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Патент USA US2407162

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Patented Sept. 3, 1946
' 2,407,162
7 UNITED STATES PATENT oFFrCE f
“ LooM SHUTTLE
‘John J.-. KaufmannpJn, Greenville, ‘S. ‘0., ass‘ignor
to ISteel Heddle Manufacturing ‘Company,
I Philadelphia,‘ Pa., a corporation of Pennsylvania
.
I
Y
Application J anuary‘13, ‘1944, Serial No. 518,038‘
54 Claims.
(Cl. 139——-223)
1
,
.
2
My invention relates to shuttles for looms, and
it relates more particularly .‘to the provision of
improved means for automatically threading the
Weft in shuttles of the type in which the C?lling
bobbin is ‘changed ‘from ‘time ‘to ‘time to replenish
the'supply of weft.
t
_
.
subjectedin use.
‘
The nature ‘and characteristic features oflthe
invention will 'be more readily understood from
the following description, taken ,in connection
with the accompanying drawing forming ‘part
'
The threading blocks originally used in auto
hereof, in which:
matically ‘threading ‘shuttles for ilooms were usu
'
,
,
Figure 1 is a top or plan view .of the threading
ally made of brass or other similar ductile mate
.rial.
.
shocksian‘d ‘jars to which the shuttle parts are
end portion of a loom shuttle embodying the main
features of the present invention;
By reason of the ease with which such
metal could be worked, not ‘only were the ‘ordi
nary machining operations facilitated, but also
certain portions could be readily :bent or formed,
when “desired, to the required shapes for effect
Fig. 2 is a side elevation thereof;
ing the threading operations.
Fig. 3 is a longitudinal central section thereof,
looking in a direction opposite‘ to that of Fig. 12.;
Fig. 4 is an outer end elevation of the ‘thread
It has for some time been recognized that
threading blocks made of roast ‘iron have much
threading block;
ing ‘block detached, and slightlyenlarged;
.Fig. 5 .is ‘a similar view in sidelelevationlof the
better wearing characteristics than those made
Fig. 6 is a similar vview comprising an inner end
of brass or other relatively soft ductile materials,
tending to longer life, and in fact enabling the 20
threading blocks to ‘be reused ‘in new shuttle
‘bodies after the wooden parts of the original
shuttles have become worn or damaged.
The principal Yobj ect vof the present invention is
to provide improved threading means for ‘auto
matically threading shuttles,
comprising
a
threading block, the main or body portion of
which maybe readily cast, preferably of cast iron,
elevation of the threading block; and
Fig. '7 is a section taken on the .line 1--1-,of
Fig. 5, still vfurther enlarged.
,
l
-
Referring to the drawing, in the particular em
bodiment of the invention therein shown, the
shuttle body this preferably made of wood, ‘and
has the usual bobbin chamber H in which the
bobbin I2 is held by the usual means ‘(not shown),
whereby it may be readily discharged therefrom,
and a new bobbinsubstituted therefor, as the?ll
and in which such ?nishing as required may be
ing runs out from time to'time.
V
done by machine operations of a simple aniline 30 The shuttle body I0 1is also provided with the
expensive character.
‘
usual side delivery eye I 3 for the passage of ‘the
A further object of the invention is to provide
?lling yarn. The sides of said ‘eye ‘may be pro
a threading block .for gloom shuttles in which ‘the
tected by hardened steel pins M and 15, or the
body portion is ‘made of ‘an integral casting,
like, ‘to ‘take the wear caused by ‘the run of the
which may preferably be cast iron or the like, ' ‘?lling. The pin FM is mounted ‘in the wooden
which is so shaped as to "operate .in an efficient
‘portion of the shuttle outwardly of the side de
and satisfactory manner.
livery eye 13, while the ‘pin I5 is carried ‘Eb-y the
.A further object of the invention 'is .to provide
threading block l6, to be hereinafter described.
in a ‘shuttle-of the character aforesaid,‘ a thread
The threading block 16, comprising ‘the prin
ing block which is vso shaped ‘that the ?lling 40 cipal novel element of ‘the present invention,
thread will be initially guided therethrough, to
‘the proper operating location, in a smooth and
easy ‘manner, whereby breaking of the ?lling 'on
‘the transfer of the bobbins ‘will be largely ‘elimi
nated.
A ‘further ‘object of the invention is to provide
a‘threading block with an improved form of ten
sion device of ‘the spring pressed plate type.‘
A further object of the invention is to provide, I
in a loom-shuttle of the character aforesaid, .im
proved means for adjusting the pressure of the
plates which are used for imparting the ‘tension
‘comprises primarily a single ‘integral casting,
preferably of a hard non-ductile material such
as cast-iron, and has its ‘body portion provided
with outer ‘side surfaces I1 and 18, preferably
parallel with ‘each other, and its bottom surface
I Bsubs'tantially a’t'right ‘angles thereto. ‘The ‘body
portion of the ‘threading block I6 is ‘?tted into a
complementally shaped groove 2|] in the ‘outer end
portion ‘of ‘the ‘body In ‘of ‘the shuttle, and by
50 reason of the shape of said ‘body-portion‘ of the
“threading block l6, said groove may ‘be easily
‘and conveniently cut in the body portion vl0 of
the ‘shuttle. ‘The body portion of the threading
to the ?lling thread, and for maintaining ‘such
block I6 is provided with a longitudinal chan
radjustmentwhen oncelmade, notwithstanding ‘the a 65 nel. 2-] through ‘which the ?lling thread passes
2,407,162
3
to the side delivery eye l3 during the weaving
operation as said ?lling is laid into the cloth.
The threading block I6 is provided with a rear
wardly and outwardly extending integral horn
position 22, which initially, in the rough cast~
ing, is also integrally connected to a forwardly
and outwardly extending lug 23 which constitutes
4
vide a transverse channel through which the
thread passes when the shuttle has been fully
threaded.
Adjacent the cutaway portion where the thread
passes from the longitudinal channel 2| in the
threading block iii to the aforesaid transverse
channel there is mounted a hardened steel pin
32, extending upwardly at a slight angle to the
vertical,
and around which the ?lling thread
of the threading block Hi.
In the making of the threading block IS, the 10 turns to pass to the delivery eye. At the outer
vend of the transverse channel the pin I5 is located.
connection between these two parts, to wit, the
which pin serves to minimize wear at the point
horn 22 and lug 23, is severed by a saw out, which
where the ?lling thread passes out through the
thereby provides an entrance slot 24, having op
side delivery eye.
posed parallel faces for the ?lling thread, to pass
The threading block H5 is preferably provided
therethrough during the threading operation. 15 at its inner end with spring pressed tension
This slot is cut with the saw disposed at an angle
plates 35, the lower ends of which are perforated
to the longitudinal aXis of the threading block
‘for the passing therethrough of a guide pin 36
Hi, and also inclined to the vertical, so that said
which is mounted in the lower inner end of the
slot 24 extends at a pronounced inclination
threading block IS. The upper ends of the ten
20
downwardly and forwardly.
sion plates or pads 35 are bent over in the usual
The projecting horn portion 22 is initially so
manner as at 31, and are guided in transverse
shaped, as to provide at the extreme rear there
apertures 38 provided in the upper part of the
of, a downwardly depending lip portion 25 which
threading
block.
assists in preventing the thread from becoming
disengaged from the threading block through 25 Hollow screws 39 are threaded in the side walls I
a continuation of one of the side wall portions
‘swirling or looping.
Likewise, the forwardly and outwardly extend
of the threading block l6, and in each of these
hollow screws 39 there is mounted one end of
a coil spring 40, the other end of which bears
against one of the tension plates 35 at a point
ing lug 23 is also provided with a downwardly
projecting lip portion 26 for a similar purpose.
By the foregoing arrangement there is pro 30 intermediate the ends thereof.
The foregoing arrangement of tension plates
vided a novel construction of the outer end of the
is
well known in the art, but considerable di?‘l
threading block, in which the thread entrance
culty has been encountered in the use of such an
slot 24 is provided with opposed parallel faces
arrangement by reason of the adjusting screws,
of appreciable area, and the planes of said faces
by
means of which the springs are held and po
are inclined not only to the longitudinal axis of 35
sitioned, being jarred to an extent sufficient to
the shuttle, but also inclined to the vertical. This
change the adjustment thereof.
arrangement not only by itself, but particularly
To avoid such a change of adjustment, there
in conjunction with the downwardly extending
is provided in each side wall of the threading
lip 25 on the end of the horn portion 22, as well
block, an aperture 4| adjacent the aperture in
as the lip 26 carried by the forwardly and out
which the spring screw 39 is threaded and over
wardly extending lug 23, will serve effectively to
lapping the threaded portions thereof. In each
prevent unthreading of the shuttle at this point
of these apertures 4| there is mounted a plug 42
during the operation of the loom.
of raw hide, vulcanized ?bre, or other similar
Intermediate the ends of the threading block
tough compact ?brous material, which plug 42
there is an auxiliary horn member 2'! which ex~
is inserted after the threads have been cut in
tends rearwardly and outwardly into the thread ~
the apertures in which the spring screws 39 are
channel 2| being integrally formed on one side
mounted, whereby the threads of the screws 39
wall, and initially integrally connected to the
will imbed themselves in the ?brous plugs 42,
other side Wall, but ‘being severed therefrom by
which will serve as effective brakes to prevent loss
a saw out which thereby provides a thread en
-50 of adjustment of said screws.
trance slot 28 at this point.
Iclaim:
It should here be noted that the thread en~
1. An automatically threading loom shuttle
trance slot 24 extends at a pronounced inclination
having a threading block the body portion of
downwardly and forwardly, whereas the thread
.which is made of a hard metal casting and pro
entrance slot 28 extends substantially parallel to
thelongitudinal axis of the shuttle and vertically 55 vided with a thread channel extending longitudi~
downward. It will therefore be seen that the
thread entrance slots 24 and 28 are not only ar
nally therethrough, said threading block having
an integral thread retaining horn portion at the
outer end thereof extending from one of the side
ranged with the planes of their faces at different
walls of the body portion toward an extension
angles but the same are also de?nitely out of
alinement with each other and unthreading of 60 of the other side wall thereof, said horn portion
being separated therefrom at its free end by a
the shuttle through overcasts or looping will be
thread entrance slot extending downwardly and
greatly minimized.
forwardly and having opposed parallel faces dis
In the bottom of the thread channel 2| in
posed in planes inclined to the longitudinal axis
the body portion of the threading block |6 there
are provided transversely extending hardened 65 and to the vertical, said horn portion also having
a downwardly extending lip at its free end, and
steel pins 29 and 30 which serve to take the wear
the oppositely disposed portion of the side wall
from the run of the ?lling thread in the bottom
also having a downwardly extending lip.
of the channel.
_
2. An automatically threading 100m shuttle
Disposed adjacent and beneath the rearwardly
and outwardly disposed horn portion 22 is a 70 having. a threading block the body portion of
which is made of a hard metal casting and pro
downwardly inclined lug 3| which serves to guide
vided with a thread channel extending longi
the thread downwardly toward the delivery eye i3
tudinally therethrough, said threading block hav
after the same has passed through the thread
illg an integral thread retaining horn portion at
entrance slot 24. The block is cut away at the
lower end of the aforesaid guide portion to pro 75 the outer end thereof extending from one of the
2,407, 162
5
side walls of the body portion toward an exten
sion of the other side wall thereof, said horn
portion being separated therefrom at its free end
by a thread entrance slot extending downward
and forwardly of the horn portion serving to
guide the thread into the transverse channel after
the same has passed through the thread entrance
slot and upon the return pick of the shuttle.
ly and forwardly and having opposed parallel
faces disposed in planes inclined to the longi
tudinal axis and to the vertical, said horn portion
also having a downwardly extending lip at its
free end, and the oppositely disposed portion of
4. An automatically threading loom shuttle
having a threading block the body portion of
which is made of a hard metal casting and pro
vided with a thread channel extending longi
tudinally therethrough, said threading block hav
the side wall also having a downwardly extend~ 10 ing an integral thread retaining horn portion at
ing lip, said threading block also having another
the outer end thereof extending from one of the
integral horn portion disposed intermediate the
side walls of the body portion toward an exten
ends of said threading block and extending from
sion of the other side wall thereof, said horn
one side wall toward the other, and being sepa
portion being separated therefrom at its free end
rated at its free end from said other wall by a 15 by a thread entrance slot extending downwardly
thread entrance slot extending vertically down
and forwardly and having opposed parallel faces
ward and having opposed parallel faces.
disposed in planes inclined to the longitudinal
3. An automatically threading loom shuttle
axis
and to the vertical, said horn portion also
having a threading block the body portion of
having a downwardly extending hp at its free
which is made of a hard metal casting and pro 20 end, and the oppositely disposed portion of the
vided with a thread channel extending longitudir
side wall also having a downwardly extending lip,
nally therethrough, said threading block having
said threading block also having another integral
an integral thread retaining horn portion at the
horn portion disposed intermediate the ends of
outer end thereof extending from one of the side
said threading block and extending from one side
walls of the body portion toward an extension of 25 wall toward the other, and being separated at its
the other side wall thereof, said horn portion
free end from said other wall by a thread en
being separated therefrom at its free end by a._
trance slot extending vertically downward and
having opposed parallel faces, said threading
thread entrance slot extending downwardly andf‘"
forwardly and having opposed parallel faces dis-l ‘
posed in planes inclined to the longitudinal axis so
and to the vertical, said horn portion also hav-V _
ing a downwardly extending lip at its free end,
and the oppositely disposed portion of the side‘
wall also having a downwardly extending lip, said
threading block also having at its outer end a
transverse channel extending from the longitudi-f
as
nal channel to the side delivery eye of the shuttlef '
and a downwardly inclined lug portion below’ '
block also having at its outer end a transverse
channel extending from the longitudinal channel
to the side delivery eye of the shuttle, and a
downwardly inclined lug portion below and for
wardly of the horn portion serving to guide the
thread into the transverse channel after the
samehas passed through the thread entrance slot
and upon the return pick of the shuttle.
JOHN J. KAUFMANN, JR.
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