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Jan. 7,1947.
F. J. FORD
‘
2,413,819
KNITTING MACHINE‘
Filed May 25, 1943
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KNITTING MACHINE
Filled May 25, 1945
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Jan. 7, 1947.
F‘. J. FORD
2,413,819
KNITTING MACHINE
Filed May 25, 19,45
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Jan.- 7, 1947.
-
2,413,819
F. J. FORD
KNITTING
MACHINE
v
Filed May 25, 1943
4 Sheets-Sheet 4
-
BY
INVENTOR.
.
Patented Jan. 7, 1947
-
‘2,413,819
UNITED STATES PATENT OFFICE
2,413,819
KNITTING MACHINE
Frank J. Ford, Worcester, Mass, assignor of one
third to Harry Whittaker, Oxford, and one
third to Max B. Striar, Worcester, Mass.
Application May 25, 1943, Serial No. 488,371
3 Claims. (C1. 66-—135)
1
2
This invention relates to improvements in knit
ting machines and methods of knitting,
Objects of the invention include the provision
equally applicable to other types of knitters, and
I do not wish to be limited to the constructions
shown except as recited in the appended claims.
of a, knitting machine having a single row of
The knitting machine here illustrated is sup
needles to which weft threads are fed at inter 5 ported on legs E0 or other base means, these legs
vals, one weft thread being introduced to the
supporting a frame or the like l2 and bracket 14.
needles in series between each rise thereof, in
The latter journals a shaft !6 having fast and
combination with a series of jacks guiding warp
loose pulleys i8, 20, driven by a belt or the like
threads to be knit into a fabric with the weft
2| and shaft 16 extends under the edge of frame
threads, said fabric thereby including weft and 10 [2 and is also journaled therein or in a supporting
warp threads knit in loops, wherein said jacks
leg as at 22. Shaft I6 is provided with a bevel
are provided with means to reciprocate the same
gear 2d intermediate its length and another bevel
in a direction transverse to the needles and the
needle motion, to shift the warp threads from one
gear 23 at its inner end, for the purpose of driv
ing various cam rings, as will be explained.
needle to the next adjacent needle and then to 15
A bracket 28 is mounted on frame l2, adjacent
shift the jacks back to the original needle, where
but above shaft l6, by means of a leg 353. This
by double onset or right and left loops are formed
leg provides a journal for a vertical shaft 32 which
in each Wale together with the chain loops of the
is also journaled in a sleeve 34 forming a part of
wefts.
the bracket. Shaft 32 has a gear 36 fixed thereto
Further objects of the invention include the 20 in mesh with the intermediate gear 24 on shaft
provision of novel power transmissions for a pair
16, and at its other end shaft 32 mounts a gear
of jack cam rings and for the needle cam ring;
38 in mesh with a gear 4!! on a stud shaft 42, the
the provision of novel warp guiding jacks; the
latter being mounted in bracket 28 and a vertical
provision of a novel slide mechanism for recipro
arm 44 thereof. A spur gear 46 is fast to the stud
cating the jacks; and the provision of a new and .. shaft 42 and is rotated therewith from belt 28 as
useful method of knitting.
‘
Other objects and advantages of the invention
will appear hereinafter.
Reference is to be had to the accompanying
drawings in which
Fig. l is a view in elevation of a cylinder knit
ting machine embodying my invention;
above described.
.
Bobbins 48 are mounted on spindles on a large
bobbin ring 50, these bobbins providing the Weft.
or cross threads in the fabric to be manufac
tured. The bobbin ring is toothed on its under
side to mesh with the spur gear 46 and is thus
rotated, carrying with it the bobbins, each of
Fig. 2 is an enlarged detail view of the support
and drive for the weft bobbin ring;
Fig. 3 is a sectional detail view of the drive :
which unwinds as suitable guides not shown,
lead the threads to the needles. The bobbin
ring is arranged to ride on a supporting roller
f or the needle cam ring;
52 mounted at the top of the bracket.
Fig. 4 is an elevational detail view'of the drive
Diametrically across the bobbin ring from the
for the jack cam rings;
mechanism just described, the construction is
Fig. 5 is a section on line 5-—5 of Fig. 4;
repeated in reverse, see Fig. 1. Roller 54 sup
Fig. 6 is a section showing the needle cam ring; #10 ports the bobbin ring which drives spur gear 56
Fig. 7 is a still further enlarged view of the
mounted on bracket 51. In turn, spur gear 55
jack reciprocating mechanism;
drives gears 58, (ill, shaft 62, gear Bil, and a shaft
Fig. 8 is a sectional view of the jack and slide
66 is thereby driven from shaft it, which is here
support;
aligned therewith. A hand wheel 88 is provided
Fig. 9 is a top plan view of the slide support, ~' on shaft 65 but obviously this shaft can be power
looking in the direction of arrow 9 in Fig. 7;
driven also if desired. By this means the bobbin
Fig. 10 is a section on line l0—l0 of Fig. 8;
ring is balanced and rotates easily, any desired
Fig. 11 is a section on line I l-I I of Fig. 7;
means, such as a center shaft being used to
Fig. 12 is a plan view of a jack; and
maintain the ring in central position. Whether
Figs. 13 to 17, inclusive, are diagrammatic views
shaft 6%‘ is driven directly or by the bobbin ring,
illustrating the action of the warp jacks with re-'
it is provided with a gear 70 similar to gear 26
lation to the needles.
.
on shaft I5.
-
~
The present invention is illustrated in the draw
‘.Fig. 3 shows the purpose of gears 26 and it,
ings as applied to a cylindrical knitting ‘machine,
although only the latter is disclosed in relation
but it is to be understood that the invention is 55 to-the needle cam ring 12. The cam ring isv
'
2,413,819
to depress the jack guides, while lowercams 125
toothed to mesh with gears 26 and 10 and is
are shaped to raise the guides. The lower guides
driven thereby in timed relation to the bobbin
are mounted on a lower cam ring lZ'B and alter
ring. A cam is shown at ‘M, the cam slot at 16,
nate with the upper cams in a vertical direction,
and the needles ‘l8 are reciprocably mounted in
see Figs. 1 and '7. The lower cams may be pro
needle slots in the cylinder Bil as usual, and rise
vided with rearward extensions I30 to prevent
and fall in accordance with the speed of rotation
dropping of the guides.
of shafts l6 and 66.
Both upper and lower guide cam rings are
Brackets 82 are supported on frame i2 and in
toothed on their outer peripheries, as shown, to
turn mount a large ?xed cylinder 84 the axis of
which coincides with the axis of rotation of the 10 mesh with spur gears I32, 135 respectively, both
of which are fast to a single shaft I35 journaled
bobbin ring and needle cam ring. This ?xed cyl
in bracket arms l38 on support MB. Another
inder is vertically slotted at close intervals on its
ring M2, also toothed, is mounted on a series of
interior, as at 86, see Figs. '7, 8 and 9. Further
brackets M4, bolted to the needle cam ring 12
brackets 93 conveniently placed on frame l2 sup
port an interior ?xed cylinder 90 exteriorly slotted 15 to rotate therewith, so that the ring M2 is posi
tively driven. A third gear M6 on shaft I36
as at 92 correspondingly to slots 35. Cylinders
meshes with the teeth on ring M2 to drive jack
84 and 9!] are concentric and radially spaced, so
guide cam rings l 2Q, I28 at the same speed. Gears
that each slot 86 faces a slot 92. Inner cylinder
E32 and I 34 are ?anged to aid in supporting the
90 is divided at 94 for a purpose to be described.
guide cam rings.
Brackets 88 rotatively support the lower jack
Gears 2B and ‘H1 rotate the needle cam ring, ring
guide cam ring to be described.
on, shaft 35, and the upper and lower cam
Warp threads $5 are guided to the needles by
rings E28, M3, thus vertically reciprocating the
jacks $38, the threads unwinding from ?xed bob
guides Hi2 and thereby laterally reciprocating the
bins not shown but coming into the machine
through eyes in. a guide ring me in a manner 25 jacks se.
The needle action is conventional and it is
similar to that disclosed in my Patent No. 2,289,
thought that the needle cams need not be further
492, issued July 14, 1942, reference being had to
illustrated. These cams reciprocate the needles
guide ring element 86 therein. Jacks 98 are
in the usual manner, and the needles are raised
novel per se, but the principal novelty resides
and lowered one cycle for each shift of the jacks.
in the motion imparted thereto by sliding jack
Thus, the needles being fed, the jacks operatively
guides I02.
Jack cams or guides Hi2 are all similar and
each comprises a central flat body 5% which is
inclined with relation to end pieces I525, the
latter being parallel but offset due to the in- ;
clined central body I04. In the end pieces ad
jacent the junctions with the body Hill there are
provided pairs of tabs Hi8, Ht, which extend
outwardly forming guiding means ?tting slots 83
and 52, it being observed that the upper tabs “33
are located in slots two removed from the slots
containing lower tabs H0, see Figs. '7 and 9.
Each jack 98 comprises spaced side plates hav
ing spacers I 52 securing the plate together in the
correct relation.
The jacks are assembled one
associated therewith are shifted, say to the left,
to bring the warp threads to certain needles,
whereupon the needles continue their feeding
movement to form the conventional loops in the,
wefts and the warp loops. On the next needle
feed, the jacks are shifted again to original posi
tion and the needles again operate, repeating the
weft loops, but this time the warp loops are
formed on needles to the right of the needles
forming the just prior warp loops, as respects
each warp thread. This action is repeated to
form the fabric with the double oifset right and
left warp loops in combination with the usual
weft loops. The shift of the jacks depends on
the angle of inclination of the jack guide bodies
above described, and the degree of shift deter
mines the needles engaging the ways threads, so
to each jack guide, the latter being contained be
tween two spacers, see Fig. 10, and the jack itself
is located between the pairs of tabs I98, ill].
that by a variation in inclination of the jack cam
The shanks of the jacks extend inwardly ra
guides, a single warp thread may be alternated
dially of the cylinders projecting through the
between adjacent needles, or between needles
inner cylinder at the space 94, and terminating
having a space therebetween, or between needles
in the downturned ?ngers H4 containing guide
spaced by one or more needles. In brief, each
eyes I it to guide the warp 95 to the needles.
warp jack passes its thread from one to another
It will be apparent from the above that the
jacks 93 move laterally and the jack cam guides 55 needle and back again and repeat, and therefore
a fabric having conventional loops, and interen
Hi2 move vertically. The lack guides, being re
gaged double offset warp loops is provided. Figs.
ciprocated vertically in the slots in the ?xed
13 to 17 inclusive show the action of the warp
cylinders 84, 98, will reciprocate the jacks later
jacks with relation to the needles. Fig. 13 illus
ally due to the inclined central bodies IEM which
thereby act as cams for this purpose, and there
60 trates a complete cycle and the needles are shown
in a rising and falling movement as occasioned
by the needle cams. Section A of
13 corre
sponds to Fig. 14 wherein the jacks are station
ary and as to the left hand needle in Fig. 14 the
jacent courses and partially forming two wales 65 latch closes On the warp thread and the weft is
cast off. The right hand needle casts on both
with each warp.
the weft and the warp. Section B of Fig. 13 cor
To vertically reciprocate the jack cam guides
fore each warp thread will be thus passed back
and forth between a pair of needles. This mo
tion of the jacks thus provides a double oifset
loop or right and left loops in each warp in ad
I provide a pair of jack guide cam rings which
rotate about an axis coinciding with that of the
needle cam ring. Upper cams H8 are mounted
to depend from the upper cam ring I29 which is
suspended at diametrically opposite points on
responds to Fig. 15 and shows the needles up and
the jack moved to the right. The left hand needle
has now formed a loop with the warp and the
right hand needle having previously cast off, re—
ceives the warp thread. In this position of the
needles, the latches of course are open. Section
rollers I22 journaled on brackets E24, the latter
A1 of Fig. 13 corresponds to Fig. 16 wherein the
being mounted on brackets 44 and 58. Upper
cams H8 are provided with. inclined surfaces 75 needles are down and the latches are closed, the
2,418,819
5
6
jack remaining in the same position as in Fig. 15.
In this case the left hand needle casts off both
weft and warp and the right hand needle latch
cams in the slots for reciprocable motion therein,
closes on the warp and casts off the weft. Section
B1 of Fig. 13 corresponds to Fig. 17 wherein the
needles are again up with the latches open, and
the warp is fed to the left hand needle. Were
the diagram to be continued to the right, section
A of Fig. 13 and Fig. 14 would be repeated, etc.
further cams to reciprocate the jack cams, jacks
mounted in the ?xed cylinder for movement
therein, said jack cams moving the jacks, and cam
rings rotatable to reciprocate the jack cams, said
last named cam rings having driving connections
from the ?rst named ring.
2. A warp knitting machine comprising a needle
cylinder, a circular series of needles in said cylin
I intend to knit a ?ller into the fabric for 10 der, and needle cam means operatively arranged
blanket cloth, overcoatings, and allied heavier
goods, and I therefore provide guides for laying
therewith, warp thread guiding jacks movable
patent.
cams.
circumferentially of the needle cylinder, means to
reciprocate the jacks, said means comprising a
in such a ?ller in each course. These guides do
cam for each jack, each jack cam being movable
not form a part of the present invention however,
and in fact known devices of this character can 15 relative to its jack to effect the reciprocation
thereof, and further cams for moving the jack
be used, as disclosed in my above identi?ed
Reference is hereby made to my copending ap
3. A warp knitting machine comprising a
sequence of needles in line, cam means for actuat
plication S. N. 402,293, ?led July 14, 1941, Patent
No. 2,346,159, dated April 11, 1944, for illustration 20 ing the needles, warp jacks reciprocable trans
versely of the needles and parallel to the line of
needles, jack cams operatively arranged relative
to the jacks, said jack cams being reciprocable
. advantages thereof, I do not wish to be limited
to impart the reciprocating movement to the
to the details herein disclosed, otherwise than as
set forth in the claims, but what I claim is:
25 jacks, and successive cams for reciprocating the
of the cloth knitted by the present machine.
Having thus described my invention and the
l. A knitting machine comprising a needle
cylinder, a needle cam ring, means to rotate the
ring, a ?xed cylinder, slots in the cylinder, jack
jack cams.
.1
.
FRANK J. FORD.
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