close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3098353

код для вставки
July 23, 1963
R. KRAMER ETAL
3,098,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet 1
_
g»
6 16 6'19 4,
INVENTORS.
Raff’ Kramer
BY ?rm/z}: ?rez/zkzg’er
July 23, 1963
R. KRAMER ETAL
3,098,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet 2
WM Q/ 49/);
July 23, 1963
R. KRAMER ETAL
3,098,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet 3
INVENTORS.
[Ea/f Kramer
By Erwin ?red/{n e14
Frz'fz' WP'f/ie/rz G'ezzéez
?led 4/0964
July 23, 1963
R. KRAMER ETAL
3,098,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8. 1960
8 Sheets-Sheet 4
INIf/ENTORS.
Raff’
?’raz'rzé?
BY Era/z}: Breilffzz er
Fri/z MFA e412 Géréer
M Z.»/ a; /,<
July 23, 1963
R. KRAMER ETAL
3,098,345‘
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8. 1960
8 Sheets-Sheet 5
‘
54
1
52
__
55’
W. -1 -'
. \
INVENTORS,
1205!‘ Kramer
-
I!
By Erna}: Ere/'6'" er
Fri/2 My?efm Gehéer
Wop/4% 43/,‘
July 23, 1963
R. KRAMER \ETAL
3,093,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet 6
INVENTORS.
Rap,‘ Kid/mar
BY Erwin ?rel'z‘zkzger
?vfz Mf?elrz Ger-Aer
July 23, 1963
R. KRAMER ETAL
3,098,345 '
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet '7
INVEN TORS
£5.” am”H5“. @494:
Z6Z”Z
WP
2
a
July 23, 1963
R. KRAMER ETAL
3,093,345
SPINDLE DRIVE ARRANGEMENT FOR A SPINNING MACHINE AND THE LIKE
Filed Aug. 8, 1960
8 Sheets-Sheet 8
IIY/VENTORS.
190/)?5’ram er
BY Era/(r2 Brei/lkger
3,098,345
Fatented July 23, 1963
2
a coordinated spindle on the support frame, and actuates
3,098,345
SPWDLE DRIVE ARRANGEMENT FOR A
SPINNING MAQHINE AND THE LIKE
Rolf Kramer, Stuttgart-Feuerbach, Erwin Breitinger,
Waiblingen, Wurtternhcrg, and Fritz Wilhelm Gerber,
Kirchheim, Unterteck, Germany, assignors to ?fth‘
Kugellagerfabriken Gesellschaft mit beschriinlrtcr
Haftung, Stuttgart-Bad Cannstatt, Germany, a Ger
man company
Filed Aug. 8, 1960, Ser. No. 48,103
Claims priority, application Germany Aug. 2% 1959
12 Claims. (Cl. 57-102)
rotation of the spindle.
The exact nature of this invention as well as other
objects and advantages thereof will be readily apparent
from consideration of the following detailed description
of preferred embodiments thereof relating to the annexed
drawings, in which:
FIG. 1 shows a portion of a spinning or twisting frame
including a plurality of individual spindles and a drive
arrangement for actuating rotation of the spindles, the
frame being shown in plan view;
FIG. 2 shows the apparatus of FIG. 1 in side-eleva—
This invention relates to textile machines, and more
particularly to a spindle drive arrangement for a spin
tional section on the lines II——II;
FIG. 3 shows a modi?ed drive arrangement for a spin
15 ning or twisting frame in a view corresponding to that
of FIG. 2;
In a [known type of spindle drive arrangement, a drive
FIG. 4 illustrates an additional modi?cation of the
shaft driven [by an electric motor or other prime mover
drive arrangement of FIG. 2.;
is mounted on the machine frame and carries a plurality
FIG. 5 shows a spinning or twisting frame equipped
of drive wheels each vbeing associated with one of a plu
rality of spindles which are rotatably mounted on the 20 with another embodiment of the drive arrangement of the
invention, the frame being shown in fragmentary plan
frame in an elongated row parallel to the shaft. Rotary
view;
movement is transmitted from the wheels to the respec
FIG. 6 is a side-elevational sectional view of the appa
tive spindles by motion transmitting members. In the
ratus of FIG. 5, the section being taken on the line
event of mechanical failure of the motion transmitting
ning or twisting machine.
train associated with one of the spindles, and also during 25 VI-VI;
FIG. 7 illustrates a spinning or twisting frame provided
normal operation of the machine, it is sometimes neces
with yet another embodiment of the drive arrangement of
sary to stop rotation of individual spindles. In the in
the invention in the view corresponding to that of FIG. 5;
terest of economical operation of the machine, it is pre
FIG. 8 shows the apparatus of FIG. 7 in side-eleva
ferred that the other spindles maintain their rotary move
tional section on the line VIII—VIII;
ment while one is being arrested.
In the conventional arrangement of a motion trans
mitting train interposed between the drive shaft and each
of the spindles, it is not readily possible to arrest a single
spindle without adversely affecting the rotary speed of the
other spindles. Various devices have been proposed
to overcome this condition, but those that are effective re
quire relatively complex apparatus involving relatively
FIG. 9 is a side-elevational sectional view of a further
drive arrangement of the invention for a spinning or twist
ing frame, of which only those elements in immediate co—
operation with the device of the invention are shown, the
view being in side-elevational section;
FIG. 10 is a fragmentary front-elevational view of the
spinning frame and the drive arrangement of FIG. 9; and
FIG. 11 shows the arrangement of FIG. 10‘ in plan
high ?rst cost, and are relatively expensive to maintain
v1ew.
in working condition.
40
Referring now to the drawing and initially to FIGS. 1
A primary object of the invention is the provision of a
and 2, there is seen a drive shaft 1 which is mounted in
spindle drive arrangement for a spinning machine and the
the support frame (not shown) of a spinning or twisting
like, in which individual spindles can be arrested without
machine and is driven by an electric motor 40 in a well
affecting the rotary speed of the other spindles on the
known manner. A plurality of spindles 2 of which only
machine.
45 four are visible in FIG. 1 are arranged on the machine
Another object is the provision of such an arrangement
frame in a row along the shaft 1 for rotation about paral
which is simple in structure, and thus of relatively low
lel respective axes laterally offset from the drive shaft and
cost, and easy to maintain in good working condition.
extending in respective planes which are radial with re
A further object is a spindle drive arrangement which
is composed of a minimum number of moving parts so as 50 spect to the shaft.
to simplify maintenance of the drive, and to reduce the
expense of maintenance operations.
An additional object of the invention is the provision
of a spindle drive arrangement which is very compact
Wheel shaped friction disks 3 with beveled friction
rims are mounted on the shaft 1 adjacent each of the
radial planes, and each disk rim frictionally engages a
friction face on a rotary member v8 which is hereinafter
and occupies as little space as possible so that a large 55 referred to as a friction wheel. As best seen from FIG.
2, the friction wheel 8 has a conical friction face which is
number of spindles can be mounted on a relatively small
in abutting engagement with the matingly shaped friction
frame, yet without crowding the structural elements of
rim on the disk 3. The wheel ‘8 is journaled on a shaft
the drive, and with all parts readily accessible for repair
‘7 by means of ball bearings 10 and carries a coaxial pulley
and replacement as required.
member ‘9. The shaft 7 is supported by a bracket 6
Yet another object is the provision of a drive arrange 60 which is mounted on the spindle rail 4, an element of the
ment of the type described, in which the drive does not
spinning machine frame.
induce vibrations of the spindles and does not interfere
The cylindrical stationary portion of the spindle 2 is
with their resilient response to variations in the tension of
fastened to the spindle rail 4 by a nut 5 which threadedly
the thread or yarn which is being wound.
engages a {foot portion of the spindle 2. The movable
With these and other objects in view, the invention 65 portion of the spindle 2 includes a bobbin carrier 2" and
provides a support frame, and a drive shaft rotatably
mounted on the frame. A wheel is fastened to the
a whorl 2' over which an endless drive belt 11 is trained.
ber for joint rotation about a common axis.
ably secured to a block 13 which in turn is adjustably
fastened to the spindle rail 4 by a shoulder screw 14‘.
The belt is driven by the pulley member 9.
shaft for driving engagement with another rotary mem
The bracket 6 has the shape of a bell crank lever the
ber. The rotary member is connected to a pulley mem 70 pivot of which is constituted by a resilient rod 12 adjust
A belt is
trained over the pulley member and the whorl portion of
3,098,345
3
ll
The longer arm of the bell crank lever 6 arches around
friction face of the brake member portion 20' away from
the drive shaft 1, and the free end of the longer lever
the whorl 2' without however tensioning the belt 11.
arm carries the shaft 7 with the wheel 8 and pulley mem
Upon reinsertion of the movable spindle portion, or
ber 9. The short arm 6' of the lever 6 extends at approxi
whenever otherwise the spindle is ready to resume rotation,
mately right angles to the long arm. It is formed with an
the handle 17 is released, and the belt is tensioned again.
opening through which a bolt 16 passes. The bolt thread
As seen from FIG. 2, the pulley member 9 has a barrel
edly engages a mating bore in the block 13 and is axially
shaped belt face between two guide rims. The belt 11 will
adjustable in the bore. A helical coil spring 15 coaxial
tend to assume a position on the portion of the barrel
with the bolt 16 has two ends respectively abutting against
shape which has the greatest diameter, and will rise from
the head of the bolt 16 and the arm 6' of the lever 6, 10 the previous position on the arms of the T-shaped portion
and urges the lever 6 to rotate clockwise as viewed in
29' of the brake member. It will be understood that
FIG. 2.
catches may be provided on the housing 21 to hold the
An angularly bent operating handle 17 is hingedly at
handle 17 in a position in which the brake is applied, and
tached to the head of the shoulder screw 14 by means of a
in a position in which the brake is released, but the belt
pivot pin 13. A plunger rod 19 which is slidably guided 15 still is not tensioned so as to permit the operator to take
in a bore of the spindle rail 4 is loosely interposed between
his hands from the handle 17, and to perform necessary
a portion of the handle 17 adjacent the pivot pin 18 and
meltlintenance or other operations while the spindle 2 stands
the shorter arm 6’ of the lever 6.
A brake member is mounted on each shaft 7 between
the two strands of the belt 11. Only one brake member
has bceen illustrated in FIG. 1 in order not to crowd
sti
.
By suitably adjusting the position of the block 13, a
portion of the resilient strength of the rod 12 may be used
to contribute to the tension of the ‘belt 11. One compo
nent of the resilient force of the rod 12 is utilized for
providing {the contact pressure between the disk 3 and
the wheel 8, and another component is applied to the
belt in cooperation ‘with the helical spring 15. Both com
the drawing, but it will be understood that a drive arrange
ment as shown in FIG. 2 in elevational section is associ
ated with each of the four spindles seen in FIG. 1.
The brake member has an arm portion 20 that radially
extends from the pin 7 toward the whorl 2’ of the associ
ponents are adjustable as to the force applied and the
ated spindle 2, and a front portion 20' having the approxi
direction of the ‘force by ‘the adjustable mounting of the
mate shape of an inverted letter T depending from the
block 13 on the rail 4. The belt tension is adjustable
arm portion 20. The central or stem portion of the T
further by axially shifting the bolt 16 the head of which
shape has a friction face for braking engagement with the 30 compresses the spring 15.
whorl 2’ between the two strands of the belt 11, and the
In the embodiment of the invention illustrated in FIGS.
two arm portions of the T-shape extend on either side of
1 and 2, all the elements of the drive mechanism are
the stem portion under the two strands of the belt 11.
readily accessible to the operator for maintenance pur
The entire drive arrangement is enclosed in a remov
able housing 21 not shown in FIG. 1 which is mounted on
the spindle rail 4 and from which the bobbin carrier 2"
poses as soon as the housing 21 is removed.
The drive
shaft 1 extends in front and along the spindles 2, and the
friction wheels 8, pulley members 9, and belts 11 are
and the handle ‘17 project.
mounted above the ‘drive shaft in an extremely compact,
The aforedescribed device operates as follows:
yet freely accessible assembly. Replacement of belts 11,
The resilient rod 12 is fastened to the block 13 the
for example, is readily performed without tools.
position of which is adjusted in such a manner that the 40
If access to the spindles 2 is of primary importance
friction wheel 8 is urged against the corresponding beveled
rim of the disk 3 by the bell crank lever shaped bracket
6.
The force of the spring 15 urges the lever 6 to move
in a clockwise direction about the pivot formed by the
under speci?c operating conditions, the arrangement of
the invention illustrated in FIG. 3 is preferred. This
arrangement is in many respects a mirror image of the
drive arrangement shown in FIG. 2, with the drive shaft 1
rod 12 and thus tensions the belt 11.
arranged behind an otherwise identical row of spindles
The action of the shorter lever arm 6' on the plunger 45 2 when considered from the operator’s position on the
rod .19 if not restrained by the belt 11 urges the handle
right of the spinning machine as viewed in FIG. 3. The
17 to pivot clockwise about the pin 18, but pivoting move
bracket 6a which carries the friction wheel 8 and the
ment of the handle is limited by abutment of opposite con
pulley member 9 for the belt 11 is substantially identical
tact faces on the handle and on the head of the shoulder
in structure and function with the bracket 6 shown in
pin 14. In the event of belt ‘failure, the lever 6 can move
FIGS. 1 and 2, but the means for moving the bracket 6
from the position illustrated until the underside of the
for relieving the tension of the belt 11 are different to
shorter lever arm 6’ abuts against the rod 19 from which
suit the reversed position of the operator.
it is normally separated by a short distance as shown in
The shaft 7’ on which the wheel 8 and the pulley
FIG. 2.
member 9 are rotatable extends upward through the arm
When it is desired to arrest the rotary movement of
20 of the brake member and outside through a slot in
the spindle 2, the handle 17, the free end of which faces
the spinning machine operator, is moved in the direction of
the arrow A toward the housing 21, thereby raising the
the housing 21. The outwardly projecting portion of
the shaft 7’ carries a knob 22. When the knob 22 is
moved in the direction of the arrow B ‘toward the spindle
rod 19 as indicated by an arrow. The ensuing counter
2, the belt tension is relieved, and the spindle is braked
clockwise movement of the bracket 6, as viewed in FIG. 60 to a standstill in the same manner as explained above in
2, causes displacement of the shaft 7 in the direction of the
connection with the operation of the embodiment of the
arrow B toward the spindle 2.
invention illustrated in FIGS. 1 and 2. The knob 22 is
As the belt 11 thereby loses its tension, it slips on the
located behind the row of ‘bobbin carriers 2" but it is
pulley member 9, the whorl 2', or both, so that the bobbin
still within easy reach of the operator without requiring
65
carrier 2" is not driven any longer. As the pulley mem
him to walk to the back of the machine. The front of
ber 9 further approaches the whorl 2’, the friction of the
the machine is practically ?ush with the bobbins being
belt 11 on the pullley member and the whorl becomes so
wound.
small as to be overcome by the weight of the belt which
FIG. 4 illustrates another modi?cation of the drive
drops on the arm portions of the brake member portion
20’. Upon continued movement of the handle 17, the 70 arrangement of the invention in side-elevational section
corresponding to the views of FIGS. 2 and 3. The spin~
friction face on the stern portion of brake member por
dle mounting is of the well known type in which the sta
tion 20' is brought into engagement with the whorl 2’, and
tionary portion of each spindle 2 is partially passed
the spindle is stopped. If it should be desired to with
draw the movable spindle portion from the stationary part,
through a corresponding opening ‘of the spindle trail 4’,
the handle 17 is then slightly relaxed so as to move the
and is axially secured in the rail by means of an arrange
3,098,345
6
spindle 2.
and 6, and engages a driving friction disk 3" on the
shaft 1.
The interengaged contact faces of the disk 3" and the
wheel 31' are provided with two radially spaced rows of
Since the spindle rail 4' is not conveniently located
for mounting the bracket 61) thereon, a supporting rail
23 is provided which is an element of the rigid frame
projections of approximately elliptical cross section. On
the beveled rim of the disk 3", the long axes of the ellipses
extend approximately radially, and the projections in the
structure of the machine, not otherwise shown. The
block 13 is mounted on the rail 23 and maybe adjustable
radially inner row are circumferentially offset relative to
those of the radially outer row so that the projections
ment 5’ ‘of a flanged bushing and nut. The bracket 611
carries the friction wheel 8 and pulley member 9 from
which the belt 11 extends to the whorl portion 2' of the
thereon, in the same manner as discussed above.
To 10 in the two rows are staggered as best seen from FIG. 8.
provide the necessary tension in the belt .11, a leaf spring
24 is bent into a U-shape and inserted in this pre
stressed condition between the block 13 and the shorter
arm of the bracket 6b in such a manner that one leg of
The projections on the wheel 31' are correspondingly
staggered for smooth meshing of the projections and inter
vening recesses on the contact faces regardless of the
length of the belts 11.
To permit some compensation for unequal length
the U-shape lies against the block and the other leg 15
changes of the two belts 11 associated with a single pulley
against the bracket arm. The tensioning force of the
spring 24 can be adjusted by means of a contact screw
member 3", the leaf spring 32 is fastened to the support
25 which is axially adjustable in the shorter bracket arm
33 by bolts and can be shifted on the bolts in the direc
and presses against the free end of the spring 24.
tion of the axis of the shaft 1. The axial length of the
While means ‘for moving the bracket ‘6b toward the 20 projections on the disk 3" and the wheel 13' is such as
spindle 2 have not been illustrated for the sake of clarity,
to permit axial movement of the spring 32 without impair
it will be understood that the drive arrangement of FIG.
ing motion transmitting engagement between the disk and
4 is compatible with both the handle 17 and the asso
the wheel. The embodiment of the invention shown in
ciated motion transmitting elements as shown in FIGS.
FIGS. 7 and 8 may also be equipped with the cup spring
1 and 2, and with the arrangement of an extended shaft 25 arrangement shown in FIG. 10 which will be described
7' and a knob on the shaft as shown in FlG. 3.
The
operation of the apparatus illustrated in FIG. 4 is basical
ly the same as described hereinbefore.
presently.
'
The arrangement of projections and corresponding re—
cesses on the disk 3” and wheel 31’ may be modi?ed
FIGS. 5 and 6 show another embodiment of the spin
within wide limits without exceeding the scope of this
dle drive arrangement of the invention in which the spin 30 invention. The specially shaped contact faces are prefer
dles are mounted in a spindle rail 4' in the same manner
ably separate structural elements which are releasably
as in the embodiment of FIG. 4.
mounted on the basic disk or wheel structure as by solder
A friction disk 3'
which is associated with each one of the spindles 2 and
ing of suitably shaped metallic annular or segmented face
is ?xedly mounted on the shaft 1 has a beveled friction
elements to the basic structure. Both metallic materials
rim which is a separate structural element mounted on 35 and non-metallic material, such as molded polyamide
the basic disk. The friction rim is shaped in the manner
of a spiral bevel gear with alternating projections and
recesses extending from points along the circumference
of the rim in a radially inward and circumferential di
rection on the conical rim surface.
The friction wheel
31 is shaped to mate with the disk 3'. The con?guration
of the interengaging projections and recesses in the faces
of the disk 3’ and the wheel 31 is such that a tangential
displacement (of the wheel 31 relative to the disk 3-’ due
material, have been found useful for the contact faces.
The choice of a material is normally determined by
speci?c operating requirements.
A ?nal example of an embodiment of the drive arrange
ment of the invention is shown in FIGS. 9 to 11, which
illustrate the drive arrangement and associated other ele
ments of a spinning machine in side-elevational section,
front elevation, and plan view respectively. A row of
spindles 2, each having a whorl portion 2’ and a bobbin
to stretching of the belt 11 will not interfere with smooth
45 carrier 2" extends along a drive shaft 1, and the individual
meshing of the disk 3' and wheel 31.
spindles are mounted on a spindle rail 4' as described
The wheel 31 together with the pulley member 9 is
above.
mounted on a bracket constituted by three elements: a
A plurality of friction disks 3, each of which is asso
stationary support 33 on the machine frame; a ?at leaf
ciated with one spindle 2, is mounted on the shaft 1.
spring 32, the major plane ‘of which is parallel to the axes
The disks are axially slidable on the shaft and spaced
of the disk 3' and wheel 31, and which has one end
from each other in the operating condition of the drive
fastened to the support 33; and a block 34 secured to the
arrangement as the spindles 2 are spaced on the rail 4'.
other end of the leaf spring 32. The spring 32 is pre
The disks 3 have beveled rims which are in driving engage
stressed so as to exert belt tensioning pressure on the
ment with conically shaped friction wheels 8’. The fric
pulley member 9 in the direction of the arrow D trans
tion Wheels are journaled in a portion 36 of the frame
versely of the axis of the shaft 1.
of the spinning machine which extends parallel to the
Because of the orientation of its major plane at right
shaft 1. Each wheel 8' is ?xedly connected to a pulley
angles to the plane of FIG. 6, the spring 32 cannot provide
member 9' over which a belt 11 is trained for transmitting
resilient contact pressure between the disk 3' and the
the movement of the shaft 1 to the spindle 2. Firm
wheel 31. Because of the corrugated shape of the con
60 engagement of the disk 3 with the wheel 8' is provided
tact faces, strong contact pressure between these elements
by a cup spring 35 which is freely movable on the shaft 1.
is not always required. If desired, a cup spring arrange
The cup spring abuts against a ?xed collar 37 on the
ment as shown in FIG. 10 and described hereinafter may
shaft 1 and axially presses the disc 3 against the wheel 8’.
be provided to urge the disk 3’ and wheel 31 against each
As best seen from FIG. 11, strands of two belts asso
other in the direction of the axis of the shaft 1.
65 ciated with juxtaposed spindles run side by side in oppo
FIGS. 7 and 8 illustrate a drive arrangement in which
site directions. In the drive arrangement shown in FIGS.
a single friction wheel 31' transmits power for driving
9 to 11, a bar 27 is mounted on a stationary element 30
two spindles by means of individual belts 11, the modi?ed
of the spinning machine frame, and is adjustable thereon
arrangement being shown in plan view and side-elevational
in the direction of the arrow C. The bar 27 longitu
section respectively.
dinally extends parallel to the axis of the shaft 1.
A double pulley member 9" is coaxially superimposed
Between the strands of two belts 11 of juxtaposed
on friction wheel 31' and actuates travel of two belts 11
spindles 2, a tension roller 26 is mounted on a bracket
over respective whorl portions 2' of two spindles 2. The
23 which is pivoted to the bar 27 by a horizontal pin 28’
substantially parallel to the main direction of movement
friction wheel 31’ is supported by a bracket arrangement
substantially identical with that illustrated in FIGS. 5 75 of the two belt strands between the spindle 2 and the
3,098,345
7
8
pulley member 9'. The axis of rotation of the tension
roller 26 is radial with respect to the pin 28’ and sub
stantially upright. The force of gravity thus tends to
tilt the roller 26 into engagement with one of the belts
The examples of the invention illustrated and de
11.
To increase the force exerted by the roller 26 on the
scribed are representative of the relatively simple, rugged
and inexpensive drive arrangements to which the present
invention lends itself. They are extremely compact, yet
permit ready access to all working parts for inspection
or maintenance purposes.
belts 11, a Weight 29 is suspended from the bracket 28.
A belt interposed between the driving elements and
As seen in FIG. 11, the tension roller 26 is tilted into
engagement with the belt 11 of the left spindle 2. The
the driven spindle prevents the transmission of vibra
tions from the drive to the spindle, and permits the spin
contact face of the roller is of conical shape so that in
the tilted position shown the plane of contact between the 10 dle to respond with some resiliency to variations in the
belt 11 and the roller 26 is approximately tangential rela
tension of the thread or yarn which is being wound
tive to the roller face. The roller tensions the slack
thereon.
strand of the belt 11 of the left spindle 2 by de?ecting
It should be understood, of course, that the foregoing
it toward the tight strand.
disclosure relates to only a preferred embodiment of the
It will be understood that there is one tension roller
invention, and that it is intended to cover all changes
26 interposed between each pair of belt strands of adja
and modi?cations of the example of the invention here
cent spindles. The presence of a second roller 26 is
in chosen for the purpose of the disclosure which do not
indicated by the corresponding de?ection in the slack
constitute departures from the spirit and scope of the
strand of the belt trained about the whorl of the right
invention set forth in the appended claims.
spindle in FIG. 11, the belt being shown by a fully drawn
What is claimed is:
line.
1. ‘In a textile machine, a drive shaft mounted for
When it is desired to reverse the direction of spindle
rotation, wheel means carried by said shaft, a support,
a spindle mounted on said support, said spindle having
rotation, and thus of the belt movement, the bar 27 on
which all tension rollers 26 are mounted is shifted on
a whorl portion, a rotary member mounted on said sup
the stationary element 30 in the direction of the arrow C 25 port for frictional engagement with said wheel means
in FIG. 11. The pin 28’ of each tension roller bracket
to be rotated by said wheel means, a pulley member to
23 is thereby shifted beyond a point of vertical alignment
be jointly rotated with said rotary member, belt means
with the plane of contact between the roller 26 and the
trained about said pulley member and whorl portion,
belt 11, and the roller topples over into a position of
bracket means mounted on said support and swingably
cooperation with the opposite belt strand. The two 30 supporting said rotary member and pulley member for
positions of the bracket, pin, and roller are outlined in
movements of said pulley member toward and from
FIG. 10 in broken and chain-dotted lines respectively.
said whorl portion, and means ordinarily urging said
The resulting de?ected shape of the belt 11 of the right
pulley member away from said whorl portion for tension
spindle, as viewed in FIG. 11, is shown in a broken line
ing said belt means.
with arrows indicating the reversed direction of belt move 35
2. In the machine according to claim 1, said wheel
ment. Again, the now tight strand is straight, whereas
means, spindle, rotary member, pulley member, belt
the slack strand is de?ected by the tension roller 26.
The tensioning force exerted by the roller 26 on the
belts 11 can be controlled by varying the tensioning
means, bracket means, and pulley member-urging means
constituting a unit, said machine including at least one
more unit substantially identical with said ?rst named
weight 29, by replacing the weight by an equivalent spring 40 unit.
arrangement, or by supplementing the dead weight ar
3. In the machine according to claim 2 a housing
rangement illustrated by additional biasing springs.
partly enclosing said units, and means for individually
Preferably, the movement of the bar 27 which simul
moving each of the pulley members of said units against
taneously shifts the tension rollers 26 of all spindles 2
the force of said pulley member-urging means, said
of a row is linked with the shifting of the direction of 45 means for moving said pulley members being constituted
rotation of the shaft 1. In the embodiment of the inven
by as many members as there are units, each of said
tion illustrated in FIGS. 9 to 11, the stationary machine
moving members projecting from within the housing to
frame element 30 carries a reversing switch 38 for the
be accessible from outside the housing.
drive motor of the spinning machine which actuates ro
4. In a machine as set forth in claim 1, pivot means
tation of the shaft 1 as shown in FIG. 1. The switch 50 on said support, said bracket means being secured to
has a projecting actuating lever. A pin 39 is mounted
said pivot means for swinging movements in a plane
on the bar 27 and actuates the switch lever during move
transverse of the axis of rotation of said drive shaft.
ment of the bar in the direction of the arrow C and
5. In a machine as set forth in claim 1, resilient fas
opposite thereto. It thereby reverses the direction of
tening means interposed between said bracket means and
movement of the shaft 1. It will be understood that 55 said support for pivotal movements of said bracket means
the switch circuit may additionally contain relays, con
in a plane transverse of the axis of rotation of said drive
tactors and other electrical elements conventionally em
shaft.
ployed with electrical motors capable of being reversed.
6. In the machine according to claim 5, said resilient
These circuit elements which in themselves do not form
means being prestressed so as to act as said pulley mem
part of this invention have not been further illustrated.
60 ber-urging means.
If it is desired to arrest one of the spindles of the
7. In a machine as set forth in claim 1, said pulley
spinning machine shown in FIGS. 9 to 11, the corre
member-urging means including spring means, said spring
sponding weight 29 is removed so that the tension in
means acting upon said bracket means.
the corresponding belt is relieved. The spindle may then
8. In a machine as set forth in claim 1, said pulley
be manually braked to a standstill in the usual manner
member-urging means including resilient means, said ma
without adverse effect on the rotary speeds of the other
chine including means for moving said pulley member
spindles. Additionally, the bracket 28 may be equipped
against the force of said resilient means.
with an actuating member such as the knob 22 shown
in FIG. 3 so that the roller 26 may be held in a neutral
9. In a machine as set forth in claim 1, a brake mem
ber mounted on said bracket means for joint movement
position in which it is out of effective engagement with 70 with said pulley member relative to said spindle for
either belt 11.
braking engagement of said brake member with said
All embodiments of the invention thus provide a spindle
spindle when said pulley member moves toward said
drive arrangement in which individual spinning spindles
can be arrested without stopping the machine, and with
out effect on those spindles which continue operating.
whorl portion.
10. In a machine as set forth in claim 1, said wheel
75 means and said rotary member having respective face
3,098,345
9
10
portions formed with interengaging projections and re
References (Jited in the ?le of this patent
UNITED STATES PATENTS
cesses.
11. ‘In the machine according to claim 10, said pro
jections being shaped in the manner of teeth of spiral
bevel gears.
12. In the machine as set forth in claim 1, at least
a single unit including two spindles, a wheel constituting
said wheel means, a rotary member, a double pulley
constituting said pulley member, two belts constituting
said belt means, each of said belts being trained about 10
said double pulley and the whorl portion of one of said
spindles, pulley member-urging means, and a bracket
constituting said bracket means.
2,807,130
3,022,624
Trapido et a1. ________ __ Sept. 24, 1957
Burkhardt ___________ __ Feb. 27, 19162
FOREIGN PATENTS
468,123
1,043,891
607,519
723,353
Germany _____________ __ 'Nov. 6,
Germany ____________ __ Nov. 13,
Great Britain _________ __ Sept. 1,
Great Britain __________ __ Feb. 9,
1928
1958
1948
1955
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 166 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа