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Патент USA US2105444

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Filed Nov. 4, 1956
4 Sheets-Sheet 1
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Jan. 11,1938.
Fiied Nov. 4, 1936
4 Sheets-Sheet 2
Jan. 11, 1938.
Filed NOV. 4, 1936
4 Sheets-Sheet 3
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’ Jan. 11, 1938.
Filed Nov. 4, 1936
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~ 4 Sheets-Sheet 4
‘Patented Jan. 11; 1938’
screams MEANS roa xm'r'rmo maca
Paul Schmidt, Wyomisslng, Pa, assignor to Tex
tile Machine Works, Wyomissing, 2a., a cor
poration of Pennsylvania
Application November 4, 1938, Serial No. 109,086
'8 Claims.
(01. 66-129)
. _My invention relates to novel mechanism for without limiting the invention in its useful appli
cations to the particular constructions which for
operating elements of knitting machines at dif
ferent speeds, and particularly to mechanisms for the purpose of explanation are made the sub
operating friction boxes by friction rods at di?er- ' ject of illustration.
In the drawings;
CI ent speeds in a straight machine 'for knitting a
Figure 1 is a 'view, iii rear' elevation, having
distance breaks, of portions of a full-fashioned
full-fashioned stocking blank or the like.
,In amachine for knitting full-fashioned stock
knitting machine embodying the invention, ele
ing blanks, certain yarn carriers operate to lay
ments being broken away and omitted;
Fig. '2 is an enlarged view, taken along the 10
,. ground yarn entirely across the blanks, and others
10 ‘to lay additional yarns for short distances over,
or with, the ground-yarns, as in the heel areas
line 2-2 of Fig. 1, parts being omitted;
Fig. 3 is an enlarged detail plan view oflfric
to reinforce the blanks at these locations‘; these
carriers all being operated by one friction rod. ' tion box and carrier bar portions of the machine,
substantially as viewed in the direction of, and
between, the arrows along a line 3-8 of Fig. 1; 15
Thus, in-knitting a blank to have double-yarn
heel areas, at least three yarn carriers are re
‘ Fig, 4 is a view taken along the line 4-4 of
quired, one to lay the full courses and two to lay
. the heel reinforcing yarns.
Fig. 3;
- reinforcements.
Fig. 5 is an enlarged view, taken substantially
along the line 5-5 of Fig. 1;
Fig. 6 is a view, partially in elevation and par- 20
tially in section, of a portion of the structure of
In a ringless stocking having this double-yarn
heel reinforcement, five carriers are employed,
with three for laying single yarns in sequence for
the full courses and two for laying the heel
Fig. 5, taken at right angles thereto; and
_ Fig. '1 is a diagram of portions of a full-fash—‘
' In knitting a‘blank to have triple yarn heel
ioned stocking leg blank, and of the adjacently
associated yarn-laying elements of the machine. 25
. ' areas, at least ?ve yarn carriers are required, and,
in a ringless stocking this-number is‘ increased
to seven; all operated by the one friction rod.,
In modern practice the machine is operated at
very high speeds, so that the heat of friction be
In practicing the invention, mechanism is pro
vided foroperating a knitting mechanism and a
vfull-coarse yarn carrier'in usual relation, and
tween‘the several friction boxes and the single
30 friction rod is substantially increased and has
simultaneously operating reinforcing carriers at
a reduced speed, such as half the speed of the 30
become a serious problem, with respect to which ‘ full-course carrier or carriers. This action is»
obtained by the use of a half-speed friction rod,
a number of remedies have been suggested.
which is auxiliary, or in addition, to a usual
Among the objects of my invention‘ are to re
duce the above-mentioned frictional heat and the friction rod of a full-fashioned knitting machine.
Further, means are provided whereby each of a 35
damaging resuits'thereof.‘
Another object is to provide a mechanism for
operating different elements of a knitting ma
chine at di?erent‘speeds by a mechanism of ma
_ - terlally enhanced simplicity'and reduction in the
40 number of its parts.
A further'object is toprovide a device of .the
above indicated 'characte that is durable in con
struction, economical to “ anufacture and'eifec
tive in its operation.
with these and other objects which may. be
incident to a utilization of the improvement, the
invention comprises the parts and combinations
thereof, which may be variedin shape, texture,
relation and other features, and the operation,
which may be varied, in- accordance with the
Q spirit and scope of the invention as hereinafter
set forth and claimed.
Although means are shown in the accompa
ing drawings for carrying the invention into prac
55 tical effect, these are merely by way of example,
plurality of yarn carriers may be connected either
to the usual friction rod or to the half speed
rod as desired.
Preferably, a simpli?ed speed-reducing mecha
nism is provided of the type disclosed and claimed 40
in the patent to Waechtler and Suess, No.
2,059,667, granted November 3, 1936 and having ‘
a reduced number of parts. Such mechanism has
a single coulier motion mechanism including only
one long or main rocker arm by which the main 45
‘or full-speed friction rod is- operated, and to
which‘ the above-mentioned reduced-speed fric
tion rod is directly connected independently of
the connection between the main friction rod and 50,
the rocker arm. The full and reduced speed fric
tion rods are connected positively to the rocker
arm. The ratio of theydi?erent speeds is adjust
able. These features severally and in combina
tion constitute means of materially advantageous 55
(‘character in the knitting art, but form no 'part ciprocably mounted in a member 51 with respect
of the present invention.
The figures exemplify the elements of the in
vention, and also only such elements of a “Read
ing” full fashioned knitting machine as neces
to which it is prevented from turning by a pin
and slot device 56. A spring 59 operates between
the plunger 54 and a bridge 62, whichissupported
by a pair of bolts 63 on the member 51, to bias
other members of the machine and the opera
the plunger 54'downwardly.
- sary to an understanding of the invention.
ings, the frame work or base support of a stand
ard full fashioned knitting machine therein in
blank S having reinforced heel areas L and R.
tion thereof are well known, as set forth in the
“Reading” Full Fashioned Knitting Machine
'10 Catalogue, copyright 1935, and published by the
Textile Machine Works, Reading, Pennsylvania.
Referring particularly to Fig. 1 of the draw
15 dicated, comprises center frames Ill and end
frames H rigidly positioned in spaced relation
by a front rail l2, aback rail l3 and a center
bed l4.
As indicated in Fig. 5, a positive connection is
provided, as'by a set screw 6|, between the re
duced speed friction rod 4'! and the connector
T to positively connect the rod 41 to the coulier
motion mechanism.
Fig. 7 illustrates one application of the inven
tion, in producing a full fashioned stocking leg
A coulier motion vmechanism C of well-known
type, comprises a draw bar or pitman IS, on
- which are mounted a pair of rollers I6 (only one
of which is shown) for cooperation with a coulier
cam H, to oscillate a small rocker arm (not
shown) and a large rocker arm l9. This mech
Three friction boxes 64, 65 and 66 are shown,
these boxes being identical except for a member
‘I6 on the box 64 to be thrown into and out of the
path of travel of the collars 46 on the shock re
ducer rod 45.
As better seen in Figs. 3 and 4, the box 65 is of 20
double box character surrounding the closely ad
jacent parallel main and auxiliary friction rods
.32 and 41, respectively, each half of the box be
ing like. a complete single box including the usual
anism operates to translate the rotary movement friction linings 1|, shoes ‘I2 and leaf springs 13,
but the box halves being distinguished by a cam
of the cam shaft ‘into the reciprocable move
ments of the yarn feeding and loop forming handle 15 on the full-speed half of the box, and
The rollers l6, adjustably secured to the draw
bar l5, cooperate \ivith the coulier cam l'l‘ to re
ciprocate the draw bar, which is pivotally con
nected at its ends to the small and large rocker
arms, respectively: The rocker arms are piv
otally mounted on brackets, which are mounted
35 on the back rail I3, one of these brackets 24 be
ing shown in Fig. 1, for supporting the large
rocker arm l9.
Reciprocation of the draw bar l5, oscillates the
a similar handle 16 on the reduced speed half of
the box. A usual slide bar 18 on the box 65 hav
ing a handle 19 is adapted for selective coopera— 30
tion with a dog 86 on any of the usual yarn-car
rier bars I to .8, inclusive, on each of which a
yarn-carrier or finger‘ is adapted to lay yarn to a
knitting head assembly K_ (Fig. 2) including the
usual needle bank 8|, sinkers, dividers and other
elements. The carrier bars are supported by sta
large rocker arm l9 about its lower end pivot, and
tionary brackets 82 on the center. bed l4, and
are provided with usual end stops S, Fig. 1. The
boxes 64, 65 and 66 are connected to carrier
40 reciprocates a cross head 21 through a. link 26, the
ends of which are pivoted to the large rocker arm
yarn-carrier ?ngers 84, 85 and 66, respectively.
l9 and to the cross head 21, respectively.
' cross head 21, which is ?xed to a full-speed fric
bars 4, 5 and 6, Fig. 7, on which are mounted 40
In this instance, .the boxes 65 and 66 are con- -
nected to the half-speed friction rod 41, and the "
tion rod 32, is carried by a slur cam connecting - box 64 is connected to the full-speed friction
45 rod bracket 29 that is slidably mounted on a rod 32.
stationary guide 36.
In operation, upon rotation of the coulier cam A bracket or pivot support B is slidably re
I ‘Lthe pitman l5 oscillates the rocker arm I 9
ciprocably mounted on a back narrowing shaft about its lower-end pivot, whereby the link 28
34 and comprises upper and lower portions36 ' at the upper end of the rocker arm, the slur cam
50 and 31 secured together, as by bolts or screws. connecting rod bracket 29, the cross-head 2‘I ,
The lower portion 31 has a depending arm 38
and the friction rod 32 are recip'rocated at the
having a vertical slot 39' therein in which a pivot , speed of substantially the fastest moving part of v
support 42 for one end of a link 43 is mounted the rocker arm through distances in accordance
for ?xed adjusted position in any'part of the ' with oscillation of the rocker arm between lines
3 55 slot.
The other end of the link 43 is similarly
a and b.
When both the high speed friction rod 32 and
. - The upper portion 36 of the bracket B rigidly
the low speed friction rod 41, are at the right
supports a connector device T for yieldably con
hand ends of their strokes, corresponding to the
necting to the coulier motion mechanism a shock position b of the rocker arm indicated in Fig. 1,
60 reducer rod 45 carrying collars 46, Fig. 7, and
with the ground yarn carrier rod 4 connected to GO
positively connecting a reduced-speed friction the friction box 64 operated by the high speed
rod 41 to the coulier motion mechanism. A sta
friction rod 32, and splicing yarn carrier rods 5
tionary rod 48, on which the connector T slides, - and 6 connected to friction boxes 65 and 66 op
is provided to support and prevent turning of erated by the low speed friction rod 41, these car
65 the connector about the main support on'the riers will start laying their yarns at the same (if
shaft 34. Also,-a slide guide 5|, Fig. 2, of fork . time, but, with the friction rod 32 traveling twice
shape secured to the arm 38 and embracing a as fast as the-rod 41, there will be a constantly
back catch-bar shaft 52 is vprovided to assist the changing relative speed between the carriers.
rod 48 to prevent turning of the connector T and ' Near the ends of the strokes, the member ‘HI
mounted in a slot 44 in the rocker arm l9.
the bracket B relative to the shaft 34.
As better-seen in Figs. 5 and 6, the connector
device T comprises a vertical plunger or detent
rod 54 having a. pointed or tapered lower end 55‘
for cooperation with‘ a notch 56 in the shock re
will engage one of the collars 46 on the half-speed ‘
shock reducer rod 45 whereby the box 64 will slip
relative to the high-speed friction rod 32 but will
be carried thereby at the reduced speed until the
carrier bars engage the end stops S. Upon'im
75 ducer rod 46. The plunger 64 is vertically re-' pact of m'ember "with a collar 46, the plunger 7
54 is momentarily lifted partially out of the notch
56 against the action of the spring 59 which
thereby absorbs the shock of this impact, and
yarn carrier means including yarn carrier bars
parallel to the needl'e'bank, means for actuating
the yarn-carrier bars including a plurality of
subsequently presses the plunger back into nor
mal position in the notch. At the ends of the
strokes of rods 32 and 41, the loops will be formed
to the carrier rods, a friction box including
friction rods longitudinally recipr'ocable parallel
in a usual manner, whereupon the return strokes
of the ground yarn carrier 4 and the splicing
yarn carriers 5 and 6 will take place.
Although as many yarn carriers may be em
ployed as in machines heretofore constructed, by
the arrangement in whichthe splicing carriers
are operated at only half the speed of the main
carrier or carriers, the heat of friction is' greatly
15 reduced and the ability of the machine to run at
high speed in more effective manner is materially,
enhanced. This feature marks a desirable ad
vance in the knitting machine art, and' ensures
the effective production of knitted fabric in ac
20 cordance with a principle which to the best of
my knowledge‘ has “not heretofore been known.
The improvement speci?cally shown and de
scribed, vby which the results are obtained, may
be modified in various ways, without departing
25 from the invention as set forth and claimed.
I claim:
1. In a straight knitting machine, loop-form
ing mechanism including a needle bank, yarn
carrier means including yarn-carrier bars par
30 allel to the needle bank, means for actuating the
yarn carrier bars including a plurality of friction
rods reciprocable at different speeds, and a single
friction box‘ for selectively connecting a carrier
bar to one or another of said friction rods.
2. A straight knitting machine comprising loop
forming mechanism including a needle bank,
means for selectively connecting it to one or an
other of said friction rods, and means for con-'
necting the frictionv box to one of the carrier
5. A straight knitting machine comprising loop 10
forming mechanism including .a needle bank,
yarn carrier means including yarn carrier bars
parallel to the needle bank, means for actuating
the yarn "carrier bars including a plurality of
friction rods longitudinally reciprocable at differ
ent speeds parallel to the carrier rods, a friction
box including means for selectively connecting it
to one or another of said friction rods, and means
for connecting the friction box to one of the car— 20
rier bars. Y,
6. A straight knitting machine comprising loop
‘forming mechanism includingv a needle bank,
yarn carrier meansincluding yarn carrier bars
parallel to the needle bank, means for actuating
the yarn-carrier bars including friction rods dis
posed in closely adjacent side-by-side relation
land longitudinally reciprocable at different speeds
yarn carrier means including yarn carrier ele
ments parallel to the needle bank, means for
actuating the yarn carrier elements including a
40 plurality of members reciprocable at different
speeds parallel to ‘the carrier elements, means
for adjusting the ratio of said speeds, and a
parallel to the carrier bars, a friction box struc- '
ture surrounding said friction rods, sets of fric 30
tion shoes and clamps carried by the box for
selectively connecting the box to one or another
friction rod, and means for connecting the box to
a carrier bar.
7. In a straight knittingmachine, loop-form
ing mechanism, a plurality of yarn carrier bars,
and ‘means for operating the bars, said means
includinga high-speed friction rod, a friction box
for connecting the high-speed friction rod to a
‘yarn carrier bar, a low speedfriction rod, and a
friction box for connecting thejlow-speed fric
tion rod to another carrier bar, one of said fric
single means for selectively connecting a carrier
tion boxes being selectively connectible to the
other of said friction rods.
element totone or another of said members.
3. A straight knitting machine comprising loop
forming mechanism including a needle bank,
yarn carrier means including yarn carrier ele—
ments parallel to the needle bank, means for
tion box units mounted on said rods for driving
said bars, each of said units having means for
actuating the yarn carrier elements including a
'50 plurality of members reciprocable at..di?erent
speeds ‘parallel to the carrier elements, and a
single means for selectively connecting a carrier -
element to one or another of 'said members.
4. A straight knitting machine comprising loop
forming mechanism including a needle bank,
8. In a flat knitting machine having a plurality
of knitting sections, in combination, a plurality of
friction rods operating at different speeds, a pin
rality of yarn carrier bars, and a plurality of fric
selectively establishing driving connection be
tween either of said friction rods and any of said
yarn carrier bars so that the latter may be oper
ated at different speeds relative to each other in
one or more sections of the machine.
Patent-No, 2,1054%.
January 11, 1958.
It is hereby certified'_ that error appears in the above 'numberfed patent
requiring correction es follows:v In the heading .to ?the drawings, Sheets
1 and 2, name of inventor, for "TQSCHMIDWread P. ‘SCHMIDT; and that. the
said Letters Patent should be read'with this correction therein 'thet the
same may conform to the record of the case in the Patent Office.
Signed and seaied this 29th day of March, A. In. 1958.
v ,
Henry- Van Arsdale,
Acting ‘Commissioner of Patents.
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