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Патент USA US2106872

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Feb. 1, 1938. '
H. H. HOLMES
2,106,872
CIRCULAR KNITTING MACHINE
Filed Feb; 28, .1923
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2 Sheets-Sheet l
Feb. 1, 1938.
'
H. H. HOLMES
2,106,872
CIRCULAR KNITTING MACHINE
Filed Feb. 28, 1923
2 Sheets-Sheet 2
Patented Feb. 1,1938
‘
2,105,372
UNITED STATES PATENT OFFICE
2,108,872
CIRCULAR KNITTING MACHINE
Henry Harold Holmes, Leicester, England, as
signor, by mesne assignments,‘ to H. Brinton
Co., Philadelphia, Pa., a corporation of Penn
sylvania'
Application February 28, 1928, Serial N0. 257,620
In Great Britain April 1, 1927
8 Claims.
(CI. 66-24)
This invention consists in improvements in or
wise direction of the member, from a transverse
relating to circular knitting machines of the
shouldered portion.
type comprising a set of cylinder needles and a
The dial has associated with it a cam mecha
set of dial needles. An object of the present in- nism. which, when a loop is to be transferred
5 vention is to provide means whereby, after the from the dial needle to a cylinder needle, pro- 5
dial and cylinder needles have been employed in ' jects the transfer-point to enter and engage the
conjunction to produce a ribbed fabric, the stitch- loop, then moves back the needle to enable the
es can be transferred from the dial to the cyl- loop to be pressed o?f therefrom and to be re
inder needles so that plain knitting can be con- talned by the transfer-point and subsequently
l0 tinned on the same machine,
after a cylinder needle has been raised into the 10
The invention accordingly comprises the com- loop which is held by the transfer-point, retracts
bination with a dial needle of standard type of the latter.
a loop-transfer point which is carried in the dial
to slide alongside the needle in a path substan15 tially parallel with that in which the needle
‘
One form of dial mechanism comprises a disc
like cover plate extending over the top of the dial
and formed, as 1701175 under surface. with two 15
moves. Conveniently, the needle and transfer
point are slidingly mounted in the ‘same trick,
tracks, one for the needle butts and the other for
the butts of the transfer-points. In each track
The invention is limited to the use of dial needles
there is a movable cam’ 01‘ Cams to enable the
of standard type, that is to say, to needles that
necessary timed movements to be imparted 130
20 are standard articles for use in knitting ma-
the dial needles and transfer-Points
chines and are thus common articles of commerce at the vpresent time. One such standard
type of needle is the latch needle shown in the
accompanying drawings. The invention is not
25 concerned with needles of special formation differing from those which are now regarded as
the said standard needles of commerce.
A feature of the invention consists in the employment of a latch needle in. conjunction with
30 a transfer-point in the manner above referred to.
In one example of the invention the tricks in
the dial are of such width that in addition to the
usual dial latch needle a transfer-point can also
slide with a needle in each trick. The dial needles
35 are formed with upwardly-projecting butts and
one Preferred example of the invention Will
new be described in detail with the aid of the ac
compenying drawings. in Which
Figure 1 is 8- deVelOped View Of the interior of
the cam-b0! for the needle cylinder;
'
25
Figure 2 is all Under-side Plan View Of the dial
Cam Plate with the ms in the non-knitting
Position;
Figure 3 is a View similar to Figure 2 showing
the Cams in the knitting Position;
30
Figure 4 is a View similar to Figure 2 showing
the cams in the transfer position;
Figure 5 is 8- 1301) plan View‘ of the cam Plate
showing the striking and locking levels;
Figure 5a is a section On the line 511-511 0f 35
the transfer-points are in the form of ?at strips
also having upwardly-extending butts,
Each transfer-point may be formed with a bifurcated outer extremity whereof the bifurca-
‘ 20
Figure 5 showing only relative Positions of the
dial and cylinder needles and an associated trans
fer-Point;
Figure 6 is an under'side plan'view of the dial
40 tions are so formed that they will both lie in a cam Plate with the cams remWed?
40
Figures 7a, 8a, and 9a show details, in plan,
plane that is substantially radial with respect to '
the needle cylinder, and the lower one is slightly of certain of the cams;
downturned and is intended to enter the loop or
stitch on the associated dial needle.
The ex
45 tremity of the transfer-point is conveniently so
curved as to afford a channel into which an ap-
propriate cylinder needle can pass ‘freely when it
Figures 7b, 8b and 9b show views looking from
the right respectively of Figures ‘7a, 8a and 9a,
angigures 10 and 10b are perspective views of 4'5
two di?-erent forms of transfeppoima
Like reference numerals indicate like parts in
is m0ved—as will be explained more fully here50 lnafter-—into the stitch that has been transferred
from a dial needle to the transfer-pointPreferably, the transfer-point is in the form of
a strip-like member capable of sliding in a trick
in the dial and having at its outer end a pointed
the several ?gures of the drawings,
In the example illustrated, the number of 50
needles in the cylinder is double that of the
needles in the dial In order to enable. ribbed
fabric to be knitted, alternate short and long
cylinder needles are employed, as indicated re
55 extension, that projects outwardly in the length—
spectively at I! and II in Figure 1. The long 55
2,106,872
needles are double-butt needles and when it is
desired to produce ribbed knitting, a push-in
cam I2 is moved as shown, into the path of the
lower butts and takes the needles Ii down into
the non-knitting position. In this position the
upper butts of the long needles travel in the idle
track l3 below the usual stitch and other control
cams and remain inoperative. Another push-in
cam i3 will be held outwardly while the needles
10 II are to remain inoperative, and when the cam
is. when the cylinder needles ii are maintained
inoperative, the swing cam 33 is moved outwardly
to the outermost position shown in Figure 3. The
other movable cams 31 and 3i remain, however,
in the position already described with reference
to Figure 2. The needle butts are now guided by
the cam surface 233,Iand the needles are conse
quently projected outwardly sumeiently to clear '
the stitch already made and to take the yarn.
After the needle butts leave the cam surface 233,
they are engaged by the stitch cam 30, and the
stitch is completed by this cam. The direction
of relative rotation between the dial cam plate
and the needles is indicated by the arrow 23 in
cam I3 is moved inwardly to the position shown 7 Figure 2.
in Figure 1 thereby engaging the upper butts, and
It will be appreciated that the transfer-points,
I3 is thus held outwardly it does not engage the
upper butts of the needles II. To return the
latter to the knitting position, the cam i2 is re
moved from the path of the lower butts and the
with the aid. of the lifting cm I! the needles II
are raised to the height of the knitting track i6.
When the needles Ii are in their inoperative
position, their places will be taken by dial nee
dies in a manner well understood, so that a 1:1
rib can be produced.
When a change is to be
during the time that the dial needles are knit
ting, are still maintained inoperative. Generally,
the cylinder and dial needles will commence to
be operative together to knit a length of ribbed
fabric at the top, for instance, of a hose or half
hose, for which purpose the dial cam mecha
made from ribbed to plain knitting, the cylinder - nism will have the movable cams adjusted to the
positions shown in Figure 3. After the required
needles are allraised by the cam M in the man
ner just described and the dial cam mechanism length of ribbed fabric has been knitted, it will
will operate on the dial needles and transfer
points, in succession behind the yarn feed, in
the manner to be described hereinafter.
For the complete understanding of the opera
tion of the dial needles, transfer-points and dial
cam mechanism, reference is now made to Fig
ures 2 to 10.
-
In each needle trick in the dial there is a dial
needle 23 (Figures 3, 4, 5 and 5a) and a trans
fer-point 2i (Figure 101: or 10b).v As seen in
Figure 5a the butts 22 of the needles are higher
than the butts 23 of the transfer-points. The
be necessary to transfer the stitches from the dial
needles to'the cylinder needles, and for this pur
pose, as shown in Figure 4, the swing cam 33 is
moved inwardly; the slide cam 31 is moved to its
outermost position, and the swing cam 3i is also
moved to its outermost position. The cams 31
and 3i are moved simultaneously by means of a
radial slide-bar 33. A stud 231 connects the cam '
31 with the slide-bar 33, and another stud |3l
connects the cam 3i with the slide-bar 33 in such
a‘ manner that the‘ cam can be swung inwardly
and outwardly by a correspondingradial move
latter are in the form of strip-like members. The -ment of the slide-bar 33.
’
outer ends may be bifurcated, as shown in Fig
with the cams in the position illustrated in
40 ure 10b, to afford projections 23 and 23, or, as Figure 4, it will be seen that the needles, after 40
shown in Figure 10a, the projection 23 may be leaving the stitch cam 33, travel round the track
replaced by a shoulder 23. ‘The point of projec
33 until they engage the cam surface 331 of the
tion 23 is intended to enter and hold a stitch cam 31. They are led by that surface to the cam
already formed on its associated dial needle when surface I33 of the cam 33 and by this means the
- it is desired to transfer that stitch to a cylinder
dial needles'are projected outwardly sufiiciently
needle; and in order to permit the ready passage
to clear the stitches, already formed on them.
behind the latches of the needles. Following this,
of the cylinder needle through the stitch so held
on the transfer-point, the extremity of the latter
is bent as shown to afford a groove or channel
50 21 into which the needle can pass and thus enter
centrally through the stitch.
Referring now to Figures 2, 3 and 4, it will be
the needles travel down the reverse surface of
the cam 33 and between that reverse surface and
a ?xed cam 33 so that the needles are drawn 50
rapidly inwards.
Simultaneously, however, the
seen that the dial mechanism includes ?xed cams
transfer-points are projected outwardly by en
gagement of their butts with the swing cam 3i,
33, 3|, 32, 33, 33, 33 and 33, which, together with‘
and as the needles are drawn inwardly, the ex
55 a slide cam 31 and a swing cam 33 aiford a needle
track 33 in which the butts of the dial needles
tremities 23 of the transfer-points enter the loops
of the stitches in succession and retain those
loops. The transfer-points are moved outwardly
to the maximum extent by the cam 3| and at
are received. There is also a central fixed cam
30 and a swing\cam 3i. Between the cams 30
and 3i and the surrounding cams 32 and 33 a 1 their outermost position, substantially that illus
00 track 32 is provided for the butts of the transfer
points.
.
When the slide and swing cams 31 and 38 are
in the position shown in Figure 2, the needle
trated in Figure 4, the cylinder needles Ii, in 60
succession, are raised upwardly so as to enter the
stitches held by the transfer-points, the chan
nels 21 on the transfer-points facilitating the
entry of the cylinder needles into the stitches.
butts are guided by the cam surfaces I31 and I33
65 respectively so that at no position in their pas ' When the stitches have been transferred on to 65
sage around the traek 33 are they moved out
the cylinder needles, the cam 33 retracts the
wardly to take the yarn.‘ The transfer-points transfer-points into the inward position and as
are guided in the track 32 so that they also are soon as the stitches have been transferred from
not projected outwardly at all; the swing cam
3| being in the inward position illustrated in
Figure 2. Thus, the dial needles and transfer
points are inoperative, and they are maintained
in this condition during the time that plain knit
ting is being eifected on the cylinder ‘needles.
76 When the dial needles are required to knit, that
all the dial needles to the corresponding cylinder
needles, the cams 31 and 3i are moved inwardly 70
again to the position illustrated in Figure 2, after
which the dial needles and transfer-points remain
inoperative.
Plain knitting can now be continued on the
cylinder needles during which time, of course,
3
area-e72
the cam II will be held out from the path 01'
the lower butts or the needles II.
It will be understood that, although an ex
ample of the invention has been described for
the purpose of knitting a 1:1 ribbed-fabric, any
desired form of rib can be produced by the proper
arrangement of long and short needles in the
needle cylinder and corresponding needles in the
dial, such arrangements of ‘needles being well
10 understood.
The mechanism by which the movable cams
in the dial are moved outwardly and held in the
positions of outward adjustment is shown in Fig
ure 5. Associated with the swing cam 38 is a
15 striking plate 10 pivotally mounted on the stud
‘H. A stud 12 which is fast in the swing cam 38,
extends through a slot 13 in the cover plate 60
and. also into a slot 14 in the striking plate 10.
A spring 15 pressing on the stud ‘I2 normally
20 tends to hold the swing cam 38 in ‘its inward
position. The swing cam 3! is moved outwardly,
however, by engagement with the tail end of the
striking plate ‘ID (that is, the end on the right of
the stud ‘H as seen in Figure 5), and this may
be effected by any preferred means such as a pro
jection which is moved into the path of the
striking plate ill at required times by a pattern
chain or other controlling mechanism.
In order to hold the striking plate and the
30 swing cam 38 in the outermost position, a locking
lever or plate 75 plvotally mounted on a stud i1
is employed. The locking plate 18 is formed with
a shoulder 18 which passes under and engages
with the nose of the striking plate to when it
35 has been moved outwardly in the manner above
described, and so holds the striking plate in the
position indicated. A spring 19 normally tends
‘ to press the shoulder ‘it towards the striking plate
at all times, and the latter snaps past the corner
40 of the shoulder ‘it into position. In order to
release the striking plate so as to return it and
the swing cam to the inward position, another
projection can be moved into the path of the
outer end of the locking plate ‘58 so as plvotally to
45 move it on the stud ‘W as will be readily under
stood from the drawings.
on the stud TI is a second locking plate Mi
which presents a shoulder 8| to hold the nose
of the striking plate ‘ill at an intermediate posh»
50 tion between the outermost and innermost posi
tions. A spring 82 performs a similar function
with respect to the locking plate 80 as does the
spring ‘59 with respect to the locking plate ‘it.
In this position the swing cam. 38 is held so that
55 the movement oi.’ the dial needles effected by the
cam 38 is such as to form tuck stitches. When
the tail end of the locking plate has been moved
_ to free its shoulder ‘l8 irom the nose of the strik
ing plate W, the latter will move inwardly and
60 will be caught by the shoulder M to hold the
70
striking plate at the intermediate position. Simi
larly, the tail end of the locking plate 80 when it
is required to free its shoulder 81 from the nose
of the striking plate can also be swung aside.
Any preferred mechanism such as is well under
stood in the art may be employed for displacing
the locking plates 16 and 80 to disengage them
from the nose of the striking plate ‘I0.
For the slide 43 there is also a striking plate
83 plvotally mounted on a stud 84, and a locking
plate 85 having a shoulder 86 to engage the nose
of the striking plate 83. Springs 81 and 88 serve
to control the movements of the striking plate
and
locking plate‘ in the same manner that the
75
springs 15 and ‘I! control the striking and locking
plates respectively for the swing cam 38.
In Figure 4, the butts only of the dial needles
and transfer-points are shown in the various
positions around their respective tracks, and in
these butts have been designated with the same
reference numerals as have been employed for
the actual needles and transfer-points shown in
full.
By means of the present invention an inturned 10
welt can be formed for the tops of hose. To form
such a welt with the aid of the mechanism just
described, the following knitting process is em
ployedz-First, two or more courses of ribbed
knitting are produced with the aid of the dial
and cylinder needles. The dial needles are then
retracted to the inoperative position whilst still
retaining their loops.- A number of courses of
plain knitting are then produced using all the
cylinder needles for which purpose the needles,
such as H, previously held inoperative during
the knitting of the ribbed courses, are moved
20
upwardly into position with the aid of the cam ll.
When the required length of plain knitting has
been produced sumcient for the welt, the latter 25
is completed by transferring the loops from the
dial needles to the corresponding cylinder nee
dles with the aid of the transfer-points in the
manner Just described above with reference to
Figure 4. Thus, needles to which the loops have 30
been transferred will have two loops on them,
and these two loops will be knitted together in
the next course of plain knitting.
The invention also includes hose, half-hose and
other fabrics knitted on the machine or with
the aid of the dial transfer mechanism above
described and by the methods set forth. In the
cam-box for the needle cylinder, the usual heel
and-toe stitch cam mechanism, indicated gener
ally by the reference numeral 50, will be provided 40
when it is required to knit hose and half-hose,
but it will be appreciated that the invention can
be applied to any type of circular knitting ma
chine. In the example illustrated, it is intended
that the'cylinder cam-box and the dial cam 45
plate shall be rotated while the needle cylinder
and the dial needle bed 60 remain stationary.
In a manner well understood, however, this can
be reversed and the cylinder and dial beds can
revolve while the cam-boxes remain stationary. 50
The extremities of the transfer-points such as
25, are preferably slightly downtumed as illus
trated, as in this form they are found to enter
the loops more freely because the extreme point
will be somewhat below the level of that surface 55
of the dial needle on, which the loop, at the time
of transfer, is retained.
I claim:
1. For a circular knitting machine, the combi
nation of a needle-cylinder, needles therein, a
needle-dial, needles of standard type in said dial,
loop-transfer points each associated with a dial
needle and slidable in ‘said dial alongside and
independently of its needle in a path substantially
parallel with that of the needle, a cam to move
the transfer points to engage loops on the dial
needles, a dial needle clearing cam to clear loops
on the dial needles, a withdrawal cam for the dial .
needles to move them to yield their cleared loops
to the transfer points, and a cam to raise the
cylinder needles to receive loops from the trans
fer points.
‘
2. For a circular knitting machine, the combi
nation of a needle-cylinder, needles therein, a
needle-dial having needle-tricks formed therein, 75
4
'
9,100,872
needles of standard type in said tricks, loop tr
- loop transfer-points each associated with, and
fer points each slidlngly disposed in the same slidable alongside a needle to which it is allocated,
trick with and alongside a needle to which it is butts _on the needles. and transfer-points, and’
allocated but movable independently of said dial cam mechanism comprising two tracks, one
needle, a cam to move the transfer points to en
for the needle butts and one for the butts of the
gage loops on the dial needles, a dial-needle clear
transfer-points, a cam surface associated with the
ing cam to clear loops on the dial needles, a with
transfer-point track to project the transfer
drawal cam for the dial needles to move them points outwardly to enter loops on their associ
to yield their cleared loops to the transfer points, ated dial-needles, and in the needle track a cam
10 and a cam to raise the cylinder needles to re
surface operable to move the dial-needles inward 10
ceive loops from the transfer points.
ly so as to leave their loops on the associated
3. For a circular knitting machine, the combi-v transfer points, and a third cam surface for the
nation of a needle-cylinder, needles therein, a transfer-point track and operable on the trans
needle dial, needles of standard type therein, and
15 loop transfer points each of which is associated
with and is slidable alongside but independently
of an associated dial needle and has a loop-en
gaging extremity that is formed to pick up a loop
from a dial needle and has a portion oifset‘in av
20 plane transverse to the axis of the needle—cylin
der to afford a channel into which a cylinder
needle can freely pass in order to'enter a loop
held by the transfer point.
4. For a circular knitting machine, a needle
25 dial, needles in said dial, transfer points one for
each needle, each such transfer point being slid
able alongside and independently of its needle
and tricks formed in the dial of sufficient width
to accommodate both a needle and its associated
30 transfer point.
r,
5. For a circular knitting machine, the combi
nation of a needle-cylinder, needles therein, a
needle-dial, needles of standard type in said dial,
loop-transfer points each associated with, and
35 slidable alongside a dial needle to which it is al
located, and dial cam mechanism comprising a
cam surface acting vto project a transfer-point
outwardly to enter a loop on its associated dial
needle, a second cam surface operable to move
40 said associated dial needle inwardly to leave the
loop on the transfer point, and a further cam
surface operable on the transfer-point subse
quently to withdraw it in order to cast oil! the
loop held thereby on to a cylinder needle.
45
6. For a circular knitting machine, the combi-'
nation of a needle-cylinder, needles therein, a
needle-dial, needles of standard type in said dial, ’
fer points submquently to withdraw them to cast
oi! their loops on to cylinder needles.‘
15
7. For a circular hitting machine, the combi
nation ‘of a needle cylinder. a needle dial, needles
of a standard type in said dial, and loop transfer
points each
with and slidable along-I
side a needle to which it is allocated, and dial 20
cam mechanism comprising tracks for dial
needles and transfer-points, movable cam sur
faces constituting portions of both tracks, and a
single movable member operatively connected to
both movable portions so that they are actuated 26
in company to project their associated needles
and transfer-points respectively for a transfer
operation.
'
8. In the operation of a circular knitting ma-.
chine having a needle cylinder with needles there 30
in, a needle dial with needles and ‘transfer-points
therein having the transfer’points each associ
ated with and slidable alongside the dial needle
to which it is allocated, and dial cam mechanism
for actuating the dial needles and transfer-points,
the steps of knitting an inturned welt which com
prise operating the dial and cylinder needles to
form a plurality of courses of ribbed knitting, re
tracting and discontinuing the operation of the
dial needles with loops retained thereon while 40
operating all the cylinder needles to produce the
required length of plain knitting, then operating
the transfer-points to transfer the loops from the
dial needles to corresponding cylinder needles,
and continuing the operation of the cylinder
needles to produce plain knitting. ‘
'
HENRY HAROLD HOLMES.
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