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Патент USA US2411422

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Nov. 19, 1946.
Filed Sept. 29, 1942
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Patented Nov. 19, 1946
Ivan W. Grothey, Laconia, N. H., assignor to
Scott & Williams, Incorporated, Laconia, N. H.,
a corporation of Massachusetts
Application September 29, 1942, Serial No. 460,048
38 Claims.
(Cl. 66-135) '
This invention relates to a knitting method
and machine, and particularly to the construc
tion and operation of a circular knitting machine
having independent needles.
It is one object of the present invention to pro
vide means for wrapping needles for the pro
duction of embroidery designs involving shog
tion to provide a simple controlling arrangement
for overcoming such limitation.
While various features of the invention
not limited thereto, it is a further object of
invention to provide for wrapping, and also
reverse plating, in a machine of automatic
top type provided with dial needles to cooperate
ging of wrap yarn carriers through substantial
with cylinder needles. As will be obvious here
angular ranges with respect to the needles. In
after, various devices functioning in connection
particular, it is the object of the invention to 10 with the ‘production of reverse plating have addi
provide independent shogging movements for a
tional functions in connection with the matter of
plurality of groups of wrap yarn carrying ?n
knitting by dial needles, these dual functions of
gers. In the following description, the machine
certain elements resulting in a simpli?cation to
is disclosed as comprising two such groups ar
a substantial degree of mechanism capable of
ranged to be independently shogged, but it will 15 performing satisfactorily the various separate
be obvious that the principles of the invention
are readily, applicable to the shogging of addi
Another object of the invention is the provi
tional groups of wrap yarn carriers.
sion of means for backing up cylinder needles
A further object of the invention is concerned
with the selection of yarn‘ carriers to provide
color changes in wrap patterns.
The selection mechanism is particularly de
signed to effect selection of at least some of the
during rib knitting to impart .to them a substan
tial rigidity against inward de?ection of their
upper ends under the tension of stitches. The
invention contemplates the simple effecting of
this result by special manipulation of cleaning
jacks of a type heretofore used.
wrap yarn carriers or lingers in such fashion that
the operating movements of the selecting means
take place in timed relationship with the wrap
yarn ?ngers rather than at some de?nite phase
of rotation of the needle cylinder even though
the pattern devices comprising, for example, a
trick wheel or drum, may have movement im
parted to it at a particular phase of the cycle of
the needle cylinder, at which time it may directly
effect other selection, for example of needles.
The invention has as still another object the
provision of means for properly placing wrap
yarns in position to be engaged by needles for the
purpose of wrapping them. While the placing
means referred to is of more general applica
tion, it is particularly desirable in a machine
embodying other features of the present inven
tion in order to insure the proper seizure of
. Another object of the invention is the provi
sion of means for lining up the hooks of the nee
dles during the transfer of loops from dial nee
dles to cylinder needles. Heretofore this has
been accomplished by engagement of a cam with‘
30 the hooks of needles in such fashion as to create
a substantial possibility of damage to the needles.
In accordance with the present invention, the
alignment of the needles is effected by elements
which are conventionally those utilized for the
deflection of the needles in the production of
reverse plating.
The invention comprises additionally the
various manipulative methods involved in ac
complishing the above objects.
The foregoing objects of the invention, to
gether with other objects, particularly relating to
details of construction and operation, will be
come clear from the following description, read
wrap yarns by the needles in knitting involving
extreme shogging movements of the type indi
cated above.
in conjunction with the accompanying draw
A further object of the invention is the provi 45 ings, in which:
sions of means for effecting selection of needles
for wrapping and also for de?ection for the pur
pose of reverse plating, as speci?cally disclosed,
Figure 1 is a vertical section through the por
tion of a knitting machine in the vicinity of the
upper end of the needle cylinder, the dial, and
or for some other purpose, as for the production
of patterns by the creation of selective ?oats. As 50 the wrap yarn carrying and shogging means, il
lustrating certain features of the invention;
will be evident from the following description,
Figure 2 is an interior diagrammatic develop
the mechanism is greatly simpli?ed in spite of
ment of the cams for controlling the needles and
the performance of very elaborate functions by
wrap ?ngers and their associated parts, together
an interrelationship of the selections of needles
for wrapping and for reverse plating or the like. 55 with certain additional elements such as yarn
feeding elements and wrap yarn. controlling
As will be evident hereafter, the interrelated
controls for the production of wrapping and re
Figures 3, 4, 5 and 6 are, respectively, ‘vertical
verse plating impose some minor limitations upon
sections taken through one side of the needle
the freedom of production of certain elaborate
patterns, and it is a further object of the inven 60 cylinder and its adjacent associated parts at the
respective axial planes indicated in Figure 2
at" 3-3, ll—-ll, 5-5 and 6-—6;
_ ,
Figure 7 is a plan view, partly in section, show~
ing a portion of the shogging controlling means;
Figure 3 is an elevation of the same, partially in
plete stocking including a rib top, the machine_
illustrated being basically of the Scott and.
Williams rotary cylinder type. The rotary needle
cylinderv of substantially conventional form and
mounting is illustrated at 2 and is provided with.
axially extending slots within which needles and
Figure 9 is a fragmentary sectional View show
ing the relationship between a selecting trick
various elements'associated therewith are slid
ably mounted. These elements, as will appear
wheel and a selecting device for controlling the - ‘
most ‘clearly from Figures 3 to 6, include pattern
jacks 4 ‘provided at their lower ends with upper
and‘ lower‘ steps or‘ shoulders, respectively indi- '_
shogging of the wrap ?nger‘ carriers;
Figure 10 is a fragmentary elevation, with a
cover plate partially broken away, looking toward
the right in Figure 9;
Figure 11 is a perspective View showing one
arrangement of wrap yarn carriers and their
supporting’ and selecting elements;
Figure 12 is a perspective view showing the
controlling means for one of the wrap ?nger
selecting cams;
Figure 13 is a perspectiveview showing’ another
of the wrap yarn selecting cams and its operating
cated at 6 and 8, there being a butt '7 provided
above the upper step 6. Each jack is provided
with a series of selectively removable butts Ii!
and carries intermediate and upper butts l2 and
13, respectively.
Above each pattern’ jack there is located a
cleaning jack i4 provided with a butt it‘ located
between the upper end of the corresponding
pattern jack and the butt‘ 29 of a needle jack It,
which is located outside the cleaning jack. In
each slot above the intermediate or needle jack
Figure 14‘ is a vertical sectional View through
l8 and also outside the cleaning jack it, there
is a needle 22, these needles being provided with
conventional long and. short butts or with other
Figure 15' is a fragmentary plan'view', partlj,7
suitable arrangement ofibutts in the event that
in section, showing in particular the mechanism
special split foot or other products are to be
for effecting- selection of the wrap ?ngers; '
provided, in which case, for example, suture
Figure 16 is an elevation of certain elements
needles may be provided-with intermediate length
of the‘ machine concerned with the selection of
the‘ wrap ?ngers, the view being taken looking 30 butts. Outside of the needles there are located
press‘er jacks 2'5 provided with butts 26 of four
toward the left at the subject-matter of Figure 15;
different lengths and arranged to be acted upon
Figure 17 isv a fragmentary view of certain ele
by pressers 28' slidably mounted for radial move
ments of the machine’ looking toward the right
ment in, the lower part of the sinker dial 29.
at the subject-matter of Figure 15‘;
are supported by the sinker dial. 29
Figures 18, 19 and 20 are perspective views 35 Sinker-s
and the inside sinker ring 33 (see Fig. 1), being
showing successive stages of the cooperation of a
provided with butts 32 in the usual fashion and
yarn placer with a wrap ya-rn carrying ?nger;
arranged to be acted upon, by cams carried. by
Figure 21 is a View of the yarn placing elements
the sinker cap 3| .
of Figures 18, 19 and 20; looking in the direction
For the formation of rib tops, thereis provided
of the axis of movement thereof;
certain of the elements of Figure 13;
Figure-22 is a section‘taken' on the plane indi
cated at 22-—22 in Figure 21;
Figure 23 is" a perspective‘ View showing in
particular the devices whereby cylinder needles
are aligned for the transfer of loops from dial
needles to cylinder needles;
Figure24a is'a fragmentary sectional view show
ing the7 relationship of a controlling ,cam to a
slider not adapted to be acted upon by said cam;
a needle dial 311‘ mounted upon the lower end of
a vertical shaft 36", which is arranged to be ro
tated by’ suitable ge'aringin conventional fashion
at the same speed‘ and inde?nite relation to the
needle cylinder, this shaft being vertically mov
able as usual to adjust the relationship between
the needle dial and the. needle cylinder. Two
partdial needles of conventional form, indicated
at. 38 and fill, are mounted‘ in slots in the dial and
‘ Figure 25' is a perspective View showing the 60 are‘provided withibutts to be acted upon by con
ventional cams carried by the dial cap‘ 42, which
controlling means for a cam arranged to operate
selectively upon the butts of presser jacks;
is: secured to a stationary sleeve ‘34.
From the
' Figure 26 is a diagram illustrating in particular
standpoint of its functions, the dial mechanism
the fashion in which patterns may be formed by
the shogging- actions in the machine;
Figure 27/ is a diagram illustrating the fashion
in which selection of needles for wrapping and
is‘ substantially the same as that disclosed in
Scott Patent 1,641,101, and the sinkers are‘ of the
types and arranged, as set forth therein to co
operate in the formation of the stockingtop.
The stationary s-leeve- grill- extends upwardly
through a second stationary sleeve lit‘ which, at
certain selections under conditions wherein the 60 its lower end, is, provided with, disc @3- serving
as an inner abutment for certain wrap ?ngers
primary selecting means is insu?icient for the
which’ will be referred‘ to hereafter. A rotating
sleeve 46 mounted in a bearing at Ail has secured
Figure 23 is a fragmentary perspective view
to it a plate 58 which is arranged to carry the
illustrating a modi?cation corresponding gener
ally to that of Figure 11, but su?icing for simpler 65 bobbins and tension and take-up mechanisms
supplying wrap yarn to the wrap ?ngers through
control of the wrap ?ngers in certain instances;
individual tubes 52. See, for example, my Pat
Figure 29 is a perspective view somewhat similar
reverse plating is effected, as well as the fashion
in which an auxiliary device operates to secure
to Figure 13 but showing the control of a cam
ent 2,053,192, dated September 1, 1936.
A. stationarycasting 54-, secured to the usual
Figures 30, 31 and 32 are diagrammatic views 70 tilting head which supports the dial mechanism
and; in the present machine, the wrap yarn sup
of portions of stockings made by the use of the
plying devices, provides an inwardly directed
mechanism illustrated and showing the types of
flange on which arev rotatably mounted two, rings
patterns producible thereby.
58 and ‘69 adapted to carry wrap ?ngers, these
The invention is illustrated as applied to a
circular knitting machine for knitting a corn 75 ,rings'being provided with gear teeth. 62 and 64
of the modi?cation of Figure 28; and
and being held assembled upon the ?ange of the
casting 54 by means of clip members 56. The
rings 58 and 66 are provided with perforations,
through bevel gear I 36 to a horizontal shaft I 38
carrying an actuating arm I 48. In similar fash
ion, the pin I24 is connected by links I42 to a
as indicated in Figures 1, 11 and 12 for the re
yoke E44 secured to pin I46, which is connected
ception of screws adapted to hold within the CI through bevel gearing I48 to the shaft I58 car
rings brackets 66 and 14. The bracket 66 is ar
rying horizontally extending arm I52. Springs
ranged to carry upon a pivot pin 68 a pair of wrap
I54 and I55 are connected between the upper ends
?ngers 19 the lower ends of which are urged in
and between the lower ends of the yokes, respec
wardly by springs 12 into contact with the disc
tively, and are arranged to urge them toward each
48 previously referred to. The bracket 14' simi 10 other.
larly carries upon a pin 16 wrap ?ngers 18, also
Control of the arms I48 and I52 is e?ected
urged inwardly by springs indicated at 86.
through the medium of push rods I56 and I58
These wrap ?ngers are provided with yarn eyes
adjustably pivoted to these arms and prefer
82 and 84, the latter serving for the guidance
ably threaded at their lower ends, which extend
of the yarns in the proper paths for presentation 15 slidably downwardly into tubes I68 and I62. On
to abutments and selected needles, as will be
the threaded portions of the push rods I56 and
hereafter described. As will be more apparent
I58 are located adjustable nuts I64 and IE6, lim
later, there are in this modi?cation four types
iting the telescoping action between the rods and
of wrap ?ngers provided with butts at four differ
the tubes. This arrangement is provided since
ent levels, i. e., wrap ?ngers arranged to be 20 the entire assembly of the dial and its asso~
mounted on the brackets secured to the upper
ciated parts and the wrapping mechanism-in
ring 58 and provided with butts at two different
cluding the bobbin plate, the wrap ?nger-‘carriers
levels, and wrap ?ngers adapted to be secured
and the actuating gear mechanism just described‘
to the lower ring 68 and also provided with butts
are mounted in conventional fashion as indicated
arranged at two other levels with space between 25 above, to tilt upwardly away from the needle
the pairs of levels for the purpose hereafter de
cylinder to afford access thereto. When such tilt
scribed. The brackets for the wrap ?ngers may
ing takes place, the push rods I56 and I58 may
be‘ secured in various suitable positions on the
withdraw partially from the tubes I68 and I26,
rings 58 and 68, depending upon the type of pat
while at the same time the actuating connection
tern which is to be produced.
30 is automatically restored when the tilted parts are
The rings 58 and 6B are driven to partake of
brought to normal operating position.
the general rotation of the needle cylinder and
The tubes I68 and I62 are pivoted to levers I68
about the same axis, but are adapted to be ad
and I16, respectively, mounted upon a ?xed
vanced or retarded relatively thereto to provide
pin I12 and provided at their forward ends with
shogging of the wrap ?ngers relative to the nee
rounded portions indicated at I14 on which are
dles. To secure this result, there is provided the
mounted pin followers I16 and I11, respectively,
mechanism particularly shown in Figures 1, 7
and 8, which show the upper and lower gears 62
and 64 respectively meshing with pinions 83 and
arranged to be engaged by pins I18 selectively
carried in holes I85 in a disc I82. Cover plates
I84 are adapted to be clamped over the pins I'i8
85. These pinions respectively mesh with idler 40 located in the disc I82 to hold the pins in posi
gears 86 and 88, which mesh with a pinion 90
tion and also to provide races within which the
carried by the lower end of a shaft 92, the upper
followers I16 and I11 may move during opera
end of which carries the pinion 84 meshing with
tion. As indicated in the drawings, the disc I82
a large gear 95 secured to the bobbin plate 58
is provided with a large number of holes in which
and driven in usual fashion by a pinion 91 (Fig
,, the pins may be selectively located, depending
ure 1) secured to the upper end of a jointed
upon the type of pattern which the machine is to
telescoping shaft as shown in Page et al. Patent
produce. As will be evident hereafter, the ‘posi
1,906,204 or mounted equivalently to permit tilt
tions of these pins are not very critical, and con
ing of the wrap head. In order to maintain the
sequently the holes need not be speci?cally laidv
idler gear 86 in mesh with the pinion 96, it is 50 out with de?nite circumferential indexing. Alter
journalled upon a pin I82 extending through
natively to this arrangement, there may be pro
slots I64 in the supporting casting and mounted
vided radial slots in which are located butt car
in the corresponding ends of links 98 and H16,
rying elements outlining, like the pins, cam sur
which are mounted concentrically with the shaft
faces to be followed by the ends of levers I68 and
92. Similarly, links I66 and I68 carry a pin III) 55 I16.
at a ?xed radial distancefrom the axis of shaft
The disc I82 is carried by a shaft I86 mounted in
82, on ‘which pin there is mountedthe idler 88,
a bracket I63 secured to the machine frame, which
the pin [I6 also passing through suitable slots
shaft carries the pinion I88 the teeth of which are
I I2 in the casting.
arranged to mesh with teeth I90 produced by
The pinion 83 is in turn kept constantly in
slotting the lower disc I92 of a pattern drum I94,
mesh with idler 86 by means of a pair of links
which is of conventional type. This pattern drum
H4 and H6, which maintain at a constant‘ dis
or trick wheel is provided with axially extending
tance apart the pin I62 and the pin IIB‘upon
slots in which are adapted to be arranged pat
which pinion 83 is mounted. Similarly, links I28
tern elements I 96 containing selectively arranged
and I22 maintain constant the spacing between 65 butts I98 and held in position by one or more
pin H8 and pin I24 upon which the pinion 85 is
spring bends 266. The lower disc I92 is pro
vided with ratchet teeth 282, whereby the drum
The pin H8 is maintained at a constant radial
may he stepped about to control, in the present
distance from the axis of rotation of the needle
machine, both the selection of wrap ?ngers and
cylinder and the gear 96 by reason of its being
70 needles for wrapping and the production of reverse
guided in arcuate slots I26 in the casting which
are concentric with the cylinder axis. Upper and
The selection of wrap ?ngers is effected by the
lower. links I36 join the pin I I8 to a yoke I32,
mechanism disclosed particularly in Figures 11
which is secured to a shaft I34, mounted in the
to 17.1 Follower levers 284 and 266, pivoted. at
supporting casting, which shaft. is connected 76 288, and forming two out of a large group of
levers which will'be hereafter. referredi to, are
arranged to be ‘engage'dlbyi butt‘sfl I 93>’of5 di?erentv
lengths at correspondingv levels on pattern ele‘_'
ments I96 and areconnectedlby'links 2H] and 2 M
purpose o'filremoving the: pin 214 from ‘the paths
of? any wrap’?nge‘rs‘i which mayrbepro‘jected:
Aipin'ifil, provided’ with a‘ head’ElS; is slidably
A spring 233"reactisi‘between'.the pivotedl pin 231'
265: The spring 212:" is‘ intermediate inlstrength
between thespr-ingSLZB-Z and 222' to effect the~con'
trol operations hereafter" described.
The present machine contemplates'the shog
ging' of the wap ?ngers thrcughvery substan
tial angles‘relativeto the needle'cylinder and in
mounted in the arm 26'!‘ and‘ is ul‘g'ed'upwardly
by a spring ZTB’into-contact with the end of "lever
to arms oarriedfby nested'shaft'st 216 and 220’
23A. The lower‘ end of the pin 21'! extends into
which,‘ in turn, at'rthefop'p'o‘site sideL-of the ma‘
a bore 286 provided'in" a plunger 28!, which is in
chine carry; arms 222‘ andi23U; Theiarm 222 ‘is
turn guided‘ in‘ a bore" 283 in the bracket 265." The
provided with an adjustable‘ screw 224' whichi‘is‘
plunger 28!‘ is urged‘: upwardly by a spring'282
arrangedito engage a member 225fcarried'by‘th'e
lower end of a push rod 228. The lever 230P=is 10 stronger than the spring 219, the upward‘ move-'
ment of the'plu'ng'erbeing limited by‘nut 2 84 car
provided with a pivoted pin 23!? through which
ried by a threaded extension or" the plunger and
extends. a push‘ rod ‘232"which; atlits'upp'eriend
arranged to’ abut‘ the‘ lower side or‘thezbracket
is pivoted-‘to a lever 234*mounte'd-1on‘ azpin“ 236'.
and collar' 235‘ on rod? 232» to‘ effect‘ strong‘ but‘v
yielding upward thrust‘ of th'ellever'2355‘upon rod
232, the expansion of spring? 233 being‘ limited
by a stop collar 231. A“spring"239' urges lever
23!] downwardly and‘the‘butt‘ I98 acts to move the
push rod 232 upwardly against: the action of‘this
spring; In the case of‘levert2225a- strong spring
238 capable of‘ overcoming spring: 256; later'de
scribed, urges lever‘222 an'dir'od'228 upwardly ‘as
permitted by the absence‘ of aibuttior the'presence ‘
of a' butt of reduced?height'in'rthe'trick wheel.
It‘will thus beseen that'a longer butt‘controlling
rod 232 serves to move it upwardlywhile a-long'er
butt controlling rod'zzs permits itito move down
~ the production of'patterns in which such con-1v
siderable‘ ranges of ‘ shogging are involved, it
sometimes‘happens that the wrap'yarn' may ex;
tendirthroug'h a considerable circumferential ex
tent‘ offthe soaking. between a point where it was
previously‘ knit to a‘point'where it is next to be
taken'byi the needles; In the wrapping opera
tion, therefore; the yarn may occupy a chord
with respect‘yto therneedle circle subtending such
a circumferential angle that the needles in ris
The mechanism- controlled by th’e’p'ush' rodw223' 30 ing at the wrap point may‘ move upwardly be
hind, rath'er'than‘ in? advance of, the‘ portion of
is illustrated‘in detaiIIinFigure 12'.‘ The upper
end of the push‘ rod'fengages the ‘lower‘si-d‘e of an
ear 246T extending» from a! sliding sleeve 2132‘
mounted‘ upon an‘uprighti?xedf‘rod‘?il. The
sleeve 242 carries a plate-2M‘ provided with a cam
edge 2'46 arrangedito engage tho'se butts of the
wrap ?ngers which move" at‘ the'l-ower pair of
levels mentioned above.‘ Alguide rod’ 25D‘Icarried
by a suitable ?xed bracket‘ is embraced by‘ an
opening inan'arm 2521 carriedi’b'y plate 2441‘ to,
prevent rotation-1 of'the sleeve‘242" and itsv assernL
bly about the pin 245 as verticaLsliding takes
place. The sliding assembly is-normallyurg'edi
downwardly by a spring 256, weaker'inits eife'ct ‘
the wrapyarnext‘ending across the needle circle '
so as'to miss-‘it; this'being true; of course, only
when. the wrap“ ?hger'as it moves the yarn for
new engagement by the" needles, is substantially
in‘ advance, inthe direct'ion'of‘rotation, of the
needle which last knit the yarn. To correct this
condition, there is providedla yarn placing device
particularly illustrated in Figures 18130 22. ‘Such
adevice maybe locat'ed'atiboth Wrap points in
the machine or’ only one if the patterns which
are! produced are such that'the chordal path of
the wrap yarn which would cause the needles to
miss it would occurionly atfthe one wrap'point.
than spring 238;“which exerts a tension between .
In‘ the present machine, the placer is illustrated
the assembly and the bracket|258¥which supports;
aswas'sociated with the ?rst wrap point or station
only, there being contemplated a set-up of the
patterning mechanism which would avoid‘ its
necessity at the second- station. For 'the' ma
jority of patterns, inv fact, this-is not a restric
tion‘, since the‘ operations may be so controlled
that the» undesirable chordal condition’ of the
wrapyarn‘occursat only one station.
the lower end of the'rod 2355‘;
The mechanism controlled by the rod 2321s il
lustrated primarily in Figures 13 land 141 A ven
tic‘al'?xed rod? 262” serves as'a guide foria' slide" .
2t] urgediiupw'ardly by a1 light spring 2’t2i‘a'nd‘bar
rying a cam 263provid‘edwith an’ edge'portion‘
zee'adapted to engagethe butts of the‘wrap ?n"gers located at'th'e levels of‘the'upper pair.‘ A‘
?xed‘ guide rod 2'56. pas-sing throughan opening
in‘ the assembly‘ serves to‘ prevent its" rotation
about the axis of the rod 222)." The slide'Z'ri'Il‘ is
pre-videdwith an ear 25?, carrying an, extension‘
258,-. which is arranged. to engage selectively; discs
' Abutments ZS-Z‘and 291i vof usual'type;v are pro
VidedTin the form of members extending inwardly
across the needle circle. The abutment 292‘car
ries the wrap horn 239; which extends approxi
mately to‘ the circumferential vposition of‘ the »
26S‘ and 210. formed on-an- upright» post._2l"i;_se
abutment 294. The support 291,- which also ex-'
tends~over the needle circle, carries the usual
wrap guard ‘or horn 3Bl~ (see Figure 2), extend
cured to a‘ lever» 2'52, whichis mounted on an
iri'gr'past- both abutment's in the‘usual fashion.
extension of- the-?xed“ post 289 belowva'bracket
265, ?xedly'secur'ed to ‘the‘po-st. The lever 212
is urged in a-countertz‘lockwise ‘direction as viewed
from above " by a“ spring '2l3"and. - carries ‘a'pin- 2M:
projecting inwardly across‘the‘ circlev of'needles
in a position" tolbe' engaged’ by the'portions' of:
wrap ?ngers below" their pivotsv when ‘ their’.v lowerv
They-abutment 29£ilcarries (the-horn 296; See, for
example, my Patent 2,263,492, dated November
1851941, andv the patent to‘ Page et a1; 1,906,204,
dated-'Aprill25; l933,'as illustrative of an equiv,
alent arrangement of guards and wrap horns for
carrying out in- improved fashion the general
method‘ of effecting wrapping‘ disclosed in the
ends are projected‘outwardly; (See themod
ification of this apparatus illustrated in Figure’
29). A wire 215' extends'through'yth'erlever‘2l2
and‘ is providedv with‘ ‘a. head whereby: through‘
movement of the post 216 lever‘2'l2maysbé rocked‘
patent to Taggart' 2,025,913, datedlDecember 31,
ini‘al clockwise direction‘as viewedYinip'lan‘for the 75
be-Ifurth'er described.
The functions of these[ guards and“ the
temporary engagement- of thew-rap yarn'by the
abutments for seizure‘ by-“th’e needles is con
ventional in the present! machine and ‘need-‘not
, 2,411,4=22
A bracket 233 supports a pin 33!] with its axis
sloping upwardly in the direction of rotation of
the needle cylinder, to which pin there is adjust
ably secured a member 332 provided with ears 304
and 303 into the latter of which there is threaded
an adjustable abutment screw 338.
The car
3613 and the abutment screw 338 provide steps
away from the‘ abutment pin 328 against the ten
sion of the spring 323, the wrap ?nger ultimate
ly clearing the arm 322, which 'will be snapped
back by the spring 328, after which the spring
3l3 will return the placer elements to their origi
nal positions, this, however, following the safe
engagement of
ie yarn by the needles.
In Figures 23 and 24, there are illustrated de
vices cooperating with the sliders 28 to secure the
upon the pin 368, which element carries a placer
arm Sid having a de?ected end 3H3 extending in 10 proper positioning of needles for the transfer
of loops from the dial needles to the cylinder
the direction oi‘ motion of the needles. A spring
needles at the end of the formation of a rib top.
M8 is housed within a cap 323 secured to the pin
To securethis result, which will be described in
330 and between this cap and the element 3“)
greater detail later, the sliders 28 are differen
there is provided a spiral spring 3l3 serving nor
mally to urge the element 3W into engagement
tiated, as indicated in these ?gures, by the fact
that those associated with lowered cylinder nee
with the abutment screw 338. The element are
dles which were not knitting in the formation of
pivotally carries in a hole 324 therein an arm 322,
the rib are provided with vertical outer edges
having the shape illustrated in the ?gures, which
throughout their heights, as indicated at 281),
is urged in a counterclockwise direction as viewed
in Figure 21 by a spring 323 into contact with a 20 while those, 28a, which are associated with
needles which were knitting during the formation
stop pin 323.
of the rib top have the upper portions of their
The operation of this device will be apparent
outer edges cut away, as indicated at 333. A cam
from Figures 18, 19, and 20. As a wrap ?nger 3Z9,
332 pivoted on a ?xed vertical pin 334 is located
adapted to effect Wrapping at the ?rst abutment,
approaches the wrapping position as illustrated in , at such height as to line up with the cut away
portions 338 of the sliders 28a,‘ so that when
Figures 18 and 19, its lower end moves outwardly
moved inwardly beyond the normal outer posi
under the action of cam 246 previously described,
tion of the ends of the sliders 28b it will engage
and in such movement, clears the arm 314, but
these sliders to move them inwardly, but will fail
engages the arm 322 which, as illustrated, is
to engage and move inwardly any of the sliders
slightly beyond the arm 3E4 and.slightly above
for an extension Sit of an element 3H! pivoted
'the same, when the elements are in theirrest
positions.‘ As rotation continues, the wrap ?nger
swings the arm 322 in a clockwise direction (Fig
ure 20) and, the spring 326 exerting a stronger
23a. An outwardly extending arm of the lever
332 is connected by means of a Bowden wire 336
and a spring 331 to an upright push rod of con
ventional character (not shown) actuated by a
tension than the spring 3H3, the'element 3!!) will 35 suitable cam on the main cam drum of the ma
rotate clockwise, the stop pin 328 initially re
chine, the inward movement of the lever 332 be
ing limited by abutment of an adjustable screw
maining in engagement with the arm’ 3.22. The
333 with a?xed post 349. A spring 339 normal
de?ected end 3l6 of the arm 3| 4 is at such level
that the wrap yarn carried by the ?nger 329 will
ly holds the‘cam 332 retracted.
be engaged by the arm Sh'l above the end 3H3, 40
The cams provided to control the needles, and
the pressers, needle jacks and pattern jacks asso
and as the wrap ?nger rotates with the ‘needle
cylinder and moves outwardly, it will, by engage
ciated therewith will be clear from the interior
diagrammatic development of the cams illus
ment with the forwardly deflected portion of the
trated in Figure 2 with respect to which the nee
arm 322 cause a movement of the element 310
at such angular rate as to cause the point of en 45 dles and their associated parts move toward the
gagernent of the yarn with the arm 3l4 to move
left as viewed in that ?gure. The cams adapt
- faster than the adjacent needles in a forward di
ed to act upon the needle butts are the top center
rection. The result is that the yarn is swept to
cam 342, the forward stitch cam 344, the reverse
a position, in advance of the ?rst rising needle
stitch cam 3:36, the lower center cam 348, cams
which is to take it, to extend approximately ra 50 353 and 352 and 352a, provided, respectively, to
dially across the needle cylinder, the de?ected
raise and lower the needles at the second wrap
end 3H6 of arm 3M preventing any possibility of
point, cams 354 and 356, respectively adapted to
the yarn’s dropping below the level of the arm
raise and lower the needles at the ?rst wrap
3H1. Due to the sloping position of the pin 3%
point, cams 353 and 335 for the control of long
with respect to the axis of the needle cylinder, 55 butt needles in the formation of heels and toes,
the end 3H5 of the yarn 3M also moves down
and cams 345, 341,. 353, 360 and 332 the func~
wardly to insure de?nite positioning of the yarn
tions of which will ‘be described hereafter.
in a path to cause it to engage the abutment 292.
Arranged to act upon the butts of the presser
At substantially the moment the yarn ?rst en
jacks 24 are the cams 334, 366 and 368.
gages the abutment, the tail 3.12 of the element 60
The cams adapted to act upon the butts 2i! of
3H] will engage the ear 334, so that clockwise
the needle jacks I8 are 314, 315, 316 and 318.
movement of the element is arrested, whereupon
Cams 383, 384, 386 and 390 are provided for
the ?rst raised needle of the group to be wrapped
action ‘upon the steps 6 and 8 of the pattern
will engage the yarn, effecting the beginning of
jacks It. A beveled upper edge 388 formed on the
the wrapping operation in'conventional fashion. 65 cam
336'is adapted to act upon the lower ends
It will be evident that the placer 3M, in effect;
of certain of the pattern jacks to swing them
does no more than insure that the yarn extends
inwardly as described hereafter. Cams 382 and
substantially radially across the needle circle
384s are arranged to act upon the butts ‘I of
rather than in the form of a backwardly extend
ing chord from the yarn ?nger, which might, re 70 the pattern, jacks d. A group of cam levers
sult in its being missed by the needles and in its ' ' conventicnalized as a series of cams 334, are ar
improper presentation to the abutment.
After the tail 3E2 of the element 3H) engages
the ear 3%, the wrap ?nger will continue to move
ranged for selective action upon’the butts ll] of
the pattern jacks. Cams 392 and 393-a're pro
vided to act upon the upper butts l3 of the pat
_the arm 322,>which, however, may now swing‘ 1 tern jacks. _‘Cams 380 and 384 are relieved as
indicated at 3'8‘! and 333 for reasons hereafter
The postion of the cam 332 shown in Figure 23
v is illustrated in Figure 2.
A second cam, located
in the region where stitches are drawn and indi
‘ cated at 3'52 is also adapted to act upon the outer
ends of the sliders 28, but this cam differs from
will “engage and ride up the rise of cam 38!]. In
riding upwardly, it will carry with it its needle
jack it which, at this time, will be somewhat be
low its needle. The needle jack butt 29 will, by
this action, be carried su?ciently high to engage
cam 314. The cam 314 in turn will now engage
, ‘series 28a and 282).
it ‘to cause it to
cause the needle
raised thereover.
‘is that at which
' with reverse plating, these operations will be ?rst
v28, which will yield outwardly against its retain
‘ cam 332 in having a sufhcient vertical extent to
engage the outer ends of all of the sliders of both
raise its needle su?iciently to
butt to engage cam 354 to be
The resulting level of the needle
it is capable of taking a wrap
A group of ?ngers for feeding the main yarns
yarn at the ?rst abutment 292 if a wrap yarn is
"to the needles is indicated at 361, these ?ngers
there presented to it. As the needle rises over
being arranged to be moved into and out of action
cam 35%, the shoulder located above its butt will
' in conventional fashion.
engage the lower end of its presser jack 2:2, to move
Since the principal function of the present ma 15 this presser jack so that the projection 25 there
chine is the production of wrapping associated
on will be raised past the inner end of its slider
described, with reference thereafter to the addi
ing spring bands for this action, the ?nal position
tional operations involved in the formation of a
of the presser being such that the slider 28 will
stocking. In view of the fact that in this ma 20 engage the surface 21 thereof. ‘After taking the
chine its reverse plating operations are closely
wrap yarn, or after passing the position at which
tied up with the wrapping operations, it will
a wrap yarn could be taken, the needle butt will
be simplest ?rst to describe the operations in
engage the cam 356 to be moved downwardly
volved in wrapping, assuming initially that re
thereunder. Before the needle reengages its
verse plating does not occur, i. e., such operations 25 needle jack i8, the butt of the needle jack will
as would result from the withdrawal of cam 312
engage the cam surface 375, whereby it will be
from position to engage the sliders 28. The de
moved slightly downwardly to be thereafter en
scription also will ?rst be made without refer
gaged by the needle as the needle butt approaches .
ence to shogging.
the bottom of the cam 356, the needle jack then
As the pattern jacks pass the cam 390, they will 30 being moved downwardly somewhat further.
rI‘his preliminary motion of the needle jack by
butts, as having been previously engaged by cam
cam surface 315 has no function in this opera
392 to tilt their lower ends outwardly to present
tion, cam 315 being provided for a purpose here
‘ their pattern butts H! for selection by the selec
after described.
‘ tor cams 3911, the positions of which are controlled '
In the meanwhile, the pattern jack will have
all be brought to a common level, their upper
by the various butts‘ on the elements [9.6 carried
, by the trick wheel I94 in the usual fashion, as
been moving over the top of cam 35%) at such level
thatits butt ‘I will engage the cam 382, which will
described, for example, in my Patent 2,050,946,
serve to rock the jack inwardly ‘so that both of its
dated August 11, 1936. The needle jacks will at
shoulders will clear the cam 388 and the subse
this time be engaged (through the butts l5 of 40 quent cam 384. As a result, when the needle
, the cleaning jacks, the presence of which will ini
jack takes the ?nal» downward movement re
tially ‘be ignored) by the upper ends of the pat
ferred to above, the pattern jack will be moved
tern jacks 4, having been slightly raised with
slightly downwardly and will thereafter ride at
the pattern jacks .at the location of the cam 390.
the level thus determined until moved down
The needle butts at this same time will be riding ' wardly again by the needle jack.
at the level determined by. the cam 351, which
The needle butts will now ride beneath the for-_
was the last .cam toact thereon. The butts 26
ward portion of the cam 350 and will be de
of the pressers 255 will be moving at the level
pressed slightly vfurther by the'cam surf-ace 35!
7 determined by the path between the cams 366 and
of the cam 35!], after passing the cam 358, which,
368, i. e., at their upper level.
50 at this time is withdrawn from action. In the
The cams 394, which control the selection of
movement down they surface 35], the needle will
the pattern jacks, are arranged to leave the
correspondingly lower the needle jack and the pat
pattern jacks which pass themwith their lower
tern jack. The needle butt will then clear the
ends in three alternative positions, i. e. either
withdrawn cam 356, will be raised slightly by
in a fully outward position, in an intermediate
cam 348, will take yarn from one or ‘more of the
position, or in a full inward position. Those
main yarn ?ngers 367 and will ride down stitch
jacks which are in the full outward position effect
-cam.344 to draw a stitch. Thereafter it is raised
a rise of their associated needles at the ?rst wrap
successively by cams 3435 and 341 to its original
point in position to take yarn thereat if yarn
level. The needle jack butt will, prior to the
is presented by a yarn ?nger, or to effect ulti 60 needles reaching the position of the upper center
mately, by reason of such rise, reverse plating, as
cam, engage the cam 3'56 and then cam 318,
will be hereafter described. Those jacks whose
which, during the knitting of the leg of a stock
‘lower ends occupy an intermediate position serve
ing, will occupy the full line position illustrated
to ‘raise their associated needles at the second
.in Figure 2. The cam 318 will move the needle
wrap point, or as hereafter described, to effect 65 jack downwardly and with it the pattern jack, the
reverse plating on such needles. Those jacks
shoulder 6 of which will engage and ride up the
' the lower ends of which are in their innermost
vposition ‘will not cause their needles to rise at
‘either of the wrap points, but will cause their
needles‘ to rise later for proper interlacing .of
wrap yarns, as will be pointed out.
Considering ?rst the actions resulting from
those jacks the lower ends of which remain in
outer position after passing the selecting cams
394, the lower step 8 of each such pattern jack
cam 390 after being projected outwardly by the
cam 392. Thus the jack under consideration will
be brought to its original position for subsequent
selection by cams .394.
A jack which, after passing cams 394 had its
lower end occupying an intermediate position,
will be so located that its lowermost shoulder or
step 8 will miss the cam 380, but its upper shoul- .
75 der '6 will engage this cam and ride up the same.
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