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Патент USA US3037541

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June 5, 1962
H. T. SIMMONS
3,03 7,530
COP GRIP HOLDER FOR A >WEAVER'S SHUTTLE
Filed Nov. 25, 1959
H
ENRY
BY 9 á
_Il_NvëNToR.
.
I'MMONS
A
AT TORNEY
.
United States Patent O M1C@
3,037,530
Patented June 5, 1962`
1
2
3,037,530
In accordance with the present invention, FIGURE 1
shows a shuttle 10 having a cavity 11 formed therein by
COP GRIP HOLDER FOR A WEAVER’S
SHUTTLE
the sides 18 of the shuttle for receiving a cop of yarn.
A pair of stops 13 is formed at the rear end of the cavity
Henry Thomas Simmons, 167 E. Genesee St.,
11 for retaining a cop grip holder, as will appear. An
Skaneateles, N.Y.
opening
12 is formed through the bottom of the shuttle
Filed Nov. 23, 1959, Ser. No. 854,670
near the front end thereof, which will be more fully ex
5 Claims. (Cl. 139-198)
plained. An eye 14 is formed through the side of the
shuttle near the front end of the shuttle, through which
This invention relates to weaving apparatus, and more
particularly to a cop grip holder for a weaver’s shuttle. 10 the yarn travels as the shuttle moves through the loom.
A groove 15 is conventionally formed in the side of the
This application is a continuation-impart of my application
shuttle to `further guide the yarn therefrom into the fabric.
Serial Number 539,106, ñled October 7, 1955, now U.S.
A cop grip holder 20 is illustrated in FIGURE 1 ready
Patent No. 2,914,095, for a Cop Bobbin and Cop Grip
Lfor insertion into the cavity 11 of the shuttle 10. The cop
Holder.
grip holder may be described as having a substantially
Formerly, a weaver’s shuttle was provided having a
tubular body forming an interior 21. The body of the
grooved cavity therein into which was inserted a cop of
-holder 20 is not continuous, but is formed with edges 25
yarn wound on a bobbin plug in a manner whereby the
forming an opening therebetween. Stops 24 `are formed
turns of yarn of the cop would iit the grooves of the cavity
on one end of the holder for being slidably engaged under
of the shuttle. The yarn was unwound from the inside
of 4the cop at the rear thereof and travelled .through an 20 the stops 13 on 4the shuttle when the holder is placed in
the cavity y11. A large tab 26 and small tabs 27 are
eye formed in the shuttle as the shuttle travelled through
`formed at the other end of the holder 20 for locking it
the loom. It is pointed out that the inside rear end of
in place in the shuttle, as will appear.
the cop is shaped somewhat like the inside of a cone,
A cop of yarn 22 is wound on a bobbin plug 23 and the
whereby as lthe yarn was unwound the cone would have
a tendency to collapse so that several turns of yarn would 25 cop and bobbin are inserted into the top grip holder Z0 as
shown in FIGURE l. The end 43 of the yarn wound
on the cop 22 unwinds from the outside of the front end
the knot reaches the eye of the shuttle and stops, causing
of the cop 22.
the yarn to break. Slugging is caused, in addition to the
With reference to FIGURES l and 2, the locking means
collapsing of the cop, by the looseness of the cop itself
as it is contained in the cavity of the shuttle. Firstly, the 30 for the cop grip holder 20 in the cavity 11 of the shuttle
10 will be fully understood. A spring lock 3i) in the form
cop is retained in lthe cavity by the attaching of the
of a plate member with a central opening formed there
bobbin plug therein.V Secondly, as the picker stick of the
through is mounted axially slidable in the cavity 1,1 of
loom strikes the shuttle a hammer-like blow to send the
the shuttle in the front end thereof. Locking means for
shuttle across the loom, the impact of the yblow causes
the cop grip holder 20 is provided in the form of notches
the cop to break up and lie loosely in the cavity. Thus,
28 and 29 formed in the spring lock 30. The notches
slugging, with much waste of yarn and time, is the result;
281and 29 are aligned respectivelypwith the tabs 26 and 27
with the further disadvantage that the Weaver must re
of the cop grip holder 20 when the holder is in place in
move the damaged cop and replace it with a new one.
the cavi-ty of the shuttle. A pair of rods 31 are located in
It is therefore a main object of this invention to provide
a cop grip holder for a weaver’s shuttle wherein the yarn 110 the bottom of the cavity 11, held in place by lugs 32 or
the like yfastened in the cavity, and are placed through
is held under constant and even tension throughout the
suitable holes in the spring lock 30 so that the spring lock
length ofthe cop.
30 may `slide forwardly and backwardly on the rods 31.
It is another main object of this invention to provide
A compression spring 33 is disposed around each of the
that the yarn to be unwound from the outside of the front
rods 31 between the »front end of the cavity 11 and the
end of the cop, rather than from the inside of the rear
spring lock 30 to normally urge the spring lock 30 for
end of the cop.
wardly towards the cavity 11 and against the lugs 32,
Another object of this invention is to provide for con
which form a limit stop for the spring lock 30. Guide
stant and adjustable tensioning of the yarn after it is un
plates 34 at the top of the body of the shuttle 10 also
wound from the cop, and as it passes to the eye of the
guide the spring lock 30 when it is moved, as will appear.
shuttle.
A plate 36 forms the end of the cavity 11, and is provided
Another object of the invention is to provide means for
with a yarn gate 35 in the form of a notch through which
quickly engaging and disengaging the cop grip holder in
form a knot. This condition is known as “slugging” when
the shuttle.
.
the end 43 of the yarn -travels as it unwinds from the
In carrying out the objects of the invention there is
provided a cop grip holder for having placed therein a
cop 22. A tubular yarn guide 37 extends rearwardly from
the yarn gate 35 towards the cavity‘ll, and through which
cop of yarn, and which exerts a gentle even pressure on
the entire cop when the holder is placed in a shuttle.
There is also provided a spring lock in the shuttle for re
the yarn end 43 passes on its way to the eye 14 of the
shuttle.
A spring loaded yarn tensioner 38 is mounted on a
taining the cop grip holder therein, whereby the yarn is
suitable pivot P, and is constantly urged against the yarn
caused to unwind from the cop from the outside front end 60 gate by the urging of a spring 42 Iacting against an ex
tension 41 of the tensioner 38. The end 39 of the lten
thereof and pass through tensioning means to the eye of
sioner 38 is engaged by an adjusting screw 40 mounted
the shuttle.
through a threaded bushing 16 in the opening 17 of the
The invention consists of the features of construction,
4shut-tle v‘10. Movement of the adjusting screw 40 deter
combination and arrangement of parts herein fully de
scribed and claimed, with reference to the accompanying 65 mines the size of the opening at the yarn gate 35 and
the tension of the spring 42 for controlling the tension
drawings, in which:
FIGURE l is an isomeric view of a weavcr’s shuttle
and a cop grip holder having a cop of yarn therein -ready
placed on the yarn as it passes to the eye 14 of the
shuttle 10. It will be seen that in this case, movement of
the screw 40 inwardly will reduce the tension applied on
v
FIGURE 2 is a top plan view of -the shuttle, in part, 70 the yarn at the yarn gate 35 by increasing the gap be
tween the 4tensioner 38 and the yarn gate 35, and con
with parts cut away to show the spring lock and yarn
versely.
tensioning means.
for insertion into the shuttle.
3,037,530
the shuttle through the loom, the impact of the blow gen
The operation of the invention is as follows:
erally tends to dislodge ythe cop 22 from position or to
A cop 22 of yarn wound on a bobbin plug 23 is placed
at least break up the cop and cause the yarn to snarl
through the rear end of the cop grip holder 20 as shown
and backlash. Inasmuch as the cop 22 of the present in
in FIGURE l. At this time the cop grip holder 20 exerts
little pressure on the cop 22. The holder 29 is then placed 5 vention is firmly held with the bobbin plug 23 in the cop
grip holder 20, the cop can not move or become dis
in the cavity 11 of the shuttle 10 by tilting the rear end of
lodged. Further, the cop can not be broken up because
ythe holder 20 downwardly and sliding the holder so that
of the constant pressure exerted thereagainst by the squeez
the stops 24 thereof are engaged slidingly under the stops
ing action of the body of the holder 20. However, the
13 of the shuttle.
holder 20 itself is the only movable element in the as
The following procedure is followed to lock the holder
sembled shuttle and holder; and furthermore, can only
20 in place. The shuttle 10 is placed on any suitable
move when the spring lock 30 is moved. Thus it is that,
table or bench, not shown, so that an upstanding pin or
the like, not shown, protrudes through the opening 12
and slightly into the cavity 11 to engage against the spring
lock 30. A rearward sliding movement of the shuttle 10
on the table by the operator causes the spring lock Sil
to be retracted towards the front of the cavity 11 against
the urging of the springs 33 due to the fact that the pin
on the table is engaged against the spring lock 30. The
operator then pushes thel cop grip holder 20 and the in- serted cop of yarn into the cavity r11 of the shuttle 10 by
pressing downwardly against the tabs 27. At the same
time, the operator permits the shuttle 10 to move in a
forwardly direction so that the spring lock 3G is released
and is urged backwardly toward the normal position
against limit stops 32 by the urging of the springs 33.
It will be seen that the tab 26 will occupy the notch 28
in the spring lock 30, while the tabs 27 will occupy the
notches 29. Following insertion of the tabs 26 and 27
into their respective notches 28 and 29, the operator re
leases the thumb pressure against the tabs 27, permitting
the upturned ends thereof to latch behind the body plate
of the spring lock 30, whereby the cop grip holder 20 and
the inserted cop 22 of yarn is securely locked in the
cavity 11 of the shuttle. A conventional yarn hook is
then inserted through the' eye 14 of the shuttle, past the
yarn gate 35 and into the holder 20 for drawing the end
43 of the yarn out through the eye 14 of the shuttle,
and the whole assembly is ready for use. It will be seen
that all of the above procedure takes only a few seconds
following the impact of the blow of the picker stick
against the shuttle to drive the shuttle through the loom,
the inertia of the cop grip holder 20 (with the inserted
cop and bobbin plug) and the spring lock 30 may cause
the holder 20 and lock 30 to slide slightly in the cavity
11 against the urging of the springs 33, which in turn
return the holder 20 andthe lock 30 to their normal posi
tion in the cavity l1 of the shuttle 10 when the inertia is
overcome. Therefore, with the cop and bobbin plug im
movably held in the holder 20 and the whole being mov
able as an entity within the cavity of the shuttle, it is
nearly impossible for the cop to become broken or dis
' lodged from its proper position. Thirdly, it is seen that
the yarn 43 is unwound from the outside front of -the
cop 22. That is to say, the front end of the cop 22 ap
pears as the outside of a cone, from which the yarn is
unwound with far less tendency to snarl and form slugs.
Finally, the cop grip holder 20 with the inserted cop
22 and bobbin plug 23 is quickly and easily inserted or
removed into or from the cavity of the shuttle 10. The
only procedure required is to retract the spring lock 30,
insert the cop grip holder 20, and release the spring lock
î 30, and conversely; retract the spring lock 30, remove the
cop grip holder 20, and release the spring lock 30.
Thus it will become apparent that in carrying out the
objects of this invention I have provided a cop grip holder
and a shuttle in combination for a weaving machine where
by the holder comprises a substantially tubular body
to complete, since the operator need only place the shuttle
open along one side and closable to exert pressure con
10 on a table against a suitable pin, retract the spring
stantly and continuously against a cop of yarn held there
in, and wherein the shuttle comprises a body having sides
defining a cavity formed therein and having a spring lock
slidably disposed in one end of the cavity for locking the
lock 30, place the holder 20 with stops 24 under the stops
13 and press the front end of the holder and the tabs 27
in position in alignment with the notches 29, and release
the shuttle and spring lock.
The cop grip holder 20 is removed from the cavity 11
of the shuttle 10 merely by reversing the above pro
' holder therein. This arrangement of the features of con
struction broadly provides a combination having the ad
vantages set forth hereinabove, and whereby the yarn is
unwound from the outside front of the cop.
cedure.
Many important features and advantages of the inven
One embodiment of the invention having been shown
tion are now apparent. Firstly, the bobbin plug 23 and 50 and described in detail, it is to be understood that modi
the cop 22 of yarn are held securely and positively in posi
ñcations may be made from time to time, and that the
invention is to be construed only as `fairly falls within
tion by the cop grip holder 20 when the holder 20 is
the spirit and scope of the appended claims.
placed in the cavity 11 of the shuttle. This is because the
I claim:
sides 18 of the shuttle gently press against the body of
l. In combination a weaver’s shuttle having sides form
the holder 20 with a constant and even pressure which Ul Ul
ing a cavity, an eye `formed through one side of said
tends to close the edges 25 of the holder together and
thus gently hold the cop of yarn. The bobbin plug 23
shuttle, a spring lock slidably disposed in one end of said
cavity and having an opening formed therethrough notches
is also firmly held by this same pressure, obviating the
in said opening, and a cop grip holder comprising a sub
need for complex latch mechanisms therefor. Thus, as
the yarn 43 is unwound from the cop 22, the individual 60 stantially tubular body having an opening formed along
turns of yarn unwind under the same even tension due to
the above described pressure exerted against the cop 22.
In order to avoid any tendency of backlash as the yarn
43 unwinds, the spring-tensioned yarn tensioner 38 at the
yarn gate 35 also maintains an even and constant pres
sure against the yarn 43 as it moves toward the eye 14
of the shuttle 10. The yarn guide 37 reduces any whip
ping motion of the yarn 43 due to high speed unwinding
one side thereof for gripping a cop of yarn, tabs formed
at one end of said holder in alignment with the said notches
in said spring lock when the holder is securely locked in
position within the cavity, whereby the yarn is unwound
from the outside front of the cop.
2. A cop grip holder for a weaver’s shuttle having a
substantially tubular body open along one side for exert
ing a closing pressure on a cop of yarn therein when said
as the shuttle 10 moves through the loom, not shown.
holder is held in the cavity of a weaver’s shuttle, whereby
Secondly, the cop 22, bobbing plug 23, and cop grip
holder 20 are positively and securely held in position
within the cavity 11 of the shuttle by a simple spring
lock 30 which has only one moving part-the spring lock
30 itself. This feature is important. When the picker
the yarn is unwound from the outside front of the cop,
and a spring lock slidably disposed in one end of said
cavity to lock the holder securely in position within said
cavity.
3. `In combination a weaver’s shuttle and a cop grip
stick of the loom strikes the end of the shuttle 10 to drive 75 holder therefor; said shuttle having a cavity formed there
3,037,530
5
in and a spring lock slidably disposed in one end of said
cavity, notches formed through said spring lock, said
holder having a substantially tubular body open along
one side, -tabs formed at one end of said holder, said holder
being closable to exert pressure against a cop of yarn
held therein when said holder is placed in the cavity of
said shuttle and said tabs are engaged in the notches of
disposed within the said cavity in said shuttle and locked
therein by said spring lock.
5. The combination of a weaver’s shuttle anda cop grip
holder; said holder comprising a substantially tubular
body having an opening formed along one side thereof,
said body being closable about a cop of yarn disposed
therein when said holder is in said shuttle, a cavity Iformed
in said shuttle for receiving said holder, slidable means
said spring lock; whereby the yarn is unwound from the
disposed in one end of said shuttle for engaging one end
outside front of the cop.
4. A weaver’s shuttle and a cop grip holder therefor; 10 of said holder, said means having an opening formed Ithere
through for receiving the yarn from the outside front of
said shuttle having a cavity formed therein and a spring
the cop.
lock with an opening Iformed therethrough slidably dis
posed in said cavity, a tensioned yarn gate inthe front end
References Cited in the file of this patent
of said shuttle and a yarn eye formed through one side of
said shuttle; said cop grip holder having a substantially
UNITED STATES PATENTS
tubular body defining a hollow interior having an opening
1,278,034
Sergeson ______________ __ Sept. 3, 1918
along the side thereof, tabs formed at one `end of said
holder for >being received in the opening in said spring
lock, a cop of yarn being heldin the interior of said holder,
the body of said holder being closable about the cop of 20
yarn to exert pressure thereagainst when said holder is
2,914,095
Simmons _____________ __ Nov. 24, 1959
482,745
Germany _____________ __ Sept. 24, 1929
FOREIGN PATENTS
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