close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2137565

код для вставки
Nov. 22, 1938.
F. CASABLANCAS
_
2,137,565
FALSE TWIST MECHANISM FOR DRAWING TEXTILE ROVINGS
Filed Sept. 23, 1936
2 Sheets-Sheet 1
o
om
m.
M1
V
ob
o0100H5240o]inc
G\\
, 4.Q\
o0
o
O
o
0
Q
.O
0l
i3lg8.-hz
\,V1
oi7r ..,
J9
ml0OJto
o
neys.
NOV. 22, 1938.
-
F_ cAéAgLANcAs
2,137,565
FALSE TWIST MECHANISM FOR DRAWING TEXTILE ROVINGS
Filed Sept. 25, 1936
ZSheets-Sheet 2
FIELE
QQLQXQLQELGIQLQX'DLWXQ
’
7
Ii
-
I
A.
v
..
IzwénZZr
Fernando Qua/5km“
?F
m)
m24/
?iforneys.
Patented Nov. 22, 1938
2,137,555
UNITED STATES. PATENT OFFICE
2,137,565,
FALSE TWIST‘ MECHANISM FOR DRAWING}
TEXTILE RQVINGS?
.
Fernando Casablancas,. Sabadell, Spain
Application'September 23, 1936;.SerialNo. 102,235
In Spain October '7; 1935;
8 Claims.
This invention relates to the false twist mech
anisms used in the spinning of textile ?bres and
especially to the case where the roving or sliver
of ?bres is subjected to-two or more successive‘
5 drawing operations with'intermediate false twist.
The machines used for this purpose comprise for
each‘ roving two successive drawing arrangements
or mechanisms, between‘which a false twist tube
is interposed, All the false twist tubes corre
10 spending to the different rovings are mounted on
av bar or frame which extends over the entire
length of ' the machine and receives a recipro~
(CI. 19-154)
so that, when ?tted in the toothed. wheel, it is
rotated-thereby.
The toothed wheels 3fare:all driven‘ by an end
less chain 5,? which is» actuated by. means of a
wheel 6 of larger diameter, which is disposed at 5
one‘ end of- the frame I and is secured. to theyshaft
7' which extends to the-exterior- of: the frame and
is rotated‘ by» any’ suitable mechanism.
At the other end of the frame I there is mount‘
ed-a-nother wheel 8 similar-to the wheel 6 for guid- 10
ing the chain 51. ‘This wheel 8, however, is free to
rotate loosely on the bearings 9, the position of
catin‘g‘m'ovement in order to follow the transverse which bearings may be regulated by means of
reciprocating movement of the‘ rovings.
a screw 10 to compensate for variations in the
15
In these machines, the false twist tubes are length‘ of the- chain.
'
15
generally actuated by means of gears, an arrange
The whole mechanism is covered by a cover ll
ment which has given good results in practice suitably secured to the- frame I‘, the form of the
being that in which each of ‘the twist tubes is con - cover being such‘ as to retain the toothed wheels
nected?with a helical wheel, a shaft extending 3 and‘the‘chain 5'-in position;
20 throughout the entire length of the machine and
carrying a series of'h‘elical pinions which actuate
the wheels of the different twist‘ tubes being ar
ranged at the lower‘part of the bar or frame;
It is, however, often desired to reciprocate the‘
25 frame longitudinally in order to follow the trans‘
verse reciprocating movement of the rovings and‘
it is onev of ‘the principal objects of the invention
to provide an improved. means of rotating the
twist tubes while permitting this movement of?
30 the frame.
The necessary part of a false twist mechanism
provided with the improvements according to‘
the‘ present invention is illustrated by way of
example in the accompanying drawings, in which: "
35
Figure 1 shows in longitudinal section the whole
of‘ the bar or frame carrying the twist tubes‘
with the chain mechanism for actuating them.
Figure 2 is a detail on a larger scale of a part
of Figure 1 in longitudinal section on the line
40 II-—-II of Figure 3.
Figure 3- is a cross-section on the line III-III
of‘ Figure 2, and
Figure 4 is a‘ longitudinal section of a modi?ca
45
tion.
As will'be seen from the‘drawings, the mech
anism is constituted by a frame I, which may be
in the form of a casting, or constructed of sheet
metal or any other suitable'material, the,bearings- 2-1 being ?tted therein at suitable intervals,
50 while the sprocket‘ whee1s~3' turn loosely in the
said‘bearings. Each of these toothed wheels 3re
ceives, as shown in broken lines in Figure 3,
a- false twist tube 4 of‘any suitable type and dis
posed so that. it may be readily introduced‘ into
C1 CA the toothedlwheel and withdrawnztherefrom-and‘
The frame I maybe given the reciprocating 20 _
movement which enables it to‘ follow the trans
verse to and‘ fro movement of ‘the rovings in any
known manner. It is necessary that the wheel 6
should be so actuated that its movement is not
interrupted in spite'of" the reciprocating move~ 25
ment of the frame. This may be achieved by
various mechanisms, and in Figure'l there is
illustrated by way. of example a toothed wheel l2
mountedon. the shaft l‘of the wheel; 6, which
toothed wheel engages with‘ a worm l2a actu- 30
ated by a suitable gear l3‘. The worm [2a is
sufficiently long to enable the toothed wheel l2'
to be displaced longitudinally on thevworm I20;
without becoming disengaged therefrom. This
displacement produces a number of small varia- 35
tionsin‘ the speed of rotation of the wheel 12. and
consequently of the wheels 3' and of the twist
tubes, but as these variations are very small and,
moreover, it is~a question of false twist, they are
of ‘no importance in practice.
40
In Figure 4 is illustrated a- modi?cation of the
arrangement of‘ this mechanism, the object of
which is further to facilitate the reciprocating
movement of’ the frame I with the-toothed wheels
3 and the twist tubes. In this case, the frame I 45
carries only'the'toothed' wheels 3 and the twist
tubes, while theactuation of thechain 5 is ef
fected by a wheel l6 arranged separate from the
frame! and adjacent one extremity thereof, the
said wheel being rotated by any suitable means. 50
At the other extremity‘offand also separate from
the frame‘ I3 a suitable mechanism for. imparting
the necessary tension: to the chain 5 is arranged.
This mechanism is’ illustrated in- the drawings as
being constituted by two‘. guide wheels l4‘ and a 5‘5
2
2,137,565
wheel [5, from which wheel [5 a weight is sus—
pended. With this arrangement, the reciprocat
ing movement affects only the frame I with the
wheels 3, while the whole of the chain and also
the wheels which actuate it and impart the ten
sion thereto do not take part in this to and fro
:lovement.
'
In this arrangement according to Figure 4 a
series of guide rollers I‘! mounted in the frame
I and serving as a support for the lower side of
the chain 5 are provided, with the object of
reducing the friction of the chain with the frame
tudinally with respect to said guide sprockets and
with respect to said sprocket chain, said sprocket
chain moving through the frame in one continu
ous direction quite independently of the move
ment of the frame and means for rotating one of
the guide sprockets.
4. In a false twist mechanism for use in draw
ing textile rovings the combination of a frame, a
plurality of sprockets rotatably mounted on the
frame along the length thereof, a twist device 10
through which a roving may be passed to receive
a false twist mounted for rotation with each of
I. The arrangement of the guide rollers‘could the saidv sprockets, a pair of guide sprockets
also be applied to the form of construction shown mounted exteriorly of the frame beyond the ends
thereof, a sprocket chain passing round the said
in Figure l.
The mechanism forming the subject of this in; guide sprockets, means for retaining the said
vention is of extremely simple construction,~great
ly reduces the possibility of failure in operation
and reduces the cost price in comparison with
mechanisms in which the twist tubes are actu'-'
ated by gears.
What I claim and desire to secure by Letters
Patent of the United States is:
1. In a false twist mechanism for use in draw
ing textile rovings the combination of a frame, a
plurality of sprockets rotatably mounted on the
chain in tangential engagement with the sprock
ets on the frame, said frame being adapted to
be reciprocated between and independently of
said guide sprockets, said chain moving through
the frame independently of the movement of the
frame and in one continuous direction and in
mesh with all of the twist device sprockets at
the same tangential side thereof whereby toro
tate all of said twist device sprockets in one
same direction all the time, a movably mounted
frame along the length thereof, a twist device
tensioning sprocket engaging with thechain
through which a roving may be passed to re
ceive a false twist mounted for rotation with
for rotating one of the said guide sprockets.
30 each of the said sprockets, a pair of guide
sprockets mounted on the said frame one at
each end thereof, a sprocket chain passing round
the said guide sprockets andv engaging tan
gentially with the sprockets carrying the twist
devices intermediate said guide sprockets, means
for retaining the chain in engagement with the
sprockets carrying the said twist devices, means
for reciprocating the frame longitudinally, means
for giving to one of the said guide sprockets a
continuous rotation in one direction and means
for moving one of the said guide sprockets longi
tudinally of the frame to adjust the tension of
the said chain.
2. In a false twist ‘mechanism for use in draw
ing textile rovings the combination of a frame,
a plurality of sprockets rotatably mounted on
the frame along the length thereof, a twist device
through which a roving may be passed to re
ceive a false twist mounted for rotation with
each of the said sprockets, a pair of guide
sprockets mounted on the said frame one at
each end thereof, a sprocket chain passing round
the said guide sprockets, means for retaining the
chain in tangential engagement with the sprock
ets carrying the twist devices intermediate the
said guide sprockets, a toothed wheel secured to
the shaft of one of the guide sprockets, a worm
wheel engaging the said toothed wheel and
mounted independently of the said frame with
60 its axis parallel to the direction of movement of
the frame, means for reciprocating the frame
longitudinally and means for rotating the worm
wheel to cause rotation of the said twist devices.
3. In a false twist mechanism for use in draw
65 ing textile rovings the combination of a frame, a
plurality of ‘sprockets rotatably mounted on the
frame along the length thereof, a twist device
through which a roving may be passed to receive
a false twist mounted for rotation with each of
70 the said sprockets, a pair of guide sprockets
mounted exteriorly of the frame beyond the ends
thereof, a sprocket chain passing round the said
guide sprockets, means for retaining the said
and biased to apply tension thereto and means
5. In a false twist mechanism for drawing tex
tile rovings the combination of a frame adapted
to be reciprocated longitudinally, a plurality of
rotatably mounted sprockets at least some of
which are mounted on the frame along the
length thereof, a twist device through which a 35
roving may be passed to receive a false twist
mounted for rotation with each of at least some
of. the sprockets on said frame, a sprocket chain
passing round at least two of the sprockets and
engaging tangentially at the same side with those
sprockets on the frame which carry the twist
devices, guide means adjacent each point of
tangential engagement of the said chain with a
sprocket and arranged positively to retain the
chain in said engagement and means for actuat
ing the chain to give to all the twist devices a
continuous rotation in one direction all the time.
6. In a false twist mechanism for drawing tex
tile rovings the combination of a frame adapted
to be reciprocated longitudinally, a plurality of
sprockets rotatably mounted on the frame along
the length thereof, a twist device through which
a roving may be passed to receive a false twist
mounted for rotation with each of at least some
of the said sprockets, a sprocket chain extend
ing along the frame and engaging with said
sprockets, the engagement of said chain with at
least one of said sprockets being tangential and
the ‘chain passing to the same side of all the
sprockets, a cover plate extending along and de 60
tachably secured to said frame, said cover plate
being arranged positively to retain the chain in
said tangential engagements, and means for
actuating the chain to give to the sprockets a
continuous rotation in one same direction all the
time.
7. In a false twist mechanism for use in draw
ing textile rovings, the combination of a longi
tudinally reciprocal frame, a plurality of sprock
ets rotatably mounted on the frame along the 70
length thereof, a twist device through which a
roving may be passed to receive a false twist
chain in tangential engagement with the sprock
mounted for rotation with each of said sprockets,
a sprocket chain extending along the frame and
75 ets on the frame, said frame beingslidable longi
engaging in the same directional sense with said
3
2,137,565
‘sprockets, the engagement of said chain with at
least one of said sprockets being tangential, guide
means adjacent each point of tangential en
gagement of the said chain with said sprocket
and arranged positively to retain the chain in
said engagement, and means for actuating the
chain to give to all the sprockets and the twist
10
a false twist mounted for rotation with each of
the said sprockets, a pair of guide sprockets
mounted on the said frame one at each end
thereof, a sprocket chain passing around the said
guide sprockets and engaging tangentially and
in the same directional sense with all the
sprockets which carry the twist devices, guide
devices a continuous rotation in one same direc
means for retaining the chain positively and in
tion all the time.
the same directional sense in engagement with
_
8. In a false twist mechanism for use in draw
ing textile rovings, the combination of a frame
adapted to be reciprocated longitudinally, a plu
rality of sprockets rotatably mounted on the
frame along the length thereof, a twist device
15 through which a roving may be passed to receive
the sprockets carrying the said twist devices, 10
and means for giving to one of the said guide
sprockets a continuous rotation in one direc
tion whereby all of the twisting devices are ro
tated in one same direction all the time.
FERNANDO CASABLANCAS.
15
Документ
Категория
Без категории
Просмотров
0
Размер файла
464 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа