened by cam roller B2 passing»
over the higher portion> of cam 8l so that the
'I4 engages looper hook 6d and rocks the latter
looped thread is received between said jaws be
on its pivot pin against the tension of a spring
fore the jaws reach the limit of their return
65a (for a purpose which will later be described)
movement to normal position. Immediately be
but when rack 1I is moved to the left, as viewed
in Fig. 4, dog 13 is swung on its pivot pin under the 30 fore they reach their normal position, the jaws
are closed by cam roller 82 engaging a lower por
influence of a spring 14@ with the result that the
, tion of its associated cam surface. The parts are
looper-hook 64 is free-to turn 'on its pivot pin on
then in the positions shown in Fig. 13, with a por
arm 66 while being moved to the position shown
in Fig. 4. This movement of the looper hook to
tion of the looped thread wrapped around the
the position shown in Fig. 4 is for the purpose of
permitting the thread engaging-hook to catch the
thread 2S in the initialfportion of the return
-movement of arm @ii-and looper hook 54 to their
jaws of the knotter and said thread also gripped
in said jaws under the tension of spring 19. At
this point, it will be observed that rack teeth 84
have become disengaged from gear 83 but that
the rack to, itself, has not yet fully returned to ,
normal positions. As the looper 64 approaches
the position shown in Fig. 4, it engages a stop 40 its normal position.l
It is during this ñnal portion of the return
15 which swings or “cocks” it against the pressure
of spring 65 so’that the instant arm 64 starts its
return movement, the looper hook will have a
slight independent motion of its own'to engage
and catch thread 2B.
`
`
When‘the operating lever is released and re
turns to its upper normal position, the looper
hook -engages andY retains the thread 26 and as
said hook returns to its normal position it forms
a loop in the thread and moves said loop into posi
tion to have a knot formed therein. The return
motion of the loop-shifter 12 also causes the
movement ofrack bar til that ejector plate IDU is
actuated to perform the last step in the formation
of the knot and to free the knotted thread from
45 the knotter. This is accomplished as follows:
Plate Iiiil has van extension lill on which is pivoted
at EQ2 a pawl Silit yieldingly held by a spring Hifi
against a stop pin l E35 on said extension and said
pawl normally engages in a detent' I ilëi in rack bar
5d so that the plate is normally held in what
might be termed its normal advance position as
shown in Fig. 9. However, during depression
of the operating lever, the rack bar 60 moves as
looped portion of the thread to beso positioned
indicated by the arrow in Fig. 9 and the ejector
with respect to an ejector plate |09, as to permit
theknotted thread to be removed from the knot 55 plate is retracted by a spring Iii'l attached to >the
base wall 2l and the plate extension IB I, the pawl
forming mechanism as will later be described.
|63 riding out of the detent |66. The retractive
The successive positions of the looped thread at
movement ofthefextension and plate is limited
these points in the cycle of opera-tion are illus
by a stop pin |08 so that the plate I0() assumes
trated in Figs. 7 and 8.
Y
The knotter, which is preferably of the type 60 the position shown in Figs. 4, '1 and 8.> With the
plate located in this retracted position, the thread
capable of tying a bow knot, consists essentially
is then moved into position with respect to an
of two relatively movable jaws 16, 11. lWhere
edge thereof, as previously mentioned, by the
a knotter of this type is employed one of said
return swinging motion of the thread shifter 12,
jaws 11 is pivoted at 18 on the other jaw 'Iâ and is
as shown in Figs. 8, 13 and_l4. Preferably, this
yieldingly held in closed position by a spring 'E9
and jaw 15 is mounted on a shaft 8B journaled in
the base wall 2l. Mounted on the base 2I is a
cam 8| which is engaged by a cam roller 62 car
edge portion, indicated at Idil is actually formed
by a slot IIE) in the plate, said slot being formed
with a right-angled extension I II in registry
with the needle guide B2 so that the needle, with
ried on the shank portion of jaw 11, the contour
of said cam being such that the jaw 11 «is rockedv 70 the thread, can pass through the plate when it“,
is depressed. Thus, during the ñnal portion of`
on its pivot as the jaws, with shaftSEl are rotated
the return movement of rack bar YGli, pawl |93 re
by a gear ssen Said shaft engaging the teeth sa
enters detent 196 which is held against pin l05
on the adjacent end V.of rack (iii. Normally, the
knotter occupies the position in which it is shown
in Fig. 9 but when the operating lever is depressed
under the influence of spring |04, and the exten.
sion IUI and plate I00 are returned to their origi
2,410,270
7
nal normal positions by reason of which, and the'
to its'normalY position andA withdraws the ends
fact that the looped thread is >engaged against
plate edge |09, the thread wrapped around the
jaws is pulled off the jaws. Thus, the portion
of said >loop above said surface, and means for
jaws. Finally, the` plate ißt pulls the thread
with a thread knotted at one side of the fabric
forming a knot in said looped portion of the
thread while the ends of the loop are located
held between the jaws is pulled> through the loop 5 above said surface.
2. In a machine for marking plies of fabric
that had previously been wrapped around the
from betwen the jaws, the strength of spring 19
and extending from the opposite side of the
being such as to permit this. At the same time,
fabric free of said knot, a thread carrying nee-~
the dog i3 is engaged by rack bar 1| and rocked l0 dle adapted to penetrate said plies from said
opposite side to the other, means for engaging
the thread at said other side of the fabric plies
and forming and retaining a loop in the thread
from the position shown in Fig. 7, which it as
sumed when said rack bar was retracted by de»
pression of the operating handle, to its normal
position shown in Figs. 9 and 14, with the result
at said other side when the needle and the ends
thatlooper Gil is rocked on its pivot to disengage
of said loop are withdrawn, and means for tying
the thread therefrom. Thus, the knotted thread
is completely freed (see. Fig. 14) and the parts
a knot in said looped portion of the thread while
the ends of the loop are located at said opposite
have assumed their normal positions, ready for ’
side of said plies.
the next cycle of operations.
Thus, a secure knot is formed in the thread be
'
3. In a machine for marking fabric with a
20 thread knotted at one side of the fabric and ex
at the next point to be marked. After the fabric
has been marked in this fashion at all the desired
points it can be removed without danger of any
tending from the opposite side. of the fabric free
of said knot, a thread carrying needle adapted to
penetrate said fabric from said opposite side t0
the other, a knotter mechanism for engaging and
tying a, knot in the thread at said other side of the
fabric while the needle with the thread is located
at said opposite side of the fabric, a normally un
loaded spring for actuating said knotter mecha
of the threads being accidentally displaced due to
nism and means for loading said spring for ren
neath the fabric positioned on surface 2B and
after the thread is severed between the upper face
of the fabric and the needle the fabric is shifted
on surface 2li and the same cycle of operation is
repeated to place the thread through the fabric
each one of them having a knot tied therein. 30 dering said knotter mechanism operative to en
Also, where a multiplicity of plies have been
marked with the thread the several plies can be
separated and each marker thread severed be
tween each two plies to leave a short section of
thread in each ply without danger of the main
portion of -each marker thread being pulled
gage said thread while the latter is positioned
at said other side of the fabric and to tie a knot
in said thread at said other side of the fabric
while the needle with the thread is located at
f said opposite side of the fabric.
4. In a machine for marking plied fabric
through. It will be noted that by forming a loop
in the thread and then tying a knot in the form
of a bow knot in the looped portion of the thread,
a rather bulky knot is provided to insure against 40
the thread accidentally pulling through the fab
ric. At the same time, the two ends of the thread
are left free to permit ready separation of the in
dividual plies for subsequent tailoring operations.
This is particularly advantageous in connection
with loosely woven fabrics. However, it is not
essential that the knotter be of the type for ty~
ing bow knots as smaller knots will suffice in the
with a thread knotted at one side of the fabric
and extending from the opposite side of the fabric `
free of said knot, a thread carrying needle, actu
ating means for advancing and withdrawing said
needle through and from the fabric to pass said
thread through the fabric, means operable by
said actuating means for engaging the thread
whilethe needle is in advanced position and
' forming a loop in said thread when the needle
with the thread is withdrawn, and means oper
able by said actuating means for tying a knot
in the looped portion of the thread at said one
side of the fabric while the withdrawn portion
it is preferred to have the knotting mechanism 50 of the thread is located at said opposite side of
operatively connected to the main actuating lever
the fabric.
so that the spring for actuating the knotter will
5. In a machine for marking plied fabric with
be loaded by depressing said lever, as this greatly
a thread, a thread carrying needle, a lever for
simplifies operation of the machine by reason of
advancing said needle and thread through the
the fact that the fabric is penetrated by the 55 fabric, yieldable means for retracting said nee
dle and returning said lever to its normal posi
needle and thread and the knot is tied in one
tion, means actuated by said lever during the
stroke, so to speak of the operating lever. How
return motion of the latter for engaging said
ever, in its broadest aspect, the invention con
thread and forming a loop therein when the nee
sists in providing a spring operated knotting
mechanism for forming a knot in the thread 60 dle is retracted, and means operable by the lever
after the latter has been passed through the
during the return motion of the latter for form
ing a knot in the looped portion of said thread.
fabric and, except as defined in the claims, the
6. In a machine for marking fabric with a
invention is not to be considered as limited to the
thread extending free at one side of the fabric
detail of loading the knotter actuating spring by
the movement of the main operating lever as 65 and knotted at the other side, a thread carrying
needle, actuating means for passing the needle
said spring may readily be loaded independently
and thread through the fabric from said one side
of the movement of said lever.
to said other side and retracting said needle, and
What I claim is:
means operable by said actuating means for re
l. In a thread marking machine, a cloth sup
porting surface, a thread carrying needle nor 70 taining a portion of the thread and forming a
knot therein at said other side of the fabric'with
mally lpositioned above said surface, means for
the thread extending freely at said one side of
depressing said needle to carry said thread to a
the fabric.
'
point below said surface, means below said sur
7. In a machine for> marking -fabric with a
face for engaging and retaining a loop of said
case of tight or close woven fabrics. . Also, while
thread below said surface as the needle returns 75 thread extending free at one >side of thefabric
2,410,279
10
between said looper and` loop shifter, a recip
rocatoryplate having a slotv therein in which
.and knotted at the vother side thereof», a thread
carrying needle, actuating means for passing the
needle and `thread through the fabric from said
said looped portion of the thread is received
when shifted laterally of the needle, and means
for reciprocating said plate with the thread in
said slot to free the thread from said knot form
Oneside to the other side and withdrawing the
needle with the thread, and mechanism respon
sive to the retractive movement of the needle for
forming a knot in the thread Aat said other side
of the fabric remote from the withdrawn thread
ing means.
ì
-
l2. In a machine for marking fabric with a
,
thread, a thread carrying needle, actuating
8.*In a machine for marking fabric with a
thread extending free at oneside of the fabric
and knotted at the other side thereof, a thread
means for passing the needle and thread through
fabric remote from the withdrawn thread ex
tending from said one side of the fabric,^and
means for rendering said mechanism’ operative
upon retraction of said needle.
9,;,In a .machine for marking fabric with a
-shifter‘past the path of theneedle as the latter
loop shifter are returned to their normal posi- 1
ay lever for actuating said support to advance `
extending from said one side of the fabric.
the -fabric from one side to the other, needle re
tracting means, _a looper normally positioned to
one side of thepath of the needle at said other
carrying needle, actuatingmeans for passing the
side of the fabric, a loop `shifter positioned to
needle and thread through the fabric from said
one side to the other and withdrawing said 15 one side of ¿the path -of the needle ¿at said other
side ofthe fabric, means operable by said needle
needle with» the thread, mechanism for forming
actuating means to -rnove said. looper and loop
a knot in the-thread at said other side of the
is advanced and for >returning said looper and
loop :shifter to their normall positions as the
needle is retracted `to engage and form va loop in
said thread and shift the looped portion of Vthe
thread laterally ,of the needle, means operable
thread, a thread carrying needle, mìeansl for
by the needle actuating means ¿for forming a
advancing- the needle and thread throughk the
fabric, resilient means for ïretracting the needle, 25 knot in the looped portion-ofthe thread, a re
ciprocatory plate having a slot therein in which
a’looper normally lpositioned to one side- of the
'said looped thread’is ,received when shifted later-`
path ofthe needle, `a loop shifter normally posi-`
ally of the needle, and means operableby the
tionedA at the same side of the path of the 'nee
needle actuatingïmeans for reciprocating said
dle, ymeans operabley by .the needle advancing
means forzmovin'g said looper and,l loop shifter 30 plate with the thread >in said slot to free the
knotted thread from said knot forming means.
past the path of the >needle whereby said looper
Y 13. In a machine for markingfabrics with a
can engage the thread and form a loop therein
thread extending through the fabric, a thread
and said lo-op shifter can shift said loop"lat<`-:rall5Í
carrying -needle, a reciprocatory needle support,
of the kpath of the needle when said looper and
tions, means for returning said looper- and loop
and retract the needle through the fabric, a base
shifter to their normal positions, and means for
forming a knot in the looped portion of said
thread.
on which the fabric is supported, a thread en
gaging looper and a thread loop shifter below
said base, a shaft on which said looper and
10. In a machine for marking fabricv with a 40 shifter are mounted, a gear on said shaft, a re
ciprocatory mutilated rack operable by said lever
thread, a thread carrying needle, actuating
means for passing the needle and thread through
the fabric from one side to the other, needle
retracting means, a looper normally positioned
engaging said gear to rock said looper and shifter
back and forth laterally of the path of said nee
dle, a knot forming device below said base, and
a second reciprocatory rack operable by said
lever and operatively associated with said knot
ter, said looper and loop shifter being movable
into thread engaging positions by said lever dur
ing advance of the needle and returnable to their
to one side of the path of the needle at said other
side of the fabric, a loop shifter positioned to
one side of the path of the needle at said other
side of the fabric, means operable by said needle
actuating means to move said looper and loop
shifter'past the path of the needle as the latter
is advanced and for returning said looper and
loop shifter to their normal positions as the
needle is retracted to engage and form a loop
in said thread and shift the looped portion of
the thread laterally of the needle, and means
operable by said needle actuating means for
forming‘a knot in the looped portion of said
thread between said looper and loop shifter.
normal positions by said lever during retraction
of said needle to form a loop in said thread and
to shift said loop into position to be engaged by
said knotter, and said knotter being operable by
said lever during retraction of the needle to
form a knot in the looped portion of the thread,
and means f_or freeing the knotted loop from the
'
knotter.
14. In a machine for marking plied fabrics
with a thread extending through the several
thread, a thread carrying needle, actuating 60 plies, a base having a fabric supporting surface,
a thread carrying needle, actuating means for
means for passing the needle and thread through
advancing said needle through the plies to a
the fabric from one side to the other, needle
point below said surface and retracting said nee
retracting means, a looper normally positioned
dle, a rack bar slidable in said base, connections
to one side of the path of the needle at said
between said bar and needle actuating means for
other side of the fabric, a loop shifter positioned
reciprocating said bar, a second rack on said bar,
to one side of the path of the needle at said
a pair of shafts journaled in said base below said
other side of the fabric, means operable by said
fabric supporting surface, gears on said shafts
needle actuating means to move said looper and
operable by said racks, a knotter on one of said
loop shifter past the path of the needle as the
shafts, a thread looper and a loop shifter on the
latter is advanced and for returning said looper
other shaft, reciprocation of said rack bar by
and loop shifter to their normal positions as the
said needle actuating means during retraction
needle is retracted to engage and form a loop
of said needle rocking said looper and loop shifter
in said thread and shift the looped portion of the
to form a loop in said thread and shift said looped
thread laterally of the needle, means for form
ing a knot in the looped portion of the thread 75 portion of the thread into position to be engaged
ll. In a machine for marking fabric with a
2,410,270
11
by said knotter and said movement of said rack
bar rotating said knotter to form a knot in the
looped portion of the thread, and means for re
moving the knotted loop from said knotter.
12
means for reciprocating said bar, a second rack
on >said bar, a pair of shafts journaled in said
base below said fabric supporting surface, gears
on said shafts operable by said racks, a knotter
on one of said shafts, a thread looper and a loop
15. In a machine for marking plied fabrics
shifter on the other shaft, reciprocation of said
with a thread extending through the several
rack bar by said needle actuating means during
plies, a base having a fabric supporting surface,
retraction of said needle rocking said looper and
a thread carrying needle, actuating means for
loop shifter to form a loop in said thread and
advancing said needle through the plies to a
point below said surface and retracting said nee 10 shift said looped portion of the thread into posi
tion to be engaged by said knotter and said
dle, a rack bar slidable in said base, connections
movement of said rack bar rotating said knotter
between said bar and needle actuating means
to form a knot in the looped portion of the
for reciprocating said bar, a second rack on said
thread, an ejector plate slidable in said base, said
bar, a pair of shafts journaled in said base below
said fabric supporting surface, gears on said 15 plate having a recess therein in which said looped
thread is received when positioned in operative
shafts operable by said racks, a knotter on one
relationship with respect to the knotter, and
of said shafts, a thread looper and a loop shifter
means for moving said plate away from said
on the other shaft, reciprocation of said rack
knotter to free the looped thread from the
bar by said needle actuating means during re
knotter.
traction of said needle rocking said looper and
17. In a machine for marking plies of fabric
loop shifter to form a loop in said thread and
with a thread, a base having a fabric support
ing surface, an arm extending over said surface,
a thread needle support slidable in said arm, a
ment of said rack bar rotating said knotter to
form a knot in the looped portion of the thread, 25 lever for depressing said needle support to move
the needle and thread through fabric on said
and means operable by said needle actuating
shift said looped portion of the thread into posi- ’
tion to be engaged by said knotter and said move»
means for removing the knotted loop from said
knotter.
-
surface, said lever comprising telescoping sec
tions pivoted to the arm and needle support re
spectively, means below said surface for engag
16. In a machine for marking plied fabrics
with a thread extending through the several 30 ing and retaining a loop of said thread below
said surface, means for forming a knot in said
plies, a base having a fabric supporting surface,
retained loop of thread, and connections between
a thread carrying needle, actuating means for
said lever and said loop retaining and knotting
advancing said needle through the plies to a
means for actuating both of said means.
point below said surface and retracting said
needle, a rack bar slidable in said base, connec 35
ROBERT L. DASHEW.
tions between said bar and needle actuating
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