close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2109247

код для вставки
Feb. 22, 1938.
J. R, CLAY
2,109,247
VARIABLE SPEED DRIVE FOR DRAWING MACHINERY
Filed June 18, 1937.
5 Sheets-Sheet l
mfg“
'_1 e
409 _se
NO
Ñ.
Èm
|
l
1.
l
I
_Zi-,57:1
gjm/55E. CLAY
GMM
Feb. 22, 1938.
J, R_ CLAY
2,109,247
VARIABLE SPEED DRIVE FOR DRAFTING MACHINERY
Filed June 18, 1937
I
W
i9
l?
H
3 Sheets-Sheet 2
@@’9
/7
J/3 ? '
'
/
6.9
6 77?
68
7,65 6
'
1_ -L? 30%,
-
'_
:_
â :
/ '
_
â"
__
75
7.9
n
e@
_ ____
¿d
_
«3.2 635
?
?
¿7
'7,43
.
l0
/nvaNTo/ê.'
Fvg-'Z
JAMES R. CLA?
EY @MME
www
Feb. 22, 1938.
„jl R, CLAY
2,109,247
VARIABLE SPEED DRIVE FOR DRAFTING MACHINERY
Filed June 18, 1937
3 Sheets-Sheet 5
.
i
...... _.
lllllh
um
`
“nl
.b
" W/.iim
l@ 58
.
é 6677 V/
Eg. 6
g
\\\`
'
M
ÖY
MÃ
Gum/Mw
2,109,247
Patented Feb. 2_2,
PATENT " OFI-'lolz>
l .UNITED STATES
2,109,247
VARIABLE SPEED DRIVE vFOR. DBAFTING
l
MACHINE
RY
James n. clay, Granite nur, N. c., miglior of
one-hal! to Perry L. Moore, Granite Falls, N. C.
Application June 18, 4les?, ser-m No. 148,982
1 Claim. (ci. `11s-a2)
This invention relates to a variable speed drive
for drafting machinery such as spinning frames,
cotton twister frames, roving frames, and the
like, and more especially to a drive whichv is ca
5 pable of gradually increasing or decreasing the
speed-of the machine as the strands are built up
' on the bobbins.
It is a well known fact that when yarnv is being
wound around bobbins on spinning frames, the
10
ring rail reciprocates about one-fourth the length
ofl the bobbin at the beginiing, and as the yarn
is being built on the bobbin to form the appear
ance of an inverted cone at the lower end there
of, the ring rail gradually'rises relative to the
bobbin until the dofilng point "is__reached. In
other words, the last reciprocationï' of the ring
rail traverses the upper' fourth of the bobbin. At
this point the length of the strand of yarn which
is disposed between the traveler and the eyelet
on the guide rail is considerably shorter than
20
when the bobbin is ñrst started.
The length of the strand between this eyelet
and the traveler on the ring rail is subject to
`a great deal of wind resistance as it is being
25 wound around the bobbin. The greater the
length of this portion ofthe yarn, the-greater
will _be the balloonage and «windage It is there
fore, necessary that the speed of the spinning
frame be much `slower at the beginning of the
30 bobbin than when the-doiiing point is reached be
cause there is greater resistance at the beginning
than there is as the package is being completed.
. There are other factors which necessitate a
. slow beginning and a gradually increasing speed
on a spinning frame. For example, the size of
the quill or `bobbin on which the yarn is wound
must necessarily be small in order to get the
maximum amount of yarn thereon. Due to this
_small size of the quill the angularity of the yarn
4 between the bobbin and the traveler is greater
than when .the yarn has been built on the quill
»up to a larger diameter. This angularity creates
an additional friction consequently, if the pack
ages of yarn are started at a maximum speed
45 many of the ends will be broken> down resulting
in ineiilcient operation of the machine.
'
It is therefore, an object of this invention to
provide a variable speed drive for spinning
frames, comprising means for gradually increas
50 ing‘the speed of the machine as the yarn is be
-mg wound on uíebobbins until the bobbins are
ready to be doifed, at which time the maximum
speed is attained.v AMeans have also been pro
vided whereby the' speed can be manually ad
to re-set the speed at any time due to atmos
pheric conditions within the mill or for other
reasons.
Wh'en the variable speed drive is used upon a-v
twister frame it is necessary that the machine
start with a maximum speed and gradually de
crease in speed until the minimum is reached at
the domng point. This result is obtained in one
form of this invention by merely setting the vari
able speed drive at maximum speed and then
reversing the ratcheting mechanism.` When this
is done, the‘speed of the machine will gradually
decrease as the package increases -in size, in
stead of increasing the speed, as in the case of
spinning frames.
v
Some of the objects of the invention having y
been stated, other objects will appear as the
description proceeds, when taken in connection
with the accompanying drawings, in which:
Figure lis an elevation of one end of a spin
ning frame-with portions thereof shown in sec
tion, showing my invention applied thereto;
Figure 2 is a top plan view taken alongv line
2--2 in Figure l;
,
' Figure 3 is a sectionaLplan view taken along 25
line 3-3 in Figure 1;
`
' '
Figure 4 is a vertical, sectional view taken
along line 44---4 in Figure l;
Figure 5 is an enlarged, sectional, detail eleva
tion taken along line 5-5 in Figurev l;
_
Figure 6 is a vertical, sectional, detail view
taken along 4line 6_8 in Figures 2 and 3, the belt
being omitted;
'
'
.
Figure 'I is a sectional, detail view taken along
line 1--1 in Figure 1;
Figure 8 is an elevation of a slightly modiñed '
form similar to the lower portion of Figure 5,
but showing the ratcheting mechanism reversed
so as to be adaptable for use on twister frames;
Figure 9 is a sectional, plan view taken along 40
line '9--9 in Figure 8.
_»
Referring more specifically to the drawings,
the numeral I0 denotes the'end support of a
suitable spinning frame which has connected
thereto suitable bottom rails II', bolster rails I2,
spinnings rails vi3 and thread guide rails I4. Each
bolster rail I2 has secured therein suitable bol
sters I5 in which rotate spindles I6 and each of
said spindles has a bobbin I1 removably mount
ed thereon. A strand of yarn Il ls drawn down
wardly from the drafting rolls, not shown,
through an eyelet Ila and then to the traveler `ISI.
from whence it is deposited upon the bobbin I1.
, Since the speed of the bobbin must be rela
55 Justed to any desired point should it be desired - tively slow when the yarn is first started because 55
9,109,247
of the windage and the angularity, itis necessary
to provide meansfor gradually increasing the
speed of the spinning frame as the yarn upon
thebobbinbuildsupandastheringrail il
movesupwar'diyrelativetothebobbin. Thisva
riable speed mechanism is controlled by vertically
turned when the conditions -require such move- A
- ment to be made.
'
.
'I‘he intermediate portion of shaft Il penetrates
a lug lla vwhich extends ~outwardly from verti
cally disposed lever ll. Suitable collars Il and
I1 are iixedly secured on shaft Il and on- opposed
disposedpiungerrodllwhichhasitsupperend
sides of'thls lug.'> 'I‘he lever Il is pivoted as at Il ' ’
secured in ring rail il and its intermediate por
to pin Il which pin is slidably mounted in a
bearing I2 in end frame Il. ’I'he intermediate
tions slidably mounted-‘in bottom rail Ii and
10 bolsterrail i2. Thelowerendofrod 2| ispivotà
ally secured to lever 2i which, in turn. is, iixedly‘I
portion of the pin Il is encircled by a compres
sion spring Il, one end of said spring pressing
against the end frame I_I' and the other end press
secured aroundring rail cross shaft 22. 'I'his
cross shaft is mounted for oscillation in suitable ' ing against a nut M which is threadably secured
brackets such as 22 which, in turn, are secured on the intermediate portion 'of' the pin Il. 'I‘his
to the' bottom rails ii. Y Also, iixedly secured spring will normally tend to force the pin Il and
around the cross shaft 22 is a vertically disposed
lever 24 which has pivoted to its upper free end
a horizontally disposed link, 2l. y’I'he right-hand
end of link 2l is adlustably secured to the end of
20 ratchet lever 2i. by means of a bolt 21 which
penetrates a slot 28a in the ratchet lever 20 and
the end of the link 2l.
'Die lever 2l is loosely mounted for oscillation
around the lower end of vertically disposed shaft
2l and is disposed adjacent to the ratchet wheel
Il which wheel is fixedly secured on the lower
lever Il to the right in Figures 1 ando to cause
the proper tension to be exerted upon the beit.
which will be later described.y
. -
If it is desired to increase or decrease the ten
sion upon the belt it is only necessary to manipu
late the nut M and thereby place the proper com
pression-upon the spring I2.
¥
'I'he lower end of lever Bl has a forked portion
Il which rests astride a hub Il. Suitable rollers
I1l are disposed on opposed sides of the hub if
and are engaged by the lower prongs of forked
end of this shaft. l A pawl 32 is pivotaliy'secured member ‘L Since the hub Il is rotataby mounted
as at I2 to a proiection 2lb of ratchet 2l, and has around a hub Il of a movable conical disk t2 it
_ its free end normally engaging the teeth in_ is necessary to prevent any longitudinalv rela- 30 ratchet wheel 2l. In order to hold -the free end tive movement between these two members in 30
of dog 22 in engagement with the ratchet wheel order that the movement of the lower end of lever
2l -a torsion spring 24 is employed which has' one ll will move a disk II longitudinally of a cylinder
end thereof engaging vthis dog and its other end shaft 10. Therefore, a suitable collar 1l has
engaging the arm 2Gb. It is- observed by referring
35 to Figures l, 3 4and 5, that as the ring rail i3
reciprocates up and down. a reciprocatory motion
will be imparted to the link 25 to cause the lever
2l to rotate the rod 29 through the pawi 22 and
the-ratchet wheel 2l. In other words, the rod 29
40 will be rotated in a counter-clockwise manner in
Figure 3 due- to the reciprocatory -movement of
been placed around the hub 02 and adjacent the
left-hand end of hub Il, and a thrust bearing 12
has been disposed between the right-hand portion
of hub ß and the disk il As the disk il is '
slidably secured on the cylinder shaft 10 by means
of key ways .14, any rotation imparted to _the
disk il will likewise impart rotation to the shaft 40
1li. A movable conical disk Il is adapted to co
the ring rail i2.
- - Í
operate with a fixed disk `1l which is secured on
'I‘he rod 2l is rotatably mounted-.in bearings 40 shaft 10 by any suitable means such as a set
and Il which in turn, are secured to the end - screw 1I. These two disks l0 and 1l form a
_
45 frame il. 0n the upper end of the rod 2l a worm split V-pulley.
45
42 is nxedly secured which engages worm gear
It will be noted by referring to Figures l, 3
I3, said pinion vbeing threadably secured upon and 6 that the intermediate portionof shaft 10
threaded portion u of a shaft 45.
is rotatably mounted in a bearing 11 of endBy referring to Figures l, 5 and '1, it will be frame l0, whereas, the right-hand end of this
shaft is rotatably mounted in a suitable thrust
50 noted that the bearing Il' has an upwardly ex
tending portion Cia which encircles the threaded bearing 1l which is mounted on the top of U
portion M and has the left-hand _face thereof shaped support l1. .This thrust bearing is pro- .
normally. engaging the right-hand hub of the ` vided in order to take care of any longitudinal
worm gear 42. This portion normally holds the thrust which may be produced due to the pres
sure of spring 8l upon the belt 1I which is 56
55 worm gear l2 in a fixed position so that it will not
be allowed to move longitudinally ofthe shaft 45 mounted between the disks ‘I and 15.
.
but may have rotative movement only on the
The -upper end of lever I5 has another forked
threaded portion M. . The shaft 45 has adjustably portion lli which is similar to forked portion Il
secured thereon »collar 5I by means ofset screw on the lower end thereof. The ends of» this forked
52. This collar may be positioned so as to act as portion normally engage suitable rollers 2i which
a stop when the operator winds the wheel 49 back are secured on opposed sides of a hub member 82.
to the starting point. At this time, the collar will This hub member is rotatably mounted upon a
engage the bearing Il. Since the threaded por
hub I3 of movable conical disk l8l which is slid
tion is slidably mounted in bearing “a of the ably keyed on a shaft 0l by means of key ways ß.
65 end frame i0, the rotative movement of the gear Relative longitudinalmovement between the hub 65
l! will move the shaft 4B and its associated parts 83 ofvdisk Il, and the hub I2 is prevented by
about its longitudinal axis, one way or the other, means of collar l1 which is secured around thef
dependent upon the- direction of rotation of the left-hand end of hub Il. A thrust bearing I8 is
shaft 2l. 'I'he shaft II has its right-hand end disposed between the right-hand end of the hub
70 rotatably mounted in an upwardly extending I2 and the disk 84. 'I'he disk lM cooperates with 70
bracket Il which is’secured to a U-shaped sup
a nxed conical disk I9 which is secured on the
port 41, said support 41 being fastenedto the shaft Il by any suitable means such as set
end frame lli by means of bolts Il. A hand wheel screw 90. 'I'he disks M and 89 'also form a split
ll is secured on the extreme right hand end of V-pulley./ 'l‘he belt 1l is also mounted between
shaft Il so that the shaft 4l may be manually the disks I4 and l0 and it is evident that upon
3
2,109,247
rotation of the shaft 45 due to the reciprocatory
motion of the ring rail I3, the lever 55 will be
rotated slightly in a clockwise manner which will
cause the disk 69 to move away from` disk 15 and
at the same time cause the disk 84 to move to
wards disk 89, resulting in belt 19 traveling upon
of the invention where the same apparatus is
being used upon twister frames instead of spin
ning frames. As‘heretofore stated, the twister
frames start off at a maximum speed and grad
ually decrease to a minimum when the packages
of yarn are doñîed. In order to produce this
effect it is only necessary to turn the ratcheting
mechanism upside down to a reversed position
from that shown in Figures l, 3 and 5. In this
position, the ratcheting mechanism comprising 10
lever 26, ratchet 39 and pawl 32 will assume the
is the driven shaft.
»g -`
The shaft 85 has its ends rotatably mounted in position shown in Figures 8 and 9, and due to its
thrust bearings 95 and 96 which are secured to reversal, the shaft 29 will be rotated in a clock
`wise direction instead of arcounter-clockwise di
the end frame I0 and an arcuate support _91 re
a greater circumference on the lower disks. Of
course, this will mean that the lower shaft 19
will be rotated at an increasing rate of speed since
10 the shaft 85 is the drive shaft and the shaft 1.9
15 spectively, said arcuate support being secured to
the end frame I0 by any suitable means such as
rection as was the case when the same mechanism 15
was used in conjunction withA a spinning frame.
pulley IUI. During the normal operationß‘of the
Of course, this reverse rotation of the shaft 29
will produce a reverse rotation of the shaft 45
and the lever 55. Therefore, the disks 69 and 15
will be gradually closed while the disks 84 and 89 20
will be gradually opened resulting in a gradual
machine a suitable source of power is> connected
dimunition of the speed of shaft 10.
bolts 98. The shaft 85 also has flxedly Sècured
i thereon a drive pulley 99 by any suitable means
such as a set screw |08. Adjacent the pulley 99
20 and rotatably mounted on the shaft 85 is a‘loose
to the drive pulley 99 which in turn, will rotate
the shaft 95 and the shaft 10 through the belt 19.
25 The rotation of the shaft 1I) will likewise rotate a
cylinder |05, which is ñxedly secured on the'. shaft, A
and this cylinder will rotate the spindle I5 through
bands |06. The bands are mounted around the
cylinder |85 and whorls 11, these whorls?v being
30 fixedly secured on the spindles I8.
i .i
As the bobbins are rotated, the builder motion
causes the ring rail I3 to reciprocate over a ~-por-v
tion of the bobbin and at the same time-'grad
ually move the rail towards the top while main
'I'his reciprocation will
35 taining the same stroke.
rotate the shaft 29 in a counter-clockwise inan
ner in Figure 3, through the ratchet lever 26 and
the ratchet 30, and the rotation will cause’ the
shaft 45 to be moved to the left in Figure 1, there
by rotating the lever 55 in a clockwise manner to
gradually change the position‘of the belt between
the disks 89, 15, and the disks 88 and 89, resulting
_
In the drawings and specification there has been
set forth a preferred embodiment of the inven
tion, and although specific terms are employed, 25
they are used in a generic and descriptive sense
only, and not for purposes of limitation, the scope
of the invention being set forthin the appended
claim.
~
'
,
.
30
I claim:
In a spinning frame, twisting frame and the
like having a yreciprocating ring rail, a drive shaft,
a driven shaft for driving the frame, a conical
disk fixed on the drive shaft, a second conical
disk flxed on the driven shaft, a sliding conical
disk keyed for sliding movement on each of said
shafts and each having its conical face disposed
reversely to the conical face of the hired conical
disks to thereby provide a grooved pulley on each
of the shafts, a lever having its ends connected 40
to said sliding disks, a bolt slidably penetrating
a. portion ofY the frame, resilient means normally
forcing said bolt away from said frame, means
in a gradual increase in the speed of the shaft 10.
When the bobbin is completed and ready to be pivotally connecting an intermediate point of
doffed, the maximum speed has been attained said lever with said belt, a member penetrating
consequently, it will then be necessary to move 4one end of said lever and having a worm gear
the variable speed mechanism back to a slow threadedly secured on one end thereof, a shaft
speed position by means of the hand wheel 49. having a Worm thereon meshing with said worm
When in this position, the disks 69 and 15 will gear, a. ratchet wheel on the other end of said
be close together whereas, the disks 84 and 89 shaft having the worm thereon, a rod reclprocable 50
by the reciprocating ring rail and having a pawl
will be spread apart. This movement may beef
for engaging said ratchet wheel and whereby said
fected while the spinning frame is still in opera
tion, if the atmospheric conditions in the mill or lever is moved and said sliding disks are moved in
other` factors demand that the speedbe changed opposed directions to vary the relative speeds be
55
tween the drive shaft and the driven shaft.
55 during the winding of the bobbins.
JAMES R; CLAY.
Figures 8 and 9 show a slightly modiñed form
Документ
Категория
Без категории
Просмотров
0
Размер файла
597 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа