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Патент USA US2110823

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March 8, 1938.
E. SPIERS ET ‘AL
2,110,823
PATTERN MECHANISM FOR KNIT‘IV‘ING MACHINES
Filed Nov. 18, 1936
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March 8, 1938.
E. SPIERS ET AL
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2,110,823
PATTERN MECHANISM FOR KNITTING MACHINES ‘
Filed Nov. 18, 1936v
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Patented Mar. 8, 1938
2,11,823
UNITED STATES
2,110,823
PATTERN MECHANISM FUR KNITTING
MACHINES
Ernest Spiers and John Cyril Herbert Hurd,
Leicester, England, assignors to Wildt and
Company Limited, Leicester, England, a Brit
ish company
Application November 18, 1936, Serial No. 111,500
In Great Britain November 20, 1935
9 Claims. (Cl. 66-14)
This invention relates to pattern mechanism another, say from 1/1 to 2/2. It is becoming in
creasingly the practice in machines of this type
for knitting machines, more particularly for cir
cular knitting machines, and is applicable to to provide pattern mechanism of the type re
pattern controlling variable selecting means com
ferred to for producing a diversity of stitch
e?‘ects such as jacquard, purl designs or fancy 5
prising selector members or elements for selec
tively operating needles, jacks, sliders and/or rib eiiects, tuck effects and others familiar to
those skilled in the art and it is frequently re
other instrumentalities to be controlled for pat
terning purposes, and a pattern controlling unit quired to change from the production of pattern
or fancy effects to rib combinations, especially in
such, for example, as a wheel, drum or cylinder,
machines of the superposed needle cylinder type 1O
10 having pins, pegs, screws, presser elements with
butts thereon, cam bits prearranged therein or adapted to produce knitted garment lengths hav
ing ordinary or fancy rib borders with welts and
thereon in accordance with a predetermined pat
tern or design.
The invention is advantageously applicable to
pattern mechanism of the type concerned where
in the pattern controlling unit acts selectively
upon selector levers or cam members which in
turn act directly upon the needles or other in
strumentalities to be controlled, or upon inter
posed independently slidable or pivoted bits or
equivalent elements. Examples of pattern mech
anism of this character are disclosed respectively
in the speci?cations of British Patents Nos.
267,876 and 282,904. The mechanism disclosed
in speci?cation No. 267,876 includes selector levers
or cam members adapted to act selectively upon
jacks associated with the needles of a circular
knitting machine under the influence of the pat
tern controlling unit, and that disclosed in speci
3O ?cation No. 282,904 includes similar selector
levers or cam members adapted to act selectively,
under the influence of. the pattern controlling
unit, upon bits or equivalent elements arranged
in an obliquely disposed wheel or drum for action
be 5 selectively in turn upon needles or associated
jacks or sliders.
The object of the present invention is to make
provision in connection with pattern mechanism
of the type described whereby changes from one
40 effect to another can be made in a simple manner
during the production of knitted fabric without
necessarily changing the prearrangement or set
out of the aforesaid pattern controlling unit.
The invention may, for example, be adopted for
45 the purpose of changing from one pattern or de
sign to another pattern or design which may be
of an entirely different character. The inven
tion moreover is. of. very practical utility in con—
a patterned body portion, or with ordinary or
fancy rib or plain bands between pattern or de»
sign areas.
The primary purpose of the present
invention is to enable this to be done automati
cally in a very simple manner without disturbing
the conventional pattern mechanism employed
in producing the pattern or design areas, so that
after a period of rib or plain knitting the mech 20
anism can at once resume the production of the
required pattern or design.
According to the invention there is provided,
in association with pattern mechanism of. the
type concerned, an auxiliary controlling unit
which may be adapted to act upon the same
selector members or elements as the main con
trolling unit or on additional selector members
or elements of the same kind so that the effect
produced by the existing unit is varied accord 30
ing to predetermined requirements.
The auxiliary unit may be in all respects simi“
lar to the main controlling unit apart from the
prearrangement of the pins, pegs, screws, presser
elements or cam bits thereon or therein; it may, a I
however, be smaller, more particularly as regards
diameter, than the main unit.
'While the invention is not necessarily limited
in this respect the auxiliary unit is preferably
operated by separate means so that its operation
can be controlled quite independently of the
main unit. It may also occupy a ?xed-position
in relation to the selector members or elements
upon which it is to act, provision being made for
preventing rotatory movement of the unit for as
long as may be required according to the results
to be achieved. In such case the set out or pre
arrangement of the pins, pegs, screws, presser~
nection with circular knitting machines of the
elements or cam bits may be such as to provide a
double axially opposed needle cylinder type
gap or space which when the unit is at rest is
located opposite to the selector members or ele
ments so that the latter are not aiiected.
equipped with double ended needles transferable
from one cylinder to the other by means of sliders
Y for changing the character of the knitting from
plain to rib and vice versa, or for changing the
character of the ribfrom one combination to
In the accompanying drawings,
Figure‘ 1 is an elevational view of so much of
the upper part ofthe machine as is necessary to
2
2,110,823
illustrate the application thereto of the said
pattern mechanism.
Figures 2 and 3 are side elevational and plan
drum or cylinder |3 and has rotatably mounted
thereon a two-armed lever 2| the two arms 2|a
and 2 lb of which extend more or less in opposite
views respectively ofv the pattern mechanism
directions and are separated by a sleeve-like por
per se.
tion 2 la. The lever 2| is supported by the ratchet
Figure 4 is a transverse sectional view taken wheel I‘! and prevented from being displaced ax
ially by means of a cap 22 secured, e. g., by means
on the line IV—IV of Figure 3.
Figure 5 is a sectional view taken on the line of a grub screw, such as 23, to the upper end of
> the spindle or axle | 6. The arm Zla aforesaid
V—V of Figure 3.
Figures 6 and 7 are detail side elevational and extends over the ratchet wheel I1 and carries at
10.
plan views respectively illustrating means which its outer end a pawl 24 for engagement with said
are employed for bluf?ng the driving mechanism wheel. The pawl is controlled by a spring 25
which holds it in contact with the ratchet wheel
of the auxiliary controlling unit.
ll’ and is conveniently mounted on a pivot pin
Figure 8 is a detail view hereinafter to be ex
26 inserted in the arm 2 la. The lever 2| is turned
plained.
Figure 1 is drawn to a smaller scale than the at the appropriate times in the direction indi
cated by the arrow in Figure 3 to impart the op
remainder of the ?gures.
Referring to the drawings, it will be seen that erative strokes to the pawl 24, by means of a two
armed lever 21 which is pivoted on a stud 28 car
the pattern mechanism includes an obliquely dis
ried by the bracket or like support 6 and adapted
20 posed cylinder or drum, such as |, containing in
dependently movable, e. g., pivotal, bits, such as to be operated for the intended purpose by an
2, for action upon needles or associated jacks or arm 29 the movements of which are controlled
sliders (not shown), a correspondingly disposed by cam means suitably associated with the cylin
pattern controlling unit 3 in the form of a drum der bevel gear 9 as hereinafter more fully de
scribed. A spring 30' suitably anchored at one
25 or cylinder and an interposed series of selector
levers 4. As is customary in mechanism of this end to the lever 2| and at the other end to a suit
character the drum or cylinder 3 has prearranged able part of or on the bracket or like support 6
serves to impart the idle strokes to the pawl 24.
therein pins, pegs or screws, such as 5 (see Fig
ures 3 and 5) to operate the selector levers in a As will be seen, the arms 21a and 21b of the lever
21 extend in opposite directions and are formed 30
30 selective manner, these selector levers being
adapted in turn to act upon the movable bits 2. at the opposite ends of a sleeve or boss 210 which
is loosely mounted on the stud 28 and retained
In the speci?c example shown, the obliquely dis
in position thereon, for example by means of a
posed cylinder or drum I and the pattern con
washer 3| and screw 32. The end of the arm 21a
trolling unit 3 are mounted together in a bracket
is adapted to bear on the free end of the arm 2 |a 35
35 or like support, such as 6, secured in any suitable
aforesaid, while the lever 21b is formed with a
manner to the bed plate T of the machine.
Moreover, the drum or cylinder 3 is adapted to be
racked round, 1. e., rotated intermittently by
pawl and ratchet mechanism, such as 8, 8a, which
40 is placed under the control of any suitable timing
mechanism of the machine. Conveniently, and
as shown, the pawl and ratchet mechanism 8, 8a
may be operated by cam means associated with
the cylinder bevel gear 9 and adapted to operate
through intermediate connections such as II], N
boss 21d internally screwthreaded for the recep
tion of a screw 33. As shown in Figure 1, this
screw makes contact with the operative end of
the arm 29 and consequently, when the latter is
rocked forward an operative stroke of the pawl 24
is e?ected. The screw 33 also provides a means
of adjusting the operative strokes of the pawl.
A back stop pawl or the equivalent, such as 34,
is provided to prevent backward rotation of the 45
and I2 (see more particularly Figure 1).
In the practical example of the invention now
being described, the aum'liary unit consists, as
shown more clearly in Figure 4, of a small drum
or cylinder l3 studded with pins or pegs such as
M which are loosely inserted in plain holes |3a
in accordance with the effect to be produced.
The drum or cylinder I3 is surrounded by a cylin
drical casing l5 and is adapted to work on an
obliquely disposed spindle or axle I6 mounted in
the bracket or like support 6. The said spindle
or axle is disposed parallel to the axis of the main
drum or cylinder I3 after it has been racked
pattern controlling unit 3 and is conveniently
consequently effecting the operative strokes of
the pawl 24 to rack round the auxiliary pattern
screw threaded at its lower end so that it can be
screwed into a correspondingly screw-threaded
hole 6a in the bracket 6. The casing |5 serves
to maintain the pins or pegs in position and has
formed therein a plurality of slots |5a arranged
one above the other for a purpose hereinafter
65 speci?ed. If, of course, as they may be, the pins ,
are secured in screw-threaded instead of plain
holes, the cylindrical casing may be dispensed
with. A ratchet wheel I‘! is rigidly attached to
the upper end of the drum or cylinder | 3 by
round by the pawl and ratchet mechanism just
described. In the speci?c example illustrated, the
back stop pawl 34 is pivoted at 35 to a bracket 36 .
of angular form suitably secured to the main 50
bracket 6 by means of bolts 31 (see Figure 3) and
is adapted to engage the ratchet wheel H3. The
pawl 34, moreover, is controlled by means of a
suitably arranged spring 38 and projects into
the casing l5 through a slot |5b appropriately 55
formed therein.
7
The means for rocking the arm 29 forward and
controlling unit i3 will now be described with 60
reference, more particularly, to Figures 6 and 7.
As will be seen, the arm 29 is rigidly secured to
one end of a short spindle 39 which is mounted
to rotate in a bracket 40 conveniently'secured in
any suitable manner to the underside of the bed
plate 7. The other end of the spindle 39 has
an arm 4| non-rotatably mounted thereon, the
arrangement of the arms 29 and 4| being such
that they constitute, in effect, a single bell crank
lever. Mounted loosely on the spindle 39 adja To
cent the arm 4| is another arm 42 furnished at
its outer end with a roller 43 for co-operation
70 means of screws such as I8, while a ratchet wheel
|9 of the same pitch and arranged in the same
way as the wheel I‘! is rigidly attached to the
with a cam or cams, such as 44, formed or pro
other end of the said drum or cylinder by means
of screws such as 20. As will be seen, the spindle vided on the cylinder bevel gear 9 (see Figure 1)
or axle l6 extends beyond the upper end of the the arrangement being such that when the said,
2,110,823
gear rotates, the arm 42 is lifted and allowed to
fall again at predetermined intervals. Means of
any suitable character are provided for connect
ing and disconnecting the arm 4| to and from
the cam-operated arm 42, whereby the movement
of the latter can be transmitted to the arm 29 at
such times as it is required to rack round the
auxiliary controlling unit I 3. Conveniently for
this purpose, and as shown, a spring-controlled
plunger 43 is suitably accommodated in a boss
3
conjoint selections of the appropriate instru
mentalities (such as 2) effected by said units.
If, however, it is desired to effect at the auxiliary
unit a selection of the instrumentalities which
is entirely different from the selection effected at
the main unit, provision must, of course, be made
for neutralizing the effect produced by the main
unit before a re-selection of the instrumentali
ties can be effected by the auxiliary unit. In this
latter connection means may, if desired, be pro 10
4|a formed on the arm 4| and is adapted at the
vided for pushing forward again those bits 2
appropriate times to be forced against the action
which are selected by reason of the operation of
the main unit ‘3. Such means, when provided,
conveniently consists, as shown in Figures 3 and
8, of a nullifying lever 5| pivotally mounted at 52 15
on a bracket 53 secured, for example by means
of screws 54, to a convenient part of the cylinder
of a spring 44 into the path of the cam-operated
arm 42. In Figure 7 the plunger 43 is shown in
~ its projected position in which position it rests on
the top of the arm 42 and thus, in e?ect, connects
the latter with the arm 4|. Thus, when the arms
are so connected and the cam-operated arm 42
rises, the spindle 39 is turned in the direction
indicated by the arrow in Figure 6, and the arm
29is consequently rocked forward to operate the
lever 21. Conversely, when the arm 42 falls, the
arm 29 and the lever 21 return to their normal
inoperative positions. Whenever, after having
been projected, the plunger 43 is released, the
latter is retracted by the spring 44 with the
result that the rising and falling movements of
or‘ drum I.
This lever is formed with a down
wardly projecting part 5|a. adapted when the
lever is suitably moved to act on the rear edges 20
of selected bits 2 and to push these bits forward
to a position such as that indicated more clearly
in Figure 5. ' The lever 5|, which is normally held
in an inoperative position away from the bits 2 by
a tension spring 55, may be operated for the 25
intended purpose, i. e., turned against the action
of its spring, in any suitable manner. Prefer
the arm 42 are then idle and have no effect on
ably, however, the lever carries at the end thereof
the adjacent parts of the mechanism.
remote from the part 5|a. a roller 56 adapted nor
mally to seat in a recess 2|d formed in the free 30
end of the arm Zlb of the lever 2|. Now, as will
be understood, it is necessary for the neutralizing
Any suit
able means may, of course, be provided to effect
projection of the plunger at the appropriate times.
In the speci?c arrangement illustrated, a plate
45 pivotally mounted on a stud 46 depending
from the bracket 40 is employed for this purpose.
Cr The said plate is adapted to act on the end por
tion 43a of the plunger 43 and is moved inwardly
to press the plunger against the action of its
spring by the existing or other suitable timing
mechanism on the machine through intermediate
40 connections, such as 47, 48 (see Figure '7). Thus,
as will be understood, the means just described
not only operate the ratchet mechanism for rack
ing round the unit I3 but also e?ectively blu?s
the said mechanism when required so that rack
ing of the unit can be started and stopped ac
cording to prearrangement depending on the
effect to be produced.
_
Since the ratchet mechanism for racking round
the main pattern controlling unit 3 is operated
from the same gear wheel 9 as is the ratchet
lever 5| to be operated immediately prior to each
racking movement of the drum or cylinder l3.
In order to enable this to be done, the pawl 24 35
is arranged so that in its normal inoperative
position it extends short of the bottom of the
notches between the teeth of the ratchet Wheel |'|.
Consequently, when the lever 2| is operated in
the manner aforesaid, it moves to a slight extent
before imparting to the pawl an actual operative
stroke. During this initial movement of the lever
5|, the roller 55 is caused to ride up the concave
surface of the recess 2 Id with the result that the
said lever is operated, i. e., turned on its pivot
r 52 against the action of the spring 55. After be
ing displaced in this manner, however, the roller
56 is supported on an arcuate-shaped part 2|e
of the arm 2|b and is thus maintained stationary
during the further movement of the lever 2|.
mechanism for driving the auxiliary unit l3, these
When the racking of the auxiliary controlling
two units can readily be driven in timed rela
tion with each other.
The selector levers 4 associated with the main
pattern controlling unit 3 are pivotally mounted
on a pin 49 suitably secured in the bracket or
like support 6 and adapted to act on butts, such
as 2a on the bits 2 aforesaid. A- separate bank
of selector levers 5|! is provided above the levers
4 and arranged so as to be acted upon by the pins
M in the auxiliary drum or‘ cylinder l3. 'I'he
unit is stopped, the neutralizing lever 5| is, of
course, returned by the spring 55 to its inopera
tive position.
When it is desired to produce a particular rib
combination, e. g. 2/2, by means of the auxiliary
pattern controlling unit |3, some of the bits 2
employed in the cylinder or drum I may each
levers 50 are adapted to act on extra butts, such
as 2b provided on the bits 2 above the butts 2a
thereon and are arranged to project through the
slots |5a in the cylindrical casing |5.
Since, in the particular mechanism illustrated,
the bits 2 are pivotally mounted each of the said
bits, when selectively acted upon by one of the
levers 4 or 50, is depressed into the corresponding
70 trick la in the obliquely disposed cylinder or
drum |.
When, in pattern mechanism of the character
so far described, both the main and the auxiliary
vcontrolling units are in operation, the pattern
3175 effects normally produced'are the result of the
be formed with a further e. g., upper, pattern
ing butt, such as 20, said butts being additional 60
to the butts 2b aforesaid and reserved for the
production of such effects. These butts are. acted
upon by a corresponding selector lever, for ex
ample 5911., provided for that purpose and in turn
operated at the appropriate times by a corre
sponding series of pins or pegs, such as l4, suit
ably prearranged in one of the series of holes
I311, e. g. the uppermost series, in accordance
with the rib combination to be produced. If,
for example, in the event of it being desired to
producea 2/2 rib combination, pairs of bits 2
with the butts 20 would be arranged alternately
with pairs of bits without such butts and the said
series of pins or pegs would be prearranged so
as to render the corresponding selector cam op-'
2,110,823
erative at appropriate times, so that the bits with
the butts 2c would be pushed in and rendered
inoperative leaving the other bits operative to
effect transference of corresponding needles to
the opposite cylinder.
.
The speci?c example of the invention herein
described is applied, as shown in Figure l, to a
circular knitting machine of the superposed
needle cylinder type equipped with double ended
10 needles such as 5‘! operated by sliders such as
58 for action selectively on the sliders in the plain
, cylinder 59 either for the purpose of producing
patterns or designs by selective'operation of the
plain needles and changing from one such pat
15 tern or design to another, or for eifecting selec
tive transference of needles to produce fancy
rib and/or purl effects and changing from such
effects to ordinary rib combinations, in the pro
duction of body fabric, garment lengths such as
20 jumpers, pullovers, slipovers, jackets or the like;
the said example may, however, also be applied to
a seamless hose machine of the same type, or to
circular plain machines or circular machines of
the cylinder and dial type.
Pattern mechanism of the type concerned is
especially applicable to rotary cylinder machines,
but is not necessarily limited in this respect.
What we claim then is:-—
1. In a knitting machine, pattern mechanism
30 comprising, in combination, selector members
for effecting selective operation of needles to be
controlled for patterning purposes, a main pat
tern controlling unit having associated there
with elements prearranged in accordance with
a predetermined pattern and adapted to act
uponthe said selector members, an auxiliary pat
tern controlling unit also for action on the se—
lector members and adapted to operate so as to
vary the effect produced by the said main unit
for any of the purposes herein set forth, said
auxiliary controlling unit occupying a ?xed po
sition in relation to the selector members upon
which it is to act, pawl and ratchet mechanism
for intermittently rotating the main unit, simi
“ lar and separate mechanism for rotating the
main unit can be varied for any of the purposes
herein set forth.
3. Pattern mechanism as claimed in claim 2,
wherein the additional selector members and the
corresponding butts on the independently mov
able elements in the drum to be acted upon are
provided above the selector members and butts
corresponding with the main pattern controlling
unit.
4. In a knitting machine pattern mechanism 10
comprising, in combination, a drum, independ
ently movable elements in said drum for effecting
selective operation of needles to be controlled for
patterning purposes, a main pattern controlling
unit having associated therewith elements pre
arranged in accordance with a predetermined
pattern, a series of selector members interposed
between said unit and the drum and adapted to
be acted upon selectively by said unit and in
turn to act on the independently movable ele- -'
ments in the drum, an auxiliary pattern con
trolling unit substantially similar to the main
unit (apart from the prearrangement of the
elements associated therewith), an additional
series of selector members interposed between the
auxiliary unit and the drum, said members being
adapted to be acted upon selectively by the
auxiliary unit and in turn to act on the‘inde
pendently movable elements in the drum, pawl
and ratchet mechanism for rotating the main
controlling unit in an intermittent manner, simi
lar and separate mechanism for intermittently
rotating the auxiliary controlling unit in timed
relation with the main unit, and blu?ing means
associated with the last mentioned mechanism
and adapted to be controlled from the timing
mechanism of the machine so that the intermit
tent rotation of the auxiliary unit can be start
ed and stopped according to prearrangement, the
arrangement being such that the effect produced 40
by the main unit can be varied, for any of the
purposes herein set forth.
5. Patterning mechanism for knitting ma
chines comprising, in combination, an obliquely
disposed drum, independently movable elements 45
auxiliary unit in timed relation with the said
main unit, means for automatically blu?lng the
driving mechanism for the auxiliary unit at re
quired times so that said mechanism is rendered
ineffective for predetermined intervals, and tim
ing mechanism for controlling the. last mentioned
driving mechanism.
2. Pattern mechanism for knitting machines
comprising, in combination, a drum, independ
ently movable elements in said drum for effect
ing selective operation of needles to be controlled
for patterning purposes, said elements having
in said drum for effecting selective operation of
needles to be controlled for patterning purposes,
said elements having two series of butts thereon,
a correspondingly disposed main pattern control
two series of butts thereon, a main pattern con
pendently movable elements in the drum, an aux
iliary patterning unit also mounted on said sup
port and substantially similar in form to the main Cl)
trolling unit having associated therewith ele
60 ments prearranged in accordance with a prede
termined pattern, a series, of selector members
interposed between said unit and the drum and
adapted to be acted upon selectively by said unit
ling unit in the form of a cylinder studded with ('
pins inserted in holes therein, said pins being pre
arranged in accordance with a predetermined
pattern, a support for the main unit, a series of
selector members interposed between said unit
and the obliquely disposed drum and adapted to
be acted upon selectively by said unit and in turn
to act on one of the series of butts on the inde—
unit (apart from the prearrangement of the pins
therein), an additional series of selector members
interposed between the auxiliary unit and the
and in turn to act on one of the series of butts
on the independently movable elements in the
obliquely disposed drum, said members being
drum, an auxiliary pattern controlling unit sub
stantially similar to the main unit (apart from
the prearrangement of the elements associated
therewith), and, interposed between the auxiliary
iliary unit and in turn to act on the other series
of butts on the independently movable elements
70 unit and the drum, an additional series of se
lector members adapted to be acted upon selec
adapted to be acted upon selectively by the aux
in the drum, so that the effect produced by the
main unit can be varied for any of the purposes
herein set forth, pawl and ratchet mechanism 70
tively by the auxiliary unit and in turn to act
for rotating the main controlling unit in an in
termittent manner, similar and separate mech
on the other series of butts on the independent—
anism for intermittently rotating the auxiliary
ly movable elements in the drum, the arrange
75 ment being such that the effect produced by the
unit, and bluf?ng means associated with the last
controlling unit in timed relation with the main
2,1 10,823
5
mentioned mechanism and adapted to be con
movable elements in the drum, for the purposes
trolled in such a way as to start and stop the ro~
herein described.
8. Pattern mechanism for knitting machines
comprising, in combination, a rotary drum adapt
tation of the auxiliary unit according to prear
rangement.
6. Pattern mechanism for knitting machines
ed to be mounted eccentrically with respect to the
comprising, in combination, a drum, independ
ently movable elements in said drum for effecting
needle circle, independently movable elements in
said drum for effecting selective operation of
selective operation of needles to be controlled for
patterning purposes, a main pattern controlling
10 unit having associated therewith elements pre
arranged in accordance with a predetermined
pattern, a series of selector members interposed
between said unit and the drum and adapted to be
needles to be controlled for patterning purposes,
a main pattern controlling unit having associated
therewith elements prearranged in accordance 10
with a predetermined pattern, a series of selector
acted upon selectively by said unit and in turn
15 to act on predetermined independently movable
elements in the drum, an auxiliary pattern con
trolling unit substantially similar to the main
unit (apart from the prearrangement of the ele
ments associated therewith), an additional series
20 of selector members interposed between the aux
iliary unit and the drum and adapted to be acted
upon selectively by the said auxiliary unit and in
turn to act on predetermined independently mov
independently movable elements, in said drum,
and an auxiliary pattern controlling unit adapted
able elements in the drum, and means for moving
25 at the appropriate times those independently
movable elements selected by the main unit so
that an entirely fresh selection of the said ele
ments can be effected by the auxiliary control
ling unit, all for the purposes herein set forth.
7. Pattern mechanism for knitting machines
comprising, in combination, a rotary drum adapt
ed to be mounted eccentrically with respect to the
needle circle, independently movable elements in
said drum for effecting selective operation of
needles to be controlled for patterning purposes,
a main pattern controlling unit having associated
therewith elements prearranged in accordance
with a predetermined pattern, said main unit be
ing adapted to effect selective operation of the in
40 dependently movable elements in said drum, and
an auxiliary pattern controlling unit also adapted
30
to effect selective operation of the independently
members adapted to be acted upon selectively by
said unit and in turn to act selectively upon the
to act selectively upon the same selector members
as the main unit, for the purposes herein de
scribed.
9. Pattern mechanism for knitting machines
comprising, in combination, a rotary drum 20
adapted to be mounted eccentrically with respect
to the needle circle, independently movable ele
ments in said drum for effecting selective opera
tion of needles to be controlled for patterning
purposes, a main pattern controlling unit having 25
associated therewith elements prearranged in
accordance with a predetermined pattern, a series
of selector members interposed between said unit
and the drum and adapted to be acted upon
selectively by said unit and in turn to act on 30
predetermined independently movable elements
in the drum, an auxiliary pattern controlling
unit, and, interposed between the auxiliary unit
and the drum, an additional series of selector
members adapted to be acted upon selectively 85
by the auxiliary unit and in turn to act on prede
termined independently movable elements in the
drum, the arrangement being such that the eiTect
produced by the main unit can be varied, for
any of the purposes herein set forth.
ERNEST SPIERS.
JOHN CYRIL HERBERT HURD.
40
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