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Патент USA US2106434

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Jan- 25, 1938;
J. MORT-ON ET AL
'
'~2,106,434.
KNITTING MACHINERY
Filed Nov. 12, 1936
4 Sheets-Sheet 1
1.
Fig.
A
Jami-25,1938.‘
_
J. MORTON ETAL
I
2,106,434.
KNITT ING MACHINERY
Filed Nov. '12, 1956
I
4-Sheets-Sheet 2' '
.
A
OBNEYS
Jan. 25, 1938.
J. MORTON ET AL
2, 106,434
KNITTING MACHINERY
Filed No_v. 12, 1956'
‘v 4 Sheets-Sheet 3
umw
Wm
Fm
GHQ/WM,mm.“
/./X_
)
_. mm
ME
“M
V17 ‘
momiws,
Jan. 25, 1938.
’
.1. MORTON ET AL
2,106,434
KNITTI'NG MACHINERY
Filed Nov. 12, 1936
4 Sheets-Sheef 4
INVENTOKS
177027-04’
BY 775.52 ??mm/
ATTORNEYS
Patented Jan. 25, 1938
’ 2,106,434
UNITED STATES
PATENT OFFICE 7
2.106.434 '
xmrrme mommy
James Morton and 1mm Stewart Erskine Hi..
my, 031M810,
1881811013 in F. N- F
Limlted, Purley Way, Croydon, England, a
_ British company
.
Application November 12, 193s, Serial No. 110,540
-
In Great Britain February ,21, 193$
,
13 Claims.
This invention .relates to warp knitting ma
(01. 66-86)
is employed; the patterning motions of the bars.
chines and particularly to patterning mechanism may take place individually and selectively, while
for such machines.
.
‘In a warp knitting machine, as usually con
5 structed, the warps are led to the knittingneedles
by warp guides. These warp guides are usually
mounted side by side in groups, or so-called “sec-_
tions”, and each section is attached to a carrying
. bar usually called a “guide bar”.
One or more
the rocking motions take place in unison.
-
4
In certain warp knitting machines, pattern cam
wheels are provided which are driven intermit- 6
‘tently. _ This arrangement allows substantial
room atthe circumference of each wheel for the
active "cam formation.‘ However, such an inter-
mittent drive, owing to the recurring starts-and
10 such guide bars may be provided in the machine, stops involved with consequential high inertia 1o
according to the nature of the work that the ma
force's,'cannot practicably be operated at high
chine is intended to perform, and several of the speeds. Thus, usually, the patterning mechanism .
aforesaid sections are attached to the guide bar of a high speed warp knitting machine comprises
‘ or to each guide bar. The guide bar or each guide
15 bar is arranged to undergo two kinds of motion,
namely, a rocking motion about a longitudinal
axis extending within or outside the guide bar,
which results in the warp guides being moved to
and fro in planes between the knitting needles,
20 and endwise patterning or “shogging” motion
along or parallel to the said axis, which results in
the warp guides being moved to and fro parallel
to a plane containing the knitting needles. The
e?ect of these ‘two motions is to lap the warps or
selected warps on the needles. The present in
' vention has particular reference to mechanism for
imparting this patterning motion to the guide
bar or bars in a warp knitting machine.
.
The patterning motion of a guide bar in a warp
30 knitting machine serves two functions. The ?rst
of these functions is the bringing of the threads’
across the needles in a predetermined direction so
a single pattern cam wheel or cam chain for each
guide bar, the cam member being continuously '15
driven. In attempting to obtain very high speeds
of ‘operation in warp knitting machines, it is
found that the operation of the patterning mech
anism in the usual manner constitutes a limit
ingfactor. This is due to the fact that in order ~20
to impart, a comparatively long patterning move
ment to a guide bar, the cam enlargement or other
active formation occupies a substantial length of
the cam member, with the result that the number
of displacement effecting formations available on 25 Y
a given size of cam wheel is undesirably small, or
in the case of a cam chain the additional length
and necessary increased strength render it un
wieldy and prevent its use at very high speeds.
higher speeds than heretofore, without detract
that the needles may draw the loops in the
threads, and the second function is the selective
35 association of the several threads with needles
selected in accordance with a predetermined pat
tern. Thus, one component of the patterning mo
ing from the uniformity of motion or the general
tion of a guide bar may result in a warp guide car
rying its respective warp over a certain needle so
40 that the needle can drawa loop in ‘the warp and
ber interposed between said cam member and said
another component of the movement of the warp
guide may result in the warp being carried to an
other needle over which the warp is eventually
carried, so that a. loop in the warp is drawn by
4;, that needle. vIn this case the warp is formed into
a stitch on one needle during one cycle of move
_
The invention aims at providing patterning 30
mechanism adapted to operate the warp‘guides at
efficiency of operation of the warp guides.
_
_ One object of the invention consists in a pat- 35
terning mechanism comprising in combination a
cam member, a guide bar, an intermediate mem
guide bar, supporting means for said intermediate ‘
member, adapted to permit movement of the lat- 40
ter in two intersecting paths, said cam member
being operative to impart movement in one of
said paths ‘to said intermediate member and the
latter being operative when ‘so moved to impart '
movement to said guide bar, and means operative 45
to impart movement in the other of said paths to
said intermediate member, the latter being ar
ment of the needles, and then during a subsequent
cycle of movement of the needles it is formed into , ranged,_when moved in the last-mentioned path,‘
a stitch on another needle displaced from the to effect a movement of said guide bar separate
50 ?rst needle rby one or more needle pitches, the from or in conjunction with that due to the move-v 50'
second stitch being in a‘ different row to stitches in ment of‘said intermediate member in said ?rst
the fabric being formed. The warp may then be
~ carried back to the ?rst needle or it may be car
mentioned
Another object
path. of the
_
invention consists in pat' '
ried to another needle according to the pattern
55 that is desired. When more than one guide bar
terning mechanlsm'comprising in'combination a _
wedge member, supporting'means for said wedge '55
2,100,434.
. member adapted to permit movement of the latter
in the path of movement of the guide bar and in
a second path which is transverse to said ?rst
mentioned path, means for moving said wedge
understood and readily carried into effect, two
constructions in accordance therewith will now
be described, by way of example, with reference
to the accompanying drawings, in which:—
member selectively and periodically in said paths, _ ‘ Figure 1 is a sectional plan of patterning
said wedge member being formed with an inclined mechanism involving the use of a pattern cam
surface operatively associated with said guide bar and a knitting cam for each of a plurality of
and arrranged, when said wedge member, is moved guide bars, only a portion of each cam being
in said second path, to impart longitudinal move
shown;
'
'10 ' ment to the guide bar, while said wedge member
Figure 2 shows a constructional detail, viewed
is arranged, when moved in said first-mentioned in the direction of the arrow 11 in Figure 1;
Figures 3 and 4 respectively, are views (with
path, also to impart longitudinal movement to the‘
guide bar.
'
~
‘parts broken away) in the directions of the ar
A further object of the invention consists in rows III and IV of Figure 1, ‘these views being
'15 patterning mechanism comprising in combination drawn to a smaller scale than Figure 1;
Figure 5 is a sectional view of a portion of Fig
a tappet mounted for longitudinal movement, a
ure 4, Figure 5 being drawn to substantially the
second tappet mounted for longitudinal move
ment in a path which is transverse to the path same scale as Figure 1:
Figure 6 is a diagrammatic plan of a modi?ed
of movement of .said ?rst-mentioned tappet, a
construction of patterning mechanism; ant?
20 knitting cam arranged to ‘impart longitudinal
Figure 7 is a detail view taken in the direction
of the arrow VII in Figure 6.
movement to said ?rst-mentioned tappet, a pat
tern cam arranged to impart longitudinal move
Referring ?rstly‘ to Figures 1 to 5, the pat
_ ment, to said‘ second-mentioned ‘tappet, and
tappets and imparting the integrated movement
terning mechanism therein shown includes a pat
tern cam l0 and a knitting cam II for each
to the guide bar.
guide bar l2, there being three guide bars in the
means for integrating the movements of said
to
'
I
'
'
Yet another object of the invention consists in ‘ warp knitting machine whose patterning mech
patterning mechanism comprising in combination anism is shown. The cams are constituted by
a cam, an intermediate cam follower through‘ cam wheels which are rotated at constant speed,
the medium of which said cam is operative to act . the assembly of knitting cams being ‘driven at a 30
greater rotational speed than the,vassembly of
upon said guide bar to impart movement to the
latter, and means for moving said follower to
and fro in a direction transversely to the direc
tion to which movement is imparted by said cam
pattern cams. In the example shown the speed
of the former is twice that of the latter, but the
to said guide bar,- whereby the rate at which
number.
speed ratio, may be three or four or any whole
The driving mechanism comprises a ‘
power-driven worm shaft It, a worm l4 thereon
meshing with a worm wheel, II on the pattern
movement is transmitted from said cam to said
. guide bar is varied. .
The term “cam" herein used is intended to‘ cam shaft I6, and another worm I1 meshing with‘
‘cover and include any cam or-other equivalent a worm wheel l8 on the knitting cam shaft is. A
stationary casing 20 is disposed between the pat 40
40 device for imparting a predetermined succession
tern cam i II and the respective guide bar. In this
casing are-mounted three superposed assemblies
of motion-transmitting parts, each of these as
semblies including a tapped; 2| co~operating with
the pattern cam, a tappet 22 arranged at right
angles to the ?rst-mentioned tappet and co
operating with the knitting cam, and a tappet
of movements to a guide bar in order to effect the
patterning.
_
When mechanism according to the invention
comprises two cams, these are arranged to move
in timed relationship and one of the cams, name
ly, the knitting cam, maybe arranged to impart
_for every stitch formation a short motion of the
- extent of a knitting needle pitch, while the other
cam, namely, the pattern cam, may be arranged
to impart a predetermined sequence of motions
of extents according to a predetermined pattern.
‘By virtue of the invention, patterning mecha
nism for a warp knitting machine may include
cams formed with enlargements ‘or lobes which
are not unduly steep and arranged so as to dis‘
place their associated members at high speed to
any extent that is desired in practice.
_
I
More particularly de?ned, the invention con
23 arranged opposite to and in alignment'with
the tappet 2| and co-operating with an adjust
able abutment 24 on the ‘respective guide bars.
These tappets consist of rods slidably mounted in
the casing and rollers at opposite ends of the
rods, except that the tappet 23 has no roller at
the end whichcontacts with the aforesaid abut
‘ment. Each assembly of motion-transmitting
parts also includes a pivotal member 25 which is
carried between centre screw pins 25b and which
bears against the tappet 22 of the knitting cam.
sists in patterning mechanism comprising in eom- . The pivotal member has a convex track 25a (Fig
to
bination a pattern controlling member arranged
to undergo continuous movement during the on
eration of the machine, a stitch controlling mem
ber arranged to undergo continuous movement
during the operation of the machine. and a mem
as ber which is operatively associated with the warp
guides and is arranged to be caused jointly by
said pattern controlling member and said stitch
ure 5) against which bears a-concave roller ‘26 60
on a wedge-shaped block 21. This block is main
tained in engagement with its track by a resilient
thrust device comprising another roller 28, which
bears upon the interior of the casing 20 and has
a mounting 28 in telescopic relationship with
the block, and a compression-spring 30 disposed
between the mounting 29 and the block. The
pivotal member 25 constitutes, in effect, a motion
whereby'said guides are caused to undergo the " multiplying lever‘, which receives its motion from
controlling member to undergo cyclic movements
70 lateral movements necessary for stitches to be
,formed on selected needles.
_7
,
_
‘
the knitting cam tappet 22 and imparts such mo
70
tion, multiplied, to the block 21. ' The opposed
The invention further comprisesthe‘ elements wedge faces of the block 21 bear against the op
posed tappets 2 I, 22 of the pattern cam and of the
and combinations of parts set forth‘ in the an
I guide bar, these faces and tappets being kept in
nexed claims.
In order that the invention may be clearlyI inter-engagement by the guide bar's return spring 75
2,108,484:
3|, which acts through a chain 32 round a pulley
33 (Figures 1 and 2).
'
The arrangement of each of the three super- ,
3
two given cams can ‘be varied by adjusting the
angular or phase relationship between the cams.
Referring now to Figures 6 and '7, the modi?ed v
posed assemblies is such that, on actuation only construction of patterning ‘mechanism therein '
of the tappet 22 of the knitting cam, the block 21 diagrammatically illustrated involves the use of
I is forced, through the intermediary of the piv
a cam 40 for the guide bar (or foreach guide
otal member 25, to move wedge-wise between the bar) of a warp_ knitting ‘machine.
‘
A cam follow»
opposed tappets 2|, 23. Since, as regards the er consisting of a member 4| and roller '42 there
tappets 2| and 23, the former is prevented by its on is interposed between the cam and its tappet,
10 cam ID from moving under the wedge action, the. which consists of a roller 43 on a member 44 10
tappet 23 alone is moved and accordingly forces operatively associated with the guide bar and
the guide bar l2 to move with it.
On actuation
adapted to impart patterning motion thereto,.di
of both tappets 2|, 22 by their cams, the move . rectly or indirectly. The member 4| extends be‘
ment due to the pattern cam is added positively yond the cam .40, and the roller 42 rides upon the
or negatively to that due to the knitting cam, the cam face. The follower member 4| presents a
sum of these movements being imparted to the ‘ curved’surface 4|a which is substantially con
.guide bar.
, centric with the cam 4|),v and upon this surface
The function of each knitting cam H is to im'
bears the roller 43 of the tappet. The member
part, for every stitch-formation a short lateral
motion of the extent of a knitting needle pitch.
4| has pin-and-slot connections at 45' with an
arm 45 which is journalled on the cam shaft 46 -
Owing to the wedge faces of the block 21 being
limited in length, there is a limit to the number
and is pin-connected to a rod 4'|,_which imparts
to the arm 45 and follower 4|, 42 a to-and-fro
motion transversely of the'line of action between
of times in succession that a movement in a given
direction can be effected if the cam || only were , the cam 40 and the tappet 43, 44.
The rod v4‘| ’
to act. If it is desired to continue the movement
beyond this limit the block 21 must be returned
to the starting position, compensation being pro
receives the requisite motion, in the construction
shown, from an eccentric 48, which is keyed, to
vided by a suitable step on cam III.
nism consisting of an eccentric rod 50 and a bell
crank lever 5| having a stationary fulcrum at
52. The cam shaft 45 is continuously rotatable
This oper- .
a shaft 49 through the intermediary of mecha- '
ation of returning the block 21 is most con
veniently performed during that part of the cycle
during which cam | 0 is normally operative.
. from the shaft 49 through the intermediary of
The function of each pattern cam I0 is to im
part at regular or irregular intervals variable or
a worm shaft 53 which is connected to the shaft
49. through bevel gear wheels 54 and to the cam
constant motions of the extent of any number of shaft 46 through worm gearing ‘55. In the con
needle pitches, said intervals and extents being struction shown, the gear ratio is such that the
predetermined according to the pattern. That ‘pattern cam 40 turns through one ‘revolution
is to say, the vwarp threads guided by the respec
while the eccentric 48 turns through twenty-four
tive guides 34 are displaced from one needle
revolutions; that is, twenty-four stitches are
across one or more‘adjacent needles for engage
knitted per revolution of the pattern cam. The
cam shown is adapted to shog the guide bar reg 40
ularly to and fro across two knitting needles.
40 ment thereby during the next stitch~forming
operation.
.
'
'
Thus, each knitting .cam H, which, as pre
viously mentioned, rotates faster than ‘its asso
ciated pattern cam It), gives effect to the knitting
“shog” of the‘ corresponding guide bar, i. e. the
shog which results in the warp threads being car
* _ The timing of the eccentric .48 in relation to‘
ried over their needles and which has to take
largement.- Meantime, the follower 4|, 42 slides
along the guide slots in its carrying arm 45, ?rst
place very quickly indeed. Further, the pattern
cam I0 gives effect to the pattern shog of the
the cam 40 is such that when’a cam enlargement
is passing the roller 42 of the follower, the eccen
tric acts to move the follower around the cam 40
in the direction opposite to the motion of the en
away from and then towards the cam axis, and
guide bar, i. e. the shog which results in the warp > transmits the requisite motion to the tappet 43,
threads being carried under the ‘needles ‘and 44 across which the follower-slides. ‘The follower 50
which has a longer time available for it so that it is given its return movement" after the enlarge- '
can be provided for by a reasonably shaped step ment has passed beyond it.
on the pattern cam; It will be understood that ‘
.It will be clear that, in the construction ac
one step or lobe on a knitting cam always corre
' sponds to a shog across one needle asfit is never
cording to Figures 6 and 7, provision is made
whereby the cam 40 can impart a quick move
necessary to carry each warp over more than one
ment of substantial length without involving the
needle.
use of a cam enlargement, or other follower-dis
On the other hand, .a step or lobe on a
pattern cam may correspond to a shog of several jplacing formation, which is undesirably steep.
60 needles, as maybe required by the patterning
The need for some provision (or for some. alter
designer. By providing in this way the cam NY native provision) will be manifest if one were to
to deal solely with the short, regularly and quick
suppose, for example, that there _is one inch of
ly recurring knitting motions and the separate
the periphery of a cam Wheel available per cy
slower speed cam ill to deal with the variable
irregular pattern motions, reasonable arcs are
available on both the knitting cam and the pat
cle, and that during the cycle the wheel is re->
quired to move its tappet or other follower to the 65
extent of 11; of an inch. .Owing to knitting and
tern cam for the bar-displacing formations there- '
otheroperations, however, the whole of the cycle
on, and theseiormations can be designed with
is not free for this movement, an angle of about
30 degrees only being available during ‘which the movement must take place. An angle of 30
degrees, if the wheel is rotating at constant
tappet displacing surfaces, which 'are not unduly
steeply inclined.
_
The provision of both cams ||l andv ||, each of
which is, as usual, interchangeable with any other
appropriately designed cam, affords a wide variety
of patterning motions. An additional advantage
der consideration, i. e. 115 of an inch. That is to
say, the shape of the cam must be such that a rise
is that the patterning motions derived from any
of 11;. of‘an inch takes place in-a length of I‘,
speed, represents 30/360 inch in the example un
2,100,484
' of an inch.
steep.
Such a shape would be undesirably
.. a
[If th'” construction according to Figures 6 and '7
\were applied to the foregoing suppositious ex
mpleuthe cam follower 4|, 42 could be moved at
;_ ucna rateas to spread the period of cam opera
V‘tion?over approximately 1/6 of an inch, in which
through said member, means for rotating said
member about said axis at constant angular ve
locity, a cam follower operatively associated with
the guide bar, a guide member for said cam fol
lower arranged to permit said cam follower to be
moved to and fro under the control of said cam
surface, the arrangement being such that the to '
and fro movements are imparted to the guide
event the cam enlargement would be a- compar
ativeli’ gentle rise of 1*‘ of an inch in a length ‘of ' bar, and means forimparting to said guide mem
10] .% of an inch.
ber oscillating movement in an ‘arcuate path 10
‘ It will be clear that an arrangement such as
about said axis so that the angular movement
_.illustrated by Figures 6 and 7 ‘can either be em
of said rotatable member relatively to said cam
'bodied in an arrangement including also a “knit
ting” cam such as illustrated by Figures 1 to 5,
in which event the cam 40 and tappet “ corre
spond to the cam l0 and tappet 2|, or can be
used as the sole means of effecting the shogging
motion of the guidebar, in which event the tap
pet 44 corresponds to the tappet 23.
20
It is to be understood that the constructions
illustrated are examples embodying the inven
tion hereinafter claimed, and that modi?cation
within the scope of the claims can be made. For
example, as regards the construction illustrated
25 by Figures 1 to 5, the wedge device can be re
‘ placed by an equivalent device, such as a toggle
follower is of a ?uctuating nature.
_
4. Mechanism for imparting patterning mo
tion vto a longitudinally movable guide bar in a
warp knitting machine, said mechanism compris
ing in combination ayrotatable member formed
with a peripheral cam surface and arranged to
rotate about a fixed axis passing through said
member, means for rotating said member about 20
said axis at constant angular velocity, a cam fol
lower operatively associated with the guide bar,
a guide member for said cam follower arranged
to permit said cam follower to be moved to and
fro under the control of said cam surface, the ar
rangement being such that‘the to and fro move
linkage, the toggle links being connected at their _ ments are imparted to the guide bar, a second
distal ends to the tappets 2|, 23 and having a rotatable member operatively connected to said
roller or rollers at their proximal ‘ends corre
guide member and arranged, when rotated, to im
30 sponding to the rollers 26. As regards the con;
part to said guide member oscillating movement 30
struction illustrated by Figures 6 and?, a cam in an arcuate path about said axis so that the an
may be used in place of the eccentric 48,- which
cam can be proportioned so as to enable the
period of cam operation in the foregoing:sup-‘
35 positious example, to be spread over the entire
,member at constant angular velocity.
5. Mechanism for imparting patterning motion
cycle. distance of one inch. Further, the eccen
tric 48 (or corresponding cam) can be geared
to the cam shaft 46 to turn at a rotational speed
any required number of times faster than the
40 speed at which the cam shaft is rotated.
We claim:-
gular movement of said rotatable member rela
tively to said cam follower is of a ?uctuating na
ture and means for rotating said second rotatable
'
1..Mechanism for imparting patterning mo
tion to a guidebar in a 'warp knitting machine,
said mechanism comprising in combination a
to a guide bar 1!? a warp knitting machine,'said
mechanism comprising in combination a member
formed with a cam surface and mounted for
movement, a cam follower interposed between 40
said member and the guide bar and mounted for
movement in two intersecting paths, one of said
paths being along said cam surface and said
member being adapted to impart movement to
45 cam, an intermediate cam- follower through the ‘the guide bar by moving said cam follower in the
medium of which said cam is operative to act other of said paths, and means for moving said
upon the guide bar to impart movement to the
latter, and means interconnecting said cam and
said follower for moving simultaneously in timed
50 relation with said cam said follower to and fro
in a direction transversely to the direction in
which movement is imparted by said cam to the
guide bar, whereby the rate at which movement
is transmitted from said cam to the guide bar is
55
varied,
~
'
-
2. Mechanism for imparting patterning mo
tion to a guide bar in a warp knitting machine,
said mechanism comprising in combination a
member and for simultaneously moving said cam
follower along said cam surface.
6. In mechanism for imparting patterning mo
tion to a guide bar in a warp knitting machine, 50
the combination of a cam shaft, a cam follower
mounted for oscillation about the axis of said
cam shaft and for radial reciprocation relatively
to said axis, and means for imparting continuous
rotation to said cam shaft and simultaneous os
55
cillation of said cam follower about said axis. '
7. Mechanism for imparting patterning motion ‘
to a guide bar in a warp knitting machine, said
mechanism comprising in combination a cam
terposed between said cam and the guide bar, mounted for rotation about a ?xed axis and 60
a support for said cam follower arranged to per-_ formed with a cam surface comprising circumfer
mit movement of said cam follower towards and ential portions and inclined portions, a cam fol
away from said axis and about said axis, said lower mountedin engagement with said cam sur
.cam rotatable about‘ an axis, a cam follower in
cam follower being arranged to be moved by
85 said cam towards and away from said axis and
to impart such movements to the guide bar, and
means for moving‘ said‘ cam follower about the
axis of said cam whereby the action of said cam
on the guide bar is varied.
70
-
3.‘Mechanism for imparting patterning mo
tion to a longitudinally movable guide bar in a
‘warp knitting machine, said mechanism com
prising in combination a rotatable member
face and adapted to be both oscillated about said
axis and reciprocated towards and away from 85
said axis, said cam follower being operative when
r'eciprocated as-aforesaid to impart equivalent
movements to the guide bar, means for imparting
uniform rotary motion to said cam, and means
for oscillating said cam follower about said axis 70
so that the effective steepness of said inclined
portion of said cam surface is varied.
8. Mechanism for imparting patterning mo
formed with a__perlpheral cam surface and ar- ' tion to a guide bar-in a warp knitting machine,
1 76
.ranged to rotate about a fixed axis passing
said mechanism comprising in‘ combination a
5
2,106,434
cam rotatable about an axis, a cam- follower in
I terposed between said cam and the guide bar, a
a support forsaid cam follower mounted for oscil-.
lation about said axis and arranged to permit
movement of said cam follower towards and away
from said axis, said cam follower being adapted
for movement by said cam towards and away
from said axis and adapted to impart such move
710
ment to the guide bar, and means for moving said
support about said axis whereby the action of
said cam-on the guide bar is varied.
said mechanism comprising in combination a ro
tatable member formed ‘with a peripheral cam
surface and arranged to rotate 'abouta-?xed axis
passing through said member, means for rotating
said member about said axis at constant angular
velocity, a cam follower including both a mem
Ber, formed at one end with an arcuate surface
having its centre in the vicinity of said axis, and
a roller mounted in contact with said cam sur-‘
face at the end of said follower member remote 10
9. In mechanism for imparting patterning mo
tion to a guide bar in a warp knitting machine,
from said arcuate surface, a tappet for transmit
ting reciprocatory motion to the guide bar, said
tappet, including" 'a roller contacting with said‘
the combination of a cam rotatable about an axis,
arcuate surface, a support for said cam follower
a tappet mounted for reciprocation towards and
away from said cam and adapted to transmit re
mounted for oscillation about said axis ' and 15
adapted to permit said cam follower to be'moved
ciprocating motion to the guide’bar, acam fol
towards and away from said axis by said cam
lower interposed between said cam and said tap
surface to impart reciprocatory motion to said
‘pet, a support for said cam follower arranged to '
20 permit movement of said cam follower towards 'tappet, and means for imparting continuous os
cillating motion to said support about said axis.
and away from said axis and about said axis, said‘
12. Mechanismfor imparting patterning mo
cam follower being adapted for movement by said tion to a longitudinal movable guide bar in a
,' cam towards and away from said axis and adapted warp knitting machine, said mechanism com- '
to impart such movements throughsaid tappet
25 to the guide bar, and one of the pair of mem
bers constituted by said tappet and said cam fol
lower being formed with an arcuate surface‘havé
ing its centre in the vicinity of said axis while
the other of said pair of members is adapted to
30 make line contact with said ‘arcuate surface.
10. Mechanism for imparting patterning mo
tion to a guide bar in a warp knitting machine,
said mechanism comprising in combination a cam
rotatable about an axis, a tappet mounted for
35 reciprocation towards and away from said cam
for transmitting longitudinal movements to said
guide bar, a cam follower adapted to make roll- '
ing contact with said cam while said tappet is
adapted to make rolling contact with said cam
40 follower, a support for said cam follower arranged
to permit movement of said cam follower towards
and away from said axis and about said axis,
said cam follower being adapted for movement
by said cam towards and away from said axis to
45 impart to and fro movement to said tappet, and
means for moving said cam follower about said
axis whereby the action of said cam on the guide
bar is varied.
-
'11. Mechanism for imparting patterning mo
50 tion to a guide bar in a warp knitting machine,
prising in combination a cam mounted for r0ta-"
tion about a ?xed axis, a cam follower in contact
with said cam for imparting longitudinal move
ments to the guide bar under the controlof said
cam, a support for said cam follower mounted for
oscillation about said axis and adapted to permit
said cam follower to be moved towards and away 30'
from said axis under the in?uence of said cam,
and means for imparting simultaneously and con
tinuously rotary motion to» said cam and oscil
lating motion to said support.
I
13. Mechanism for imparting patterning mo-'
tion‘ to a'longitudinal movable guide bar in a
warp knitting machine, said mechanism com
prising vin combination a cam mounted for rota
tion about a ?xed axis, a cam follower in contact
with said cam for imparting longitudinal move
ments to the guide bar under the control of said 40
,
cam, a support for said cam follower mounted for
oscillation about said axis and adapted to permit
said cam follower to be moved towards and away
from said axis under the in?uence of said cam,
means for imparting uniform rotary motion to
said cam, and means including an eccentric for
imparting oscillating motion 'to said support.
JAMES MORTON.
,
ROBERT STEWART ERSKINEHANNAY. I
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