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Патент USA US2133229

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Oct. 11, 1938.
2,133,229
c. F. RUBEL
SEWING MACHINE
'
5 Sheets-Sheet 1
Filed May 21, 1936
WITNESSES:
56'
INVENTORQ
.
?harlas ?’RubeD,
BY
TORNEYS.
,
'
Oct, 11,1938.
c. F. RUBEL
2,133,229
SEWING MACHINE
Filed May 21,- 1936
5 Sheets-Sheet 2
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“I.
INVENTORQ -'
Oct. 11, 1938.
2,133,229
C. F. RUBEL
SEWING MACHINE
-
Filed May 21,
'
1936
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INVENTOR:
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Oct. 11, 1938.
c. F. RUBEL
2,133,229
SEWING MACHINE
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Filed May 21, 1936
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WITNESSES:
‘
I N VEN TOR:
~ \BY
Charles F RuZmL,
TORNEYS.
Oct. 11, 1938.
C. F. RUBEL
2,133,229
SEWING MACHINE
Filed May 21, 1956
5 Shee‘ts—Sheet 5
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Charla; F Rahal,
BY
TORNEYS
"2,133,229 1
Patented on. 11, 1938
UNITED STATES
PATENT ’ OFFICE
' 2,133,229
7
SEWING MACHINE
Charles F. Rubel, Chicago, Ill., assignor to Union
Special Machine Company, Chicago, 111.‘, a cor
poration of Illinois
Application May 21, 1936, Serial No. 80,943
16 Claims. (CL- 112-'-—16)
This invention relates to sewing machines; cup feed sewing machine, incident to performance
and it has reference more particularly to what
are known as “cup feed” sewing machines where
-- in the fabric'edges which are to be united, a're‘fed
5 between a pair of tangentially-arranged -inter
mittently-rotated wheels or cups and thereby
. advanced progressively relative to the seaming
instrumentalities of the machine.
.
-
' A sewing machine of the type speci?cally re
10 ferred to is featured in U. S. Patent 2,043,711
granted to the present applicant and: Anton Wy
leta on June 9, 1936, the same having three thread
manipulating instrumentalities, to wit,‘ a longi
tudinally reciprocating needle, a-looper with both
of one of the loop forming cycles.
_
The cup feed sewing machine herein illustrated
is,~general1y speaking, like the one featured in '
the patent, supra, and, as shown, comprises ‘a 5‘
hollow housing in the form of a standard I with
a lateral projection‘ or head 2 at the top thereof.
Suspended from the head 2 is a pair of tangen
tially-arranged, circumferentially-knurled feed
wheels or cups 3 and 4, which are secured to the 101
lower ends of vertical shafts 5 and 6 extending
up into the hollow of said head._ The shaft 5, see
Fig. II, consists of ‘two aligne‘d sections 5a, 5b
which are loose-coupled at ‘I, the upper section
l5 oscillatory and needle following movements, and ' So being journaled in a?xed bushing 8‘ set into 15
the head 2, and the lower section 5b journaled in
alone in cooperating with said needle and looper. _:~ a bracket’bearing 9 fulcrumed at IU so that the-
a spreader con?ned to oscillatory‘ movement
The machine produces a two-thread over-edge~ cup .3' can be swung outwardly away from the
seam which is not altogether satisfactory forcer
_'cup“ [to facilitate insertion of the fabric edges,
20 tain classes of workrfor example,'in seaming full VF and-F’ (Figs. III-VII) between them. Suitable 20 .
fashioned hosiery and the like, due to its tendency - spring .means (not illustrated) in?uential‘ upon
to gap.
.
.
the bearing. bracket 9, serves to maintain the feed ‘I
.
My invention is directed toward making possi
cup _3 inyielding engagement with the companion
The foregoing and other ‘attendant advantages
an adjustable pivotal connection at ll with an
upright arm l8 on a rock shaft [9 journaled with- 35
ble theconversion of a cup feed sewing machine 'feedcup 4. ‘The shaft 6 for the feed cup‘ll is
journaledin a ?xedbearing II on the machine 25
25 of the speci?cally indicated sort, for the produc
tion of three-thread overedge seams which are housing, and secured to its upper end within
‘ proof against gapping, without necessitating the the head 2, is a spur gear wheel l2 which meshes
aid of ‘ thread manipulating instrumentalities with a similar ‘spur gear wheel l3 at the top of
other than those already on-the machine,‘ and the, upper section 5a of the shaft 5-for the cup 3
‘ 30 without requiring any changes whatever in the so that the two cups are driven in unison. Inter- '30
mittent rotation is imparted to the cups 3 and 4
motionlof said 'instrumentalitiesor in the con
through the’ medium of a rotary clutch device 15
struction and arrangement of the mechanism re
on the shaft 6 actuated by a link ‘rod l6 having
lied upon to actuate them.
3‘, I attain as hereinafter more fully described,
through a slight change in, the instrumentality
which heretofore functioned solely as a. spreader
whereby the same is adapted to perform ‘in the
added capacity of a looper. for carrying and
i I) manipulating a third yarn; and by providing suit
able facilities for guiding and tensioning this
third yarn enroute to said instrumentality. .
In the drawings,
_
Fig. I shows‘, in elevation, one side of a cup,
45 feed sewing machine conveniently embodying my
invention.
'
.
.
'
>_
Fig. II is a fragmentary view drawn toa larger
‘scale and showing-the machine'in longitudinal
section.
50
'
'
'
Fig. III is a fragmentary plan section along a
‘staggered plane indicated approximately by the
arrows III-III in Figs. Land H.
in the machine housing I. Rocking movementv is
imparted to the shaft [9 by virtue of the co
ordination of a horizontal arm 20 thereon with
the rod 2| of an eccentric strap 22 whichem
braces an eccentric (not shown) on a'transverse 40
drive shaft 23 whereof ‘the opposite ends ‘are
iournaled in oil tight bearings afforded by the'_
side walls of the housing. The drive shaft 23
extends‘ to the exterior of the housing I at the
side of the machine shown in Fig. I, and has there 45
secured to it a combined hand wheel and pulley
24 whereby the machine ‘may be actuated either
manually or under power. The needle 25 of the
machine operates directly above the edges of the
feed cups 3 and 4 at the region of tangency ‘of 50
the latter,and is ?xed in- the outer end‘ of a re
ciprocating horizontal supporting member in the
Figs. IV, V, VI and VII are fragmentary per-' form of abar 26 which is guided for axial or end
.spective views showing the positions assumed by ' wise, movement in’ an oil tight“ connection or bush
55 the thread manipulating elements of my improved
ing 21 set'into the front wall 28 of the housing 55
2
2,138,229
I, see Figs. II and III. From Fig. III it will be
observed that the feed cup shafts '5 and 5 are
disposed in a vertical plane at an acute angle to
the vertical plane through the path of movement
of the needle‘ 25. At its inner end within the
housing i, the needle bar 26 is coupled, by means‘
thread 51. As a result of this change, the in
strumentality 45 is made capable of performing
in the added capacity of a supplemental thread
carrying looper in a manner presently explained.
Forpurposes of distinction, the instrumentality
45 will be hereinafter referred to as the "supple
mental looper”. On its way to the supplemental
looper 45 from a supply source (not shown) the
usual thread carrying looper of the machine is. additional thread 61 ?rst.passes through a ten
10 designated 3| and, as shown, is adjustably se
sion device 69 positioned adjacent the tension de 10
' cured by a set screw 32, in a transverse aperture vice 58 for the looper thread 51 at the side of
at the outer end of a supporting member or bar 33 the machine pictured in Fig. I, then through a
which extends at a slight upward inclination to ?xed guide eye 10, and then over a guide ?nger
the horizontal into the interior of the housing i. 1| (Figs. I .and II) secured to the underside of
From Fig. II it will be noted that the bar 33 is the head 2 of the machine housing, and ?nally 15
journaled, with capacity for combined axial and through the guide eye 62 through which the
of a pitman 29 with an actuating crank 30 on the
drive shaft 23 of the machine, see Fig. II. The
oscillatory movement, in oil tight bearing bush? thread 51 also passes as hereinbefore explained.
ings 34 and 35 set respectively into the front and
rear walls 28 and 35 of the housing I. Oscilla
20 tory movement is imparted to the looper bar 33
The loop forming cycle of the machine is as
follows:
-
_
I
a
'
In Fig. IV the supplemental looper 45 has just 20
from the drive shaft 23 through'an eccentric released a loop 12 of the looper thread 51 and is
strap rod 31 whereof the upper .end engages a‘ nearing the limit of its upward swing; while the
pin 38 extending laterally from a block 39 which looper 3i is swinging forward crosswise of the
is secured to said bar within the housing. in the needle through the needle thread loop 13 and at
25 interval between the bushings 34 and 3.5. The the same time following the needle 25 which has 25
bar 33 receives its endwise movements from an
already started on its retractive stroke. In Fig.
other crank 40 on the drive shaft 23, said crank V, the looper 3| has reached the limit of its for
‘ being connected by means of a pitman M, with 'ward swing, holding the needle thread loop 13
the lower end of a rocker arm 42 fulcrumed to. and still following ‘the needle 25 but at a de
30 swing on the ?xed center 43 and having its up
celerating rate; while‘at the same time, the sup 30
per end in turn coupled, by means’ of a link 44, plemental looper 45 is moving down immediately
with the block 39 on the said bar. The other behind .said looper 3i and engaging the looper
thread manipulating instrumentality 45 of the
thread 51. In Fig. VI, the supplemental looper
machine is con?ned solely to oscillatory motion
35 about the axis of another upwardly-inclined sup
-45 has reached the limit of its downward swing
crosswise of the needle 25, with the new loop 14 35
porting member or bar 46 which‘ extends sub- . of the thread 51 arrested in its hook 68, andihas
stantially parallel to the looper rod 33 and to the positioned the thread 61 so that said needle can
pass over it on its next advancing stroke. In
outer end of which said instrumentalitya is se
cured. As shown in Fig. II, the bar 46 for the Fig. VII, the looper 3| has just released the nee
dle thread loop 13 and is nearing the limit of its 40
40 instrumentality 45 is journaled in an elongated
oil tight bushing 41 secured in the front wall 28 retractive swing, while the needle 25 is advancing
over the thread 51 to hold the latter during the
of the housing I. Within the housing I a later
ally extending pin 48 on the bar 46 connects with succeeding upward swing of the supplemental,
the upper end of an eccentric strap rod 49 which ' looper 45.
The parts thereupon all return to the
position shown in Fig. IV for the initiation of the 45
next loop forming cycle, which, of course, occurs
immediately after advance of the two fabric edges
F, F.’ by the feed cups 3 and 4. ‘During the
functioning of the needle 25 and the thread
tangency of the two feed cups 3. and, 4 by an arm ' manipulating instru-mentalities 3| and 45 as just
5i _at the bottom end of an adjustably-?xed explained, the seam loops are formed over the
stitch ?nger 50 .in a manner well known in the
bracket 52 pendant from the head 2 of the hous
ing l. The needle thread 53 is drawn from a art.
.
suitable source of supply (not shown) through a
Having thus described my invention, I claim:
tension device 54 at the side of the. machine
l.v In a sewing machine, a pair of feed cups for ,
remote from the observer in Fig. I,’ then passes advancing between them a number of fabric
under a ?xed guide ?nger 55, then to a guide eye edges which are to be'united;v a reciprocating
is actuated by another eccentric (not shown) on
the drive shaft 23.
The usual stitch tongue indicated at 50, over
which the seam loops are formed, is supported
directly above the needle 25 and in the plane of
- 56 on the needle bar 26 and ?nally to the eye
of the needle 25. The looper thread 51, on the
60 other hand, ?rst passes through a tension device
58 at the near side of the machine in Fig. I, then
through a ?xed guide eye 59, then to a spring
needle; av cooperating thread carrying looper
for engaging‘the thread of the needle and draw
ing loops therefrom, said llooper having oscilla
tory movement crosswise of the needle .as well
as bodily movement in the direction of the needle;
take-up 50, then through another ?xed guide eye and a supplemental thread-carrying looper con
' 5|, then to a guide eye 62 at the outer end of‘ ?ned to oscillatory movement crosswise of the
65 the looper bar 33, andflnally to-the looper 3|. needle to cooperate with said needle and the ?rst
'
I
In order to convert a cup feed sewing machine mentioned looper. .
2. In a sewing machine, a pair of feed cups for
such as described for ‘the purposes of my inven
tion, I slightly .alter the. form ‘of the instrumen- . advancing between them a number: of fabric
edges which are to be united, a reciprocating
ta'lity 45 from that shown ‘in the patent herein
70 beiore referred to, that is to say. I provide said needle; a cooperating thread carrying looper for 70
instrumentality with eyes 53 and 64, respectively, engaging the thread of the needle and drawing
at the toe and-heel ends of its tongueportion' l5, loops therefrom, said looper having oscillatory
and with a connecting groove 06 between said eyes
movement crosswise of the needle as well as
forv passage of a third yarn 61. as well as with a
bodily movement in the direction of the needle:
and a supplemental thread-carrying looper hav
91 hook 68 at said heel for controlling the looper
2,138,229
3
ing a tongue end to draw loops, from the thread
horizontally-arranged reed cups supported at an
of the ?rst mentioned looper, and a projection on
said tongue to control the ?rst looper thread-r
them a number of fabric edges which are to be
100135.
,united;'a needle movable crosswise ‘of the top‘
elevation. by said housing fonadvancing between
'
3. In a sewing machine, a pair of feed cups‘ edges. of _ the two feed cups in the region of their '
tangency; a horizontal needle bar extending
through a guide bearing into the interior of the
for advancing between them'a number of fabric
edges which are to be united; a reciprocating
needle; a cooperating thread-carrying looper for
housing; a thread-carrying looperfor drawing
engaging the thread of the needle and drawing ' needle thread loops from the needle; a bar sup
10 loops therefrom, said looper having'oscillatory
movement crosswise of the needle as well as
porting the looper and extending at an upward
inclination to the horizontal through abearing
bodily movement in the direction of the needle;
and a supplemental thread-carrying looper con
»?ned to oscillatory movement crosswise of 'the
15 needle, said supplemental looper having a tongue
end to draw loops from the thread of ‘the ?rst
‘mentioned looper, and a projection on said
into the interior of the housing; a. supplemental ‘
thread-carrying looper to take' the thread ‘of '
the ?rst mentioned looper and draw loops there
from; a bar‘ carrying the supplemental looper
and likewise extending at an upward inclination
,to the' horizontal‘ into thehousing; and mecha
tongue to control the ?rst looper thread loops.
nism within said housing operative to effect, in
4. vIn a sewing machine, a pair of feed cups forv timed relation, intermittent rotation of the said
20 advancing between them a number of_ fabric feed cups, endwise reciprocation of the needle bar,
edges which are to be united; a reciprocating combined oscillatory and endwise movement of
needle; a cooperating thread-carrying looper for - the ?rstlooper bar, and oscillatory movement
drawing-loops from the thread of the needle; a‘ alone of the'supplemental looper bar.
' bar supporting the looper; means for oscillating
25 the bar to move the looper crosswise of the‘needle
and for reciprocating it endwise to concurrently
move the looper in the direction of the needle; a
supplemental thread-carrying looper to draw
"so
loops from the thread of the ?rst mentioned
looper; a supporting bar for the supplemental
looper; and means for oscillating the last men_--
8. In a sewing machine, a housing. with a-later
ally projecting head; a horizontally-reciprocating 25
needle bar and a needle carried thereby beneath
said head; vertical shafts mounted in ‘and de
pending from said head, the plane of saidshafts
being'at an acute angle to the‘path of needle
movement; wheels at the lower vjends of said 30
- shafts for ‘feeding a number: of fabric edges; and
individual thread-carrying instrumentalities' co-v
tioned bar to move the supplemental looper cross
wise of the needle in timed relation with the
latter and the ?rst looper.
35
operating withv said needle _in forming a three
thread overedge seam to ‘unite the fabric edges.
'9. In a sewing machine, a housing having a 85.
.
5. In a sewing machine, a pair of feed cups
for advancing between thema number of'fabric
laterally-projecting head; a horizontally-‘recipro
edges which are to be united; a reciprocating
cating needle bar and a needle carried by said
needle; a cooperating thread-carrying looper for
drawing loops of, the thread on the needle; a
40 bar supporting the looper; means for oscillating‘
the bar to move the looper crosswise of the
bar beneath the head; vertical shafts mounted
_in and depending from said head, the axes of
said shafts being in azplane at an acute angle
needle and for reciprocating it endwise to move
the looper in the direction of the needle; a
at the lower, ends of said shafts for feeding a
number of fabric edges; a thread carrying. loop
to .the path_ of ‘needle; movement; feed wheels
supplemental thread-carrying looper to engage.
er; means;'supporting said looper for oscillation ‘
into and 'out of-gthe needle thread loops and
for movement laterally to a position over the
45 the thread of the ?rst mentioned looper and to
draw loops therefrom, said supplemental looper
vhaving a projection to control the ?rst looper
thread loops; a supporting bar for the supple
mental looper; and means for oscillating the
50 last mentioned bar to move the supplemental
looper crosswise of the needle in timed relation
with the latter and said ?rst looper.
6. In a sewing machine, a housing; a pair'of
20'
fabric ;edges,;1'and a'supplemental thread carry-.
ing looper; cooperating with the ?rst mentioned“
looper-and the needle in the formation of a' three ~
thread overedge seam.
‘
v10. In a sewing machine, a'housing with a lat
so
terally-projecting head; a pair of feed cups sus
pended from the head for advancing ‘between
them a number of fabric edges which are tolbe
55 elevation by the housing for advancing‘ between united; a needle movable crosswise of the top 55
them a number of fabric edges which are to be edges of the two feed ‘cups in the regionjoi their
united; a needle movable crosswise of the upper ‘ __tangency; a horizontal needle-supporting bar ex
edges of the two feed cups in the region of their ‘ tending through a guide bearing into the interior
tangency; a horizontal needle bar extending of the housing; a; thread-carrying looper for
60 through a guide bearing into the interior of the drawing needle ‘thread loops from the needle; a 60
housing; a thread-carrying looper for drawing bar supporting the looper and extending through
‘a bearing into the interior ofv the housing; a
_needle thread loops from the needle; a bar-sup
porting the looper and extending through a bear
supplemental thread-carrying looper to take the
' _ing into the interior of the housing; a‘supple
thread of the ?rst mentioned looper and draw
65 mental thread-carrying looper to take the thread loops therefrom; a bar carrying the supplemental 65
of the ?rst mentioned looper and draw loops looper and likewise extending into the housing;
horizontally-arranged feed cups supported at an
therefrom; a“ bar carrying the supplemental
looper and likewise extending into the housing;
and mechanism within the housing operative to
70 eifect, in timed relation, intermittent rotation
of the feed cups, endwise reciprocation of the
needle bar, combined oscillatory and endwise
75
and mechanism within said housing ‘operative to
effect, in timedrelation, intermittent rotation of
the feed cups, endwise reciprocation of the nee
dle bar, combined oscillatory and endwise move 70
ment of the ?rst looper bar, and oscillatory ‘
movement of, the looper bar, and oscillatory
movement alone of the supplemental looper'bar.
1'1.'In a sewing machine, a housing with a,
movement alone of thesupplemental bar.
7. In a sewing machine, 'a housing; a pair of
feed cups suspended from the head for advanc
laterally-projecting head at its topya pair of
2,138,229
ingpbétween them a number of fabric edges which
‘fate-5150 be united; a needle movable crosswise of
forming a three thread overedge seam about the‘,
r-the?top edges of the two feed cups in the region
fabric edges.
the ?rst mentioned looper and said ‘needle in
dle; a bar supporting the looper and extending
carrying instrumentalities also exteriorly of the
housing for forming an over-edge uniting seam '
at an upward inclination to the horizontal
10 through a bearing into the interior of the hous
wherein individual loops of the threads of the v10
cooperative instrumentalities are concatenated
with each other and with the needle thread loops;
supporting members for said needle and said in
strumentalities respectively con-?ned to move
ment in ?xed axial lines and extending through 15
ing; a supplemental thread-carrying looper to
take the thread of the ?rst mentioned looper and
draw loops therefrom; a bar carrying the sup
plemental looper and likewise extending at an
upward inclination to the horizontal into the
housing; and mechanism within the housing op
erative to effect in timed relation, intermittent
rotation‘ of the feed cups, endwise reciprocation
of the needle bar, combined oscillatory and end
20 wise movement of the ?rst looper bar, and oscil
oil tight connections into the interior of the
housing; and mechanism within the housing for
actuating said supporting members.
'
15. In a sewing machine, a closed housing;
means exteriorly of the housing for feeding a‘ 20
number of fabric edges; a thread-carrying nee
latory movement alone of the supplemental loop
er bar.
.
14. In a sewing machine a closed housing;
means exteriorly of. the housing for feeding a
number of fabric edges; a thread-carrying needle
and a plurality of cooperative individual thread
of their tangency; a-horizontal needle bar ex
tending through a guide bearing into the in
terior of the housing; a thread-carrying looper
for drawing needle thread loops from the nee
. dle and a pair of cooperative individual thread
4
12. A sewing machine for forming a three
thread overedge seam, comprising a drive shaft;
feed wheels for supporting and advancing a num
ber of fabric edges in a vertical plane; a needle;
carrying instrumentalities also exteriorly of the
housing for forming a three-thread over-edge
a point adjacent the feed Wheels to a point ad
jacent said drive shaft; means operated by said
30 drive shaft for reciprocating said needle bar; a
looper; a looper bar mounted for oscillation and
endwise movement on a ?xed axis and extend
ing from a position adjacent the feed wheel to
a position adjacent said shaft;rmeans operated
by the shaft for oscillating the looper bar and
needle thread loops; individual supporting mem
bers for said needle and said instrumentalities
uniting seam wherein individual loops of the 25.
threads of the two cooperative instrumentalities '
a bar carrying said needle and extending from . are concatenated'with each other and with the
requiring only rotary or longitudinal reciproca 30
toryr motion to effect loop formation; oil tight
connections where said instrumentalities pene
trate a wall of the housing; and mechanism with
in the housing for actuating the supporting mem
bers as aforesaid.
_
-
'
16. In a sewing machine, a closed housing; feed
for moving it endwise; a supplemental thread-_
carrying looper cooperating with the?rst men l wheels exteriorly of the housing for supporting
tioned looper and the needle; a bar supporting and advancing a number of fabric edges‘; 2.
thread-carrying needle and a pair, of cooperat
said supplemental thread-carrying looper mount
ed for oscillation-about a ?xed axis extending ing individual thread-carrying instrumentalities
also exteriorly of the housing and above the feed
Wheels for‘forming a three-thread over-edge unit
ing seam wherein individual loops of the threads
of the two cooperative instrumentalities are con
from a point adjacent the feed wheels to a point
adjacent said shaft; and means operated by said
shaft for oscillating the last mentioned bar.
13. In a sewing machine, opposed feed wheels
for supporting and advancing a number of fabric
45
' edgesin a vertical plane; a needle and means
for imparting endwise movement thereto; a loop
35
-
catenated with each ~other and with the needle 45
thread loops; actuating mechanism within the
housing; and individual bars or shafts respective
‘a position above one of the feed wheels to a posi
ly con?ned to movement in ?xed axial lines and
having oil‘ tight connections with a wall of the
housing whereby the necessary movements are
communicated from the actuating mechanism to 60
the feed wheels, the needle and the cooperative
tion above the other feed wheel; and a supple
instrumentalities aforesaid.
er and- means ‘for oscillating it about a ?xed
axis ‘and for reciprocating it in the line of said
axis whereby said looper is moved in the direc
-50 tion of feed as well as transversely thereof from
mental thread-carrying looper cooperating with
CHARLES F. RUBEL.
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