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Патент USA US2123235

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July 12, 1938.
Filed June}, 1936
H6. 3.
‘ Patented July-12,1938’
I ,
‘ '
APPARATUS won me mmrmcruan on‘
new Dreyfus, London, England
Application June a, 1936, Serial No.‘ 83,272
In Great Britain June 12, 1935
1 Claims. (01. 117-2)
This invention relates to apparatus ‘for the
manufacture or treatment or ?laments, threads,
thread members is in a wet condition. Part or
all of the connecting member and/or the thread
yarns and the like, and particularly‘ crepe and ., member advantageously have walls of a metal,
other threads containing ?laments of cellulose such for example 88 0099B!‘ 01' brass; which 18 0f
5 acetate.
good conductivity.
U. ,8. Patents Nos. 2,088,587 and 2,088,628 describe a new process for the production of crlilieL
threads of cellulose acetate ?laments by which
there may be obtained crepe effects of excelIn lence hitherto unattained by such materials. The
process comprises subjecting the threads to the
For example the vconnecting 5@
member may compute a Ions tube of narrow bore
0!‘ the connecting member and/0r the thread
member may be provided‘ with cooling ?ns or_
ribs, or both these features may be employed.
I have found that the best results are ob- 10
tained by providing a pressure drop between each '
action of steam, under conditions such that
thread member and the common steam chamber <
moisture is present, during the application of
the crepe twist, as by applying steam, under the
and by maintaining a su?lcient pressure in the
steam chamber or by employing a steam cham
her of su?iciently large-:diameter to permit the 15
. 15 said conditions, to the travelling thread over at
least a portion of that part oi‘ its track in which
passage of steam largely in excess or the ' re
twisting actually takes place. The process enables
quirernents of the thread members connected to
cellulose'acetate crepe threads to be produced
the steam chamber.
which have an average strength very much
20 greater than that of cellulose acetate crepe
threads produced by a simple twisting operation
witholit steaming during twisting, characteristic
oi thé new process. Further, apart from the
great advantage that the resulting in
‘25 fabric made therefrom is strot:
- same dimensions in each connection.
operation itself is greatly facilitatedv in that
twisting may be “ accomplished satisiactorily
vunder conditions of twist and spindle s
in the absence of the steaming step, would give
to 'rise to frequent thread breakage.
The subjection of the thread to the action oi
I the steam may be carried out in operations in
which the crepe twist is applied in more than
one'stage, the steam being applied at least in the
35 stage in which there is applied the ?nal amount
of twist necessary to impart the crepe property
to the thread.
The pressure‘drop may be brought about by
any convenient means. Thus, for example, tubes 20
of the same dimensions and of small cross-sec
time may be inserted in each connection, or a con
strictlon may be made in each connection, the
passage left through the constriction having the
Advan- 25
eously. however, the pressure drop is capable
of adjustment by the operator. One method of
securing a pressure drop capable oi adjustment
is to insert ‘in ‘each connection a similar dia- .
constituted by a plate of standard thick- 30
ness pierced by holes of varioussizes. A change
in the pre drop is obtained by movement of
the diap w u by the operator so that the steam -
is passed through a larger or smaller hole in the
A further method oi’ ob :w 1 it a 35
pressure drop which can be adjusted by the
operator is to insert a needle valve in each con
1 have found that apparatus which may be employed' for steaming travelling ?laments, threads,
40 yarns and the'like advantageously consists oil‘ a
steam chamber, a hollow member, hereinafter
referred to as the thread member, through which
the thread to be steamed may be passed and
having an inlet and outlet for the thread, and
nection. ‘When a perforated diaphragm, valve
or other form of constriction is used it should be
spaced apart from the thread member and ad- in
vantageously is adjacent to the steam chamber.
The steam chamber may be of any convenient
dimensions su?lcient to ensure-an adequate sup
ply of steam to- each of the connections to the
45 a member connecting the st ii“ I": chamber to the
thread member, and aiiordlng passage to steam
thread members, steam being admitted at one or 45
both ends of the chamber and/or at one or more
from the steam chamber to the thread member.
points alongits length. In general pressures of
In general a plurality of thread members will be
supplied with steam by acommon steam chamber,
it or 1 'up to 5, 10, 15 or even 30 lbs.‘ per square
inch or more may be maintained in the steam
50 the threads to he steamed being passed through
the thread members while steam is being passed‘
into these members.
Prelerably the connecting member and/or the
thread member have sumcient surface exposed
chamber during operation. Where the chamber 50
is small, higher pressures may be employed than
when the chamber is large. For instance. pres
sures of 5 to 30 lbs. per square inch may be
employed with a steam chamber consisting of a
55 to the atmosphere to ensure that the steam in the
pipe having an internal diameter of it".
~ 55
2 .
The thread members are preferably of small
circular cross-section (e. g. of from 31, to 1/2 inch
internal diameter) and made of a metal, such for '
example as copper or brass, which is of good con
The length of passage of the thread through
the steam depends upon the duration of the
steaming treatment
required. For
where the thread passes'at'a speed of about 2
10 metres per minute, a three-inch passage through
posed between the thread member and the top of
the spindle, in which case the thread may enter
the thread member at a distance of, say 1/2 to 3
inches, e. g. 1 to 2 inches, from the said ?xed
guide. Preferably the twisted thread proceeds
directly from the [outlet opening of the thread
member to the traverse guide of the take-up de
vice. Therefore, with the thread member dis
posed so that its inlet opening forms a ?xed guide
above the twisting spindle and its outlet opening 10'
the steam has been found to give satisfactory
arranged to conduct the thread direct to the
results. Lengthier treatments may, however, be
employed, as for example by passing the thread
at the said speed through six to twelve inches of
traverse guide of the take-up device, the steam
ing operation may be carried out with relatively
15 steam or more. The thread member provided for
the passage of the thread is therefore of suffi
cient length to give the required period of treat
ment. To give the same period of treatment
with high speeds the length of the passage is pro
20 portionately greater. Where the inlet or outlet
openings are in the bottom of the thread member,
the opening may have a wall or rim projecting
into the member so as to prevent water collecting
in the member escaping by this opening. A suit
25 able drain may be provided to lead this water
from the thread member.
Condensation of the steam. in the connections
and in the thread members ensures that moisture
is present. This is an important feature of the
30 new apparatus, which thus overcomes dif?culties
due to the tendency of the steam to become
superheated by expansion from a higher to a
lower pressure. At the same time the conven
_ ience of using a comparatively high supply pres
35 sure. is retained. The steam chamber itself may,
however, be lagged to minimize condensation
otherwise than in the connecting and thread
One construction of the apparatus of the inven
40 tion, when ?tted on a twisting machine compris
ing a plurality of fairly closely spaced twisting
spindles, comprises a steam-pipe of say 1/_>" or
5/3" internal bore extending over the length oc
cupied by a number of spindles and connected by
copper pipes of small diameter e. g. 1%”, each
?tted with a needle valve, to a series of narrow
little deviation of the thread.
If desired a ring twisting device may be used in 15
which case the thread passes through the thread
member and is steamed on its way to the twisting
spindle. The thread is thus twisted while under
the in?uence of steam.
One construction according to the invention 20'
is illustrated in the accompanying drawing, in
Fig. 1 is a front elevation of apparatus for
steaming yarn while inserting twist therein;
.Fig. 2 is a cross-section showing the steaming 25
device in greater detail and taken along the axes
of the connecting member and the thread mem
Fig. 3 is a'modi?cation of the apparatus shown
in Fig. 1.
Referring to Fig. 2, the steaming device con
sists of a steam-pipe l of about 1/2 inch bore, into
which is screwed a plug 2 having a channel 3 for
the passage of steam and a ?lter 4 of wire gauze
to prevent passage of rust and other solid matter.
Screwed into the plug 2 is a second plug 5, to
which is soldered a copper connecting tube 6, hav
ing a length of 1% to 3 inches and an internal
diameter of about 13:; inch ?tted with cooling ?ns
1. Passage of steam from the steam-pipe l to 40
the connecting tube 6 is controlled by means of
the adjustable needle 8 mounted in the plug 5 and
seating in the hole l2. ‘A copper tube 9, having
a length of about 3 inches and an internal diam
eter of 1'; inch is soldered onto, the end of the 45
connecting tube 6 at right-angles thereto and
permits of passage of travelling thread through
the steam supplied to it from the steam-pipe l
from the spindles are conveniently passed through A by way of the needle valve 8 and the connecting
pipe 6. Porcelain collars I0, II are provided at 50
'50 them. > In order that solid particles should not the
two ends of the copper tube 9 to reduce chaf-g
be carried from the steam chamber a gauze or
other suitable ?lter is ‘provided‘at the junction ing of the thread in entering and leaving the tube.
Fig. 1 illustrates an arrangement suitable for
‘ of the steam pipe and each connecting pipe.
When in operation, each thread member is dis ) steaming yarn while inserting twist therein. Yarn
20 is twisted as it is drawn off, through a ?oating 55
55 posed on a_ twisting machine at a suitable point
in the track of a thread from a twisting spindle to ring 2|, from a bobbin 22 mounted on a vertical
the winding device. For example, each member spindle 23, as is more fully described in Patent
may be disposed so that the inlet opening for a No. 1,784,581. The yarn leaving the, twisting de
‘thread is substantially in line with a vertical. vice is passed direct to the lower end of the ver
tically disposed copper thread member 9 of the 60
60 twisting spindle. If desired, the said inlet open
ing may actually form the‘guide usually disposed steaming device illustrated in Fig. 2 and described
above the spindle to receive the vthread drawn above, the porcelain collar ll thereof being ar
over the end of the package rotating with the ranged vertically above the spindle 23 and thus
spindle. v'I'hus the twisting device may be of the serving as a thread guide for the twisting de
kind in which a device is provided to restrict the vice. The steamed and twisted thread emerges 65
ballooning of the thread, for example a ?yer or from the steaming device at H) and is taken up by
other ?oating ring device as described in Patent a suitable winding device (not illustrated) as de
No. 1,784,581. The thread may, therefore, pro
scribed in Patent No. 1,784,581 above.
The steam-pipe ] is provided with a plurality
ceed direct from the ?yer or ?oating ring de
70 vice or from the surface of the package direct - of steaming devices, as illustrated and described‘ 70
above, spaced along its length, the lower end. of
to the inlet opening of the thread member, pro
vertical pipes open at each end, and set in such
a position above each spindle that the threads
vided such opening is disposed substantially in
line with the twisting spindle at a-suitable dis
each thread member 9 being similarly vertically
tance from the spindle.
described above.
There may, however, be an additional guide dis
disposed over the spindle of a twisting device as
Fig. 3 illustrates an arrangement similar to 75
.that or Fig. 1, but modified by the provision of an
additional thread guide,“ disposed between the
top of the spindle 23 and the porcelain collar ll.
While the apparatus has been described prin
cipally with reference to the crepe twistingof
cellulose acetate threads described in the speci
?cations referred to, it may be used in any process
wherein ?laments, threads or yarns are steamed.
It is‘ not only applicable to processes of steaming
10 and twisting normally spun cellulose acetate
threads, but can be used in processes of steaming
other materials,’ e.‘g. stretched cellulose acetate
the material to be steamed, and a tube connect
ing ‘said steam chamber to said thread member,
said tube having a constriction at a point in its
length spaced apart from the thread member.
4. Apparatus for steaming travelling textile ?l
aments and threads, comprising a steam supply
chamber, a plurality of hollow thread members
for passage of the materials to be steamed, and a
tube joining each thread member to the steam
supply chamber, said tubehaving a constriction 10
at a point in its length spaced apart from the
thread member.
yarns, regenerated cellulose yarns and yarns of
natural silk, during the insertion of twist.
5. Apparatus for‘ steaming travelling textile ?l
aments and threads comprising a steam supply
Treatment 01' yarns of viscose silk in this way
permits of the production of materials of in
creased tenacity and créping power. The appa
steam chamber to said thread member, a con
ratus may also, be employed in the stretching of
travelling threads in the presence of wet steam,
by the processes described in British Patent No.
438,584. Such a stretching may, for example, be
carried out while. inserting in the threads a
, comparatively low degree~ of twist, say under 10
turns per inch, for example 2 to 5 turns per inch.
Having described my invention what I desire to
secure by Letters Patent is:-'
1. Apparatus tor steaming travelling textile
?laments and threads, comprising a steam supply
the material tobe steamed, and, joining said
necting member having, adjacent to the. steam
chamber, an adjustable constriction and compris
ing a liong tube of small cross sectional area
adapted to cool steam passing therethrough and
to ensure in the thread member a supply or steam
and moisture,
6. Apparatus for steaming a thread during the
insertion of twist therein, comprising a hollow 25
thread member for the passage of thread under
going twisting, a steam, supply chamber, a con-'
necting member joining said steam chamber to
said thread member, means adapted to cool steam ‘
chamber, a hollow thread member for passage or
the material to be steamed, a connecting member
joining said steam‘ chamber to said thread mem—
passing through said connecting member and to 30
her, and means adapted to cool steam passing
through said connecting member and to ensure
in said thread member a supply of steam cooled
ranged to insert twist in the thread while the
35 to 2.saturation.
for steaming travelling textile ?l-‘
aments and- threads, comprising a steam supply
chamber, a hollow ‘thread member for passage of
the material to be steamed and, joining said steam
chamber to said thread member, a connecting
member comprisinga tube having walls of mate
rial of good thermal conductivity and having suf
?cient surface exposed to the atmosphere to en
sure in the thread member a supply of steam
chamber, a hollow thread member for passage of 15
cooled to saturation.
3. Apparatus for steaming travelling textile
ensure in said thread member a supply of steam
cooled to saturation,‘ and a twisting spindle ar
latter is'under the in?uence of the steam in
the thread member.
" 7. Apparatus for steaming a thread during the
insertion of twist therein, comprising a twisting
spindle, a tubular thread member for the passage
of thread undergoing twisting by‘ rotation of
said spindle and disposed substantially coaxially
with the spindle so that twist is insertedwhile
the thread is in the thread member, a steam
supply chamber, a connecting member joining
said steam chamber to said thread member, and
means adapted to cool steam passing through said
connecting member anduto ensure in said thread
?laments and threads, comprising a steam supply ,member a supply of steam .cooled to saturation.
rmmar DREYFUS.
chamber, a hollow thread member :tor pae of
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