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Патент USA US2410710

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Nov. 5, 1946.
'
‘
F, w, BROWN _
- 2,410,710
KNITTING MACHINE AND METHOD OF KNITTING
Filed May 7, 1945
2 Sheets-Sheet 1
Nov. 5, 1946.
F. w. BROWN
2,410,710
KNITTING MACHINE AND METHOD'OF KNITTING
' Filed May '7, 1945
2 Sheets-Sheet 2'.
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2,410,710
Patented Nov. 5, 1946
rent
UNITED STATE
OFFICE
2,410,710
KNITTING TACHINE AND METHOD OF
KNITTING
Frederick W. Brown, Mount Holly, N. J.
Application May 7, 1945, Serial No. 592,320
(01. 66-63)
7 Claims.
1
er, as explained, is effected by using a knittin
‘My invention relates to knitting machines and
has particular reference to the cam and jack
machine of the type shown in Reissue Patent No.
mechanism.
In the ordinary type of knitting machine
Robaczynski.
20,423
issued
June 22,
1937, to Ladislaus
needle bed. Needles are mounted upon the rice
In the accompanying drawings forming a part
of this application and in which like numerals
are employed to designate like parts throughout
die bed and are operated by jacks. The jacks
the same.
known as links and links, a carriage equipped
‘with a cam construction is reciprocated over a
'
Figure 1 is a plan view, parts in section, of
carriage. The jacks and needles reciprocate in 10 the cam system and needle bed and associated
elements of a knitting machine,
channels formed in the needle bed andthere is
Figure 2 is a transverse section taken on line
a comb at one edge of the needle bed.
2—2 of Figure 1,
During the knitting operation, particularly
‘Figure 3 is a similar view taken on line 3-—3 of
when the needles are casting o? to form a stitch,
the needle upon which the stitch is being formed 15 Figure 1,
Figure 4 is a diagrammatic view of the single
is retracted and the free end of the needle moves
butt and double-butt jacks and associated ele
from the comb teeth of the needle bed, and this
are moved by the cam construction secured to the
ments, and
action forms a new loop upon the needle. The
Figure‘ 5 is a diagrammatic view of a knit
length of the loop depends upon the distance that
the free end of the needle is retracted from the 20 sweater produced by my improved knitting ma
chine.
comb. The longer the formed loop is, the looser
In accordance with my invention, 1 provide a
will be the knitted fabric.
knitting machine comprising a front needle bed
In the knitting of sweaters, it was heretofore
50, having channels ll formed by partitions l2,
the practice to knit the body portion of the
sweater ?at and the tail of the sweater was knit 25 having teeth 13, constituting a comb. The nu
meral l4 designates needles of the double latch
tighter than the remainder of the sweater. It is
type. The needle bed I0 is stationary and is hor
necessary to knit the tail of the body portion of
izontal, and the'needles M are accordingly held
the sweater tighter in order that the sweater will
horizontal and are adapted to be reciprocated
properly ?t the user. It was the practice to knit
within the channels ll. Certain of the needles
a band or border separate from the body of the
M are reciprocated by double-butt jacks l5, slide
sweater and attach the same to the body by sew
able within the channels H,.and the remaining
ing or the like.‘ These bands were employed to
needles I 4 are reciprocated by single-butt jacks
attach buttons to the sweater and to provide but
it. As more clearly shown in Figure 4, there are
tonholes. It has also been the practice to knit
these bands upon the edges of the body portion, 35 two sets of double-butt jacks l5 near the ends
of the needle bed I!) and the single-butt jacks
and following the usual practice of knitting the
it are arranged between the two sets of double
tail of the body portion closer than the remain
butt jacks. The number of double-butt jacks
der of the body portion, the lower ends of the
employed in each set will depend upon the de
bands were knit closer. These bands are em
ployed to attach buttons to the sweater and to 40 sired width of the band to be knit. This num
ber usually varies from eight to sixteen. The
provide buttonholes, as stated. These bands have
number of single-butt jacks It will‘depend upon
proven togbe unsatisfactory inasmuch as the
the width of the body portion to be knit and I
closely knit tails of the bands tend to shrink, curl
may employ two hundred and twenty single-butt
or draw.
'
‘
In accordance with my invention I knit the 45 jacks 16. Figure 4 is diagrammatic and does
not accurately indicate the precise number of
body portion of the sweater and the tail and knit
double-butt or single-butt jacks, and of course
the tail tighter than the body portion, as was the
the number may be widely varied. ‘ Each jack l5
usual practice. The bands are knit upon the
and it serves to reciprocate a needle Ill. The
body portion and tail but the bands are knit
with the same tension throughout their entire 50 needles actuated by the double-butt jacks l5 pro
duce the bands ll, ‘while the needles actuated by
length and may be of the same tension as the
the single-butt jacks it produce the body porbody or looser for a two-ply band. This elimi
nates the objectionable tight knit tail embodied
in the previous bands.
I
-
tion I?- having the tail l9, knit tighter than the
body portion I8. The bands H are knit with the
' The knitting of the body'portio'n of the sweat- 55 same degree of .tension or looseness throughout.
2,410,710
the entire length. These bands may be of the
same degree of tension as the body portion I 8
but when two-ply, they would be knit looser. The
buttons are secured upon one band I‘! and the
buttonhoies formed in the other band.
E'ach double-butt jack i5 has an upstanding
butt 22 and an upstanding auxiliary butt 26’,
while each single-butt jack i6 is provided with
an upstanding butt 2 I. These butts project above
4
their high points 34 moved outwardly further, and
when this is done, the guide cams 36 will be moved
inwardly longitudinally. The stitch cams 29 may
be provided at their outer ends with tails 29’, to
enter recesses 30'. The two longitudinal sets of
cams form a passage 31, which receives the butts
26 of the jacks I5 and the butts 2| of the jacks I6.
The operation of the machine is as follows:
The tension of the yarn upon the needles re
10 tains the butts 2i of the double-butt jacks I6 in
the shanks of the jacks, as shown.
Mounted above the jacks i5 and i6 and the
engagement with the inner edges of the inner set
needle base Iii is a reciprocatory carriage 22,
of cams including the bridge cam 23. The ten
which is moved over the needle bed It through.
sion of the yarn also tends to retain the auxiliary
out the entire length of the same and beyond the
butts 20' of the double-butt jacks in engagement
sets of jacks I5, Figure 4. The usual means is
with the edges of the outer set of cams including
employed ,to reciprocate this carriage which,
the stitch cams 29, until the face 24 of cam 23 is
moves in a horizontal plane parallel with the nee
reached by butts 26, at which time the butts 20'
dle 'bed.
“
will have passed the high point 34 of stitch cam
29 and the butts 26 will then be free to engage the
face 24 of the bridge cam 23, so that edge 24
will then control the action of the double-butt
construction comprisesga bridge cam 23, which ‘ jacks. Assuming that the carriage 22 is at the
is fixedly secured to the lower face of the car
right end of the needle bed I0, Figure 4, and is
riage 22 by any suitable means. This bridge cam
travelling to the left, as indicated by the arrow,
has an inner face 24, for acting upon the ‘butts 25 then the set of double-butt jacks IE to the right
2| of the single-butt jacks I6, and the butts 26
will be ?rst operated in the knitting of the band
of the double-butt jacks I5, for controlling the
I‘! to the right, Figure 5. The auxiliary butt 20’
movement of the several needles in proper timed
will now engage with the outer face of the leading
order. Arranged upon opposite sides of the
guide cam 36 and is brought thereby into engage
bridge cam 23 are stitch cams 25, adjustably se 30 ment with the stitch cam 29 and will engage the
cured to the lower face of the carriage 22. These
high point 34. When in this position the double
stitch cams have high points 26, which deter
butt jack I5_will retract its needle for the entire
mine the maximum retraction of the single-butt
length of its stroke and the yarn pulled back from
jacks I6 but not the maximum retraction of the
the comb, as shown in Figure 3. Figure 2 shows
double-butt jacks l5, Disposed upon the outer 35 the position that the needle has before being re
sides of the stitch cams '26 are guide cams 21 and
tracted by either jack I5 or IE. As the carriage
28,‘ mounted upon the lower face of the carriage
22 continues to travel to the left, each successive
Arranged beneath the carriage 22 and secured
thereto, is my improved cam construction, which
reciprocates the three sets of jacks. This cam
22. The cams 2'! are ordinarily yieldably mount
ed upon the carriage 22 so that they may move
double-butt jack I5 is retracted and as its butt
longitudinally slightly,
moves forwardly so that its butt 26 may engage
the cam face 24 of the bridge cam 23, in proper
The stitch cams 25 con- _
20' passes from the high point 34, the jack again
trol the length of the loops formed in knitting
the body portion of the sweater. The stitch cams
order. The trailing stitch cam 29 engages the
25' .do‘not' retract the .doubleebutt jacks I5 for
auxiliary butt 20' of each jack I5, to the right,
controlling‘ the length of the loops which form
as the carriage 22 continues to move to the left and
the'bands H, but a separate or auxiliary set of 45 the high point 34 of the stitch cam 29 again re
cams is'employed for this purpose.’
tracts each double-butt jack I5 for the maximum
This separate or auxiliary set of cams comprises
distance forming the longer loop inthe band I‘! to
the right and the knitting now occurs. As the
auxiliary stitch cams 29, mounted upon the lower
carriage 22 passes beyond the right group of
face" of the carriage 22. Each stitch cam 29 is
preferably adjustable to Vary the position of its 60 double-butt jacks I5, the butts 2! of the single
high point and forthis purpose it may be pivotally
butt jacks I6 engage the inner faces of the inner
connected at its inner end with the carriage by
group of cams including the stitch cams 25, and
when the high point 26 engages the butt v2|, the
a pin 36 and may have a transverse slot 3 i, to re
jack I6 is retracted to the end of its movement
ceive a set screw '32’ and a transverse slot 32
to receive a pin 33. These screws and pins are 55 and the needle will pull the yarn. When the trail
ing stitch cam 25 has its high point brought into
secured to'the carriage 22 and are flush with the
engagement with each butt 2!, the jack I6 is re
lower face of the cams 29. Each stitch cam 29
tracted and the loop is formed and the knitting
has a high point 3A, which engages the outer or
auxiliary butt 20’ of each bouble-butt jack I5 to
occurs. This formation of the loop is the same as
retract this jack for the maximum distance. The 60 shown in Figure 3, except that the loop will not be
as long as the loop A but about two thirds as long.
inner butt 2%) of this double-butt jack I5 is dis
The knitting is started at the tail end of the
posed upon the inner edge of the stich cam 29
body portion and ?rst produces the tail I9 and the
and will engage with the face~24 of the bridge cam
band I ‘I. The loops pulled by the single-butt jacks
23. The high point 34 determines the maximum
length of the loop pulled in knitting the band l1, 65 I6 in forming the tail l9 are shorter than the
and‘ this loop is longer than the loop pulled by
loops pulled by the double-butt jacks I5 in form
the high point 26 in knitting the body portion of
ing the bands i'i. After the tail I9 is knit the
the sweater;
stitch cams 25 are adjusted so that the high points
‘The numeral 35 designates a center cam ar
26 are higher and the single-butt jacks I6 will
ranged between the inner ends of the stitch cams 70 then pull longer loops in knitting the body portion
29. Disposed upon the outer sides of the stitch
I8. The tension of the tail I9 is greater than the
cams 28 ‘are guide cams 36, which are mounted
tension of the body portion I8. The tension of
upon the carriage 22 and are preferably longi
the body portion I8 may be the same as the ten
tudinally adjustable. The stitch cams 29 are now
slon of the bands I l or the tension of the bands I?
at'th'e minimum adjusted position and may have 75 maybe less than the tension of the bodypQrt-ion
2,410,710
l8. The stitch cams are adjustable to vary the
elevation of their high points 26 and the stitch
cams 29 are adjustable to vary the elevation
of their high points 34, and the action and
adjustment of the stitch cams 29 are independ
ent of the stitch cams 25. The stitchcams 25
are disposed upon opposite sides of the bridge
cam 23 and have no control over the action of
thevjacks when their butts engage the face 24'
like having a, body portion with a tail and side
band, a needle bed, a set of needles mounted
upon the needle bed to knit the body portion
and tail, a second set of needles mounted upon
the needle bed to knit the band, single-butt jacks
toshift the body portion knitting needles, dou
ble-butt jacks to shift the band knitting needles,
each double-butt jack having amain butt and
an auxiliary butt, a ?rst cam structure includ
of the bridge cam, and the same'is true with‘ 10 ing stitch cams arranged to engage the butts of
the single-butt jacks after the needles in the
respect to the stitch cams 29.
.
body portion knitting group have engaged the
When the carriage 22 reaches the set of jacks
yarn, a separate cam structure including stitch
l 5 to the left, these jacks are'operated in the same
cams arranged to engage the auxiliary butts of‘
manner as explained in connection with the jacks
IE to the right. The “carriage now passes out 15 the double-butt jacks after the needles in the
band knitting group have engaged the yarn, the
wardly beyond the left set of jacks l5. Upon its
main butts of the double-butt jacks being adapt
next stroke the carriage returns to the starting
position to the right. While the carriage is trav
ed to engage the ?rst cam structure when the
elling to the right, the high points 34 of the cams
double-butt jacks are released from the control
29 engage the auxiliary butts 20' retracting the 20 of the second cam structure, a carriage move
able with relation to both sets of butts and means
jacks [5, in succession, and the knitting occur
ring when the trailing high point 34 retracts the
to fxedly secure the cam structures to the car
jacks l5. In a similar manner, the high points
riage so that all stitch cams travel in a ?xed
path during the knitting operation'of the ma
26'engage the butts 2| and retract the jacks IS in
succession, the knitting occurring when the trail
ing high points 26 reach the butts 2|. When the
3. In a machine for knitting a sweater or the
like'having a- body portion with a tail and side
carriage reaches the second set of jacks i5 to the
right, these jacks are again retracted in succes
band, means to knit the body portion and tail in
sion by the high points 34 and the same opera
. cluding a set of needles and single-butt jacks,
tion occurs as stated in connection with the jacks 30 means controlling the operation of the single
butt jacks including stitch cams having high
l5 to the left.
'
‘
By virtue of this operation I can knit the bands
points arranged to engage the butts of the single
I‘! integral with the body portion l8 of the sweater
butt jacks after the body portion knitting needles
chine.
.
'
and have these bands of the same tension or loose
have engaged the yarn, means to knit the band
ness throughout their entire length since the 35 including double-butt needles and jacks, each
lengths of the loops in these bands remain the
double-butt jack including a main butt and aux
same, while the tail [9 of the body It! is knitted
iliary butt, and means to controlthe operation
tighter than the body portion, since the'loops in
of the double-butt jacks including stitch cams
the tail are made shorter by adjusting the stitch
having high points arranged to engage the aux
cams 25 to lower their high points.
40 iliary butts after the needles in the band knit
It is to be understood that the form of my in
ting group have engaged the yarn, the high
points of the second named cams being disposed
vention herewith, shown and described is to be
taken as a preferred example of same and that
higher than the high points of the ?rst named
various changes in the shape, size, and arrange
cams, the arrangement being such that the stitch
ment of parts may be resorted to without depart 45 cams for the double-butt jacks retract them for
ing from the spirit of my invention or the scope
a greater distance than the single-butt jacks are
of the subjoined claims.
retracted by their stitch earns, the main butts
Having thus described my invention, what I
of the double-butt jacks co-acting with the con
claim is:
'
trol means of the single-butt jacks when the dou
1. In a machine for knitting a sweater or the 50 ble-butt jacks are freed from control by the con
like having a body portion with a tail and side
trol means of the double-butt jacks and means
band, a. needle bed, a set of needles to knit the
to reciprocate all cams in a ?xed path during the
body portion and tail, a second set of needles to
knitting operation of the machine.
knit the band, single-butt jacks to shift the body
4. In a machine for knitting asweater or the
portion knitting needles, double~butt jacks to 55 like having a body portion with a tail and side
shift the band knitting needles, a ?rst cam struc
bands, means to knit the side bands including
ture arranged to engage the butts of the single
sets of needles and set of double-butt jacks, each
butt jacks after the body portion knitting needles
have engaged the yarn and being adjustable to
double-butt jack having a main butt and an aux
iliary butt, means to knit the body portion and
vary the tension of the body portion and tail, a 60 tail including a set of single-butt jacks arranged
separate cam structure arranged to engage cor
between the sets of double-butt jacks, means to
control the action of the single-butt jacks includ
responding butts of the double-butt jacks after
ing adjustable stitch cams having high points
the needles in the band knitting group have en
arranged to engage the butts of the single-butt
gaged the yarn for regulating the tension of the
band, the other butts of the double-butt jacks 65 jacks after the needles in the body portion knit
ting group have engaged the yarn, means to con
being adapted to engage the ?rst cam structure
trol the action of the double-butt jacks including
when the double-butt jacks are released from the
stitch cams having high points arranged to en
control of the second cam structure, the separate
gage the auxiliary butts after the needles in the
cam structure being permanently arranged in
the path of travel of the said corresponding butts 70 band knitting groups have engaged the yarn, the
main butts being adapted for co-action with the
of the double-butt jacks during the knitting op
control means of the single-butt jacks and means
eration of the machine, and a carriage upon
to reciprocate each cam in a ?xed path during
which the cam structures are mounted and move
the knitting operation of the machine.
able with relation to both sets of butts.
5. In a machine for knitting a sweater or the
2. In a machine for knitting a sweater or the 75
2,410,710‘
7
8
like having a body. portion with a tail and side
the stitch cams being adjustable to vary the
band; means to knit the body portion and tail
position of their high points, the main butts of
including a'set of needles and a 'set of single
the double-butt jacks co-acting with the con
butt jacks; means to knit the band including a
trol means, and a cam structure including stitch
setoof needles and a set of double-butt jacks, each 5 cams having high points arranged to engage the
double-butt jack having a main butt and aux
auxiliary butts after the needles in the band.
ilia'ry butt, means for controlling the action of
knitting group have engaged the yarn, the last
the single-butt jacks including stitch cams hav
named stitch cams being adjustable to vary the
ing'high‘points arranged to engage the butts of
position of their high points ‘and means to recip
the singles-butt jacks after the needles of the body 10 rocate each vcam in a ?xed path during the knit
portion knitting group engage the yarn to re
ting operation of the machine.
'
tract the same, themain butts of the double
T7. The method of knitting a sweater having a
butt jacks co-acting with the control means, and
body portion and tail and side band, comprising
stitch cams having high points arranged to en
advancing a ‘set of needles and engaging the yarn
gage the auxiliary butts after the needles in the. 15 and retracting the needles to form loops in pro
band knitting groups engage the yarn for re
ducing the tail and repeating the cycle of opera
tracting the double-butt jacks independently of
tion for a suitable number of times, advancing
the ?rst named stitch cams and means to recip
the same set of needles to engage the yarn and
rocate each cam in a ?xed path during the knit
retracting the needles for a greater distance
ting operation of the machine.
7
20 for forming longer loops in the body portion and
- 6. In a machine for knitting a sweater or the
repeating the cycle of operation for a suitable
likehaving a body portion and a tail and side
number of times whereby the tail has a greater
band‘, means to knit the body portion and tail
tension than the body portion, advancing an
including a set of needles and set of single-butt
other group of needles and engaging the yarn
jacks, means to knit the band including a set of 25 and retracting such group of ‘needles and repeat
needles and set of double-butt jacks, each dou
ing the cycle of operation for a suitable number
ble-butt ‘jack having a main butt‘ and auxiliary
of times and retracting the needles in each cycle
butt, means for controlling the action of the
of operation for the same distance for forming
single-butt jacks including stitch cams having ,,
high points arranged to engage the butts of the
single-‘butt jacks after the needles in the body
portion knitting group have engaged the yarn,
loops in the side band, whereby all loopsin the
side band have‘ the same length.
FREDERICK \V. BROWN.
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