вход по аккаунту


Патент USA US2405583

код для вставки
A@ §39" w46.
orig'ihal Filed oct. 4; 1939
14 sheets-sheet 1v
Aug. E3, 394%.
2,405,583 »
Original Filed Oct. 4„1939
‘14 sheets-sheet 2>
Bus; LA Mß/MH
Original Filed 0611./ 4, i959
14 Sheets-#Sheet 3
fm2. ¿M6/4CH _
. ,
y 42
Aug. 13, 194s.
Original Fil-ed 00j.. 4, 1939
14 Sheets-Sheet 4
original Filed oct. 4, 1939
14 Sheets-Sheet 5
Aug., E3, 1946.
original Filed oct, 4,_1939
-14 sheds-sheet 6
ug. E3» ì4y
original Filed oci. 4, 1939 '14 sheets-skienl e
- Fri-ti mm3/mi
Aug. 13, E46o
, F.'L.AMBAcH`
Original Filed Oct. 4, 1939
14 Sheets-Sheet 9
Aug. Y1.3, 1946.
' `
Original Filed Oct. 4, 1939.y
14 Sheets-Sheet 10
Frat; LAMßAcH
i3, 1946.
F. LAMBAcl-l
Original Filed Oct. 4,1939
14 Sheets-Sheet 11
200 I,\\
ug, 13, 1946.
original Filed oci. 4, 1959
14 Sheets-Sheet 12
Aug. E3, i946.
‘ 21,405,583
original Filed oct. 4, 1939-
14 Sheets-sheet 15
" 4
Patented Àug. 1s, 1946
Fritz Lambach, Tenañy, N. J., assignor to Robert
Reiner, Incorporated, Weehawken, N. J.
Original application October 4, 1939, Serial No.
297,829, now Patent No. 2,363,008, dated Novem
ber 21, 1944. Divided and this application
August 2, 1944, Serial No. 547,765. In Ger
many March 6, 1939.
9 Claims.
(Cl. (i6-82)
This application is a divisional application
divided out of my patent application Serial
#279,829 ñled October 4, 1939, for Art of knitting
fabric onto prefabricated fabric blanks, now
Patent No. 2,363,008.
ing in
This invention relates to knitting machines,
and more particularly to the motor drive of
4 is an end elevation of the machine look
the direction of arrow 4_4 of Fig. 2,
5 is a >section taken on line 5_5 of Fig. 2,y
6 is a section taken on line 6-5 of Fig. 2,
Fig. 7 is a section taken on line l-l of Fig. 2,
Fig. 3 iS a SeCi'fiOrl iìakerl Orl line 3_3 0f Fia 2,
Fig. 9 is a detail showing parts of Fig. 7 in one
knitting machines.
operative position,
An object of my invention is to provide a
Fig. 10 is a view‘similar to Fig. 9 with the parts
knitting machine, the operation of which may be 1o in another Operative position,
automatically changed from a low speed operation to a high speed operation and vice versa,
Fig- 11 iS a Side eleVaiìîOrl 0f the transfer Cle
Viee showing the parts irl neutral inoperative
as the performance of certain operations dur-
ing the manufacture of a fabric or a plurality of
fabrics may require.
Fig- 12 1SV a SeC’ßîOrl taken 0n line |2-i2 0f
15 Fig. 6,
Another object of my invention is the con-
Fig. 13 is a detail in front elevation illustrat
struction of a knitting machine equipped with
ing the guiding means fOr the needle bar, krlOCk
an automatic transfer device for transferring
OVer Comb, and transfer device.
prefabricated fabric blanks from a supply of
Fig. 14 iS an enlarged detail 0f a Dart 0f JElle
such prefabricated fabric blanks onto the needles 2o knitting section of the knitting machine,
of the knitting machine and/or equipped with
Fia 15 is a section taken on line I5-i5 of
an automatic thread clamping- and cutting deFîg- 14, '
vice for cutting threads, which knitting machine
Fig» 16 iS a View Similar to Fig. lâwith the
may be automatically operated at low speed durDarts in aIlOÍ'rher DOSiiìiOrl,
ing the transferring and/or clamping and cut- 2 _ Fîe- 17 iS a face elevation 0f the Yparts shown
ting operations and at high speed during the
m Flg» 1,6 in the direction Of line l'i--l'ii
knitting of the fabric or fabrics,
A further object of my invention is to improve
upon the construction of knitting machines as
Fig. 18 is a view similar to Figs. 15 and 16 with
the parts in Still another DOSi'GiOD»
Fig- 19 is 9# View Similar t0 Fig- 17 Wiil'l Cer
now ordinarily mada
30 tain parts in section to illustrate a construction
My invention consists in certain novel feathereof’
turs of construction of my improvements as will
Fig~ 20 i5 a Section taken Orl line 2li-2U 0f
be hereinafter fully described.
Fig- 16J
Further objects and advantages of my invenFîg- 21 is a diagrammatic illustration 0f a
tion will be apparent from the following dis- 35 Combination leg and ÍOOt blank,
closure of an illustrative embodiment thereof.
Fig- 22 ÍS a diagrammatic illuStratiOnjof the
The accompanying drawings illustrate the a@
stocking fabric in topped position on the trans
plication of the invention to a so-called “heeler”
fer par’
or hee-ling machine of the ñat knitting machine
Fig. 23 is a diagrammatic illustration of the
type, which is intended to knit heel tabs as com 40 stocking blank with the heel tabs knitted therein,
tinuations of the high heel portions of a com-
F1524 1S an erflarged dei@ 0f the thread
bination leg and foot full-fashioned stocking
clampmg E_’md Cim-’mg mechamsm’
blank, and to interknit Said blank with the heel
n Fig. 25 1s a diagrammatic illustration of the
tabs. It is, however, to be understood that the 45
invention is in no way limited to such a heeler
or heeling machine.
In the drawings:
Fig. 1_is a top plan view of the knitting ma_
e. 2 _1S a SeetlOn 'Baken Orl llrle 2-2 0f F1g-_1,
_ Flg. 3 is‘an enlargedhrear elevation of the knlt11mg machlne Wlth Certaln parts removed for the
sake of clarity,
Fig. 26 is a detail in top plan of a portion of
the mechanism illustrated in Fig. 25, with cer
tain parts broken out, and
Fig. 27 is a diagrammatic illustration of the
speed Com-,m1 mechanism,
chme with certain parts removed for the Sake 5“
of Fc‘ìlantv,
turn-table locking control mechanism,
Referring now to the drawings, a motor 65e
(Fig. 2) for the normal high-speed operation of
the machine and a motor 652 for the occasional
low-speed operation of the machine are attached
to the support I6 carrying the frame l2 of the
‘ 5b knitting machine.
The high speed motor 650 is
directly connected to the main cam shaft |3 of
the knitting machine through the medium of a
gearing 654, 65B, 665 and 562 (Figs. 2, 3 and 5)
232 is the additional cam for high and low
knocking over during the transfer of a prefabri
cated stocking blank from the transfer bar to the
for driving the main cam shaft IB. A free wheel
coupling 555 is arranged between the low-speed
motor 552 and the pinion 664 also meshing with
228 is the normal high and low knocking-over
working cam;
the gear 55S of said gearing.
236 is the high and low knocking-over narrow
ing cam;
|80 is the catch bar working cam;
|82 is the catch bar narrowing cam;
84 is the additional press cam for moving the
needle bar during the transfer of a prefabricated
Furthermore, a
double pole magnetic switch or change-over '
switch 668 (see left half of Fig. 2) is mounted
on the knitting machine frame. Said change
over switch is controlled by the pattern control
mechanism of the knitting machine in a manner
to ‘be described later on. When the switch 568 is
l stocking blank from the transfer bar to the
in such a position that the high-speed motor 658
is fed with current from the electric source, the 15
8.5 is the press working cam;
high-speed motor drives the main cam shaft I3
82 is the press narrowing cam;
through the 'medium of the gearing 654, 555, ââû,
54 is the regulating working cam;
652, whereby the pinion 654 is also rotated by the
96 is the regulating narrowing cam;
gear '656; the low-speed motor '652, however, is
254 'is the second round cam for the narrowing
not rotated, as the free wheel coupling 666 is 20 machine during the working operations;
arranged between the pinion 5.64 and the. low
255 is the second narrowing machine cam;
speed motor 552. When= on the other hand, the
294 is the round cam for the sole transfer
switch |568v is in such a position, that the low
speed motor 552 is fed with current from the elec
tric source, the low-speed motor 652 drives >the
gearing 556, 658, 562 by means of the pinion 554,
which now is positively rotated by the coupling
666, so that the main cam shaft i8 is revolved
295 is the working cam for the sole transfer
mechanism for transferring the soles by one or
two needles on to the needles knitting the heels;
'|32 is the push cam for the pattern chain;
'H2 is one of the two halves of the narrowing
slowly. In this case, the gear 655 rotates the pin
shifting cam;
ion 554 directly connected with the. high-speed 30
‘|13 is the other half of the narrowing shifting
motor 650, so that the rotor of the high-speed
motor 650 is also slowly rotated. Thus, during
Tm is the cam for shifting the shifting roller '|53
the operation of the knitting machine either the
cooperating with two halves of the `marrowing
high-speed motor 65B or the low-speed motor 652
shifting cam;
drives the main cam shaft I8 so that the latter 35
constantly rotates.
Fig. 27 diagrammatically
H8 is the thread tension working cam;
|20 is the thread tension narrowing cam;
shows an electrical circuit illustrating a possible
Si! is the needle bar working cam;
way of selectively supplying current to the mo
B2 is the needle bar narrowing cam;
tors. The current from the feed lines 610 where
62S and 62T are collars for the feed motion of
in a line switch lill may be interposed, is con 40 the turn table said collars being ñrmly mounted
trolled by means of a manually operable master
on the main cam shaft;
switch B12 adapted.l by the function of a single
530 is an auxiliary cam cooperating with the
pole magnetic switch 513 associated therewith, to
start and stop the machine. ' The line switch 67|
mechanism ofr the transfer device;
5|6 is the working cam for the transfer device;
and the single pole switch 613 being closed, the
current may then'flow to the high-speed motor
650, or to the low-speed motor 652. The pole of
the change~over yswitch 658 may be reversed by
actuation of a limit switch '674 under control of
the pattern control mechanism, as will later ap- f
5 I8 is the round cam for the transfer device;
554 is the working cam for the gripping latches
of the transfer device.
Figs. 2 and 8 show the control cha-in or pat
tern chain '|08 controlling the various mecha
nisms of the knitting machine. This pattern
chain '|55 is advanced by one link for every revo
Fig. 3 shows all the cams which are arranged on
lution of the main cam shaft i3. For this pur
the main cam shaft £8 for driving the various
pose the push cam '|32 (Figs. 3 and 8) for the
mechanisms of the knitting machine. Thesecarns
pattern chain or narrowing chain '|06 cooper
as shown from left to right in Fig. 3 are enu
ates with the roller '|35 of the spring actuated
merated as follows:
push lever 13| swingably mounted on the nar438 is the thread-cutting cam arranged on the
rowing jack '|33 at '129. During every down stroke
gear 562 as a flange thereof;
of the roller lever -|3| caused by means of the
|58 is the draw cam which is loosely arranged
push cam 732, the free end '|28 of the roller lever
on the main cam shaft i8;
(i) 13| depresses the pawl arm 12S, so that the pawl
314 is the push cam for advancing the thread i
'|24 (Figs. 2 and 8) attached to said arm ‘|26
carrier spindle and the narrowing mechanism
feeds by one tooth the gear 122 secured to the
producing the narrowing of the heel, said push
shaft 'H6 of the narrowing chain drum 1|4.
cam is firmly secured to the main cam shaft like
Thus, the narrowing chain 705 guided by the
all the other cams except cam | 53.
rollers '|18 is intermittently advanced. A row of
|94 is the catch bar lifting cam;
|95` is a round cam representing one of the
spring actuated narrowing jack levers ‘1|2c, 1|2b,
H20, H211, 112e, 'H2L 1|2g and 'llEh (Figs. 2
two round cams for the narrowing machine dur
and 8) is swingably arranged on a rod 'H3 car
ing the working operations and also representing
ried by the narrowing jack 133. As often as one
of the narrowing buttons 'H5 arranged in sev
the round cam for'the catch bar> during the nar- t
rowing operations;
252 is one of the two narrowing machine cams;
22|! is the forward knocking-over working cam;
222 is the forward knocking-over narrowing
eral rows and at certain distances on the nar
rowing chain 166 cornes in engagement with the
projecting extension of one of said narrowing
jack levers, the respective narrowing jack leverY
is swung about the rod H3, whereby the respec
tive mechanism in the knitting machine is con
trolled or released respectively. The narrowing
jack levers operate the respective mechanisms
by means of linkages. Now, the following con
of said link 206 is pivoted to another link 2 I0 at
208.- The free end of this link 2I0 is pivoted to
the arm 2I2 of a double-armed roller lever v2I6
loosely and rotatably arranged on the needle
trolling operations carried out by the narrowing DI bar shaft 22. During the‘knitting operations the
roller 2I8 of the lever 2I6 cooperates with the
jack levers are enumerated:
forward knocking-over working cam'220 (Figs. 3
The narrowing jack lever 'II2a controls the
and 6 and during the narrowing operations said
thread-cutting device;
roller 2 I8 cooperates with the forward-knocking-V
The narrowing jack lever 'H217 controls the
transfer device and renders the additional press 10 over narrowing cam 222, whereby the forward
and backward movement is imparted to the
cam as well as the additional cam for high and
knocking-over bits.
low knocking-over active or inactive respectively; _
The knocking-over bits must, however, also
The narrowing jack lever -II2c controls the
_perform an up and down movement. For this
feed motion of the thread carrier spindle and the
narrowing mechanism during the knitting of the 15 purpose a lever 2N (Fig. 6) is keyed to the knock
ing-over shaft 26. For a purpose to be described -
The narrowing jack leverklIZd controls the
later on„the roller 226 of said lever 224 is shift
feed motion of the thread carrier spindle and
the narrowing mechanism during the knitting of
ablyy arranged on a pin 221 attached to the lever
224. The roller 226can be shifted on the pin
the ravel courses;
The narrowing jack lever 'H26 controls the
loose-course intermediate lever for knitting Aa
loose course;
The narrowing jacklever ‘H23’ controls the
stopping device of the turntable carrying the
prefabricated stocking blank;
Thernarrowing jack lever 'II2g controls the
221 by means of a fork lever 236 secured to a
control rod 3G (Figs. 2 and 6), which is slidably
arranged in the machine frame in longitudinal
direction. The operation and control of this con
trol rod 34 will be described later on. As long as
the roller 226 is in its normal position, it co
operates, during the knitting operations, with
the normal working cam 228 for high and low
knocking-over (Figs. 3 and 6) and during the
narrowing operations, with the high and low
change-over switch for high and low speed oper
ation of the knitting machine;
The narrowing jack lever 'IIZh controls the 30 knocking-over narrowing cam 230, which im~v
parts to the knocking-over bits the desired up
transfer of the soles by one or two needles on
and clown movements.
to the needles knitting the heels.
Figs. 7 and 8 show the driving mechanism by
The knitting mechanism and the narrowing
means of which the needle bar 66 carrying the
mechanism are fully described in my co-pend
needles «3S is lifted and lowered. The needle bar
ing parent patent application Ser. #297,829.
¿i6 has two downward extensions 50 (Figs. 2 and
Hereinafter only those mechanisms, and parts
'7) linked to the small needle bar arms 56 at 52.
of the knitting machine will be described, which
The small needle bar arms are keyed to the needle
are necessary for the understanding of the in
bar shaft 22 _iournalled in the machine frame.
vention described herein.
When the knitting machine
started and the 40 Furthermore, the roller lever 56 (Fig. 8) carrying
the roller 58 is secured to the needle bar shaft 22.
main cam shaft I8 revolves, at certain periods,
During the knitting operations the roller 58 co
each time a transfer of the soles shall take place,
operates with the needle bar working cam 60
the narrowing jack lever 1 |271, is swung by means
(Figs. 3 and 8) , and during the narrowing oper»
of buttons mountedon the narrowing chain 106,
ations the roller 50 cooperates with the needle
which is intermittently advanced. Each time the
narrowing jack lever 'IIZh is swung, a linkage
bar narrowing cam 62. The oscillations thus im
parted to the roller lever 56 produce the lifting
(not shown) connected to said narrowing jack
and lowering movements of the needle bar
lever causes in a well-known manner .a shifting
through the medium of the smallA needle bar
of the narrowing roller'l68 (Figs. 3 and 8) by
means of the cam 110 in the direction of the
axis of a shaft 109 carrying said narrowing roller
168, so that the narrowing roller comes into
engagement with either one of the two halves of
the narrowingshifting cam 112, 113. Fig. 3
shows the main cam shaft I8, which is rotatably
and slidably arranged in the frame o_f the knit
ting machine and'may be shifted in longitudinal
direction, in the position which it occupies dur
ing the knitting operations of the knitting ma-l
chine. When a narrowing operation controlled
by the narrowing jack lever 'I IZh takes place for
transferring the soles by one or two needles on
to the needles knitting the heels, the main cam
shaft I8 is shifted in the direction of the arrow
A to the left.
The drive of the knocking-over device is shown
in Figs. 3, 6 and 7, The knocking-over bits 200
are mounted on the frame |68 rigidly secured to
a shaft 202, the ends of which are rotatably
mounted in two spaced small lever arms 204
(only one of same is shown in the drawings).
The lever arms 204 are keyed to the knocking
over shaft 26, journalled in the machine frame.
Furthermore, a link 206 is rigidly secured to the y
shaft 202 as best shown in Fig. 6. The free end
arms 54.
Fig. 7 shows the driving mechanism by means
of which the press movements are imparted to
the needle bar 46. The press arm 'I6 is loosely
and rotatably mounted on the needle bar shaft
22. One end of a connecting link 'I0 is linked
to said press arm at 12, the other end of said link
'f6 is pivoted at 63 to the free end of the needle
~ bar cross arm 66 secured t0 the needle bar.
press arm 'ifi carries at its lower end a pivot 16,
on which a roller 'i8 is shiftably arranged. This
roller 'E8 may be shifted by means of a fork lever
S8, which, like the‘fork lever 236 (Fig. 6), is se
cured toV the control rod 34 and performs the
shifting of the 'roller in a manner and for a pur
pose to be Ádescribed later on, when the control
rode!! is shifted as will be described later on.
When the roller ‘I8 is in its normal position, dur
ing the knitting operations of the machine, the
roller 'I8 cooperates with the normal press work
ing cam 86 (Figs. 3 and 7) , and during the nar
rowing operations the roller 'f8 cooperates with
the press narrowing cam 52, whereby the needles
are moved against the press edge I33 orl against
` the points of the transfer lingers 23811, and 23817
and narrowing lingers 298e, and 298e respectively
as required during the knitting and narrowing.
an adjustingscrew IGZ (Fig. ‘7) is adjustablyar
ranged on theV press arm ï-i. The end of the ad
justing screw H32 abuts against the regulating
arm 99 loosely and rotatably mounted on the
needie bar shaft 22 and provided with a roller 9_2.
and at the proper time the operator may replace
the empty transfer bar by a fresh, full transfer
Figs. 1 and 26 show the turn table 588 in a
position, in which a spring actuated stop pawl
596 pivoted to the frame 552 at 5971 is in engage
During 'the knitting operations of Vthe machine
said roller 92 cooperates with the regulating work
' ment with one of the six stops 562 arranged on
the transfer bar T. in the manner as shown in
frame at the point 623 and carries, approxi
Fig. 22. Preferably, before the operation of the
knitting machine is started, the operator inserts
several transfer bars T having the prefabricated
stocking blanks 8&3 topped thereon in above de
which is in engagement with the two rings 625
the turn table, and holds the turn table in such
ing cam 944 (Figs. 3 and '7), and during the nar
a position that a full transfer bar T placed on
rowing operations the roller 92 cooperates with 10 the turn table may be gripped by the transfer
the regulating narrowing cam 9e. The regulating
device. The gripping of this full transfer bar
arm 9B serves to regulate the length of the loops.
by the transfer device and the return of the
In order to render possible the automatic trans
empty transfer bar by the transfer device will
ferring of prefabricated stocking blanks on the _
be described later on. When the empty transfer
needles of the knitting machine, the knitting ma
bar is returned into the respective section of the
chine is provided with a rotatable supply table
turn table and the transfer device has been re
or turn table 585) and an automatic transfer de
turned into the neutral position with the grip
vice 4138 (Figs l, 4, 6, 7, 9-12, 25 and 26). The
ping latches at a small distance above the turn
turn table 580 is rotatable about the vertical
table as will be described later on, then a button
axle 594 mounted in the frame 522. This frame
'H0 of the pattern chain 'm6 (Figs. 2` and 8)
582 is swingably arranged on the shaft 584 (Figs.
actuates the narrowing jack lever 'E IZf which, in
1, 4 and 36) arranged in the machine frame h3,
turn, swings the latch 5% through the medium
and is held in its operative position shown in Fig.
of a linkage 769, '162, 76d, so that the stop pawl
1 by means of a conical lock screw 588. If for any
596 is disengaged from the stop 5&2. Now the
reason the operator wishes to have access to the 25 feed pawl 688 can become active and can ad
mechanism of the knitting machine, he may,
vance the turn table 558i! by means of the ratchet
after removal of the screw 588, swing the turn
wheel Se@ in the following manner. 'I‘he spring
table 58d with its frame 582 about the shaft 584.
actuated pawl EBS is pivoted to one end of a
The turn table 53B has a number of sections,
lever 6I() swingably mounted on Vthe frame 582
for instance six. Said sections are provided with 30 at 6I I. The other end of the lever 6H) is in en
extensions 592 having slots in which the operator
gagement with a push rod S I 2 having two set col
may insert transfer bars T as shown in the draw
lars 6M and SI5 secured thereto. A spring SIS
ings. Fig. 21 shows a vprefabricated stocking
is inserted between the set collar SI5 and the
blank dei), inwhich between the high heel por
lever GIB slidably engaged with the push rod SI2.
tions 894 and the sole portions 868 the separat- The rear end of the push rod @I2 is pivoted to
ing courses BIO are still present. After, in a suit
one end of a bell-crank lever 6ft (Figs. l andV
able device, the separating courses BID have been
4) at 6I?. The other end of the bell-crank lever
removed by the knives K and the first course of
SIB swingably mounted at 6m is pivoted to one
sole loops has been brought in line with the last
end of an intermediate link S29, the other end
course of high heel loops by folding over, the 40 of which is being pivoted to a lever S22. This
prefabricated stocking blank 86d is topped on to
lever 522 is swingably mounted on the machine
scribed manner into several sections of the turn
table 58B, whereupon during the feed motion of
mately at its center, a roller B24 (Figs. 3 and 4)
and 621 keyed to the cam shaft IS. Thus, every
narrowing shift movement of the cam shaft I8
in the direction of the arrows A, B causes an
oscillationof the lever 622 about the pivot E523.
the turn table about its axis 594, which will be
This oscillation of the lever 622 produces a re
described later on, the supply on the turn table 50 ciprocating movement of the push rod H2 by
means of the intermediate lever 620 and the bell
may continuousli,r be renewed, so that an unin
terrupted operation of the knitting machine is as
crank lever BIB. Thus, when the narrowing
operation is initiated by means of the narrowing
The turn table 58@ must be advanced in such
jack lever 'HZf as described above, the push rod
a manner that at the moment when a full trans 55 SI2 ñrst is shifted in the direction of the arrow
fer bar carrying a prefabricated stocking blank
H, whereby the set collar 6M secured to the push
shall be gripped by the transfer device the turn
rod SI2 swings the lever 6I!! in the direction of
the arrow I about the pivot SI I so that the spring
table holds such a full transfer bar in front of
actuated pawl 608 is moved back by one tooth and
the transfer device. Then, the turn table must
remain in this position until the transfer device 60 is engaged with another tooth of the ratchet
has returned the empty transfer bar, after trans
wheel 60B. When, at the end of the narrowing
ferring the prefabricated stockingblank on to
operation, the cam shaft is shifted in the direc
tion of the arrow B and the push rod 6i2 is
the knitting needles, into the saine section from
which it previously removed the then full trans
shifted in the direction of the arrow L, the lever
fer bar. When this operation has been carried 65 6H) is swung in the direction of the arrow M by
means of the collar SI5 through the medium of
out, the turn table must be advanced during the
the interposed spring (H5 whereby the ratchet
knitting operations of the knitting machine, so
wheel 666 is advanced by one tooth. After this
that, before the transfer device may grip an
other full transfer bar of the turn table for a
advancement of the ratchet wheel, the inclined
new cycle of operation, the turn table has again 70 edge (intl of the stop 602 comes in front of the
edge 635 of the pawl 596, so that, upon the
brought such a full transfer bar in front of the
transfer device. The empty transfer bar, which
subsequent return movement of the narrowing
has been moved away from the knitting machine
jack lever H21“ the spring actuated stop'pawl
by the feed motion of the turn table, may then
59S can not engage any more the f_ront edge of
be removed from the turn table by the operator, 75 this stop 602 and the ratchet wheel 663 can be
advanced by the feed- pawl B08 without any ob
struction during repeated feed motions. The
various positions of the ratchet wheel 600 are
locked by a small spring actuated lock pawl 634
rotatably mounted at 635. The ratchet wheel
606 is, however, not directly, but indirectly cou
the predetermined moments, as described above.
Furthermore, it is necessary, that, after a 1in
ished stocking blank has been pressed off, the
transfer device performs the following move
ments during a single revolution of the cam shaft:
vFirst the transfer device is swung against the
turn table for the gripping of a full transfer bar,
then the transfer device is swung against the
needle bar for the transfer of the prefabricated
pled with the turn table 580. As may be seen
from Figs. 1, 4 and 26, the ratchet wheel -006 is
loosely arranged in a recess of the turn table
580 between its flange 640 and its part 61M pro 10 stocking blank to the knitting needles, ‘then the k
transfer device is again swung against the turn
vided with the stops 502 and may be rotated
relatively to the turntable; furthermore, the
ratchet wheel has a vplurality of elongated slots
>table for the deposing of the empty transfer bar
on the turn table, and finally the transfer de
vice is raised to a small degree into the neutral
542, which are in engagement with pins SM se
cured to the upper side of the part 54|. Small 15 position. The transfer device and its driving
mechanism to be described hereinafter carry out
springs 046 are inserted between these pins and
said operations.
one end of the slots 642. Every feed motion of
According to Figs. 4, 6, 7 and 9-12 the sup
the ratchet wheel 606 is transmitted to the turn
porting frame 500 of the transfer device M8 is
table 580 by means of the spring 645 and the
loosely and rotatably mounted on theneedle bar
pins 644. Now, when the turn table has been
shaft 22. The support 5(80 is provided with lugs
advanced by Vone tooth with every narrowing
502. Bell-crank levers 506 are pivoted to said
operation, after a certain number of feed motions
lugs at 504. The rear end of these bell-crank
the spring actuated stop pawl 595 comes in en
levers is provided with an adjusting screw 53d,
gagement with the next stop 602 of the part
54| being integral with the turn table 580,~where 25 which normally is pressed against the support
500 by means of a spring 536 stretched between
by the turn table 583 is arrested in such a posi
the bell-crank lever 505 and the support, so that
tion that the next section carrying a full trans
the bell-crank levers are normally held in a pre
fer bar is in front of the transfer device. Now,
determined adjustable relative position with re
when during further narrowing operations the
push rod SI2 is repeatedly reciprocated in the 30 spect to the support 500. The. gripping latches
538 (see particularly Figs. 11 and 12) are piv
direction of the arrows H and L, at first the
oted to the front end of the bell-crank levers at
ratchet wheel 606 is advanced to a small extent
539. The gripping latches are subjected to the
by one or two teeth and is rotated relative to
action of a tension spring 5110 which is stretched
the turn table 560 held in its position by the
stop pawl 59E, as long as the small springs 546 35 between the gripping latches and the arm 505
and tends to draw the gripping latches into clos
may be compressed. Thereupon, when the small
ing position. Furthermore, on the side of each
springs are compressed, the ratchet wheel 606
gripping latch a stud 542 is arranged, which co
cannot be advanced further, so that, while the
operates with one of the two guiding finger le
pawl 608 is moved back by one tooth and is en
gaged with another tooth of the ratchet wheel 40 vers 544. These guiding finger levers 544 are
loosely arranged on the shaft 32 supported by the
when the push rod SI2 is moved `in the direction
machine frame, and may carry out small swing
of the arrow I, the pawl 603 and the lever 6I0
ing movements in a manner to be described later
carrying same, however, remain in the new po
on. When, during such a swinging movement,
sition when the push rod SI2 is moved in the
direction of the arrow L, and the shifting of the 45 .the guiding finger 544 abuts against the stud
542, the latches are opened against the action of
push rod results in a compression of the spring
the spring 540. When, during such a swinging
E16. Thus, during further narrowing operations,
motion, the finger 54d is moved away from the
the reciprocating movements of >the push rod
stud 542, the gripping latches are brought into
SI2 have no effect at all on the ratchet wheel
E06, merely the spring BIG is expanded and com 50 closing position by the action of the spring 5ML
vWhen a transfer bar T has been gripped by the
pressed. Thereupon„as soon as the narrowing
gripping latches, the latter press same into a
jack lever 'II2f swings the stop pawl 596 as de
recess 566 (Figs. 6 and 12) of the arms Edt owing
scribed above, the turn table >can again be ad
to the action of the spring 5:20, so that the trans
vanced in the manner described ¿by means of
the push rod 6I2. The arrangement of the small 55 fer bar T is held firmly in its position, when the
gripping latches are in closing position, and can
springs 646, which, after the stopping of the
not fall out of this position, when the transfer
turn table 580 by the' engagement of a stop 602
device having its support 500 loosely arranged on
with the stop pawl 590, are compressed, as de
the needle bar 22 is swung about this needle bar.
scribed above, results in a firm pressing of the
respective stop 602 against the stop pawl 596, 60 In order to make this swinging movement pos
sible, gears 508 rigidly connected with the sup
so that the turn table 580, which is prevented
port 500 in a suitable manner are also loosely
from a return movement by the small stop pawl
mounted on the needle bar shaft 22. Said gears
634, cannot move to the slightest extent and
508 mesh with gear segments 5I0 keyed to the
assures a proper holding of the transfer bar,
which is inserted in the- respective section, in 65 shaft 32. When an operation of the transfer
device is required at a predetermined time, the
front of the transfer device in such an accurate
gear segments 5I0 meshing with the gears 508
position that the transfer device may surely grip
are osoillated vby means of suitable movements
the transfer bar.
of the shaft 32 as will be described later on.
Now, the transfer device M8 is to be described.
The cam drive controlling the support 500 and
This transfer device must be controlled in such 70
the fingers 544 is best shown in Figs. l-4. A roller
a manner, that, during the knitting and narrow
lever 5I2 which is subjected to the action of the
ing operations, the transfer device is in a neu
tral position with its gripping latches at a small
distance above the turn table 580, so that the
strong spring 526 and ~carries the two rollers 528
and 5M, is keyed to the shaft 32 carrying the
latter can be advanced without obstruction at ..75 `gearsegments 5I0. The roller 528 is rotatably
but not shiftably arranged on the lever 512, while
'the roller 514 is rotatably and shiftably mounted
vof the cam 51S, is the position in which the grip
on the lever 5112. 'I‘he roller 528 always cooper
ates with the auxiliary cam 530, irrespective of
the fact whether or not the cam Vshaft 18 is
shifted for a narowing operation, as the auxiliary
cam 535 (see Fig. 3) is broader than the roller
528. The roller 514 cooperates either with the
working cam 513 for the transfer device or with
turn table, The radius of the round cam_518
is- somewhat shorter- than the distance between
the above mentioned highest points of the work
the round cam 518 for the transfer device and v'
may be shifted from the round cam 518 to the
cam 516 and vice versa by means of a forked
lever 525 at moments controlled .by the pattern
chain in a manner to be described later 0n.
When the roller 514 is in engagement with the
ping latches remove a full transfer bar from the
ing cam 516 and its center point, so that, when
the roller 514 contacts >the round cam 518, the
support 559 with its gripping latches 538 ís in
a somewhat elevated position as shown in Fig. 1l.
In this position, which has been designated as the
neutral position of the transfer device, the latches
538 are above the quills or transfer points P of the
transfer bar T, so that the turn table 58S may
be advanced without any obstruction.
The cam 554 mounted on the main cam shaft
working cam 516 actuating the transfer device,
18 actuates the fingers 544.
no narrowing operation takes place, i. e, the cam
shaft 18 is not shifted. When the roller 514 co
operates with the round cam` 513 holding the
tatably and shiftably mounted on the roller lever
548 may be pressed against the projections 564
transfer device in neutral position, shifting move
ments of the cam shaft 18 for narrowing opera
tions occur. Therefore, the round cam 518 is
broader than the roller 51'4, so that the latter `also
remains in engagement with the round cam dur
ing narrowing operations.
It is obvious that the '
swinging movements imparted to the roller lever
512 by the worlnng cam 516 are transmitted to
the gear segments 5111 through the medium of
the shaft 32. The forked lever 520 causing the
shifting of the roller 514 from the round -cam
518 to the working cam 516, is keyed to the con
trol rod 34, which alsopcarries, as described above,
the forked lever 236 (Fig. `6) for the shifting o-f
the roller 225 of the roller lever 224 causing the
high and low knocking-'over as well as the forked
lever 88 (Fig. 7) for the Vshifting of the roller ‘18
of the press arm '14. As best 'shown in Figs. 1_4,
a iiange 522 is provided, which serves to render
a shifting of the roller 514 from the round 'cam
518 to the working cam 516 and vice versa possi 40
ble only at a certain predetermined moment. For
The roller 552 ro
and 565 of the cam 554 by means of the tension
spring 556 connected to the extension 558 of this
roller lever. The lever 548 is loosely and rotat
ably mounted on the shaft 32 and is rigidly con
nected to the finger levers 544 by means of a con
necting rod 553 (Figs. 1, 2, 4, 6, 7, 9, and 10).
Thus, when the roller 552 comes in engagement
with the projections 554 and 555, the fingers 544
are swung. The roller 552, however, cannot come
in engagement with the round portion of the cam
554, because, when the strong spring 556 lowers
the roller lever 548, its extension 558 at first abuts
against a rod 562 attached to the machine frame.
The space thus obtained between the round por
tion of the cam 554 and the roller 552 renders
possible a shifting of the roller 552 by means of
the forked lever 551) without any obstruction by
the spring 556 at the predetermined moments.
Like the forked lever 523 and the forked levers
one place 524 (Fig. 4), i. e. the place where the
235 and 38 (Figs. 6 and 7) the forked leverl 560 is
keyed to the control rod 34 already mentioned
When, after the pressing 01T of a finished
stocking blank, the operation of the transfer
4device shall be automatically started for the
working cam 5&5 and the round cam 518 are of ,
transfer of a new, prefabricated stocking blank
the same height and the shifting of the roller 514
by means of the forked lever 520 takes place in
on to the needles of the machine, the narrowing
jack lever '1121) (Figs. 2 and 8) is lifted-by a
button '113 arranged on the narrowing chain
'105. The narrowing jack lever '112‘b is con
nected to one end of a link 745, the other end of
which is connected to a lever '142 rotatably
mounted on the pivot 143. The lever '142 has a
forked end engaged with the control rod 34.
this purpose the flange 522 has Ia recess vonly at
a manner to be described later on. Furthermore,
at this place 524 the round cam 518 has a small
indentation, by means o-f which the height of its
circumference is reduced to a small degree, and
at this place 524 the roller 528 -cooperating with
the auxiliary cam 530 becomes active, so that,
when the roller 514 is opposite to the place 524,
the roller 514 is spaced to a small degree from
the round cam 518 or the cam 5115 respectively.
This space is necessary, in order to obtain an easy
shifting of the roller 514 by means of the forked
lever 520 and to prevent the roller 514 from be
coming pressed against the round cam 51S or
the cam 52B by the strong spring 526 `during the
shifting. Fig. 4 shows the roller 514 in contact
with the highest point of the working cam 516
rotating in the direction of the arrow N. When
the roller occupies this position, the gear seg
ment 510 is swung to the furthest extent in coun
ter-clockwise direction as seen in Fig. 4, so that
the support 560 with its gripping latches 538 is
in its lowermost position. The cam 516 has a
second high point 532, in which again the grip
Thus, the narrowing jack lever '112D tends to
move the control rod 34 in the direction of
the arrow Q (Fig. 2) When the narrowing jack
lever is lifted. The narrowing jack lever '112D
is, however, actuated at a moment in which the
control rod should not yet be moved. The move
ment of the control rod must be timed in such a
manner, that during the period in which the
main cam shaft makes a full revolution the
transfer device has suiiìcient time to bring the
transfer bar from the supply table to the nee
dles, to transfer the loops at the proper moment
to the needles and to move the transfer bar away
from the needles again. Therefore, means are
provided by which, on one hand, the control rod
34 is moved in the direction of the arrow Q only
at a moment, when the main cam shaft 18, after
ping latches 538 are brought into the lowermost
70 the actuation of the narrowing jack lever 712D,
position. The position first mentioned, shown in
has been rotated through a certain angle lof about
Fig. 4, is the position in which the gripping
¿200 to 3D0 degrees, and, on the other hand, the
latches 533 deposit an empty transfer bar on the
'control 'rod 34 is returned into its starting posi
turn table 581). '_The second position mentioned,
in which 'the roller 51‘4 contacts the ‘point 532
tion in a direction opposite to the'direction of
the arrow Q only at a moment, when, after a
Без категории
Размер файла
2 764 Кб
Пожаловаться на содержимое документа