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Патент USA US2123534

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July 12, 1938.
R_ ‘H, LAWSON 51- AL '
Filed Aug. 3, 1935
7 Sheets-Sheet 1
By 5,2,7 7M
July 12, 1938.
R. H. LAwsoN'Er AL
Filed Aug. 5, 19:55
.7 Sheets-Sheét 2
‘ F105.‘
— — — — ~ — — — 4-1
By 62“, 517W
July 12, 19387
Filed Aug. 3,‘ ‘19:55
' 7 Sheets-Sheet s
July 12, 1938. ‘
R. H. LAWSON El‘ Al.
Filed Aug. 5, 1935 >
7 Sheets-Sheet 4
0L7 JrT’j/I
I July 12, 1938.
Filed Aug. 3, i935
7 Sheets-Sheet 5
July 12, 1938.
Filed Aug. 3,'l935
7 Sheets-Sheet 6
MLLJAML. 529175.723
BY 6*”
July 12, 1938.
Filed Aug. 3, 1935
7 Sheets-Sheet?
50355715!£ [II/1650A;
BY W”?
' Patented July 12, 1938
2,123,534 "
CAM mJocrr FOR KNITTING mcnmss
Robert H. lemon and William L. Smith, Jr.,
Pawtucket, R. 1., assignors to Hemphlll Gom
Pany, Central Falls, R. 11;, a corporation of
Application August 3, 1935, Serial No. 34,579 4
In Canada August 9, 1934
(01. 66-»57)
v _ This invention relates to cam blocks for hit
Fig. 22;
knitting machines. This case is a continuation
in part of U. S. application Ser. No. 706,082, ?led
sinker cam and sinker pressing cam;
Fig. 24 is a plan view of a modi?ed form of
of a cam block according to the invention;
Fig. 2 is a plan view corresponding to Fig. 1;
Fig. 3 is a section taken on the vertical center
line of Fig. 1', certain parts being .cut away for
purposes of clearness;
Fig. 4 is an elevation showing one side of the
mechanism shown in Fig. l-;
Fig. 5 is an elevation of the cam block showing
the inner side, the needle and jack cams mounted
same cams;
Fig. 8 is a sectional viewshowing part of the
knitting machine frame and a plurality of cam
25 blocks arranged thereon;
Fig. 9 is a plan view of the sinker cam assembly; I
Fig. 10 is a similar view, the cam retaining plate
being removed;
Fig. 26-ls an elevation showing in detail the
spring control for the pressing cam, this view
showing only the part of the assembly above the
reference line H in Fig. 24;
‘ I
Fig. 27 is a ‘detail view of the sinker cam ad
justing screw and partof its bracket; and
Fig. 28 is a detail of the sinker pressing cam
and the arm upon which it is mounted.
The cam block with cams shown in Figs. 1-15
through 16 is particularly adapted for use in
Fig. 11 is an elevation of the cam block show
and jack cams removed;
Fig. 12 is an elevation 01 the mechanism shown
in Fig. 9;
Fig. 14 is a plan view showing the relative posi
tions of the sinker cams;
Fig. 15 is a sectional view taken along the
} center line of one of the cam blocks;
of the sinker presser cams between adjacent cam
Fig. 17 is an elevation, partly in section, show
ing a cam block which is a modi?cation of that
Fig. 18 isya sectional view taken along the verti
’ cal center line of Fig. 17;
Fig. 19 is a plan view of the mechanism shown
in Fig. 17;
Fig. 20 is a sectional view taken along the line
X-X, Fig. 18;
Fig. 21 is an elevation showing the inner side
of this modified form of cam block;
Fig. 22 is a plan view showing the modi?ed
55 form 0! jack cam;
?gures are adapted to control needles which have
been selected to knit or to tuck or to produce
other fancy stitches in accordance with the
mechanism disclosed in application 706,082 above
mentioned. In one embodiment of that case 25
needles which were to knit were controlled by
needle cams only, whereas, needleswhich were
at the same time to take yarn intheir hooks,
were controlled by jacks adapted to pull said 30
needles downwardly either below the yarn taking
position or the cast off position as the case may I
Rei’en'ing to Figs. 1-5 mechanism is shown for
very accurately adjusting the needle controlling 35
cams, said adjustment being possible ina vertical
plane only‘, whereby the stitch length may be
varied either for ‘purposes of knitting tighter or
looser fabric or for adjusting certain cams about
Fig. 16 is a sectional view taken through one
45'shown in Fig. 1; '
and maybe used with machines of the rotating
cam type if so desired. The cams shown in these 20
‘ Fig. 13 is a plan view showing a modi?ed form
35 of sinker presser cam;
cylinder type but it is not; necessarily so limited _
not to knit or which were to fail to cast off but
»0 ing the sinker cams in place but having the needle
cam shown in position on its cam block;
multi=feed knitting machines of the rotary needle
Fig. 6 is a plan view corresponding to Fig. 5 and
showing the jack cams and their adjusting mech
20 anism;
Fig. '7 is an elevation showing one side of these
Fig. 25 is an elevation of this modi?ed sinker 5
Fig. 1 is an elevation showing the outer aid
ting machines and more especially for multi~feed
In the drawings:
Fig. 23 is a side elevation of the cam shown in
5 January 10, 1934, now Patent No. 2,067,877.
the'entlre machine to knit a de?nite length stitch 40
in accordance with that being produced on one
of the cam blocks which has been taken as a
standard. The mechanism consists of an upright
post I which has projecting feet as shown at 2
with drilled holes therein for the purpose of at- 45
taching the block to the machine frame by means
of bolts or the like. On the side facing the
needle cylinder, post I has a boss forming two
projecting ?anges 3 and 4 between which is ma
chined a groove indicated at 5. Two plates 6 50
and ‘I are attached by screws to the ?anges 3
and I of groove 5 forming a suitable slide within
which a cross-head 8 which carries needle cams,
3 and I0‘ is adapted tojslide. A needle raise cam
il having an angular projection I2 is attached 55
by suitable screws to the outer side of ?ange 3.
Post I is formed with an outwardly projecting
extension l3 on the opposite side. This extension
has a horizontal, radial slot I4 therein and a cam
I! having a stem l6 attached thereto which is
freely slidable in slot H. For the purpose of
graduations are merely used to secure a prelimi
nary adjustment of the stitch length when set
ting the machine.
Another collar 49 has ears 4| and 42, on either
side of -a split therein and a screw 43 passing
through car 42 and threaded within ear 4| serves
to clamp the collar about the hub of knurled
' maintaining said stem and cam from rotating
within slot l4 a plate I‘! is attached by means of - wheel 20. This collar has a projection at the
suitable screws to the ?attened outer side or stem other side thereon which is'slotted as shown at
l6 and bears on the corresponding ?at surface of 44 and engages a pin 45 projecting outwardly
the extension i3. ' A vertical groove is cut in the from a post i . This projection also has a pointer
outer side of plate i1 and an angular piece i8 46 attached thereto which cooperates with
having a slot cut vertically thereof is‘attached by knurled wheel 20 in the same way that pointer
a screw to plate I‘! but is free to be adjusted 39 cooperated with graduations upon the other
15 vertically as restricted by the groove‘in-said plate wheel 2 I. In operation both collars are loosened
and the length of slot in the angular piece itself.
A pin i9 projects upwardly from element It and
acts in cooperation ‘with the upper, horizontal,
reduced end of sliding piece l8 to loclrthe cam i5
20 in or out of position. Referring. to Fig‘. 2 wherein
about their respective spindles and an initial ad
justment is made by means of turning wheel 2|,
then collar 3|! may be tightened about its spindle
‘to lock the same whereupon av final adjustment
may be made by means of wheel 29, and then that 20
wheel and its spindle are to be locked by means
cam I5 is shown in advanced or operative vposi
tion, element I3 is in front of pin i9 so that the of collar 49. For adjustments to be made after
cam is locked in its place. The operator has only ' the machine has been in operation it‘ is likely‘
to slide angular piece i8 upwardly until it clears ‘that wheel 20 alone will suf?ce. ‘ ‘These adjust
the top of pin l9 and then to push cam l5 and
its slide. I6 outwardly until l8 drops onto the
other side of pin |9 whereupon said cam ‘will be
ments may be madein cooperation with indica 25
tions of stitch length of_any desired nature, but’
preferably are to be made as »a result of indica:
locked in-inoperative position.
tions such as produced by the visual means ‘shown _
in the case which has been mentioned above.
In Figs. 5, 6 and 7 we have shown cams which 30
control the jacks for operating sinkers to meas-
The cross-head 8 which carries cams 9 and I9
30 is vertically slidable in the guideway formed by
groove 5 and plates 6 and ‘I by means of small
knurled wheels 20 and 2|. As shown in Fig. 3,
post I has been bored out to accommodate a spin
dle 22 of which knurled wheel 2| forms an in
35 tegral part. This spindle 22 has a groove 23
therein which is engaged by the end 24 of a screw
25 which passes through one side of said post for
the purpose of holding spindle 22 in a ?xed axial
position. Spindle 22 has a hole drilled parallel
40 to the axis thereof but eccentric to the same,
within which is mounted for rotation a small
spindle 26 which is turned .down at its outer
end to form an extension 21, the small knurled
wheel 20 being ?xed to this extension by a taper
45 pin 26. Spindle 26 has an enlarged portion 29
at its opposite end" which engages within a hole
in cross-head 8. This portion 29 is slightly ec-'
centric to the spindle itself and it may be seen
ure yarn, said cams being indicated by numerals
41 and 43. These cams are attached to each
other by means of screws 49 which clamp them
together on a line shown at 50.
These cams do 35
not necessarily have to be attached to each other,
although we do so in this preferred form of the
invention, but may be separately attached to the
block if desired.‘
Cam 4‘! has a stern 5| which projects back to 40
form ‘a raised ledge 52, which cooperates with
the rear edge of a plate 63 clamped to the pro
jecting angular portion 54 of bracket‘ 66 by means '
of screws 66 and spacing member 61. The stem
6| is slotted as shown at 56- and 69 ‘so that it 45
may slide transversely of ‘the element 54 through
knurled wheel 2| the cross-head and its attached
out a small extent. Plate 63 cooperates with
stem 5| and ledge 62 to maintain them and at
tached cams 41 and 46 in ?xed position radially
oi‘ the machine but me. manner which allows 50
cams will be moved throughout a considerable
height while an adjustment by means of knurled
wheel 20 results in only a slight motion verti
Element 54 forms an integral extension of 56, and
60 indicates an extension of 55 which has been
cally of the cross-head and cams.
enlarged and especially shaped for the purpose of.
from an inspection of Fig. 3‘that by turning
The ?rst of
for adjustment circumferentially of the machine.
these adjustments is used to obtain a reasonable
close positioning of cams and the second is used
to make the ?nal adjustment which must be
mounting the sinker camv set.
extremely accurate.
as a unit.
A collar 39 being split at 3| has two project
60 ing ears 32, 33 through which a screw 34 passes
and by means otwhich the collar is to be clamped
about spindle 22. This collar has a projecting
lug 35 at its opposite side which engages within
a slot formed by an angular member 36 attached
to the end of slide i" by means of a set screw 31,
and a second angular member 38 attached to the
?xed element 36. The engagement of lug 35 be
‘ tween the co-acting ends of elements 36, 33 serves
to keep the collar from rotating, further, when
clamped about spindle 22 no motion of the same
will be possible thus cams 9 and I0 will be held
in a ?xed position. A pointer 39 is attached to
lug 35 and projects outwardly and along the sur-.
face of knurled wheel 2| to serve as a reference
.75 point for the graduations upon that wheel which
Screws 6| pass 55
through post I. and are threaded within element 1
55 for the purpose 'of maintaining these members
At either side of extension 64 we have
secured angular pieces 62 and 63. In the verti
cal extension of these angular pieces, set screws
64 and 66 are threaded for the purpose of adiust
ing stern 5|, cam 41 and cam 46 transversely of
the post | or circumferentially of the machine.
The purpose of this adjustment is to vary the
time at which sinkers will be actuated by their 65
jacks so that needles and sinkers will cooperate
properly in drawing ‘stitches. Jack earns 41. and
49 would have to be accurately positioned when
the machine was assembled but probably would
not have to be adjusted at any time thereafter
since stitch length is controlled entirely by means
of v the needle cam adjustment previously de
In Fig. 8 we have shown a portion of the ma
chine frame or base indicated at 66 and a series 75
of posts are shown in position on this base, spacer_ ’ cams 80 and BI. ‘The needle cylinder is shown at
members 61 being mounted between the base 66
94 and a needle 95 is shown in a trick therein, a
and the feet 2.0!’ the ‘cam blocks which form the sinker operating jack 96 also cooperating’with
subject matteiii of this case. 7 From this view one each needle and being mounted in the same trick
may see the e?icient and compacted manner in
which the cam block has been constructed, it
being possible as a result of this, to arrange an
unusually large number of cams about the cir
cumference of a needle cylinder.
Referring to Figs. 9-12 and 15 we will describe
the sinker cam assembly which mounts upon the
cam block to complete the unit which is adapted
ing element 99 for the purpose of engaging be
tween a suitable pair of lugs at the upper end of
jack 96 whereby the sinker will be rocked about 10
its outer end I00 for the purpose of cooperating
to draw stitches at one feed of our multi-feed
in measuring stitches. The needle tricks of this
machine are preferably formed of separate, hard
knitting machine. An angular bracket having a
vdownwardly projecting part 69 and a horizontally
extending projection 69 is fastened by means of
hardened’ strips or elements have projections I0!
suitable bolts or screws to a part of the block
passing about the entire cylinder and having suit
previously indicated by numeral 60. A plate 10
is attached by means of screws "II to the bracket
'20 69 and the assembly is maintained in proper ver
tical adjust'ment'by means 'of adjusting screws
12 and 13. When these screws have been ad
justed to maintain the cam assembly at its proper
height the one designated at ‘I2 is locked in posi
25 tion by means of set screw ‘I4 while the one desig
nated at 13 is locked by means of its set screw ‘I5.
The vertical adjustment is possible since the
‘ clamping screws or bolts 16 bear within suitable
ened elements inserted in a cylinder and these
thereon, upon which is clamped a support I02 ~
able slots cut radially of the machine at its upper ‘
surface for supporting the outer end of sinkers.
Clamps I03 serve to 'cooperate 'with‘ support I02 to
hold that latter element in a fixed relationship
to cylinder 94 so that it will rotate therewith and
will also maintain the sinkers in proper relation- - '
ship between needles and their outer ends while
‘a stitch ring I04 having corresponding slots. I05 .25
serves to maintain the inner ends of these sinkers '
in proper alignment.- A fabric support ring I08
is retained within the stitch ring I 04 and serves‘
slots ‘I1 (Fig. 12) and these screws are not tight
ened up until the proper vertical adjustmentjhas
to hold the fabric against the action of the‘ take
up/(not shown) thus relieving the sinkers them
been obtained.
selves of the weight of the fabric as it is drawn
Bracket 69 is slotted in a direction radial t0
the center of the needle circle and this slot in
down by said take-up. This isa very important
mounting the sinker projecting cam 00. This
head ‘I9 has slots cut therein indicated'at 8I and
feature since our sinkers are moved vertically, to f
measure stitches and any additional weight at
their inner ends would serve/to give jacks 96‘an 35
unnecessarily hard action and cause premature
wear on both jacks and sinkers. Ring» I06 has
82 and screws passing therethrough serve to per
manently attach cam 80 to the head. If it is
allowing lint to drop through.
cooperation with plate 10 forms a suitable slide
35 for a stem 18 which has a T-shaped .head ‘I9 for
and preferably in ‘front of the corresponding .
needle. The sinker is shown having the usual
nib 91 and throat 98 and a horizontally‘project
desired to adjust cam 80 circumferentlally of the
nachine the screws passing through slots BI, 82
He loosened and the cam may be moved along
elongated holes I01 therein for the purpose of
In referring to Fig. 14 again, we have showna
sinker pressure cam I08 which bears upon the
upper surface of the sinker stems to hold them
in position between the sinker cams ‘at adjacent
2he direction of the slots until proper adjustment
.s maintained whereupon said screws are tight ' cam blocks. These presser cams" I08 overlap
ened. Plate 10 has two holes 83 cut therein sinker cams 9| which are recessed at their ends
through which it is possible to‘reach these cam for the purpose of accommodating corresponding
adjusting screws for purposes of making an ad
justment when the machine is assembled.
Cam 80 is held in its innermost position ac
cording to an adjustment provided by an adjust
ing screwy“ by means of 'a spring 85 attached
to a pin 86 ?xed to plate ‘I0 and also to a-pin 81
attached to stem 18. By turning a suitable
thumb piece on screw 84 the machine operator
may adjust the cam 80 to its proper radial posi
tion, a screw 88providing for locking this ad
justment once it has been made. Stem 18 has
recesses in the presser~ cam. The entire series
of presser cams is held inwardly against the backs
of sinkers by means of a coil spring I 09.. With
out these presser cams it might be possible for
sinkers to ride upwardly in their slots after leav
ing the sinker cams at one block so that they
would strike the cams of the next ‘block and
become broken.
wardly against the tension of spring 85 thereby
providing a safeguard against the breakage of
the sinker butts and possibly other parts of, the
A sinker retracting cam 9| is permanently at
tached by means of screws 92 to the plate 10.
In Figs. 14 and 15 the relative arrangement of
these cams about the needle°circle is shown and
is shown‘ attached to a plate .I I0 similar to plate
V a projection 09 which is split as shown-at 80, ' ' ‘III.
the screw 88 passing through the upper section
60 and being threaded in the lower'section for the
purpose of clamping adjusting screw 84. The
tension of spring 85 is su?iclent to hold cam 00
inward to project the sinkers inwardly to a proper
distance but in case any improper action of the
sinkers should occur, cam 80 may be forced out
In Fig. 13 a modified form'of sinker presser cam
This presser cam is designated at I II and is '
of the general shape of the presser cam shown in
Fig. 14, but'has anextension H2 projecting radi
ally which has two screws H3 and I“ extending
upwardly therefrom and projecting through slots
in plate I I0. A hooked element H5 is adjustably
attached to plate I I0 by means of screws or other
suitable'connection. This hooked piece may have
slots whereby it may be moved radially so that
projection “6 will contact the screw H4 which
projects upwardly through a slot and will limit
the~movement of the presser cam inwardly‘. A
spring I I1 similar to I09 is used for'the purpose of
resiliently holding all the presser cams inwardly
against the backs of sinkers. _ ‘
A modified form of cam block has been shown
especially in Fig. 15 we have shown the manner
in Figs. 17-28.
in which a sinker butt '93 cooperates with sinker
adapted to control needles whichare to knit or 75
The cams of this cam block are
‘ 8,188,584
tuck in accordance with a predetermined selection
maintaining spindle III in proper axial position.
latch needles be used) clearing position if said
spindle by means 'of_a spring I" and an adjusting
by jacks which push needles up to latch (if . This plunger I“ is held inwardly against the I ‘
needles are to knit. If the jacks are not selected
for pushing needles upwardly said needles may be
controlled to tuck or not to knit at all. Certain
. features of either modi?cation may be used with
the other and it is not necessary to employ the
sinker or jackcams shown ‘withone modi?cation
10 in combination with the particular needle control
described relative to said cam block, nor is it nec
essary to ‘use the cam adjusting mechanism
shown with one modi?cation with that particular
modi?cation since it may be used with any ca'm
15 block which falls within the general class of cam
block herein described.
screw I“, in turn held in proper adjustment by a
lock nut I". Spindle “I has a hole drilled
therein at Ill which is-slightly eccentric/to the
spindle itself, and within this hole is ?xedly
attached by'means of set- screw I49 a short pin
I I. which is turned down at its outer end to ?t
within a‘ bushing Ill. This bushing is held 10
within a drilled hole in cross-head I26 and it may
be'se'en that when spindle Ill is rotated, cross
head Ill will be moved vertically within its guide
way for the purpose of adjusting the height oi’
stitch cams I28, I32 relative to the other stitch
drawing instrumentality.
Two ears I52 and I" are cast onto the outside
_' Referring to Figs. 17-21, a post II. having
projecting feet II! with drilled holes therein for of post III and serve to provide bearings within
purposes of mounting on the base of the knitting/ which a worm screw I54 may rotate. This screw
20 machine, has a vertical slot III machined on the ' has at one end a knurled thumb wheel I55 by 20
inner side thereof; this slot I2. extends through--v
out the entire height of the inner side of post I II
and. a secondary slot‘ or guideway is formed
throughout a portion of its extent by means of
?anges I2I, I22 projecting outwardly from ma
chined surfaces which are in a plane with the
outer extent of slot III. A U-shaped piece indi
cated at its lower horizontal portionby numeral
I23 and having two‘projections extending up
wardly at I 24 and III is attached by suitable
means of which the operator may turn said screw
and adjust stitch length by means of cams III,
III. The great reduction afforded by the single
threaded worm and small eccentricity of pin I"
make it possible for the operator to adjust stitch
length very accurately. Once stitch cams have
been adjusted, they will remain in that position
without any locking means since it is impossible
for the worm wheel to rotate the single threaded
worm which is arranged to .rotate within its
bolts or screws to flanges Ill, ill to complete a
bearings under a slight friction. I A nut I" hav
by means of a shim Ill carries stitch cam III.
adapted to control these sinker jacks more posi- tively. The post III hasga ?at horizontal sur 40
face at Ill upon which slides a cam carrying
guideway within which the cross-head ‘i2! is free, ing a hub portion III which serves as a bearing
for~ that end of the worm, is threaded there
to slide in a vertical direction.
_ Cross-head I28 has a projecting part I21 which through and may be locked in proper adjustment
carries a needle guard cam I20. This guard cam by means of set screw'lll.
In Figs. 21-23 a modi?ed form of sinker jack
is securely attached to projection I21 and is main
tained at proper elevation by means of projecting cam is shown, this cam assembly being much
lip III. A block Ill spaced from projection III simpler than that of the ,?rst form and is also
The stitch cam is held in proper position relative
to block III as it bears at its upper edge against
a lip I”. To obtain the proper spacing between
cams I” and I32 the thickness of shim III may
be varied.
The lower horizontal portion I28 of the U
_ shaped member before mentioned, projects out
wardly and acts to support cam I“ which cam is
employed for returning jacks to their lowermost
position preparatory to again being selected for
operation at the next knitting station.
Aboss Iliis cast onto the side of post III and
has a slot machined therein within which stem
I" of. cm Ii‘lgis adapted to slide in a direction
radiaito the needle cylinder. A set screwill is
threaded downthrough the upper portion or’ boss
I" ‘and has a cone shaped end which engages
within the slot I” to lock cam I" in operative or
inoperative position. The set screw Ill engages
the V-shaped slot I” in a manner to hold stem
Ill against the back of its cooperating slot and
thus in proper radial position. Cam I" when in
operative position serves to raise needles to a
tuck-position only, needles which are to actually
element Ill. As ‘shown in plan view in Fig. 22
this element which carries the jack cams is held
in position. on surface I It by means of a plate
III held in a ?xed position by means of screws 45
I02 and spacers I". This plate bears within an
annular groove cut in the top surface of element
I“, the groove and the plate being formed on
arcs swung from the center of the needle circle
so that any adjustment of the cams will not ‘af
fect their radial position from the needle circle.
A certain amount of metal has been cut away from
element I" adjacent spacers I" so that the
carrier may be adjusted without interference.
Two ears I“ ‘and ‘Ill project rearwardly and 55
upwardly from the sliding carrier and have ad
justing screws I" and I" threaded therein for
the purpose of adjusting the carrier and its cams
circumferentiallyof the machine, these screws
bearing against the sides of a projection m
extending upwardly and forming an integral part
of post III.
The lower jack cam I" is attached by means
Ill to a recessed portion oi carrier
knit having been raised'to latchclearing Mtion Ill.screws
jack cam III is attached'by means ofjacks. Incase'thlscamisinits
inoperative position, such needles as are not '_ screws or other suitable connection to the lower
cam. This upper cam has a long extension I12
willmerelypassthroughthestitch camsata level
'belowthat atwhichtheymight takeyarn in their
which is ‘adapted to guide the sinker jacks
throughout a great part of the distance between
adjacent cam blocks.
within which’ is mounted for rotation a‘ spindle
sinker cam assembly is shown wherein the's'inker
pruser cam is mounted and controlled upon its
individual sinker cam assembly. The extension
mass a hole drilled am at I“;
ill enlarged at its outer end to form worm
I". The spindle has an
_ In Figs. 24-38 a simple and e?’ective ‘form of
able for mounting the sinker cam assembly. An
angular piece having a horizontal portion I13 is
attached by means of screws to a plate I14. _A
pair of adjusting screws I15 serve to maintain
and jacks for that feed are not selected to knit.
while in the ?rst modi?cation, cam I5 is retracted
and the stitch cams are adjusted to a lowermost
the angular member and plate I14 at‘ a proper
height, and when this adjustment has been
made, screws I16 bearing within slots cut ver
The needle tricks, needles, jacks, and sinkers
position so_that needles pass idly thru them.
are very accessible since a block or plurality of
blocks may be very quickly removed, such acces
sibility not being at'all possible in the conven
tically of the upright portion I11 of said an
gular member, are tightened to secure the entire’ tional construction wherein a cam ring mounting
sinker cam assembly in position on the extension
I68. Plate I14 carries‘a ?xed cam I18 attached
all the needle cams and a sinker head and cap
encompassing the entire complement of sinkers.
by means of suitable connection elements, this
cam functioning as a sinker retracting cam.
adapted to cooperate with the cylinder, stitch
ring and sinker supporting'ring herein shown,
but, of course,‘may be used with fair equivalents 15,
vof the same or with ‘other needle and sinker
To a pivot I19 ?xed to plate I14'Fis adapted to
15 swing an arm I80 having two slots arranged
longitudinally thereof. Sinker projecting cam
I8I is adjustably secured to this arm ‘by means
of screws passing through the slots and both
cam and arm are adapted to be adjusted radial-~
ly of, the machine by mechanism hereinafter de
A cam contacting element I82 having a lip
I92’ at the upper edge thereof which bears up
on'slnker cam I8I has an extension I83 which
assemblies not so constructed.
When it becomes necessary during the ordinary
use of the machine to replace a needle, jack or
sinker which has become broken or inoperative,
the space between the individual cam‘ and jack
selector assemblies provides an opening wherein
‘the ‘operator may work to remove-;the broken
part and to insert another- It‘is not necessary
The threaded . to rotate the machine by hand to a certain open
25 terminates in a threaded end I84.
end of stem I83 passes through a hole in the ver
tical portion I11 while the cam contacting piece‘
ing which has been provided for the purpose as
in conventional machines, but merely to rotate
the cylinder until the particular ‘needle, jack or
sinker enters the nearest space between cam units.
30 adjusting mechanism and cam I8I in its inner
The cam blocks herein illustrated and described 30
are used merely as examples of two speci?c forms
most position, however, if due to improper op
eration of sinkers, theycan not be projected in-' which our, invention may take, and it is to be
wardly, spring I85 provides for cam I8I giving understood that the principles involved are to be
way so that no breakage of sinkers will result. broadly construed and that we do not intend to
I82 slides .in a suitable slot in horizontal por
. tion I13. A spring I85 serves to maintain the
35 A thumb nut I86 is provided for adjusting the
position of cam I 8|, this thumb nut being split
as shown at I81 and having a set screw I88
threaded‘ therein for the purpose of locking the
same. An elongated hole M9 is out in plate I14
be limited'to the speci?c mechanism hereindis
closed except by the scope of the appended
. claims.
We claim:
1. In a multi-feed knitting machine, a series
when_ of like cam assemblies including a plurality of 40
40 so that cam I9I may beadjusted on its
cams, the cams of each assembly being adapted
the assembly is in position on the machine.‘
Cam I18 projects outwardly from its mounting to control the movements of knitting instrumen
plate and a screw I99 threaded therein forms a' talities including needles and ‘sinkers, each said
' pivot point for the double ended lever _I9I. -A cam assembly being wholly mounted on a support
sinker presser cam I92 is pivoted at I93 at one readily attachable to and detachable from a 45
end of this lever I9I and rides upon'the top
surface of the sinker stems serving ‘to press
sinkers downwardly between cam blocks and'also
to resiliently urge them inwardly. Cam I92 has
a beveled end which cooperates with a corre-.
spondingly beveled surface I94 on the adjacent
' end of the sinker retracting cam.
The opposite
end of lever I9I has a spring I95 connected
thereto, the opposite end of said spring being
55 attached to an angular projection I 96 on a
spring retaining and adjusting element I91.
The last‘ mentioned element has a slot I98 cut
lengthwise thereof by means of which it is ad
justably attached to ~plate I14 by screw I99.
Element I91 has a turned down edge 200 which
vmaintains it in proper alignment with the cor
responding edge of plate I14. By means of this
adjustment the tension on spring I95 may be
varied, thus varying the force with which the
65 presser cams are urged inwardly against the
backs of sinkers.
The cam blocks herein ‘described form com
plete units which may be attached in any desired
number to the base of a multi-ieed knitting ma
70 chine and in cooperative relationship with the
knitting machine.
2. Forum in amulti-feed knitting machine a
readily detachable cam support, cams mounted
on the support for controlling the movements of
needles, other cam means positioned above‘ the
?rst cam means and attached to the support, said.
second cam means controlling the movements
of other knitting instrumentalities.
3. A readily detachable cam support for a
knitting machine, cams thereon for controlling 55
the movements of needles and other cams there
on, and positioned above the ?rst mentioned
cams, for imparting longitudinal movements to -»
other and cooperating knitting instrumentalities.
4. A readily detachable cam support fora 60
knitting machine, cams thereon for controlling
the movements of needles and other cams thereon
including jack cams, and positioned above the
?rst mentioned cams, for imparting longitudinal
movements to other and ‘cooperating knitting
instrumentalities. the jack cams being positioned
between the other two sets of cams. I
5. A cam block for knitting machines com
prising as a unitary structure, a support, needle
cams and sinker cams operatively connected to
needles,’ jacks and sinkers thereof and at any
said support.
time, one or more blocks may be removed or
6. A cam block for knitting machines com
prising as a unitary structure, a support, needle
cams, jack cams, and sinker cams operatively at
rendered inoperative to knit without affecting the
proper knitting of those remaining. In the case
of the second ‘modi?cation, cam I81 is retracted
tached to said support.
' amass
'I. A unitary cam struetm'eior
I eams.
eamsandjackcsmsmountedonsaidmpport, a
and adjustingmean's ior saidneedleeams,
' adjusting meansiorrning a component part’
'imit'ary structure,ineansiorvertioallypoaitioning
sinker'advancim and retracting cams mounted
port,sinkercarnsattachedtosaids\mportand asunitsoisaidassemhlmmeansioradjustingsaid
~10 means
ior adjusting the'po'sition'oi' one of 'said' advancingcamsuhstantiallyradiallyoianeedle
aretobeprojectedby'saidcammaybe varied.
0. A cam block-for knitting machines having
slidahly mounted therein stitch drawing cams,
means ior adjusting said cams. a needle raising
cam mounted to slide into and from active and
inactive positions. said raising cam having means
auociated therewith for locking the same in
either oi these pollitiu'ns.v
10. A cam block ior knitting machines com
slotsiormedonanextension oisaidneedlecylin
-der, jacks operatively rnoimtedinsaidneedle
cylinder for actuating said sinkers whereby they
prising a support. guideways in said support, a wiIIoooperateinmeasuringstitehesAneomhina
c‘rom-head vertically slidahle in said guideways ‘tionwithacamhloekiormedasaunitarystme
and having needle actuating cams secured thereto. ture said cam‘ block having needleJackandsinker
mans for adjusting said cross-head and its at; camsmountedthereoh for cooperation withtheir
tached cams vertically in said guideway compris
respective elements, said needle, jack and sinker
ing a spindle rotatable within said support, ec
centric means at one end of said spindle engag
ing in a suitable hearing within said cross-head.
a worm wheel at the other end oi said spindle
and a worm screw operatively associated with
cams each having individual means whereby it
may be adjusted ior the purposes herein de
said worm wheel whereby the wheel and spindle
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