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Патент USA US2126629

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Aug. 9, 1938.
H. FLEISHER
2,126,629
NAPPING MACHINE
.Filed July so, 1956
2 Sheets—$héct 1
.
BY
INVENTOR
.
Harry. Fleisher
-
A TTURNEY
Aug. 9, 1938.
' _
|-|_ FLE|sHER
-
2,126,629
NAPPING MACHINE
Filed. July 30, 1956
2 Sheets-Sheet 2_
INVENTOR
Harry Fleisher
A TTORIJI: é
Patented Aug. 9, 1938
-.;
.11...
UNITED STATES PATENT OFFICE
NAPPING MACHINE
Harry Fleisher, Watertown, Conn” assignor to
Princeton, Inc., Watertown, Conn., a oorpora-~
tion of Connecticut
.
1
Application July 30, 1936, serial Noisasal‘
19‘Claims. (01. 66—147)
This invention relates to knitted fabrics, and frame In. 'A' sinker-bed I5 is suitably supported
more particularly to an attachment to a circular
knitting machine for napping a tubular knitted
fabric produced therein.
‘ 5
One object of this invention is to provide a
napping device of the above nature which isprovided with a plurality of napping discs which are
circumferentially spaced around the tubular
knitted fabric, and adapted to be rotated in, opl C posite directions so that their ?at end faces. will
engage the interior surface of said fabric for
producing a novel circular twisted nap effect
thereon.
.
A further object is to provide a napping device
15 of the above nature having, in addition to the
rotating napping discs, a non-rotating napping
disc and a rotating napping wheel, located at
spaced intervals around the periphery of the
knitting machine.
.
20
by brackets (not shown) above the frame Ill and
carries a series of sinkers I6 for cooperating with
the needles I3 in‘ thevcustomary manner.
In order to support the usual spool guides and 5
otherparts of the machine in an elevated posi
tion, provision is made of a Pair Of oppositely
spaced vertical posts I‘! and I8, which are de
tachably'secured at their lower ends to the frame
In, as byhuts law The upper ends of the posts 10
IT and “3 are attached, as by huts I9, Within a
Pei!‘ Of tubule!‘ bosses 20, Which are integrally
formed at the opposite ends of an overhead cross
beam 2! Supported by Said pests H and I8
The central portion of the. cross beam 2| is 15
formed with a relatively large tubular boss 22
in which is rigidly held, as by means of a set
screw 23, a large vertical support rod 24 posi
tioned concentrically with respect to the tubular
A still further object is to- provide a napping
device of the above nature which will be simple
in construction, inexpensive to manufacture,
which will produce an attractive and ornamental
fabric produced by the knitting machine and 20
adapted to form asupport for the elevated parts
of the mechanism
As best shown in Fig- llthe fabric 25 Which is
nap on the knitted fabric, and which wi11 be
25 durable and efficient in use.
With these and other objects in view, there
have been illustrated on the accompanying drawings two forms in which the invention may be
conveniently embodied in practice.
knitted by the circular row of needles I3 is drawn
downwardly through the hollow interior of the 25
rotating needle cylinder '4, and rolled up 0h 8'
suitable drum at the base of the machine by
suitable mechanism; not shOWn- . AS the tubular
30
chine, it is held in cylindrical form by means of 30
a pair of upper and 10We1‘ horizontal Circular
guide rings 25 and 21 Which are adapted ‘00 en
ease the interior surface of said knitted fabric.
In the drawings:
,
Fig. 1 represents a front elevation, partly in
section, of a circular knitting machinev upon
which the improved napping mechanism has been
installed.
35
The upper ring 26 is preferably held stationary
Fig. 2 is a horizontal transverse sectional view
of the same, the View being taken along the line
2-2 of Fig. 1, looking downwardly.
.
Fig. 3 is a fragmentary left side view of the
rotary napping wheel positioned at the rear of
40 the machine, as viewed in Fig. 2.
fabric 25 passes downwardly through the me»
i
. Fig. 4 is a fragmentary left. side View of ‘the
stationary napping disc which‘is located at the
front of the machine.
'1: ‘
Fig. 5 is a front elevation of a modi?ed form
45 of driving mechanism arranged to rotate the
rotary napping discs in the same direction. _
Referring now to_the drawings in which like
reference numerals denote corresponding parts
throughout the several views, the numeral I 0 in-
by means of a pair of radial ?at bars 28 formed 35
integral With a Central tubular hub 29 adjust
ably secured on the central rod 24, as by a set
screw 30, the extremities of said bars 28 being
made secure to said ring 26.
nular member II carrying a plurality of cams
[2 which are designed to raise and lower a se-ries of vertical knitting needles l3 disposed
55 around a rotary cylinder I4,locatedv within said
‘
bar 3I,,the intermediate portion of which is ap
ertured for, loosely embracing the support rod
24, {Ifhe crossbar ‘3| is ,freeto rotate between
a pair of rigidvspaceid collars 32, 32 secured to
said rod 24, aszvby. set :screws 33,33. It will thus 45
bev seen thatrthe lower guide ring 21 will be al
lowed to rotate with the, tubular fabric within
which said ringis tightly and frictionally en
gaged.
‘
50 dicates the _main frame of the circular knitting
machine, said frame supporting. a stationary an-
‘ v
The lower guide ring 21 is secured to a cross 40
_
v
i
l.
Napping mechanism
7
I
50
,
_ The napping Of the tubular knitted fabric, as it
passes down, through the machine, is accom
plished on the inner surface thereof by means of
‘two rotatingvflat disc brushes 34, 35, a non-rotat- 55
2
2,126,629
,
ing ?at “smoothing" disc brush 8|, and an “auxil
iary” rotating wheel brush 69, all of said rotary
napping brushes being located substantially in a
single horizontal plane midway between the guide
rings 26 and 21, and said non-rotating napping
brush being carried by one of the upper guide ring
cross bars 28.
The pair of rotating flat disc brushes 34 and 35
are preferably provided with a multiplicity of
short bristles set in square shaped blocks 36 and
31. The blocks 36 and 31 of the flat napping ;,
disc brushes 34 and 35 are seated in a pair of
channel shaped holders 38 and detachably re
tained therein by small set screws 39. The block
holders 38 are in turn attached to the outer oppo
site faces of a pair of small sheaves 40 and 4|
loosely mounted independently of each other on
the outer ends of a pair of axially'adjustable non
rotating arms 42 which are threaded at their
inner ends. The sheaves 4|] and 4| are provided
with enlarged inwardly extending hubs 43, within
which are a pair of outer ball bearing raceways 44,
surrounding a pair of cooperating inner raceways
44a rigidly mounted on the reduced ends 42g, of
‘the stationary arms 42.
The radial arms 42' are
adjustably mounted in a pair of tapped opposed
tubularv members 45 extending outwardly on oppo
site sides of the vertical support rod 24 from a hub
46 which is ‘adapted to be held in vertically
adjusted position on said rod 24 by means of a set
screw 41. The tapped members 45 are adapted to
receive the threaded inner ends of the arms 42.
In order to manually twist the radial shafts 42
and also serve to indicate the adjustment of the
napping brushes 34 and 35, provision is made of a
shown.
As shown in Fig. l, the horizontal driving shaft
54 passes directly through the axis of the vertical
support rod 24, the upper part of said support rod
24 being separated by a space 6| from the lower
part thereof. In order to connect the upper and 10
lower parts of said rod 24, provision is made of a
tubular sleeve 62 which is detachably locked in
position thereon by means of a pair of set screws
63, 63a. A pair of transverse openings 64 are
provided in the sleeve 62 for loosely accommodat
ing the drive shaft 54 which passes therethrough.
A pair of relatively large pulley sheaves 65 and
66 are made rigid to the driving shaft 54, and are
preferably equally spaced from the vertical rod 24.
The sheaves 65 and 66 are connected by belts 61 20
and 68 with the sheaves 46 and 4|, respectively, of
the rotary napping brushes 34 and 35. The left
hand belt 61, as shown in Fig. 1, is crossed so that
the brushes 34 and 35 will be caused to rotate in
opposite directions, and thereby produce a more
effective twisting napping upon the fabric 25 as
the latter moves downwardly and rotates past said
brushes in a helical manner.
In order to produce a vertical napping of the
fabric 25 in addition to the rotary napping pro 30
duced by the brushes 34 and 35, provision is made
‘of a thin brush 69 having a cylindrical napping
surface and rotating in a vertical plane, said brush
69 being hereinafter referred to as the “auxiliary”
brush.
As best shown in Fig. 2, this auxiliary 35
pair of pins 48 passing transversely through inter
brush 69 is mounted on a horizontal stub spindle
mediate sections of said arms 42. The arms 42
are adapted to be locked securely in any desired
adjusted positions by means of a pair of locking
10 rigidly secured to a hollow hub 1|, the latter
having an integral sheave 12 and being mounted
nuts 49. The axial adjustment of the radial arms
42 determines the pressure exerted by the rotat
ing brushes 34 and 35 against the inner surface of
the knitted fabric 25 to be napped.
'
'
In order to cause the fabric 25 to be held tightly
against the flat working areas of the rotating disc
brushes 34 and 35, provision is made of a pair of
inwardly-convex elongated ?at leaf springs .50,
which are adapted to engage the fabric just below
the brushes 34 and 35, causing said fabric to be
50 slightly bulged inwardly, as shown in Fig. 1. The
leaf springs 50 are supported at their ?xed ends
by flat horizontal plates 5| which are adapted to
be ?tted upon the lower threaded ends of a pair of
vertical studs 52 (only one stud being herein
shown) depending from the under surface of the
knitting machine frame In. The plates 5| are
held in any desired vertical adjusted position on
said studs by a pair of opposed nuts 53.
60
shaft 54 from sliding to the right, as viewed in
Fig. l. The shaft 54 is driven by means of a pair
of meshing beveled gears 59 and 60, the gear 60
receiving power from any suitable source, not
Driving mechanism
In order to continuously rotate the napping
brushes to produce a twisting inclined napping
action upon the interior of the traveling knitted
fabric, provision is made of an elevated horizontal
driving shaft 54 located above the knitting and
napping mechanism and having its left-hand end
journaled in an upper enlarged end 55 of an
angular bracket 56, said bracket being held- ad
justably on the vertical rod 24, as by a setiscrew
51. The opposite right-hand end of the shaft 54
is journaled in. another bracket (not shown),
which may be readily attached tov any convenient
stationary part of the knitting machine. A thrust
collar 58‘ engages the outer face of the enlarged
end 55 of the bracket 56 to prevent the driving
by means of ball bearings 13 upon a stationary
axle 14 projecting from the outer face of an angu
lar bracket 14a. The angular bracket is adjust
ably supported on the outer threaded end of a
horizontal support bar 15 and is retained in ad
justed position thereon by a pair of opposed look
ing nuts 16, 16.
The opposite end of the support
bar 15 is threadedly engaged in an apertured
rectangular block 11 adjustably ?tted over the
right-hand member 45 of the hub 46 and locked in
position, as by a set screw 18.
The auxiliary wheel brush 69 is driven by means 50
of a. belt 19 engaging the sheave 12, similar to the
‘sheaves 40 and 4| and passing over a large sheave
80 (similar to sheaves 65 and 66) rigid on the
driving shaft 54 and located adjacent the sleeve
62 of the support rod 24. As shown in Fig. 3, .
the auxiliary brush 69 is adapted to rotate in
such a direction as to cause its peripheral sur
face to travel downwardly rapidly in the same
direction as the slow movement of the knitted
fabric 25. It is within the spirit and scope of 60
the present invention, however, to rotate the
auxiliary wheel in the opposite direction if de
sired.
Smoothing-out brush
65
The ‘stationary disc brush 8| is attached to
the downwardly offset end 82 of a strap bracket
83 secured to. the underside of the cross bar 28
by means of a pair of bolts 84', 84. The offset
end 82/ extends downwardly to a position where 70
the attached brush ‘8| will engage the fabric 25
just below the working plane of the rotary
brushes 34 and 35 and the auxiliary brush 69,
and serves to smooth out the nap raised on the
fabric by said rotary brushes. The strap bracket 75
2,126,629
' 83 is provided with an elon‘gatedslot 85 through
which the bolts ‘84 pass,‘ which construction per
mits adjustment of said bracket 83 with respect
to saidcross bar 28, whereby the smoothing brush
3
cause said member to engage the interior surface
of said tubular fabric along a ?at area thereof.
4‘. In a napping apparatus, means for continu
ously delivering a slowly rotating tubular knitted
9| may be heldagainst the fabric 25 with any ‘ fabric, a rotating napping member having a flat
.
face located within the circular path of said tu
desired pressure.
Modi?ed form of napping device
In case it is desired to rotate the disc ‘napping
brushes in the same direction by employing only
a single belt, the form of the invention shown in
Fig. 5 may be employed. In this form, the main
support rod 24' will be also separated at a point
86 between the napping brush discs, and the ad
15 jacent ends of said rod 24' will be joined by a
hollow T-member 81 having a vertical sleeve
81a and set screws 88 passing therethrough into
engagement with the adjacent ends of said rod.
The T-member 81 is also privided with horizontal
opposed tubular sleeves 89 terminating in en
larged ends 99. In this form of the invention, a
horizontal spindle shaft 9| passes through the
space 86 and ?ts loosely within the horizontal
sleeves 89. The outer ends of said shaft 9| are
25 journaled in ball bearing mountings 92, 92 car
ried by the enlarged ends 90, 99 of said hollow
T-member 81.
The outer ends of the horizontal shaft 9| are
‘threaded and adapted to adjustably receive a pair
30 of tapped hubs 93, 93 formed integral with a
pair of channel blocks 94, 94, which are adapted
to detachably hold the brushes 34' and 35'. A
pair of locking nuts 95 are provided for securing
the hubs 93, 93 in adjusted positions upon the
opposite ends of the spindle 9!. The spindle
shaft 9| is adapted to be rotated by means of a
single sheave 99 secured to said shaft 9| and
driven by a belt 91 which in turn passes over a
large sheave (not shown) keyed to the elevated
driving shaft 54.
While there have been disclosed in this speci?
bular fabric, and means on the exterior of said
fabric to resiliently press upon a portion of said
fabric to cause a ?at area of said fabric to con
tact with the flat napping face of said member.
5. In an apparatus for napping the interior
surface of a continuously traveling tubular knit
ted fabric, a pair of rotating members having
?at napping end faces, and resilient means press
ing inwardly upon said fabric to cause the nap
ping faces of said members to engage the interior
surface of said tubular fabric along a pair of
separated ?at areas thereof.
6. In an apparatus for napping the interior
surface of a continuously traveling tubular knit
ted fabric, a plurality of rotating members hav
ing ?at napping end surfaces located within said
fabric, and resilient inwardly pressing exterior
means for pressing corresponding flat areas of
the interior surface of said fabric against said ro
tating members to produce an inclined napped
effect thereon.
7. In an apparatus for napping the interior
surface of a continuously traveling tubular knit
ted fabric, a pair of rotating members having 30
flat napping end faces, and resilient means out
side said fabric to cause the napping faces of
said members to engage the interior surface of
said tubular fabric along a pair of separated flat
areas thereof, and means to rotate said discs in 35
opposite directions.
.
8. In an apparatus for napping the interior sur—
face of a continuously traveling tubular knitted
fabric, a pair of rotating members having flat
napping end faces, exterior means pressing in 40
wardly upon said fabric to cause the napping
cation two forms in which the invention may be
embodied, it is to be understood that these forms
are shown for the purpose of illustration only,
and that the invention is not to be limited to
faces of said members to engage the interior sur
face of said tubular fabric along a pair of sepa
rated ?at areas thereof and produce an inclined
napping effect, and a non-rotating napping mem- ,
the speci?c disclosures but may be modi?ed and
embodied in various other forms without de
parting from its spirit. In short, the invention
includes all the modi?cations and embodiments
coming within the scope of the following claims.
Having thus fully described the invention, what
ber spaced from said rotating members for
smoothly brushing the napped surface of said
is claimed as new, and for which it is desired to
secure Letters Patent, is:
1. In a combined knitting and napping ma—
chine, mechanism for knitting a tubular fabric,
means for interiorly supporting said fabric at a
pair of spaced circumferential lines, and interior
rotating flat-faced napping disc located between
said supporting means, and means for causing
60 the ?at face of said disc to contact with said
fabric.
2. In a napping machine, means for interiorly
supporting a tubular fabric along a pair of spaced
lines, an interior rotating ?at-faced napping disc
65
with an outwardly extending napping surface
on its ?at face located between said supporting
means, and means to cause the flat face of said
disc to engage and nap the interior surface of
70 said fabric.
3. In an apparatus for napping the interior
surface of a continuously traveling tubular knit
ted fabric, a rotating ?at-ended member having
napping means on its flat end surface, and resil
75 ient means pressing inwardly upon said fabric to
fabric.
I
9. In an apparatus for napping the interior
surface of a continuously traveling tubular knitted 50
fabric, a pair of rotating brushes having ?at
napping end faces, exterior means inwardly
pressing on said fabric to cause the napping faces
of said brushes to engage the interior surface of
said tubular fabric along a pair of separated flat 55
areas thereof, and a rotating auxiliary brushing
wheel having a thin cylindrical napping periph
ery for napping the interior surface of said
fabric along a line located between said flat areas.
10. In an apparatus for napping the interior 60
surface of a continuously traveling tubular
knitted fabric, a pair of rotating brushes having
?at napping end faces, exterior means pressing
inwardly on said fabric to cause the napping faces
of said brushes to engage the interior surface of 65
said tubular fabric along a pair of separated ?at
areas thereof, and a rotating auxiliary brushing
wheel having a cylindrical napping periphery for
napping the interior surface of said fabric along
a line located between said ?at areas.
70
11. In an apparatus for napping the interior
surface of a tubular knitted fabric which is con
tinuously moved longitudinally and slowly rotated
at the same time, means to force said fabric in
wardly, a rotating member inside said fabric hav 75
2,126,629
ing a ?at end napping surface for engaging and
'iliary, napping wheel having'a cylindrical napping
napping a flat area of said fabric, and a non
periphery adaptedto engage a vertical line. of
rotating brush inside said fabric spaced from
said fabric, said brush and wheel being mounted
.to rotate in bearings supported by said central
said rotary napping member.
..
12. In an apparatus for napping a continuously
helically moving tubular knitted fabric, a rotat
ing flat surfaced napping member engaging and
napping said fabric along a flat area thereof,
bar, and 'means'to . press said fabric inwardly
against said brush and napping wheel.
16. In an apparatus for napping the interior sur
napping member spaced longitudinally from said
rotating napping member for smoothly brushing
face of a longitudinally traveling tubular knitted
fabric, a vertical central supporting bar, a hori
zontal driving shaft, a rotating brush journaled
on a horizontal axis ‘and having a ?at end nap
ping surface, and an auxiliary napping wheel hav
the surface of said fabric.
13. In an apparatus for napping a tubular
15 knitted fabric which is continuously rotatable and
movable in a longitudinal direction, a central ver
and belt and pulley means connecting said driv
ing shaft with said brush and said napping wheel
tical supporting bar, a horizontal driving shaft
to rotate the same.
means for forcing said fabric against the ?at sur
face of said napping member, and a non-rotary
passing through said bar, a pair of interior fabric
supporting rings below said shaft, a pair of
napping members mounted to rotate on horizon
tal axes between said rings, means to press said
fabric inwardly against said napping members,
said members having outer flat surfaces adapted
to nap the interior surface of said fabric along
25 a pair of flat areas, and means operated by said
shaft for continuously rotating both of said mem
bers.
14. In an apparatus for napping a tubular
knitted fabric which is continuously rotatable
30 and movable in a longitudinal direction, a central
vertical supporting bar, a horizontal driving shaft
passing through said bar, a pair of interior fabric
supporting rings below said shaft, a pair of nap
ping members mounted to rotate on horizontal
axes between said rings, means to press said fabric
inwardly against said napping members, said
members having outer flat surfaces adapted to
nap the interior surface of said fabric along a
pair of flat areas, and means operated by said
shaft for continuously rotating both of said mem
bers, said upper supporting ring being stationary,
and said lower supporting ring being rotatable on
said central bar with said fabric.
15, In an apparatus for napping the interior
' surface
of
a
longitudinally traveling
tubular
knitted fabric, a central supporting bar, a rotat
ing brush having a flat end napping surface for
engaging a flat area of said fabric, and an aux
ing a cylindrical napping periphery adapted to
rotate in the direction of movement of said fabric,
17. In an apparatus for napping the interior
surface of a continuously traveling tubular knitted
fabric, a rotating ?at-ended member having nap
ping means on its ?at end surface, means to press
said fabric against said member to engage the in
terior surface of said tubular fabric along a ?at
area thereof, and means for adjusting the pres
sure of said napping member against said fabric.
18. In an apparatus for napping the interior
surface of a tubular knitted fabric which is
continuously moved longitudinally and slowly ro
tated at the same time, means to press said fabric
inwardly, a twisting member having a ?at end _,
napping surface for engaging and napping a ?at
area of said fabric, a non-twisting brush spaced
vertically from said rotary napping member, and
means to adjust the pressure of said non-twisting
brush upon said fabric.
19. In an apparatus for napping the interior
surface of a longitudinally traveling tubular
knitted fabric, a central supporting bar, means
to press said fabric inwardly, a rotating brush
having a ?at end napping surface for engaging a
?at area of said fabric, and an auxiliary napping
Wheel within said fabric having a cylindrical nap
ping periphery adapted to engage a vertical line
of said fabric, said brush and wheel being mount
ed to rotate in bearings supported by said cen
tral bar, and means to adjust the pressure of said
auxiliary napping wheel.
HARRY FLEISHER.
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