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Патент USA US3044151

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July 17, 1962
J. c. GASKINS
3,044,141
PILE FABRIC CUTTING MACHINE
Filed Nov. 17, 1958
3 Sheets-Sheet 1
INVENTOR.‘
JACK C. GASKINS
BY:
ATTORNEY
July 17, 1962
J. c. GASKINS
3,044,141
FILE FABRIC CUTTING MACHINE
Filed Nov. 17, 1958
3 Sheets-Sheet 2
INVENTOR.‘
JACK C. GASKINS
96w;
ATTORNEY
July 17, 1962
'J. c. GASKINS
3,044,141
PILE FABRIC CUTTING MACHINE
Filed Nov. 17, 1958
3 Sheets-Sheet 3
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INVENTOR.‘
JACK C. GASKINS
BY :
J
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WW
ATTORNEY
316' t
ice
3,044,141
Patented July ‘1 7, 1962
1
2
3,044,141
FIG. 3 is a schematic view showing the fault detecting
arrangement and control circuit of the pile cutting ma
FILE FABRIC CUTTING MACHINE
Jack C. Gaskins, Lanett, Ala., assignor to Batson-Cook
Company, West Point, Ga., a corporation of Georgia
Filed Nov. 17, 1958, Ser. No. 774,283
6 Claims. (CI; 26-10)
chine of FIG. 1.
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FIG. 4 is a fragmentary top view showing the arrange
ment of a cutter with its guide.
7
This invention relates to a pile cutting machine, and
Referring now more particularly to FIGS. 1 and 2,
that form of the invention herein shown by way of ex
ample may be characterized as having a framework with
more particularly concerns an improved arrangement for
side frames 10 and 11 supported in upright position by
driving and stopping so as to permit high-speed travel of 10 a plurality of cross members such as crossbeam 12. A ‘
‘ roll 13 of uncut fabric or cloth is supported on roller
fabric through such a machine.
pin 14 across the rearward end of the machine, the latter
In the manufacture of pile fabrics, such as velvet and
being journalled in pillow blocks, as at 15, which are
corduroy, parallel piles or ribs of looped threads are
secured to the side frames. From roll 13, the fabric, as
formed on a backing in such manner as to require the tops
of the ribs to be cut open in a ?nishing operation. To 15 indicated by broken line 16, passes over a pair of drag
rollers 17 and 18, each of which is also suitably supported
effect such cutting, a guide is forced lengthwise into each
in pillow blocks, as at 20, on the side frames. Drag on
rib by a pusher as the fabric passes through the machine.
the fabric is regulated in conventional manner by friction
These guides are driven in reciprocating motion from a
bands 21 passing over the friction wheels 22 on both ends
cam shaft, and are each formed with a slot for receiving
a rotating circular cutter, the arrangement being such 20 of each drag roll beyond the side frames, the arrange
ment being such that each band has one end ‘secured to ‘a
that each cutter is freely supported for slight lateral move
ment so as to permit~ its retention within the slot as the
bracket 23 on a side frame ‘and the other end secured to a
suitable variable tensioning device, as at 24. To maximize
guide “feels” its way into a fabric rib. In this manner,
each guide separates the looped threads of each rib and
the peripheral contact surface of each drag ro1ler,.the
properly presents the rib threads to the cutters as the fabric 25 fabric passes about the guide rollers 25 and 26 rotatably
secured between the side frames below drag rollers 17
is pulled through the machine, the ribs being raised and
and 18, respectively, the arrangement being such that
fabric passes from the underside of roll 13, about guide
roller 25, drag roller 17, guide roller 26 and drag roller
Occasionally an irregularity occurs which causes a
guide to pierce the backing or one of the ribs. It is then 30 18 in conventional serpentine fashion. The fabric next
passes between the adjacent crossrods 27 and 28 being
necessary to stop the machine before the rib is cut at the‘
secured between a pair of crank-shaped fabric return
point where the fault occurred. Otherwise, of course, if
levers 29 which are each pivotally mounted to one of the
a guide were to pierce the backing, it would raise the
side frames. Upon stopping of the machine to rectify a
‘backing into one of the cutters; or, if a guide were to come
out of a rib on the top side of the fabric, a skip in the 35 fault, the lever 29 may be pivoted forwardly on crossrod
27 to pull fabric backwardly so as to facilitate correc
cut would result, withthe resulting imperfection neces~
tion. From this point, the uncut fabric passes through
sitating a later cutting by hand.
the guide and cutter assembly, as shown more clearly in
It is one of the objects of this invention, therefore, to
\FIG. 3, and then downwardly about friction drive roller
provide a new and improved pile cutting machine in which,
upon the occurrence of a fault, the fabric travel is auto 40 31. Maximum surface contact between the fabric and
matically stopped with a minimum of over-travel or over
drive. roller 31 is obtained by passing the fabric about
cut so as to allow the backing to fall away clear of the
rotating cutter.
run so as to facilitate fault correction.
It is also one of the objects vof this invention to provide
a new and improved pile cutting machine which is capable
of handling fabric at a high rate of travel with the same
or less over-run, upon actuation of its stopping mech
anisms, than found in conventional low-speed machines
of this type.
Another object of this invention is to provide a new
and improved pile cutting machine in which a fault in
the operation thereof will e?fect a rapid stop‘ in the travel
of the fabric through the machine without severe shock
loads to the drive components as found in conventional
guide roller 32 which is rotatably supported between the -
side frames rearwardly of the drive roller. The fabric
then passes downwardly to crossrod 33 bolted across the
lower part of the machine, and then backwardly through
the entire length of the machine
roll 35 supported on crosspin 36
ported in pillow blocks 37 secured
Considering in more detail the
to form the take-out
that is rotatably sup
to the side frames.
drive arrangement of
the machine, main drive motor 40, which is supported
under drive roller 31 on cross members, such as cross
beam 12, drives countershaft 41 through belt drive 42
between sheaves 43 and 44 secured, respectively, to motor
machines where the high inertia of all moving mechanisms
shaft 45 and countershaft 41. Countersha?t 41 is ro
must be harnessed to effect stoppage of the fabric travel. 55 tatably supported in bearings 46 and 47, which are bolted,
A further object of this invention is to provide a new
respectively, to side frame‘ 10 and side plate 48 that de
and improved pile cutting machine which initiates rotation
pends from offset beam 50. Beam 50 is supported from
of the pile cutters prior to movement of fabric through
the spaced side frame extension arms 51 and 52, the
the machine.
arrangement being such as to de?ne an opening between
" so
Still another object of this invention is to provide a
beam 50 and side frame 10 to receive therethrough the
new and improved pile cutting machine which is simple
belt drive arrangements for-the cam and cutter shafts,
in construction and operation and is well adapted to meet
as will now be seen. Cutter shaft 53‘ is rotated by belt
the demands of economic manufacture.
drive 54 secured between sheave 55 on countershaft 41
Many other objects, features and advantages of this
and sheave 56 on the cutter shaft. Rotatablysupporting
invention will become apparent from consideration of the 65 cutter shaft 53 are spaced bearings 57, 58 and 59, with
following speci?cation taken in conjunction with the ac
bearings 58 and 59 each being suported through a pivot
companying drawings wherein like designators refer to
60 mounted from one of the side frames, and bearing
the same or similar parts throughout, and in which:
57 being supported on o?set beam 50 by way of a similar
FIG. 1 is a side elevation, partly broken away, of a
pivot mount 60, which is partly broken away to show
70 the stationary base 61, pivot pin 62, and upper pivotal
pile cutting machine according to my invention.
FIG. 2 is a vertical section, partly broken away, of
member 63 thereof. Each upper member 63 has an
arm 64 extending rearwardly for releasable engagement
A FIG. 1.
3,044,141
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with a toggle latch 65 and compressing spring 66. Pivotal
4
motion to take-up roll 35 only as fabric is available
movement of the cutter shaft is permitted by conven
from fabric drive roller 31,. the arrangement being such
tional mechanism including release lever 67 which isv
spring loaded :by the over-‘center ‘spring ‘arrangement at
68, as is well understood by those skilled in the art.
In addition to driving cutter shaft 53, motor 4!) also
drives cam shaft 70 which is journalled through pillow
blocks 71 and 72 that are ‘supported from side frames
Y10 and 11, iespectively. For this purpose, sheave 73 is
that as take-out roll 35 increases in diameter, belt slip
page increases commensurately, as is well understood by
those skilled in the art.
For a better understanding of ‘the guide and cutter ar
rangement, reference is now made to FIGS. 3 and 4
mounted on countershaft 41 adjacent ‘sheave 55 for driv
wherein it can be seen that each of the cams 120 of cam
shaft 70 effects slidable movement of a guide pusher 121
on cross support 122 having its camming surface engaged
with a- roller wheel 123 journalled in one end. of the
ing 'belts 75 and sheave 76 at the input to gear reducer
77, the arrangement being such that cam shaft 70 is di
rectly driven from the gear reducer at a lesser angular
pusher. Maintaining the guide pusher wheel against the
of which is journalled on the end of the fabric drive
drives a loosely suported needle-like guide 126 into ‘a
cam and providing for return of the guide pusher is
‘velocity than the cutter shaft.
spring 124 which is adjustably tcnsioned by eyehook 125
The other end of cam shaft 70 is keyed to pinion 15 that is ‘secured to cross support 122. As is well under
gear 80 which drives clutch input gear 81, the hub- 82
stood by those skilled in theart, each guide pusher 121
roller axle 83 by bearing 84. Providing for selective
fabric rib 127 a short length upon each rearward oc—
coupling of the clutch input gear 81 with drive roller axle
currence of the projecting portion of the camrning sur
83 is a generally conventional electromagnetic clutch 86. 20 face. To distribute the load on the cam shaft evenly,
The "outer member of clutch 86 is on annular armature
each of the camrning projections is at a distinct radial
87 that is supported for free axial movement on the
clutch input gear hub by a plurality of studs 88 radially
position. In this arrangement, the loose support of each
guide 126 permits it to shift laterally with the fabric so
secured to the hub and extending inwardly therefrom.
as to keep its cutter 128 aligned in the slot 129 of the
The inner member of clutch 86, including the electromag 25 guide, as will be more clearly understood by reference
net 90, is bolted to side frame 11 by the annular bearing
to FIG. 4;
housing 91 which centers drive roller axle 83 therethrough
Considering the guide fault detecting arrangement uti
by central bearing 92. The intermediate member of the
lized in the present invention, each guide 126 is supported
clutch includes a friction plate 93 which is keyed to axle
at one end by guide pusher 121 and extends rearwardly
83 of the drive roller for rotation therewith. A'n annu 30 over the transverse support bar 130 to pass between upper
and lower contact bars 131 and 132. The uncut fabric
friction plate adjacent armature 87 but resiliently spaced
passes between the upper and lower contact bars from the
lar ring of friction facing material 95 is mounted on the
therefrom 1by coil ‘springs 96 each concentrically posi
rearward end of the machine, receiving a guide in each
tion'ed about one of the armature mounting studs 88. As
rib thereof, and then over transverse member 134 for cut
is Well understood by those skilled in the art, energiza 35 ting of each rib by a rotary cutter 128 in a guide slot 129.
tion of electromagnet 90 causes the armature 87 to be
Each cutter is ‘loosely keyed to the cutter shaft, as at 136,
magnetically pulled against the friction plate 93 so as to
for slight axial movement thereon so as to be retained in
mechanically Couple clutch input gear 81 through fric
the guide slot as the guide shifts slightly to follow the
tion plate 93jto axle 83 of the fabric drive roller.
rib of the fabric passing thereby. This arrangement is
The ‘opposite drive ‘roller axle 97 is provided with a 40 such that each guide 126 is electrically connected to
' generally conventional electromagnetic brake 98' that is
ground potential by being in contact with a cutter 128, a
operable in conjunction with ‘electromagnetic clutch 86
pusher 121 and the transverse guide support bar 130. The
on the other end of'the drive roller, as will hereinafter
upper and lower contact bars 131 and 132, and the rear
be seen. Axle 97 passes through the side frame 10, being
contact bar 138, however, are at a positive potential, being
rotatably supported therein by bearing 1ii0'centered in a connected to a positive source through guide fault detec
housing 101.,which is secured by bolts 102 to side frame
tion relay (‘,139 which actuates upon contact of one of the
‘10. At the outer end of axle 97 is keyed a hub 103
guides 126 with any of the contact bars, 131, 132 or 138,
that-‘is provided ‘radially about the inner face thereof with '
a plurality of inwardly extending mounting studs 105
as will now be seen.
In the control arrangement of ‘the present invention,
for slidable axial movement thereon ‘of the annular arma 50 power is received from a three-phase line 140 to energize
, ture 106. Supported from bearing housing 101 is the
main drive motor 40 through a conventional motor starter
"annular electromagnet 107 which, upon'energization, re-~
tracts armature 106 against a friction plate 108 on the
electromagnet, ‘the armature normally being resiliently
141. ,When the normally open switch '142 is closed, relay
coil 143 of motor ‘starter ‘141 is energized from full-wave
recti?er ‘145 that is connected across the line through single
spaced therefrom byg-springs 109, which are each con 55 phase transformer 146. Motor 40 is thereupon energized
icenti'ically positioned about one of the armature mount
through main contactor 147 of starter 141, and coil 148
of relay 149 is energized through auxiliary contactor '150.
From the‘foregoing arrangement, it can be seen that
Time delay of relay '149 permits the cutters to start turning
rotation of the drive roller is e?ected through the clutch
before drive roller 31 begins to move fabric through the
v‘andcam shaft from main drive motor 40. It will be 60 machine. After suitable delay, contacts 151 of relay 149
noted, ‘however, that for such rotation to be accomplished ' ‘close to complete the circuit from recti?er ‘145 to clutch
not only must the clutch be engaged, but the brake must
brake relay 152. Energization of coil 153 of this relay
be disengaged so’ ‘as; to free the drive roller ‘for rota
closes its. contactor 155 to‘ energize the clutch electro
" tion iin response to rotation of the drive motor through
magnet 90 from recti?er 145, and opens contactor 156
ing-‘studs.
,
V the cam shaft.
,
a
'
Main'drive motor 40 also effects rotation of the take
out roll 35 by, a ‘suitable drive arrangement to the cross
:pih 36. For this purpose 'sheave110'is mounted 'on the _
‘motor shaft '45 for driving belt 111 so as to rotate
~ countershaft '112 ‘through the sheave 113 that is secured
‘ "thereto. a The countershaft is mounted on pillow blocks,
as at '115, secured 1to the side frames and has mounted
thereon pulley ~116ifrom which ‘a ?at belt 117 ‘drives pulley
‘118 secured to the take-out roll crosspin 36,. Belt 117 is
to de-energize brake electromagnet '107, thereby permit
ting fabric drive roller 31 to respond to rotation of the
cam shaft. Energization of clutch-brake relay coil 153
also closes holding contactor !157 which bypassesthe
start buttonto ground, ‘so as to electrically hold-in relay
coil 143 of motor starter .141. Shut-down of the machine
is provided for by actuation of the normallyclosed switch
158 in series between the positive side 'of recti?er 145 and
relay coil 143, thereby opening both main contactor 147
preach design as to permit slipping,‘ thereby transmitting 75 and auxiliary contactor 150 of the motor starter.
3,044,141
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As heretofore described, engagement of clutch and dis~
engagement of brake permits cam shaft 70* to transmit
clutch on one of said walls for coupling said shaft and
motion to fabric drive roller 31 through cam shaft pinion
80 and input gear 81 so as to pull fabric onto the guides
and under the cutters where the ribs are cut open. Should
connected to the other of said walls, switch means for al
any guide pierce its associated rib and make electrical
to said brake and said clutch, a circuit for actuating said
contact with top contact bar 131 or pierce the fabric back
ing and make electrical contact with bottom contact bar
:132, or be dislodged and contact the rear contact bar 138,
an electrical circuit would be completed through coil 16%
of guide fault relay 139 to thepositive side of recti?er
switch means, said circuit being connected to said source
of current and to said contact bars and said guides where
145 so as to open fault relay contactor 162.
time delay means for preventing the coupling action of
said clutch until said ‘motor has been energized for a pre
said roller, an electromagnetic brake for said roller and
ternately connecting said brake and said clutch to said
source of current whereby current is alternately‘supplied
by a ?ow of current actuates said switch means when any
one of said guides contacts either of said contact bars to
brake said roller, said shaft reciprocating said guides, and
Since the
energizing circuit of the clutch-brake relay coil 153 is
determined length of time.
'
completed to ground through fault relay contactor 162,
3. A pile fabric cutting machine comprising a frame '
opening thereof effects de-energization of the clutch-brake 15
having a pair of opposed walls, a drive roller mounted
relay, thereby de-energizing clutch electromagnet 90 so
between said walls, a source of fabric having pile loops,
as to separate the relatively high inertia of the cam shaft
aligned transversely spaced guides on said ‘frame for
with its associated mechanisms from the drive roller. Si
engaging said loops, spaced contact bars carried by said
multaneously, clutch-brake relay contactor 156 closes so
as to energize brake electromagnet 107, thereby permitting 20 frame below and above said guides so as to be selectively
contacted thereby upon misalignment of any of said guides,
the brake to quickly stop rotation of the drive roller and
said fabric being fed from said source of fabric'between
the travel of the fabric through‘ the machine.
By utilizing the brake and clutch arrangement of the
said contact bars, said roller being spaced below said
contact bars whereby said fabric passes around one of
rate of 20 yards per minute, with the same or less fabric 25 said contact bars and diverges from said guides toward
over-travel as was heretofore acceptable in stopping con
said roller, said fabric being driven by said roller, rotary
cutters respectively associated with said guides, va source
ventional low-speed machines operating at 10 yards per
minute. In addition, this arrangement permits the high
of current, a motor for driving said roller, an electro
present invention, it is possible to maintain a fabric travel
magnetic clutch connected between said motor and said
roller, an electromagnetic brake for said roller, switch
means for connecting and disconnecting said brake and
inertia of the motor, cutter, and guide driving mechanisms
to be brought slowly to halt, thereby avoiding the severe
shock loads to these mechanisms that result from conven
tional travel stopping arrangements.
said clutch to said source of current whereby current is
alternately supplied to said brake and said clutch, a circuit
for actuating said switch means, said circuit being con
nected to said source of current and between said contact
bars whereby a ?ow of current actuates said switch means
when any one of said guides contacts either of said con
tact bars to brake said roller, and means for reciprocating
From the foregoing it will be apparent that I have
provided a new and improved pile cutting machine which
is well adapted to ful?ll the aforestated objects of the
invention. Moreover, whereas the invention has been de
scribed particularly with reference to a preferred embodi
ment thereof, it will be apparent to those skilled in the
art to which the invention most nearly appertains that
additional embodiments and modi?cations thereof may be
resorted to without departing from the spirit or scope of
the invention as de?ned by the appended claims.
I claim:
1. In a pile fabric cutting machine, a cam shaft, a plu
rality of guides, means responsive to rotation of said cam
shaft for driving said guides into the piles of a fabric pass
ing through the machine, a cutter shaft, a plurality of
said guides, said means for reciprocating said guides in
cluding cams for driving said guides, spring means for
maintaining said guides in contact with said cams, a shaft
carrying said cams, said shaft being connected between
said motor and said clutch whereby said clutch and said
shaft are driven when said motor is actuated.
4. In a pile fabric cutting machine, a plurality of guides
arranged in a horizontal plane, a plurality of cams for
moving said guides axially, a cam shaft carrying said earns,
a plurality of circular knives arranged adjacent said guides
‘for cutting loops of yarnsvcarried by a base fabric and
shaft, means for detecting faults in the operation of said 50 inserted on said guides, a knife shaft carrying said knives,
cutters on said cutter shaft each associated with one of
said guides, a motor driving said cam shaft and said cutter
guides, a drive roller for moving fabric through the ma
chine, means coupling rotary motion of said cam shaft
to said drive roller including a selectively operable elec
a motor for rotating said knife shaft and said cam shaft
simultaneously, a roller for moving said base fabric, an
tromagnetic clutch, a selectively operable electromagnetic
roller to said motor, an electromagnetic brake for arrest
brake secured to said drive roller, and circuit means re
sponsive to operation of said fault detecting means for
actuating said clutch so as to mechanically disconnect
said fabric drive roller from said cam shaft, said circuit
means also operable to simultaneously actuate said brake
electromagnetic clutch for coupling when actuated said
55
ing the rotation of said roller when said brake is actuated,
switch means for selectively actuating said clutch while
deactuating saidvbrake and actuating said brake while
deactuating said clutch, contact bars adjacent‘said guides
for making electrical contact with any one of said guides
in response to said fault detecting means so as to stop 60 when the guide is misaligned, a fault‘ detecting circuit
rotation of said drive roller.
connected to said guides and said bars and to said switch
2. A pile fabric cutting machine for cutting pile loops
means for actuating said switch means to deactuate said
in fabric comprising a frame having a pair of opposed
clutch and actuate said brake when electrical contact is
walls, a drive roller mounted between said walls, a source
made between. any one of said guides and said contact
of said fabric, aligned transversely spaced guides on said
frame for engaging said loops, spaced contact bars carried
bars, and time delay‘ means connected to said switch
means and connected to said motor for preventing the
by said frame below and above said guides so as to be
actuation of said coupling means by said switch means
contacted thereby when any of said guides are misaligned,
until said motor has been energized.
said fabric being fed from said source of fabric between
said contact bars, said roller being spaced below said con 70 5. In a pile fabric cutting machine of the class having
guides for receiving loops of the yarn carried by a base
tact bars whereby said fabric passes around one of said
contact bars and diverges from said guides toward said
roller, said fabric being driven by said roller, rotary cutters
fabric, the guides being subject to misalignment when a
fault occurs, a cutter shaft, a plurality of rotary cutters
on said cutter shaft and respectively associated with said
respectively associated with said guides, a shaft, a source of
current, a motor for driving said shaft, an electromagnetic 75 guides for cutting the loops thereon, a rotatable camshaft,
3,044,141
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meansfor rotating said ‘cutter shaft and said cam shaft
adapted to actuate said guides, a rotatable fabric drive
simultaneously, a plurality of cams on said camshaft
adapted ‘to actuate said guides, a rotatable fabric drive
roller for advancing said ,fabric, a selectively’ operable
electromagnetic clutch for coupling the rotation of said
roller for advancing said fabric, a selectively operable
electromagnetic clutch for coupling the rotation ‘of said
cam shaft with the rotation of said drive roller, a selec
cam shaft with the rotation of said drive roller, a selec
drive roller and circuit means actuated by the misaligne
ment of any one of said guides for simultaneously disen
gaging said clutch and engaging said brake so as to stop
'tively operable electromagnetic brake connected to said
tively operable electromagnetic brake connected to said
drive roller and circuit means actuated by the misalign
the rotation of said drive roller independently of said cam _
ment of any one of said guides for simultaneously disen
gaging ‘said clutch and engaging said brake so as to stop 10 shaft, and a time delay means in circuit with said clutch
and said brake for preventing engagement of said clutch
the rotation of said drive roller independently of said cam
and disengagement of said brake until said motor has
shaft.
been actuated for a predetermined period of time.
6. ‘In a pile fabric cutting machine of the class having
guides for receiving loops of the yarn carried by a base
fabric, the guides being subject to misalignment when a 15
fault occurs, a cutter shaft, a plurality of rotary cutters
on said cutter shaft and respectively associated with said
guides for cutting the loops thereon, a rotatable cam shaft,
means for rotating said cutter shaft and said cam shaft ' 29
simultaneously, a plurality of cams on said cam shaft
References Cited in the ?le of this patent
UNITED STATES PATENTS
‘
806,204
87 6,462
Stans?eld ___________ __‘__., Dec. 5, 1905
Keighley et a1 __________ __ I an. 14, 1908
907,334
Gildard ______________ __ Dec. 22, 1908
2,642,169
Hutchison‘____________ __ June 16, 1953
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