close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2128915

код для вставки
WEFT REPLENISHING MECHANISM FOR LOOMS
Awevt, ßede?und
A ttor ne);
Sept. 6, 1938.
.
A@ CEDERLUND
2,128,915
WEFT REPLENISHING MECHANISM- FOR LOOMS
Filed March 17, 1957
3 Sheets-Sheet 2
3
u'
“ö
~
‘
,
-
"
, ~
IME'
Í
lrwentov`
Awert,
ßedexmnd
‘btovney
Sept. 6, 1938.
A. CEDERLUND '
_ 2,128,915
WEFT REPLENISHÍNG MECHANISM FOR LOOMS
Filed March 17, 1937
3 Sheets-SheetÍ f5
l?ventor
- Mbe? ßedevmnd,
Aä‘korney
Patented Sept. 6, 1938
UNITE
2,128,9l5
STATES
ears-nr
2,128,915
WEET REPLENISHING MECHANHSMI FÜR
LÜÜMS
Albert Cederlund, Wercester, Mass., assigner to
Crompton & Knowles Loom Works, llsïilorcester,
Mass., a corporation of Massachusetts
Application March 17, 1937, Serial No. 131,430
6 Claims.
This invention rrelates to weft replenishing
mechanisms for looms and it is the general obi
ject of the invention to provide improvements in
means for setting the transfer mechanism.
Ui
In mechanisms of the type to which my in
vention more particularly relates there is em
ployed a magazine holding reserve bobbins and
a transfer mechanism including a transferrer
arm carrying a latch which is moved by a bunter
l0 on the lay when a transfer is to occur. The latch
is ordinarily held in transferring position by
(Cl. 139-~--232)
the front center position of the lay. It is a fur- t
ther object of my prevent invention to cause the
actuator to move out of force transmitting rela
tion with respect to the latch and shuttle feeler
after setting the latter so that said actuator and 5.
its lever may be maintained in transfer position
to hold the magazine correctly while at the same
time permitting either a revocation of the trans
fer or resetting of the transferrer latch.
With these and other objects in view which will
be apparent as the~ description proceeds, my in
mechanism. which is reset at the end of the trans
vention resides in the combination andv arrange
ferring str-oke of the lay, that is, at front cen
ter as set forth hereinafter. It is an important
object of my present invention to provide mech
anism for setting the latch and thereafter break
ing the connection so thatv the latch controller
can be reset independently of the setting mecha
nism. As shown in the drawings the breaking of
ment of parts hereinafter described and set forth.
20 the connections is effected by a movement of one
of the parts of the connection as said part
reaches the end of its setting motion.
It occasionally happens that a shuttle to be re
plenished is not completely boxed, in which case
25 the transfer is revoked by a shuttle feeler while
the lay is still a considerable distance from front
center. It is another object of my present in
vention to provide connections for setting the
latch and shuttle feeler so constructed that the
30 connections will be interrupted after the latch
and Shuttle feeler are fully set for transfer and
before the time for revocation arrives in the for
ward beat of the lay. This result may conven
iently be accomplished by causing cooperation
35 between a part included in the connections and
some other part of the loom. operative to break
the connections as said part of the latter reaches
the end of its setting stroke.
In the form of loom to which my invention
4,0 more particularly relates there is employed a
rocking magazine which shifts its position de
pending upon which weaving shuttle is active.
It is desirable that the magazine retain a selected
position throughout a transferring operation and
this is accomplished by a positioning lever or
similar part which remains in its magazine set
ting position for an appreciable time after the
lay leaves front center' to prevent breakage be
tween the transferrer arm and the magazine. I
v make use of a connection from the magazine po
sitioning lever to set the transfer latch by means
of an actuator or the like which is connected to
the lever. The actuator is therefore required to
remain in transfer position for a period starting
55 some time before and continuing to a point after
In the accompanying drawings, wherein a con
venient embodiment of my invention is set forth,
Fig. 1 is an end yelevation of a loom having my
invention applied thereto, certain parts being in
section,
'
'
Fig. 2 is an enlarged end View of the magazine
taken from the center of the loom, the lay being 20A
shown in section and the magazine set for trans
fer,
Figs. 3, Ll, 5 and 6 are diagrammatic views
showing certain parts of the invention in differ
ent positions.
25I
Referring to Fig. l, the loom frame l0 has a
top crank shaft il and a bottom shaft l2 turn
ing at half the speed of the top shaft. Connec
tors it drive the lay L from the top shaft, the
lay turning about the usual rocker shaft i4 and
having a shuttle box B to receive a shuttle S.
A bunter it on the lay is adapted for engage
ment with a transferrer latch it normally down
as shown in Fig. l. The latch is pivoted as at
il to a transferrer arm it movable about a stud 3.5
i9 and having a hammer 2t toI engage a reserve
bobbin in transfer position.
Except for slight
modification the matter thus far described may
be of `the usual construction found in weft re
plenishing looms.
40.
An electrical weft detector D controls a sole
noid 25 mounted on a normally stationary lever
2S pivoted to a fixed stud 2l. A selector mecha
nism designated generally at 28 is mounted on
lever 25 and is positioned by a rod 29 connected
to a rocking lever 3Q. The latter moves about
a stud 3l mounted on a fixed stand 32 and has
the lower end thereof attached to connections
33 extending to a shuttle box or pattern mecha
50
nism not shown.
A cam S5 is secured to the bottom shaft and
is connected to a regularly acting lever 36 the
forward or left hand end of which as viewed in
Fig. l has a rising motion every second beat of
the loom. A lifting dog 31 is mounted on lever 55
2
2,128,915
36 and acts to lift lever 26 when a transfer is to
should rock at that time.
occur.
enough to hold the magazine against rocking
.
The detector D excites the solenoid 25 through
a battery P and wires 48, 4I and 42. When the
detector indicates weft exhaustion current will
flow through the circuit shown in Fig. 1 to en
ergize the solenoid, the effect of which is to set
the selector mechanism so that a .transfer will
occur upon a subsequent arrival of the shuttle
in the box B.
The forward end of lever 26 is connected to
an upright rod 45 the connections of which will
be described hereinafter, while the rear end of
said lever 25 is adapted for engagement with a
hook 46 extending upwardly to a lever 41 from
which extends forwardly a link 48 connected as
at 49 to a rocking magazine M. The latter rocks
about a fixed axis 58 carried by a bracket 5l
extending from the loom arch 52 to the breast
20 beam 53. The magazine is provided with front
and back reserve bobbin guideways 55 and 56,
respectively, which direct bobbins downwardly
to front and back giveway or support mechanism
51 and 58, respectively. The magazine can be
25 rocked so that one or the other of the low bob
bins in the two stacks will be under the transfer
hammer 28 when the magazine is set for transfer.
The mechanism shown in the lower part of
Fig. l together with the magazine may be sub
30 stantially the same as that shown in co-pending
application ñled by Turner Serial No. 129,245.
Briefly, the magazine will be at rest with the
lowest bobbin of the rear stack under the trans
fer hammer awaiting transfer and this condi
35 tion of rest will continue during shifting of the
shuttle boxes not shown but located on opposite
sides of the loom and cooperating with a plu
rality of weaving shuttles any one of which may
become active for any given number of picks.
If the detector indicates exhaustion in a weav
ing shuttle corresponding to the rear stack the
rod 29 will at that time be in rear position by
action of connections 33 and the ensuing rock
ing of lever 26 in a right hand direction around
45 stud 21 will leave the magazine in its normal
position of rest because of the fact that hook 46
has been moved beyond the range of action of
the rear end of lever 36. Should a transfer
be called from the front stack of the magazine,
however, the hook 46 will remain in the posi
50 tion shown in Fig. 1 and the subsequent rocking
of lever 26 will depress hook 46 and the latter
will act through the mechanism indicated in
Fig. l to rock the magazine in a left hand di
55 rection around stud 58.
The construction of the magazine is such that
it is desirable to have it maintained in its angu
lar position either to the right or to the left
throughout the transferring period. As is usual
60 in weft replenishing mechanisms the transferrer
latch will be engaged by the lay bunter some time
before the lay reachers front center and will re
main in contact with the bunter during back
ward motion of the lay until the transferrer arm
65 has been raised to its normal elevated position.
During the transferring interval, therefore, lever
26 will be held with the forward end thereof up,
the interval extending into the ñrst part of the
backward motion of the lay following transfer.
70 Dwell 59 of the cam 35 acts to maintain the
magazine at rest and rod 45 up throughout the
transferring interval.
A bobbin placing guide
185 assists in holding a bobbin in transfer posi
tion and would interfere with the transferrer arm
75 during the transferring interval if the magazine
The dwell 59 is long
motion during the transferring interval.
My invention relates more particularly to the
mechanism for setting the transfer latch and
shuttle feeler to be described, and also for per
mitting revocation of the transfer and resetting
of the latch and shuttle feeler. In carrying my
invention into effect, I provide the upper end of
rod 45 with a head or actuator 66 the top of 10
which is formed with a hook 6I and a lifting
shoulder 62. The hook is spaced from the
shoulder to deñne an opening 63, while the lower
end of the actuator is formed with a cam sur
face 65 and a dwell surface 66 which in the raised
position of the actuator is substantially concen
tric with stud I9. The transferrer arm has ex
tending laterally therefrom a pin 61 for engage
ment with the cam and dwell surfaces. A small
return lever 68 is pivoted as at 69 to the trans 20
ferrer arm and is urged forwardly by a light
tension spring 10 interposed between the trans
fer arm and said lever 68. The latter has a stud
1| for engagement with the rear substantially
straight surface 12 of the actuator.
The shoulder 62 is normally positioned to have
lifting engagement with a pin 15 carried by a
lever 16 secured to a stub shaft 11 rockable in
bracket 5l. The forward end of lever 16 has
a pin 18 received by a slot 19 in a rod head 80
on the upper end of rod 8| pivoted as at 82
to the latch holder 83. The lever 16 is ñxed
to stub shaft 11 by a set screw 84, and the inner
end of the shaft 11 carries a bell crank lever 85
secured thereto by set screw 13, see Fig. 2, hav
ing a depending arm 14 connected to a rear
wardly extending rod 86 connected as at 81 to a
shuttle feeler 88 pivoting about a ñXed stud 89.
Lever 85 has a rearwardly extending arm 9D
having pivoted thereto as at 9| a spring rod
92 cooperating with a compression spring 93 and
tending to hold the arm 90 either against an
25
30
35
40
upper stop screw 94 or a lower similar stop screw
95.
These stop screws limit the lever 85 and
correspondingly the lever 16, the spring 93 serv
ing as a yielding lock to hold these levers in
either of their extreme positions.
In operation, after an indication of weft ex
45
haustion has been given as already described,
>lever 26 will rock in a right hand direction as 50
viewed in Fig. 1, and rod 45 together with its
actuator 68 will be raised, the actuator starting
from the full line position shown in Fig. 3 and
moving upwardly until the shoulder 62 engages
the pin 15, after which continued rising of the 55
actuator will rock lever 16 in a left hand direc
tion as viewed in Fig. 3 and cause a correspond
ing rocking of lever 85. During the upward mo
tion of the actuator the time will come when
the spring 93 will assume control of lever 85 and 60
rock the same in a right hand direction as viewed
in Fig. 2 to move the shuttle feeler 88 rearwardly
to the position shown in that figure.
Continued upward motion of the actuator 60
will bring the cam surface 65 into engagement
with pin 61 on the transferrer arm, the latter be
ing in its normal raised position at the time and as
said surface engages the pin the actuator will
be moved rearwardly or to the right from the 70
position of Fig. 4 to that of Fig. 5, the pin 61
being at the lower forward end of surface 65.
The opening 63 between the hook and the lifting
shoulder of the head is so placed as to permit
this rearward movement of the head, the pin 15 75
2,128,915
3 ,
passing through the -opening as the parts move
to the position shown in Fig. 5.
During the rocking of shaft 'l1 the rod 8| is
in the aforesaid application of Turner, my in
depressed so that the latch I6 is raised from its
normally down position as shown in full lines in
between the lever 26 and the transfer latch I6.
From the foregoing it will be seen that I have
provided means for setting the transfer latch so
vention being directed tothe parts associated
with the interruption of the operative connections
Fig. 3 to the raised dotted position in Fig. 4,
in which latter position the latch is maintained rconstructed that the chain of connections be
in the path of bunter l5 by action of the spring tween the lever 26 and the latch can be inter
93, as will be apparent from an inspection of rupted at the head 60, the latter moving tempo
Fig. 2. It is to be` remembered that under these rarily out of controlling relation with respect 10
conditions the shuttle feeler is in the rear detect
ing position shown in Fig. 2.
The latch is now set for a transferring opera
tion` and one of two conditions can follow', either
a normal transfer can take place, or the empty
shuttle will fail to be properly boxed and will act
on the shuttle feeler to revoke transfer. Should
a normal transfer ensue the lay bunter will en
gage and move the latchv forwardly to lower the
20 transferrer arm inthe usual manner, the parts
moving to the position shown in Fig. 6 and the
insertion of the incoming bobbin being completed
when the lay reaches front center. During the
latter part of the forward motion of the lay, the
25 lower end of the shuttle feeler will engage the
box back Illû and be rocked forwardly, or to the
right as viewed in Fig. 2, to move lever 85 in a
counter-clockwise
direction,
thereby
rocking
shaft 'il and causing the lever 85 ultimately to
During this rock
30 be positioned by stop» screw 95.
ing of shaft 11 the lever 'l5 will be moved in a
right hand direction back to its normal position
or to the position of Fig. 6. This leaves pin
'l5 a considerable distance below the lifting
shoulder 62, and slot 'i9 accomïnodates the mo
tion of stud '58, the latch being still raised, As
already described rod 45 will be maintained in
raised position during transfer and will therefore
be in the high position shown in Fig. 6 when
40 lever lt returns to its normal position.
During the following rearward movement of
to pin l5. As a result of this interrupted con
nection it is possible to revoke a transfer or reset
the magazine by rocking of lever 85 while the
head is still in raised position, a condition made
necessary by the fact that the magazine rocks. 15
It will further be seen that `raising of the head
@il effects the interruption of the connections,
this interruption being effected upon the completion of the upward motion of the head inde
oendently of movement of the transferrer arm. 20
This latter condition is made possible by the
dwell 66.
Having thus -described by invention it will be
seen that changes and modifications may be
made therein by those skilled in the art without 25
departing from the spirit and scope of the in
vention and I do not wish to be limited to the
details herein disclosed, but what I claim is:
l. In a weft replenishing loom having a lay pro
vided with a bunter, a magazine movable to pre 30
sent any one of a plurality of reserve bobbins in
position for transfer, a transferrer arm which in
normal position is out of interfering relation with
respect to the magazine but which moves into in
terfering relation with respect to the magazine 35
when transferring the reserve bobbin in transfer
position, a member movable at the time of transfer
to move the magazine to place a reserve bobbin
so it can fall to normal position, the cam can act
for transfer, a latch movable from normal posi
tion to transfer position in the path of the bunter, 40
a shuttle feeler to assist in resetting the latch, a
train of mechanism connecting the member to the
shuttle feeler and latch to move the latter to
transfer position and move said shuttle feeler to
shuttle feeling position when said member moves 45
the magazine, said train of mechanism including
to lower the forward end of lever 2B, the trans
two cooperating parts normally positioned to
ferrer arm being now up, as is usual in such mo
transmit a force from the member to said latch
and feeler, and means to move said parts relatively
to each other out of force transmitting relation 50
ship after the latch and feeler have been set for
transfer to render said shuttle feeler capable of
movement independently of said train of mecha
nism during the time that the member is holding
the lay immediately subsequent to transfer, the
latch will follow the lay during the remainder
of the transferring interval and after the bunter
has moved away from the latch, freeing the latter
tions, where it cannot interfere with the maga
50 zine should the latter rock. The resultant down
Ward motion of actuator 60 will move the cam
surface 65 along the underside of pin 61, per
mitting the actuator to have a downward and
forward motion to cause pin ‘l5 to enter the
space S3, thereby returning the actuator to a
position where it can engage pin 'l5 when rising
again. Spring 10 assists in this placing of the
actuator through action of the lever 68.
Should the shuttlev fail to be boxed, after a
60 transfer is called, the front wall lill of the shuttle
the magazine in position for transfer.
sent any one of a plurality of reserve bobbins in
position for transfer and having a part movable
in a given path, a transfer arm which in normal 60
S will engage the shuttle feeler when the parts
position is out of interfering relation with respect
are in the full line position in Fig. 5 and will
move the feeler forwardly a little earlier than
intersecting the path of the magazine when trans
normal, rocking lever 'l5 to the dotted position
65 of Fig. 5.
Under these conditions transfer is
prevented and the transferrer arm therefore re
mains raised with the pin 6l holding the actu
ator 6G rearwardly to permit free motion of the
pin l5 without interference on the part of the
70 lifting shoulder 62. rI‘he parts will remain in this
position until the time arrives for the actuator to
descend, whereupon` the normal conditions will
be reestablished as already described.
The magazine set forth hereinbefore is not a
75 part of my invention but is set forth and claimed
55
2. In a weft replenishing loom having a lay pro
vided with a bunter, a magazine movable to pre
to the magazine but which moves along a path
ferring the reserve bobbin in transfer position, a
transfer latch connected to the transferrer arm 65
and movable from normal position to transfer
position in the path of the bunter to be engaged
with the latter during portions of front and back
motions of the lay, a shuttle feeler connected to
the latch and capable of assisting in resetting 70
said latch, a member connected to the magazine
and movable when a transfer is called to move
the magazine to place a reserve bobbin for trans
fer and hold said magazine in transfer position
during the aforesaid portions of forward and 75
4
2,128,915
backward motions of the lay, a train of mecha
nismconnecting the member to the latch and
feeler to move said latch to transfer position and
and moving with the positioning element and
movable when a transfer is called into position
to be engaged by the lay when the latter moves
tioned for mutual engagement, and means oper
ating before the lay reaches the end of its forward
stroke to move said parts out of engaging rela
10 tionship and render the shuttle feeler capable of
movement by forward motion of the lay to assist
in resetting the latch during the time that the
member maintains the magazine placed for trans
forwardly, an actuator connected to the member
and effective when said member moves to position
the magazine for the transfer to move the posi
tioning element and thereby cause the latch to
move to transfer position and the shuttle feeler
to move into position for engagement with the
lay when the latter moves forwardly, and means
acting subsequently to movement of the latch to
transfer position and movement of the shuttle
feeler to lay engaging position to move said actu
fer and during the time that the transferrer arm
ator relatively to the positioning element and out
moves across the given path of the magazine part.
3. In a weft replenishing loom having a lay pro
vided with a bunter, a magazine movable to pre
latter to render said shuttle feeler capable by
forward motion when in engagement with the lay
' move the shuttle feeler to a positionv for engage
ment with the lay as the latter moves forwardly,
said train including two members normally posi
sent any one of a plurality of reserve bobbins in
position for transfer and having a part movable in
la given path, a transferrer arm which in normal
position is out of interfering relation with respect
to the magazine but which moves along a path
intersecting the path of the magazine when trans
ferring the reserve bobbin in transfer position,
a member movable when a transfer is called to
move the magazine to place a reserve bobbin for
transfer and hold the magazine in such position
during parts of consecutive forward and rear
ward motions of the lay, a transferrer latch con
30 nected to said transferrer arm and movable from
normal position to transfer position in the path
of the bunter, a shuttle feeler connected to and
controlling the latch and movable when a trans
fer is called into position to be engaged and moved
¿by
the lay when the latter moves forwardly to
35
assist in resetting the latch to normal position, a
train of mechanism connecting the member to the
latch and shuttle feeler effective when said mem
ber moves to position the magazine for the trans
fer to move the latch to transfer position and
move the shuttle feeler into position for engage
ment with the lay when the latter moves for
wardly, said train including two parts normally
in force transmitting position with respect to each
451; other, and means acting subsequently to move
ment of the latch to transfer position and move
ment of the shuttle feeler to lay engaging posi
tion to move said parts out of force transmitting
relationship to render the shuttle feeler capable
of force transmitting relation with respect to the
of assisting in a resetting of the positioning ele
ment independently of said member and during
the time that said member is holding the maga 20
zine in transfer position.
5. In a weft replenishing loom having a lay
with a bunter, a latch normally out of the path
of the bunter but movable to transfer position
into the path of the bunter to be operated by
forward motion of the lay, a normally raised
transferrer arm connected to and operated by
motion of the latch, an actuator having a move
ment when a transfer is called, said actuator
having a cam face, means on the transferrer arm
to engage the cam and shift the actuator when
the latter moves, a shuttle feeler to be moved
toward the lay and movable by the latter before
completion of a transferring operation, and
setting mechanism connected to the latch and
shuttle feeler and movable by the actuator pre
paratory to transfer to move the latch into the
path of the bunter and move the shuttle feeler
toward the lay, the transferrer arm being lowered
as the lay advances by engagement of the latch 40
and bunter and said Ámeans shifting the actuator
out of control of the setting mechanism, whereby
the shuttle feeler is movable by the lay while the
bunter and latch are still in engagement.
6. In a weft replenishing loom having a lay 45
provided with a bunter, a latch normally out of
the path of the bunter but movable to transfer
position in said path, a transferrer arm connected
to and operated by said latch when the latter is
~,_; of movement by the lay when the latter moves
forwardly to assist in a resetting of the latch
moved by the bunter, an actuator having an oper 50
ating movement When transfer is called, a shuttle
during the time that the member maintains the
feeler normally out of engagement with the lay
but movable into a position for engagement with
the lay preparatory to transfer, setting mech
anism having an interruptable connection with
the actuator, said setting mechanism connected
to the latch and shuttle feeler and movable by the
actuator by a force transmitted through the in
terruptable connection to move the latch into the
path of the bunter and move the shuttle feeler 60
into position for engagement with the lay, for
ward motion of the lay causing engagement of
the bunter and the latch to operate the trans
magazine in transferring position.
4. In a weft replenishing loom having a lay
, provided with a bunter, a magazine movable to
present any one of a plurality of reserve bobbins
in position for transfer and having a part mov
able in a given path, a transferrer arm which in
normal position is out of interfering relation with
respect to the magazine but which moves along a
path intersecting the path of the magazine when
transferring the reserve bobbin in transfer posi
tion, a member movable when a transfer is called
to move the magazine to place a reserve bobbin
:for transfer and hold the magazine in such posi
tion during parts of consecutive forward and
rearward motions of the lay, a transferrer latch
connected to said transferrer arm, a positioning
element connected to the latch to move the latter
from normal position to transfer position in the
70
path of the bunter, a shuttle feeler connected to
ferrer arm, and means moving with the trans
ferrer arm when the latter operates to interrupt 65
the connection between the setting mechanism
and actuator while the latch and bunter are
engaged, the shuttle feeler being thereby capable
of movement by the lay independently of the
actuator.
70
ALBERT CEDERLUND.
Документ
Категория
Без категории
Просмотров
0
Размер файла
883 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа