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Патент USA US2105920

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Jan. 18, 1938.
v_ |__ JOHANNESSEN
2,105,920 ‘
STRAND HANDLING APPARATUS
‘
Filed Oct. 29, 1936
22
INVL'A/I'Of?
ll. LJOHANNESSEN
ATM/MID’
29105326‘
Patented Jan. 18, 1938
[UNITED STATES
MEN: bFHCE '
, 2,105,920 ;
;
‘STRAND! HANDLING APPARATUS
I. ‘Vaughn LuJohann'essen, OranfordpN. 3.,‘ assign- I
cry to Western Electric Companmlncorporated, ' v
New York, N. Y., a corporation of‘ New York '1
1
; Application ember 29, lssaiserial No. 108,155
I 12 Claims. (01; 1174-21;
*This. invention rlelatesto strand handling ape
par'atus and more --particularly to'an'automatic
apparatus for maintaining tension in strands on a
capstan'of‘a 'strand‘working machine upon stop
page of‘th‘e machine;
"
_
~
'
-
afsuitablegtake-up reel. andfmeans, toidistribute
'
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'
1
"
strand working machines, for ‘instance; strand
twisting ‘machines, in which a plurality ‘of strands
pass around a-rnultiple grooved capstan'to a point
on 'the’machine' where they are intertwisted, con
templates‘van apparatus wherein the strands are
automatically clamped in their individual grooves
by‘a pair of 'diametricallyeopposed rollers oper
ated by a dashpot controlled'spring in response
to a stoppage“ of the‘ machine, thus preventing
20 slackening‘ of ther'strands ‘on the capstan and
maintaining the proper tension on'the strands
between the capstanlandrthe point of intertwist
ing,‘ The rollers are normally spaced from the
strands on the capstan‘when the machine is oper
25 ating by the energization of asolenoid included in
the electrical 'power" circuit fot 'the machine so
that when the power circuit is closed, the solenoid
rapidly withdraws the ela'mping'rollersfrom the
strands, against the action of the ‘spring, (and
ho'lds'them- so-until ‘the power circuit‘ is opened
whereupon'the deenergization of the solenoid per
mits' th'e'spring/ to :move the rollers slowly into
clamping relation'wi'th the strands. - ,
_
' ' Other objects and advantages of this invention
will more fully vappear vfrom the following de+
tailed’description, takenfin connection with'the
accompanying drawing, ‘wherein’
Y
_
' Fig. vLisa- fragmentary elevational and diets
grammatic view,‘ partly in section, of, a strand
handlingapparatus embodying the features'oi the
'invellliigmend
Fig. 2' is afragmentary
.?' ". Yplanviewthereof.
i i
'H i Y ' - I '
5
toa power source. The machinev 58 may include
the worked or twisted strands on the reel and a
110). vention in one embodiment thereof as applied to
45
art and shown‘diagrammatically'at i8 and driven
by ‘a pulley and belt i9 which'may be connected
an'e?icientand'practical apparatus. of the char
"in accordance with-the above object, the in~
4O
arms Hoof a twisting machine'- well known’ in the
- An object of the present inventionis to provide
acter above described.‘
35
'
rotatable guide pulleys [6 carried‘ on revolving
drive therefor (not shown). When the arms l'l'
carrying the guide pulleys it are rotated, about
the vertical‘axis of‘the twisting machine l8 and
the capstan drur'niZ is drawing.‘ the strands“!
from their'suppliesand delivering them to the
1-0
revolving pulleysri?, the strands .?rst passing
through the stationary‘ guide tube vl5, it- will be
evident‘ that the strands will be intertwisted be
tween the "tube' and the pulleys, the twisted
strands being taken up underltension on the reel
(not shown); Methods of driving a take-up reel
through a friction clutch or the ‘like-for applying
a constant tension to thels'trand being wound are
common ‘in the art ‘and it is believed unnecessary
toiillustrate this mechanismi "It also is old’ to
mount a take-up reel in a frame which is rotated
about the axis of agroup' of strands being twisted;
as illustrated in the vpatent to Bouget et1a1.',2,041, 2.5
8_1‘2; May 26, 1936.1 "
' '
"l '
F '-v ' '
" Although 'the'strandsas' they are-withdrawn
from‘the supply vso'ur‘ces'are subjected to some
tension'byv means 'of'a-tension regulating brake
associated with eacl'r'sup'ply'sourcefthere ‘may be 3,9
some slackening of tension‘ between the supply
andthe capstan when the machine" isstopped,
To prevent slackening or-l'ooseninglof the‘strands
H3 in their individual capstan drum grooves I4,
Which-would result in, adisturbance'of the inter
twirstin the strandsbetweenthe guide‘ tube I5
and the pulleys it due to a lessened tension in the
‘strands between the 'cap_stvanp_drum_ IZ’and .the
point of intertwistin'g upon‘ stoppage’ of thetwist
ing‘ machine'particularly since the lessened ten- ‘
sionwould often be nonrrropdrtionatej among‘ the
individualfstrands, the following‘described strand
Reierringto the drawing, oneje'mbodim'ent of handling ‘orterision‘ control] mechanism is pro,
Integral with a base- 26' is a hollow. frame or
to_'the handling of a plurality of parallelfstran'ds
‘the invention has been shown which is applicable
yidedg'
‘_l llbeingjdrawn over a multiple grooved idler guide
‘sheave II' from supply sources (not shown) of_ a
‘strand working or twisting machine by a‘ multiple
“grooved power driven drawing capstan drum‘ l2,
standard Zion’ which is ,l'Qlll'naled a'horizontal
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‘
"
'
shaftj 22; the shaft havingv'?xed thereto Within
the standard a sprocket wheel '23 which-is driven
in the 'direction ‘of the arrow 'fromfa? suitable .50
‘the strands travelling ‘in ‘individual grooves‘ l3 source ofg3'power"(not shown) "by'a chainlzllj. ‘ ‘and M'of the guidesheave and capstanfdruln H Pinnedjtofthe forward end of the shaft 'ZZ'is ‘the
multiple grooved capstan jd'rum '12’ formed with
and [2, respectively, inthe direction of the ar
rows (Fig; l); Thestrands viil'le'aving the capstan a plurality; inthe presentemb'odimen't; four'pe
'ltfdheifqr éaehrstrand w; The
‘11mm 12' Pass. throlllgha Stationary guide-tube‘, l5 'fiphéralsrbores,
idler'iguide sheave- " I l' is \likev’rise'provided ‘with
5 ‘whe‘r'e‘they are bunched a'nd thence‘betweenifreely
2
four grooves I3, one for each strand.
2,105,920
Disposed
diametrically opposite to each other about the
axis of the capstan drum are pivotal arms 25
?xed to shafts 26 journaled on the standard 2I.
Freely journaled on the outer end of each of the
the circuit through the solenoid is also closed.
The capstan, twister and take-up may be driven
by a single motor with interconnecting gearing
or by separate motors. In the latter case, it will
be understood that electric power is applied to
arms 25 is a roller 21 which is aligned with the
and disconnected from
grooved periphery of the capstan drum I2 and
of such dimensions that when moved toward the
neously.
In the operation of the above described strand
capstan drum its peripheral surface will engage
10 each of the strands I 0 on the capstan drum.
The rollers 21 are freely journaled on the arms
2'! so that in case the rollers engage the strands
I0 before the capstan drum I2 has stopped or
they are not withdrawn before the capstan drum
starts to rotate, the rollers will rotate freely with
out deleterious effect on the strands. The roll
ers 21 are faced on their peripheries with a suit
able anti-slipping material, such as rubber, to ef
fect a ?rm grip on the strands II] when engaged
therewith and also to prevent marring the strands
or their covering.
Upon the end of the shaft 22 opposite to the
capstan drum I2 is pivotally carried a lever 28
which is operatively connected to arms 29 ?xed
25 to the shafts 26, which also carry the arms 25,
by links 30, each link at one end being pivotally
connected to the lever 28 the same distance from
its pivotal axis, the opposite ends of the links
being pivotally connected to the outer ends of
30 the arms 25. Thus, it will be apparent that the
rollers 21 will be moved in unison toward and
from the strands I0 on the capstan drum I2
when the lever 28 is rocked counterclockwise and
clockwise, respectively, about the shaft 22, the
35 movements of the lever 28 being transmitted to
the rollers by means of the links 3!] and arms
29 and 25. The outer end of the long arm of
the lever 28, as indicated at 33, is pivotally con
nected to the upper end of a tube 34 projecting
from a dashpot 35 which comprises a cylinder
and a piston 36 therein which is connected to
the lower end of the tube 34. A compression
spring 31 below the piston tends to move the
piston and tube upwardly to rock co1mterclock
45 wise the lever 28 and. through the links 33 and
arms 29 and 25 causing the rollers 27 to be drawn
simultaneously into clamping engagement with
the strands ID on the capstan drum I2.
For controlling the rate of speed at which the
50 rollers 21 move into engagement with the strands
Ill on the capstan drum I2 when the spring 31
is permitted to act, an adjustable oil valve 49
the
motors
simulta
handling apparatus starting with the strand
working or twisting machine I8 in a non-oper
ers 21 are engaged with the strands ID, as shown
in the drawing, the machine is set in motion by
closing the circuit to the driving motor or mo
tors. Simultaneously therewith, the solenoid 43, 15
which is included in the motor circuit, is ener
gized and the core 42 is rapidly drawn down
wardly and the lever 28 connected thereto is
rocked clockwise about the shaft 22 and through
the described connections to the rollers 21, the
latter are quickly withdrawn from clamping en
gagement with the strands Ill on the capstan
drum I2.
To permit a quick displacement of oil from the
lower side of the piston 36 to the upper side
thereof when the core 42 and thereby the pis
ton 36 is drawn rapidly downwardly, a check
valve is provided in the dashpot 35 comprising
a free or ?oating washer 45 surrounding the tube
34 above the piston 36 which ‘is perforated. In
the downward movement of the piston 36, the oil
therebelow is forced through the perforations in
the piston, the washer 45 being lifted from the
piston. During an upward movement of the pis
ton 3B, the washer 45 serves to close the perfora
tions in the piston to the passage of oil from
above the piston, the valve 40 at this time con
trolling the passage of oil.
By means of the pivotal connection 33 between
the lever 28 and the dashpot tube 34, the dashpot
spring 31 is compressed during the rocking of the
lever. During the operation of the machine, the
strands I!) are drawn by the capstan drum I2
from their supply sources (not shown) at the left
of the idler guide sheave II, over the latter and
around the capstan drum and delivered to the
twisting machine l8, each of the strands travel
ling in its respective grooves I3 and I4 of the
idler guide sheave and capstan drum I2, respec
tively. As long as the machine I8 is operating,
the rollers 21 are disengaged from the strands I0
and the dashpot spring 31 will be held compressed.
is included in the dashpot 35 for regulating the
When the machine is stopped by opening the
escape of oil from the upper side of the piston
55 36 to the lower side thereof during the expan
sion of the spring in a manner to be presently
motor circuit, the circuit through the solenoid 43
will likewise be opened and the deenergization
described. By adjusting the valve 40, which is
carried in the tube 34 and screw threadedly con
nected thereto at its upper end, the escape of oil
60 from the upper side of the piston 36 to the lower
side thereof may be regulated and thereby the
rateof speed at which the piston moves upwardly
which, by means of the tube 34, lever 28, links
30, and arms 29 and 25, controls the movement
65 of the rollers 21 into clamping engagement with
the strands I 0.
-Also pivotally connected to the long arm of
the lever 28 at a point between the adjacent
link 36 and the dashpot tube 34, is the upper end
of a link 4|, the lower end thereof being simi
larly connected to a core 420i an electrical sole
noid 43. The solenoid 43 is included in the elec
trical power circuit for the machine which is
driven by an electric motor and when the motor
75 circuit is closed to set the machine in motion,
10
ating condition wherein the strand gripping roll
20
25
30
35
40
v45
50'
thereof releases the energy stored in the com
pressed dashpot spring 31 with the result that the
lever 28 is rocked counterclockwise and the rollers
21 are moved slowly into clamping engagement
with the strands I 0, the speed at which the rollers 60
move being determined by the adjustment of the
dashpot valve 43 in the manner previously de
scribed. Preierably, the rollers 21 should ?rmly
engage and grip the strands I3 in their individual
capstan drum grooves I4 at substantially the 65
moment the capstan drum I2 comes to a halt,
thus maintaining the proper operating tension
in the strands extending around the capstan
drum I2 to their points of being worked or inter
twisted in spite of slackened tension in the 70
strands between the capstan drum and the strand
supply sources.
From the above description of the apparatus for
controlling tension in strands on a capstan of a
strand working or twisting machine upon stop- 75
3
2,105,920
page of the machine, it will be readily seen that
the strands are automatically maintained under
suitable tension in the capstan grooves at all
rollers arranged about the periphery of the cap
stan and movable in unison into and out of
times, even though the tension on the strands
a solenoid for moving said rollers in one direction,
and a dashpot for moving them in the other di
rection.
between the capstan drum and the strand supply
sources is slackened when the machine stops, with
the result that no disturbance of the intertwist in
the strands between the capstan drum and the
point of intertwisting will occur when the
10 machine is stopped.
Although the invention herein described and
illustrated is particularly well adapted for use in
strand twisting machines, it will be understood
that the invention is capable of many other modi
?cations and applications and is to be limited
only by the scope of the appended claims.
What is claimed is:
1. In strand handling apparatus, a take-up
means, a capstan for receiving strand material
20 and delivering it to said take-up means, and
means responsive to a stoppage of the take-up
means and the capstan for maintaining the ten
sion on the length of strand between the capstan
and take-up means.
25
2. In strand handling apparatus, a common
capstan for receiving a plurality of strands, a
common take-up means for taking up strands un
der tension from said capstan, means for simu1~
taneously clamping said strands, and means act
30 ing automatically when the apparatus is stopped
to actuate said clamping means for maintaining
a predetermined tension on the strand portions
entering the take-up means.
3. In a strand twisting apparatus, a take~up
35 means for twisted strands, means for twisting
strands together, a capstan for receiving strands
and delivering them to said twisting means, and
means responsive to the stoppage of said take-up
means and capstan for maintaining the tension
on the lengths of strands between the capstan
and take-up means.
4. In a strand handling apparatus, a capstan
having a plurality of grooves for receiving sepa
rate strands, means for driving said capstan to
advance said strands, and movably mounted nor
mally ineffective means effective when the cap
stan is stopped for clamping the strands in said
grooves.
5. In a strand handling apparatus, a capstan,
means for supplying strand material to said cap
stan, means taking up the material under tension
from the capstan, and means for clamping the
material when the capstan is stopped, said means
comprising a clamping element, a solenoid for
moving said element in one direction, a spring
for moving it in the other direction, and means
for retarding one of said movements.
6. In a strand twisting apparatus, a capstan,
means for supplying a plurality of strands to said
60 capstan, means for intertwisting strands ad
vanced by said capstan from said supply means,
means for driving said capstan and twisting
means, and movably mounted normally ineffec
tive means effective when the capstan and twist
65 ing means are stopped for clamping the strands
to said capstan to prevent slackness of the strands
thereon and thereby preventing disturbance of
the twists in the strands.
'7. In a strand handling apparatus, a capstan
70 having a plurality of grooves for receiving sepa
rate strands, means for driving said capstan to
advance said strands, and means for clamping the
strands in said grooves when the capstan is
stopped, said means comprising interconnected
clamping engagement with the strands thereon,
8. In a strand handling apparatus including
means for working a strand and a capstan for
moving the strand to said working means, means
for rotating the capstan and driving said working 1O
means including electric motive means and an
operating circuit for said motive means, and
means including a movably mounted element re
sponsive to the opening of said circuit when stop
ping said capstan and working means to cause
said element to clamp the strand to the capstan
for maintaining the tension on the length of
strand between the capstan and working means.
9. In a strand handling apparatus including
means for working a strand and a capstan for
moving the strand to said working means, means
for rotating the capstan and driving said working
means including electric motive means and an
operating circuit for said motive means, means
mounted for movement relative to said capstan
for clamping the strand thereto, and means for
moving said latter means into clamping engage
ment with the strand on said capstan in response
to the opening of said circuit when stopping said ,'
capstan and working means for maintaining the
tension on the length of strand between the cap
stan and working means.
'
10. In a strand handling apparatus including
means for working a strand and a capstan for
moving the strand to said working means, means
for rotating the capstan and driving said work
ing means including electric motive means and an
operating circuit for said motive means, and
means responsive to the opening and closing of
said circuit when stopping and starting said 40
capstan and working means to clamp the strand
to said capstan for maintaining the tension on
the length of strand between the capstan and
working means upon stoppage thereof and for
unclamping the strand when the capstan and 45
working means are started when the circuit is
closed.
11. In a strand handling apparatus, including
means for working a strand and a capstan for
moving the strand to said working means, means 50
for rotating the capstan and drivingsaid work
ing means including electric motive means and
an operating circuit for said motive means, means
movable to and from the strand on said capstan
for clamping and unclamping the strand to the 55
capstan, and means including an electric solenoid
in said circuit responsive to the closing and open
ing of the circuit when starting and stopping
said capstan and working means to move the
clamping means from the strand upon starting 60
the capstan and working means and moving the
clamping means to clamp the strand to the cap
stan when the capstan and working means are
stopped for maintaining the tension on the length
of strand between the capstan and working 65
means.
12. A device for clamping strand material
against a capstan, comprising a movable support,
a roller freely journaled on said support on an
axis parallel to the axis of the capstan, and 70
means for moving the support to bring the roller
into engagement with the strand material.
VAUGHN L. JOHANNESSEN.
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