close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2391625

код для вставки
Dec. 25, 1945.‘.
H, H, HOLMES _
2,391,625
CIRCULAR KNITTING MACHINE
Filed'Oct. 3, 1944'
2 Sheets-Sheet 1
Dec. 25, 1945..
2,391,625
H. H. HOLMES
CIRCULAR KNITTING MACHINE‘
Filed Oct.- 3, 1944
2 Sheets-Sheet 2
FIG? 2."
3o
4
5. .
w\/ /,. ~
\r§\.E\§
///
/
.//
I,A
A.\\ \ .x
\\\w
\V
..Q\\\\
’
2
J
/
.> / ./ M
_lLJ.
a
VI/l?!‘
~5
.1
737
3,44,)
J .
I
'
'
-
2,391,625
Patented Dec. 25,‘ 1945'
V UNITED ' STATES _ PATENT orrica
‘Henry Harold 1 Holmes, Leicester, England, as
signor to Wildt and Company Limited, Leices
ter, England, a British company
’
Application October 3, 1944, Serial No. 556,955
In Great ‘Britain October 11, 1943
‘ 13 Claims.
(C1. .66-150)
So far as we are aware, no provision has been
This invention relates to circular knitting ma
chines, and concerns more’ particularly, though
‘not exclusively, machines of the characteristic
made for enabling the tensioning member or de
vice to be returned immediately after a press-oil,
and for holding it in- this position until it is fur
type including co-axially superimposed needle cyl
ther required to operate. Accordingly the object
inders and independently slidable double-ended
of the present invention is to enable this to be
needles operable by means of sliders for the pur
done.
pose of producing plain, rib or purl stitches, or '
combinations thereof in any "desired sequence, in _
knitted fabric or articles.
The invention is applicable primarly to ma
nism in which a body with a fabric engaging for
mation is mounted on a vertical supporting rod so
as to‘ enable it to descend when operative to
apply tension to the fabric will now be described
chines adapted, as by rotary reciprocatory knit- '
ting, to produce pouches, such as heel and toe
pouches, in the knitted fabric or articles, followed ,by a course, or courses, composed of or including
stitches knitted by rib needles, as, for example, in
the production of a rib top after a toe pouch in
the manufacture of knitted half-hose, socks and
like articles. Owing to the presence of the pouch
tension is not applied uniformly-to the 'knitted
fabric, all round, by the conventional take-up
mechanism, with the result that loops are liable
with reference to the accompanying drawings,
wherein,
necessary to illustrate the application thereto of
the means provided by theinvention-in a knit
ting machine of the superimposed needle cylinder
‘
sumed, and tucking, or damage to the fabric
‘
Various expedients have heretofore'been pro
posed or adopted for automatically applying ten
sion to the work in conjunction with the conven- ' v ’
tional take-up mechanism, during or after the
formation of a pouch, in order to compensate
for the presence of the pouch and thus equalize
the tension on the work.
As will be understood, '
such an expedient constitutes auxiliary fabric
tensioning means which latter, for the sake of con
venience, will hereinafter be referred to as “pouch
compensating mechanism)’;
The present invention concerns pouch compen
sating mechanisms of the form which include a
member or device mounted on a rod or like sup
porting member suchwise as to be adapted to be'
automatically brought into engagement. with a
pouch, or an immediately following portion of
the knitted fabric, and to move axially of the
needle cylinder or'cylinders for the purpose of
applying the desired auxiliary tension, and to be
automatically returned to the normal or inoperative position after completion of a pouch.
It is found in practice that if a press-off oc
curs while the tensioning ‘member or device is<in
operation, and if knitting is resumed before the
said member or device is returned to the normal
or inoperative position: the resultant courses of
fabric form an obstruction. An endeavour to force
the tensioning member or device past these courses
may result in damage to. if not breakage of,
'
Figure 1 is a side elevational view of so much
.. of the said pouch compensating mechanism as is
to build up on the needles when knitting is re
or/and needles is likely to occur;
'
A particular illustrative embodiment of the in»
vention as applied to pouch compensating mecha
type, and
Figure 2 is a fragmentary vertical sectional
view of a portion of the bottom cylinder com
ponent of the machine, illustrating, by way of
example, one particular form of fabric engaging
body ‘hereinafter to be described.
Like parts are designated by_ similar reference
characters throughout the drawings.
‘
Referring to Figure 1 it will be seen that the
example illustrated is applied to‘a knitting ma
chine of the characteristic type including co
axially superimposed needle cylinders I and 2 fur
nished, as shown in Figure 2, with double-ended
needles 3 operable by means of sliders, such as 4.
The pouch compensating mechanism incorpo
_,_rated in this machine comprises a body 5 which is
provided with a fabric engaging claw 6' and so
mounted on a vertical ‘supporting rod 1 as to‘
enable it to descend, when operative, to apply
tension to the fabric 1 (Figure 2). This rod ex
tends axially right through the needle cylinders i
and 2 and above the top plate 8 of the machine.
For the purpose of the present invention the said
rod is connected by a two-armed lever 9 and a '
link In with another two-armed lever I I arranged
for operation by a timing'or controlling mechanism in ‘the form of a control drum l2. The
lever 9 is 'fulcrumed at l3 in a ?xed bracket l4
supported upon a post l5, and is forked or bi
furcat'e'd at its end remote from the link Hi to
provide spaced portions 9:: which are slotted at
9b for engagement with lateralprojections IS on
an operating collar II. This collar is'located on
the supporting rod ‘I, between a weight‘ l8 and a
check collar IS. A locking screw 20 isprovided
2
2,391,626
for securing the weight upon the rod ‘I. The
check collar 1'9 is ?xed upon the supporting rod
and in this way any movement of the lever 9 is
transmitted to the rod. The lever II is pivoted
at 2| and formed with a nose-like formation Ila 5 '
adapted for engagement with a cam 22 on the
control drum I2. The intermediate connections
just described between the rod 1 and the control
drum are arranged for operation manually so as
my co-pending United States application Serial
No. 543,351, ?led July 3, 1944. Thus, the body 5
comprises a weight with the claw 6 arranged to
engage the work solely on the side where a
pouch is formed, this weight being mounted to
rock or tilt on the rod ‘I whereby it is releasably
supported in engagement with a cam or abut
ment 30 suchwise that the body 5 is maintained"
in an outwardly tilted position indicated in dot
to enable the said rod and consequently the body 10 and-dash lines, so that when released from en
> 5 thereon to be lifted at any stage of the‘descent
of the body. Pivotally connected to the'lever II
is a catch in the form of a'stepped or shoul
gagement with the said cam or abutment, by
reason of downwardsmovement of the rod 1, it
falls to bring the claw 6 into engagement with
dered bar 23, the latter being for engagement ' the work, and, thereafter, is gravity actuated to
with a stop 24 on the bracket I4. The stepped 15 apply the desired auxiliary tension to the work.
or shouldered bar 23 is connected to the lever II
at a point 25 between the pivot 2| and the con
nection between this lever and the link III. The
said bar is also controlled by a tension spring
26, or is otherwise suitably loaded, so that its
stepped or shouldered part 23a is urged towards
the stop 24, but normally this part is located
above the stop _(as indicated in full lines in Fig
The weight is fulcrumed on the rod at 3| and
longitudinally slotted at 5a to enable it to tilt or
rock laterally. A stop bar 32 is provided on the
weight to. limit outward tilting or rocking move
ment.
,
'
The invention is, however, not to be regarded
as limited to application to a pouch compensat
ing mechanism of this particular form as there
ure 1). In the =arra‘ngementso far described
have been proposed, or are in use, other mech
there is therefore an upper lever to which the rod 25 anisms including fabric engaging bodies adapted
1 is connected, a lower lever for operation by the
to operate in particular ways, to which the in
timing mechanism, and, ‘extending vertically be
_ tween these two levers, the stepped or shouldered
vention could be equally well applied.
What I claim then is:
‘
,
bar 23 normally disengaged from the stop 24
1. In a circular knitting machine adapted to
which may also serve as'a guide for the bar. 30 produce pouches in knitted fabric, in combina
Thus the arrangement is such that when the
tion, at least? one needle cylinder, a device for
upper lever 9 is operated manually to lift the‘
applying auxiliary tension to .the work in order to
rod 1 to the position indicated in dot-and-dash
compensate for the presence of a pouch, a mov
lines, assuming that the fabric tensioning body 5
able member for supporting said tensioning de
has descended, the stepped or shouldered bar 23 35 vice, means for automatically operating and con
is pulled down so that its stepped or shouldered
trolling the,said supporting member whereby the
part 23a is brought below the stop 24 whereupon
tensioning device can be automatically brought
the bar is turned by its spring 26 to locate the
into engagement with ,_ the work,'moved axially
stepped or shouldered part under the stop at 240
of the needle cylinder for the purpose of apply
so that reverse movement of the rod is prevented. 40 ing the desired auxiliary tension and automati
The tensioning body 5 therefore is retained in
ally returned to the normal inoperative position
the raised position shown in dot-and-dash lines
after completion of a pouch, said auxiliary fabric
in Figure 2. Accordingly, if, as previously al-. - tensioning means, moreover, being arranged to
luded to herein, a press-off has occurred, the body
enable the tensioning device to be restored to its
5 can be raised, by hand, before fresh courses are 45 normal inoperative position at any stage of its
run on to the needles to initiate knitting again,
operative movement, and means adapted to re
and damage to or breakage of needles will be
.tain the said device in this position and to be
avoided. For the purpose. of releasing the body
operated to release the latter when again required
5 for further operation, means under the control
of machine timing mechanism are provided for 50
automatically tripping the bar 23.
In the par- ‘
ticular arrangement illustrated in Figure 1 such
for use.
.
2. In a circular knitting machine adapted to
produce pouches in knitted fabric, in combina
tion, at least one needle cylinder, a device for
means include a toggle device consisting of a
applying auxiliary tension to the work in order
slotted link 21 connected to the bar 23 and one
to compensate for the presence of a pouch, a
arm of a two-armed lever 28, which latter may 55 movable. member for supporting said tensioning
be any lever serving to operate some other part of
- device, means for automatically operating and v
_ the machine, for example, a heel and toe yarn
controlling the said supporting member whereby
take-up mechanism under suitably timed control.
the tensioning device can be automatically
Instead of providing a two-armed lever such as 28,,
brought into engagement with the work, moved
this may be replaced by another link. In any 60 axially of the needle cylinder for the purpose of
event, to the joint of the toggle is connected a
applying the desired auxiliary tension and au
link 29 in turn connected to or with a lever (not '
tomatically returned to the normal inoperative
position after completion of a pouch, said auxil
whereby when the last mentioned lever is oper
iary fabric tensioning means, moreover, being ar
ated the toggle device functions to move the bar 65 ranged for operation also manually to enable
shown) associated with the timing mechanism,
‘.3 against the spring control thereby, disengaging
the stepped or shouldered part 23a from the
the tensioning device to be restored to its normal
inoperative position at any stage of its operative
guide 24.
movement, an automatically operable retaining
_
‘
The present invention is primarily intended
catch for holding the tensioning device in the
for application to auxiliary fabric tensioning 70 said inoperative position, and machine-con
means or pouch compensating mechanism which,
trolled means for subsequently tripping the said
like the mechanism illustrated in Figure 2, in
catch at an appropriate time to release the ten
cludes a fabric engaging body 5 constructed, ar
sioning device for further operation.
ranged, and adapted to function under gravity or
‘ 3. In a circular knitting machine adapted to
other force, as described inthe speci?cation of‘ 76 produce pouches in knitted fabric, in combina
2,891,625
tion, at least one needle cylinder. a body with a
fabric engaging formation for applying auxiliary
part of the said bar is engageable to prevent re
‘ verse
ovement of the rod and body when lifted
. as afo‘ esaid.
tension to the‘work in order to compensate for
6. In a circular knitting machine adapted to
the presence of a pouch, a rod which supports
said fabric-tensioning body and is movable ax~ an produce pouches in knitted fabric, in combination,
at least one needle cylinder, a body with a fabric
ially of the needle cylinder, a lever to which the
engaging formation for applying auxiliary ten
supporting rod is connected, a second lever, con
sion to the work in order to compensate for .the
trol means for automatically operating said sec-.
presence of a pouch, a rod which supports said
ond lever, a member whereby the said two levers
fabric-tensioning body and is movable axially of
are connected, the arrangement being such that
the needle cylinder, a-ilever to which the support
the tensioning body-can be automatically brought
ing rod is connected, a second lever, control means
into engagement with the work, descend, when
for automatically operating said second lever, a
operative, to apply the desired auxiliary tension
member whereby the said two levers are connect
to the work and be automatically returned to the
normal inoperative position after completion of 15 ed, the arrangement being such that the tension
ing body can be automatically brought intonen
a pouch, and the connections being so arranged
gagement with the, work, descend, when opera
. for operation manually that the rod and the
tive, to apply the desired auxiliary tension to the
body thereon can be lifted at any stage of the
work and be automatically returned to the nor
descent of the latter, a loaded catch connected to
mal
inoperative position after completion of a.
the said second lever, and an adjacent ?xed stop
pouch, and the connections being so- arranged
with which the catch is engageable to prevent
for operation manually that the rod and the body
reverse movement of the rod and body when
thereon can be lifted at any stage of the descent
of the latter, a catch in theform of a spring con
' produce pouches in knitted fabric, in combina 25 trolled shouldered bar which is connected to the
said second lever, an adjacent ?xed stop beneath
tion, at least one needle cylinder, a body with a
lifted as aforesaid.
-
4. In a circular knitting machine adapted to
fabric engaging formation for applying auxiliary
' which the shouldered part of the said bar is en
tension to the work in order to compensate for
the presence of a pouch, a rod which supports
said fabric-tensioning body and is movable axial 30
ly of the needle cylinder, a lever to which the‘
supporting rod is connected, a second lever, con
trol means'for automatically operating said sec
ond lever, a member whereby the said two levers
are connected, the arrangement being such-that 35
the tensioning body can be automatically brought
into engagement with the work,'descend,,when
operative, to apply the desired auxiliary tension
gagea'ble to prevent reverse movement of the rod
.and body when lifted as aforesaid, ‘and machine
controlled means for automatically tripping the
bar and thereby releasing the fabric tensioning
body for further operation. \
.
- '7. In a circular knitting machine adapted to
produce pouches in knitted fabric, in combination,
at least one needle cylinder, a body with 'a fabric
engaging formation for applying auxiliary ten
sion to the work in order to compensate for the
presence of a’pouch, a rod which supports said
fabric-tensioning
body. and is movable axially of
to the work and be automatically returned to
the normal inoperative position after completion 40 @the needle cylinder, .a lever to which the‘support
ing rod is connected, a second lever, control means
of a pouch, and the connections being so ar
ranged for operation manually that the rod and ' for automatically operating said second lever, a
member whereby the said two levers are connect
ed, the arrangement being such that the ten
the descent of the latter, a loaded catch con
nected to the said second lever, an adjacent ?xed 45 sioning body can be automatically brought into
engagement with the work, descend, when opera
stop with which the catch is engageable to pre
tive, to apply the desired auxiliary tension to the
vent reverse movement of the rod and body when
work and be automatically returned to the nor
lifted as aforesaid, and machine-controlled
the body thereon can be lifted at any stage of _
mal inoperative position after completion of a
thereby releasing the fabric tensioning body for 50 pouch, and the connections being so arranged for '
operation manually that the rod and the body
further operation,
'
thereon can be lifted at any stage of the descent
5. In a circular knitting machine adapted to
of the latter, a catch in the form of _a spring
produce pouches in knitted fabric, in combina
controlled shouldered bar which is connected to
tion, at least one needle cylinder, a body with av
fabric engaging formation for applying auxiliary 55 the said second lever, an adjacent ?xed stop be
neath which the'shouldered part of the said bar
tension to the work in order to compensate for
is engageable to prevent reverse movement of the
the presence of a pouch, .a rod which supports
rod and body when lifted as aforesaid, and a tog
said fabric-tensioning body and is movable ax
gle device consisting of a slotted link connected
ially of the needle cylinder, a lever to which the
to
the bar and another member jointed to said
supporting rod is connected, a second lever, ~60' link,
the joint of' the toggle being adapted for '
means for automatically tripping the catch and . '
control meansfor automatically operating said
connection with control means whereby the said
second lever, a member whereby the said two
toggle can be actuated at appropriate times to
levers are connected, the arrangement being such
trip
the bar and thereby effect-automatic release
that the tensioning body can be automatically
brought into engagement with the work, descend, 65 of the fabric tensioning body, for the purpose
~ when operative, to apply the desired auxiliary
described.
-
.
8. In a circular knitting machine adapted to
tension to the work and be automatically‘re
turned to the normal inoperative position after
produce pouches in knitted fabric, in combina
tion, at leastone needle cylinder, a, body with a
completion of a pouch, and the connections being
so arranged for operation manually that the rod 70 fabric‘ engaging formation for applying auxiliary
tension tofthe work in order to compensate for
and the body thereon can be lifted at any stage
the presence of a pouch, a rod which supports.
of the descent of the latter, a catch in the form
said; fabric-tensioning body and is movable ax
of a spring controlled shouldered bar which is
ially of the needle cylinder, a two-armed lever to
connected to the said second lever, and an ad
Jacent ?xed stop beneath which the shouldered
75
which the supporting rod-is connected, 9. second
4-
' '
2,391,025
two-armed lever, control means for automatical
ly operating said second lever, a link connecting
the said twolevers, the arrangement being such
that the tensioning body can be automatically
brought into engagement with the work, descend,
when operative, to apply the desired auxiliary
tension to the work and be automatically returned
to the normal inoperative position after comple
tion of a pouch, and the connections being so ar
ranged for operation manually that the rod and
the body thereon can be lifted at any stage of the
descent of ‘the latter, a catch in the form' of a
shouldered bar which is loaded and connected to
the said second lever between the pivot thereof
and the point of connection between this lever
and the aforesaid link, and an adjacent ?xed stop
normal inoperative position at any stage of its
operative movement, and means adapted to re
tain the said device in this position and to be
operated to release the latter when again re
quired for use.
12. In a'clrcular knitting machine adapted, by _
rotary reciprocatory knitting, to produce pouches
“in knitted fabric, in combination, co-axially su
perimposed needle cylinders, a body with a fab
ric engaging formation for applying auxiliary
tension to the work in order to compensate for
the presence of a pouch, a rod which supports
said fabric-tensioning bodyand is movable axial
ly of the needle cylinders, an upper two-armed
lever to which the supporting rod is connected,
a lower two-armed lever, control means for auto
with which the shouldered part of the bar is en
matically operating said lower lever, a link con
gageable to prevent reverse movement‘of the rod
necting the said two levers, the arrangement
and body when lifted manually.
being such that the tensioning body can be auto
9. In a circular knitting machine adapted to 20 matically brought into engagement with the work,
produce pouches in knitted fabric, in combina
descend, when operative, to apply the desired aux
tion, at least one needle cylinder, a body with a
iliary tension to the work and be automatically
fabric engaging formation for applying auxiliary
returned to the normal inoperative position after‘
tension to the work in order to compensate for
completion of a pouch, and the connections being
the presence of a pouch, a rod which supports said 25 so arranged for operation manually that the rod
fabric-tensioning'body and is movable axially of
and the body thereon can be lifted at any stage
the needle cylinder, a two-armed lever to which ‘ of theadescent of the latter, a catch in the form
the supporting rod is connected, a second two
of a shouldered bar which is loaded, extends'ver
armed lever, control means for automatically op
tically between thev two levers and is connectedv
erating said second lever, a link connecting the .30 to the lower lever between the pivot thereof and
said two levers, the arrangement being such that
the point of connection between this lever and
the tensioning body can be automatically brought
the aforesaid link, an adjacent ?xed stop which
into engagement with the work, descend, when
serves as a guide for the: bar and with which
‘operative, to apply the desired auxiliary tension
the shouldered part of said bar is engageable to
' to the work and be automatically returned to the 35 prevent reverse movement of the rod and body
normal inoperative position after completion of
when lifted manually, and machine-controlled
a pouch, and the connections being so arranged
means’ for automatically tripping‘ the bar’ and
for operation manually that the rod and the body
thereby releasing the fabric tensioning body for
thereon can be'lifted at any stage of the descent
, of the latter, a catch in the form of a shouldered .40
bar which is loaded and connected to the said
second lever between the pivot thereof and the
further operation.
,
13. In a circular knitting machine adapted to
produce pouches‘ in knitted fabric, in combina
tion, at least one needle cylinder, a body com
prising a weight with a claw thereon toengage
the work solely on the side thereof where a pouch
the shouldered part of the bar is engageable to 4-3 is formed for the purpose of applying auxiliary
prevent reverse movement of the rod and body
tension to the work in order to compensate for
point of connection between this lever and the
aforesaid link, an adjacent ?xed stop with which
when lifted manually, and machine-controlled ‘
means for automatically tripping the bar and
thereby releasing the fabric tensioning body for
further operation.
’
,
10. A combination according to claim 5, where
in the fixed stop is provided on an adjacent part
on which, the lever connected to the rod is piv
oted.
the presence of Said pouch, a movable member
for supporting said fabric tensioning body, the
latter being mounted to rock on the said mem
ber, a cam in engagement with which the ten- »
sioning body is releasablysupported by the said
member suchwise that the body is normally main
tained in an outwardly tilted position, means for
automatically operating and controlling the sup
11. In a circular knitting machine adapted, by , porting member whereby the tensioning body can
rotary reciprocatory knitting, to produce pouches be automatically released from engagement with
-in knitted fabric, in combination, co-axially su
the cam so that it will-fall to bring the claw
perimposed needle cylinders, a device for apply
into engagement with the work, then moved ax
ing auxiliary tension to the work in order to com:
ially of the needle cylinder so that the body is
pensate for the presence of a pouch, a movable 60 gravity actuated to apply the desired auxiliary‘
member for supporting said tensioning device,
tension, and thereafter automatically returned
means for automatically operating and control
to the normal inoperative position in engage- ‘
ling the said supporting member whereby the
ment with the cam after completion of a pouch,
said auxiliary fabric tensioning means, moreover,
tensioning device can be automatically brought
into engagement with the work, moved axially
of the needle cylinders for the purpose of apply
ing the desired‘auxiliary tension and automatical
ly returned to the normal inoperative position
after completion of a pouch, said auxiliary fabric
tensioning means, moreover, being arranged to 70
enable the tensioning device to be restored to its
being arrangedto enable the tensioning body to
be restored to its normal inoperative position at
any stage of its operative movement, and means
adapted to retain the said body in this position
and to be operated to release the latter when
again required for use.
,
~
HENRY HAROLD HOLMES.
Документ
Категория
Без категории
Просмотров
0
Размер файла
752 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа