CA1037695A - Method for restringing a threadline - Google Patents
Method for restringing a threadlineInfo
- Publication number
- CA1037695A CA1037695A CA195,265A CA195265A CA1037695A CA 1037695 A CA1037695 A CA 1037695A CA 195265 A CA195265 A CA 195265A CA 1037695 A CA1037695 A CA 1037695A
- Authority
- CA
- Canada
- Prior art keywords
- threadline
- unstrung
- splicer
- running
- jet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
- B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
- B65H2701/313—Synthetic polymer threads
- B65H2701/3132—Synthetic polymer threads extruded from spinnerets
Landscapes
- Spinning Or Twisting Of Yarns (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method of stringing a broken threadline in a high-speed apparatus processing multiple running threadlines that includes the steps of splicing the broken threadline into a running threadline while maintaining tension in the broken threadline. The broken threadline is then carried by the running threadline through the machine's processing system to the windup station where the two are separated and strung up on new bobbins carried by the windup.
A method of stringing a broken threadline in a high-speed apparatus processing multiple running threadlines that includes the steps of splicing the broken threadline into a running threadline while maintaining tension in the broken threadline. The broken threadline is then carried by the running threadline through the machine's processing system to the windup station where the two are separated and strung up on new bobbins carried by the windup.
Description
1037~95 9ackground of the Invention This invention relate~ to a method of stringing high-speed multiple threadline processing equipment. More particularly, i~ relate~ to a method oi restringing a thread-line by splicing it to one which is ru~nlng and serve~ as a carrier through the processing stations to the vic~ty of a windlng device where the two threadline~ can then be separated and wound into packages.
Many advantages are gained by proce~sing multiple threadline~ simultaneously through several successive treat-ment ~tations. A~ide from reduced redundancy in proces~in~
equlpment, smaller manufacturing area and reduced capital investmen~, multiple threadline processing enables high productivity with more uniform end-to-end product qualities.
From an oEerability standpoint, however, control and h~ndling o~ multiple threadline~ are exceedingly difficult. This i~
particula;^ly true o~ present high-speed spinning equipment which operates at speeds in excess of 3,000 yards/minute ~nd with ~ery close threadline spacing.
~enerally, a threadline warp may be processed through a spinning facility or other yarn handlin~ equipment -ln one o~ ~wo ways: the parallel ends may be passed across a large number of treatment rollæ by moving past each roll ~ith only a partial S-type wrap, or the threadline m~y be helically wrapped several tlmes around a roll sur~ace for increased residence time. In such an arrangçment, the warp initially contacts the ~oving roll at one end, progressively moves across the surface and exlts at the other end. In the former case, restringing a single broken threadline, particularly around several rolls without disturbing the re~ainder of the warp, is a tedious, difficult task even for ,, `' ~ oa7~95 skilled sper~tors. In the latter helically wrapped thread-line system, restrlnging of a broken threadline is very difflcult, in fact, there is no apparent way to restring a broken threadline without interfering ~ith the moving threadl~nes.
Sum~ar of the Invention A methcd ~or restringing an unstrung threadline in a high-speed apparatus processing multiple running thread-lines moving under tension from a source to a windup said method comprising: (a) retrieving the unstrung threadline with a yarn handling device; (b) diverting a running thre~d-llne thro~gh the ~et splicer porti~n of a splicer-cutter apparatus; ~c) diverting the unstrung retrieved threadline through the jet splicer and cutter portions o~ the splicer cutter apparatus ~rhile maintaining tension in said unstrung threadline; (d) interlacing the unstrung threadline with the runnir~g threadline to form a r;plice while practically simultanecusly cutting the unstrun~ threadline upon its ex't from the ~et splicer whereby the unstrung threadline is ZO carrled by the running threadline t;o the windup; and (e) ~eparatlng the spliced threadlines at the windup for stringing on r.ew bobbins carried by the windup.
Brief Description of the Drawin~s Figure 1 is a schematic representation of a high-speed spinning machine in which the ~ethod of this inventioncan be practiced using a fluid splicing device.
Figs. 2 and 3 are enlarged top and elevation v~ews, respectively, o~ the splicing device indicated in Fig. 1.
Figs. 4 and 5 are elevation and top vie~ls, respect-ively, of an alternate e~bodim2nt of a splicin~ device useruin practicing the invention.
~)37695 Detaile~ Descri tion of the Illustrated Embodi~ents P _ _ .
In the method chosen for purposes of illustration, (Fig. 1) a threadline warp 10 comprised of multiple individual threadlines is descending from a spinneret 12. The warp 10 1~ di~ided into two sections lOa and lOb which pass on either side of Qplicer 14 and are then recombined around ~eed rolls 16? 18. The warp then advances to draw rolls 20, 22, then through guide 24 from which the threadlines o~ the warp advance to individual windups such as 26, 28, where they are wound lnto packages. A vacuum stringup gun 30 is shown in position ad~acent splicer 14 to pick up or retrieve an unstrung thread-llne deslgnated 32. The vacuum stringup gun may be of the type discl~sed by ~ller in U.S. Patent No. 2,667~964.
~.s shown in Fig. 3, splice devlce 14 lncludes an open stringup slot interlace ~et 40 similar to the type dis-closed in ~J.S. Patent No. 2,985,995 to Bunting et al., mounted on a rigid block fastened to the machine frame (not shown). A~i~acent to and coacting w1th jet 40 is a reciproc~l cutter 44 which is actually a blade attached to the movable rod end o~ the actuator 46 attached to block 42. Coactlng ~th cutte.~ 44 is a stationary blade 45 likewise fastened to block 4~. Cutter blade 44 incorporates a notch or aperture 47 ~hich serves to constrain the moving threadline during the cutting sequence. Splice device 14 is ~ounted angularly on the spinning machine (Fig. 1) relative to the threadline path in order to permit one threadline to bypass the cutting notch 47 o~ cutter 44. The splice device 14 i8 powered by pressurized air furnished to actuator 46 and Jet 40 from a sequence controller 41 which is connected to an energizin~ valve (not sho~m) and a source-of pressurized air.
In operation, stringup of a broken end with the -splice device 14 is accomplished a~ ~ollows (F~gs. 1 and 2):
a broken threadline 32 is retrie~ed ancl manually diverted and threadea through ~et 40 and the cutting notch 47 o~
cutter 44 using the vacuu~ stringup g~l 30 to maintain tersion on threadl$ne 32. A norm~l r~ming threadline 33 i~ then selected twhich is usually the co~panion of the threadline pa~r) and d~ verted through the ~et portion o~ the 8plicer only. Except for the temporary minor diversion through ~et 40, threadline 33 is running at normal process speea throughout the entire process system, Threadline 33 is normally diverted to waste at the windup en~i o~ the threadline proc~ssing system be~ore the ~plic~ng ~equence. This may conv~!niently be done by u~lng a waste y~rn aspirating ~et.
When both threadlines are in proper position in the splicing device 14 (Fig. 2), the operator triggers a ~alve (nct shown) which energizes ~et 40 and actuator 46.
Jet 40 interlaces the broken thre~,dline 32 to threadline 33.
Cutter blade 44 is retracted down~rd se~ering and releasing the now s~liced threadline 32 fro~ the stringup gun 30.
Threadlin2 32 is then carrled by threadline 33 through the entire pr~cess system. The above sequence takes place in les~ than a second. The operator then separates the thread-lines 32 and 33, transfers them to their pre~ious properpositio~s in the warp lO, restrings the thread~ines about 3eparate empty bobbins such as 26', 28' on the windup unit and $he machine is restored to its full operating condition.
In an alternate versîon of the splice device 14' depicted in Figs~ 4 and 5, a commerically available high-speed continuously operating abrasion wheel 50 is employed in place o~ reciprocal cutter 114. A cap 52 is positioned :~)37695 over the abrasion wheel. There, a slot 54 milled into cap 52 affords access to the wheel 50 for cutt~ng purposes. With the alternate version, the actual splice cut sequence commences when the operator energizes splice device 14' causing the ~roken threadline 32 to interlace with a runnin~ tbreadline 33.
As soon a~ device 14' is activated, threadl~nè 32 i8 pulled into guide slot 54 in cap 52 and against abrasion wheel 50.
Broken threadline 32 is thus severed from the stringup gun 30 leavlng a resultant tail equal in length to the space between the abrasion wheel and the splice device which is less than
Many advantages are gained by proce~sing multiple threadline~ simultaneously through several successive treat-ment ~tations. A~ide from reduced redundancy in proces~in~
equlpment, smaller manufacturing area and reduced capital investmen~, multiple threadline processing enables high productivity with more uniform end-to-end product qualities.
From an oEerability standpoint, however, control and h~ndling o~ multiple threadline~ are exceedingly difficult. This i~
particula;^ly true o~ present high-speed spinning equipment which operates at speeds in excess of 3,000 yards/minute ~nd with ~ery close threadline spacing.
~enerally, a threadline warp may be processed through a spinning facility or other yarn handlin~ equipment -ln one o~ ~wo ways: the parallel ends may be passed across a large number of treatment rollæ by moving past each roll ~ith only a partial S-type wrap, or the threadline m~y be helically wrapped several tlmes around a roll sur~ace for increased residence time. In such an arrangçment, the warp initially contacts the ~oving roll at one end, progressively moves across the surface and exlts at the other end. In the former case, restringing a single broken threadline, particularly around several rolls without disturbing the re~ainder of the warp, is a tedious, difficult task even for ,, `' ~ oa7~95 skilled sper~tors. In the latter helically wrapped thread-line system, restrlnging of a broken threadline is very difflcult, in fact, there is no apparent way to restring a broken threadline without interfering ~ith the moving threadl~nes.
Sum~ar of the Invention A methcd ~or restringing an unstrung threadline in a high-speed apparatus processing multiple running thread-lines moving under tension from a source to a windup said method comprising: (a) retrieving the unstrung threadline with a yarn handling device; (b) diverting a running thre~d-llne thro~gh the ~et splicer porti~n of a splicer-cutter apparatus; ~c) diverting the unstrung retrieved threadline through the jet splicer and cutter portions o~ the splicer cutter apparatus ~rhile maintaining tension in said unstrung threadline; (d) interlacing the unstrung threadline with the runnir~g threadline to form a r;plice while practically simultanecusly cutting the unstrun~ threadline upon its ex't from the ~et splicer whereby the unstrung threadline is ZO carrled by the running threadline t;o the windup; and (e) ~eparatlng the spliced threadlines at the windup for stringing on r.ew bobbins carried by the windup.
Brief Description of the Drawin~s Figure 1 is a schematic representation of a high-speed spinning machine in which the ~ethod of this inventioncan be practiced using a fluid splicing device.
Figs. 2 and 3 are enlarged top and elevation v~ews, respectively, o~ the splicing device indicated in Fig. 1.
Figs. 4 and 5 are elevation and top vie~ls, respect-ively, of an alternate e~bodim2nt of a splicin~ device useruin practicing the invention.
~)37695 Detaile~ Descri tion of the Illustrated Embodi~ents P _ _ .
In the method chosen for purposes of illustration, (Fig. 1) a threadline warp 10 comprised of multiple individual threadlines is descending from a spinneret 12. The warp 10 1~ di~ided into two sections lOa and lOb which pass on either side of Qplicer 14 and are then recombined around ~eed rolls 16? 18. The warp then advances to draw rolls 20, 22, then through guide 24 from which the threadlines o~ the warp advance to individual windups such as 26, 28, where they are wound lnto packages. A vacuum stringup gun 30 is shown in position ad~acent splicer 14 to pick up or retrieve an unstrung thread-llne deslgnated 32. The vacuum stringup gun may be of the type discl~sed by ~ller in U.S. Patent No. 2,667~964.
~.s shown in Fig. 3, splice devlce 14 lncludes an open stringup slot interlace ~et 40 similar to the type dis-closed in ~J.S. Patent No. 2,985,995 to Bunting et al., mounted on a rigid block fastened to the machine frame (not shown). A~i~acent to and coacting w1th jet 40 is a reciproc~l cutter 44 which is actually a blade attached to the movable rod end o~ the actuator 46 attached to block 42. Coactlng ~th cutte.~ 44 is a stationary blade 45 likewise fastened to block 4~. Cutter blade 44 incorporates a notch or aperture 47 ~hich serves to constrain the moving threadline during the cutting sequence. Splice device 14 is ~ounted angularly on the spinning machine (Fig. 1) relative to the threadline path in order to permit one threadline to bypass the cutting notch 47 o~ cutter 44. The splice device 14 i8 powered by pressurized air furnished to actuator 46 and Jet 40 from a sequence controller 41 which is connected to an energizin~ valve (not sho~m) and a source-of pressurized air.
In operation, stringup of a broken end with the -splice device 14 is accomplished a~ ~ollows (F~gs. 1 and 2):
a broken threadline 32 is retrie~ed ancl manually diverted and threadea through ~et 40 and the cutting notch 47 o~
cutter 44 using the vacuu~ stringup g~l 30 to maintain tersion on threadl$ne 32. A norm~l r~ming threadline 33 i~ then selected twhich is usually the co~panion of the threadline pa~r) and d~ verted through the ~et portion o~ the 8plicer only. Except for the temporary minor diversion through ~et 40, threadline 33 is running at normal process speea throughout the entire process system, Threadline 33 is normally diverted to waste at the windup en~i o~ the threadline proc~ssing system be~ore the ~plic~ng ~equence. This may conv~!niently be done by u~lng a waste y~rn aspirating ~et.
When both threadlines are in proper position in the splicing device 14 (Fig. 2), the operator triggers a ~alve (nct shown) which energizes ~et 40 and actuator 46.
Jet 40 interlaces the broken thre~,dline 32 to threadline 33.
Cutter blade 44 is retracted down~rd se~ering and releasing the now s~liced threadline 32 fro~ the stringup gun 30.
Threadlin2 32 is then carrled by threadline 33 through the entire pr~cess system. The above sequence takes place in les~ than a second. The operator then separates the thread-lines 32 and 33, transfers them to their pre~ious properpositio~s in the warp lO, restrings the thread~ines about 3eparate empty bobbins such as 26', 28' on the windup unit and $he machine is restored to its full operating condition.
In an alternate versîon of the splice device 14' depicted in Figs~ 4 and 5, a commerically available high-speed continuously operating abrasion wheel 50 is employed in place o~ reciprocal cutter 114. A cap 52 is positioned :~)37695 over the abrasion wheel. There, a slot 54 milled into cap 52 affords access to the wheel 50 for cutt~ng purposes. With the alternate version, the actual splice cut sequence commences when the operator energizes splice device 14' causing the ~roken threadline 32 to interlace with a runnin~ tbreadline 33.
As soon a~ device 14' is activated, threadl~nè 32 i8 pulled into guide slot 54 in cap 52 and against abrasion wheel 50.
Broken threadline 32 is thus severed from the stringup gun 30 leavlng a resultant tail equal in length to the space between the abrasion wheel and the splice device which is less than
2 inches.
~ key to the success~ul operation o~ thl~ ~ystem appears to be that the splice is ~ormed an instant before ~ the garn r~nnlng to the suction device is cut. This is ; 15 obvious when the abrasion wheel cutter is used. The blade cutter and interlace jek splicer are powered by co~pressed air from the æame source. Since the devices àre simultaneously activated, the inertia of the cutter will ~ractionally delay movement o~ the blade compared to the act~on of the inter-lacing ~et. The forming of the spl~ce be~ore cutting the threadline ser~es to keep tenslon o~ the yarn and aæ~sts irl keeping th~ threadline in i-ts proper position in the spinning ~arp.
In a particular embodiment, two or more bobbins are ~ound on the same chuck. When a break occuræ, therefore, it i8 usual to æelect a threadline running to the same ~huck ~or ~plicing with the broken threadline. Selection of a ~-~o~panion threa~line carries the broken threadline to the appropriate windup station where it may be placed on a bobbin.
In the present case, the improved spli~e ~tringup technique eliminates the protracted do~,n time of the broken 1037~95 threadline and reduces manual manipulation of the threadlines to a minimum. Stringup is e~fected at high process speeds without any risk of disruption o~ the warp. More impo~tantly, the stringup technique makes possible restringing oY helically wrapped, multiple threadline systems. The splice is of ~uf~icient compactness and strength and carries a minimum length threadline ta~l between 1/4 to 2 inches long. Th~s enables passage of the combined threadlines through the ~arious constrlcted passageways in the process such as through fluid treatment jets, guides, pins and the like. Further, the interlacing type coupling of the filaments in the splice region permits conveyance of the threadline and splice through elevated t.emperature draw æones without risk o~ threadline rupture s~.nce the individual filaments in the splice are allowed to stretch or elongate to the same extent as in the main body of the threadline.
While a preferred position ~or splice de~ice 14 . ha~ been .hown to be immediately u~stream of the ~eed rolls 16, 18 and while only one splice device 14 i9 shown to simplify the description, it is un~erstood that any number can be use~d and located at various points in the threadline p~th.
Although the invention has been speci~ically illustrate~ with reference to spinning equipment, it is applicable to other multiple roll yarn processing equipment.
~ key to the success~ul operation o~ thl~ ~ystem appears to be that the splice is ~ormed an instant before ~ the garn r~nnlng to the suction device is cut. This is ; 15 obvious when the abrasion wheel cutter is used. The blade cutter and interlace jek splicer are powered by co~pressed air from the æame source. Since the devices àre simultaneously activated, the inertia of the cutter will ~ractionally delay movement o~ the blade compared to the act~on of the inter-lacing ~et. The forming of the spl~ce be~ore cutting the threadline ser~es to keep tenslon o~ the yarn and aæ~sts irl keeping th~ threadline in i-ts proper position in the spinning ~arp.
In a particular embodiment, two or more bobbins are ~ound on the same chuck. When a break occuræ, therefore, it i8 usual to æelect a threadline running to the same ~huck ~or ~plicing with the broken threadline. Selection of a ~-~o~panion threa~line carries the broken threadline to the appropriate windup station where it may be placed on a bobbin.
In the present case, the improved spli~e ~tringup technique eliminates the protracted do~,n time of the broken 1037~95 threadline and reduces manual manipulation of the threadlines to a minimum. Stringup is e~fected at high process speeds without any risk of disruption o~ the warp. More impo~tantly, the stringup technique makes possible restringing oY helically wrapped, multiple threadline systems. The splice is of ~uf~icient compactness and strength and carries a minimum length threadline ta~l between 1/4 to 2 inches long. Th~s enables passage of the combined threadlines through the ~arious constrlcted passageways in the process such as through fluid treatment jets, guides, pins and the like. Further, the interlacing type coupling of the filaments in the splice region permits conveyance of the threadline and splice through elevated t.emperature draw æones without risk o~ threadline rupture s~.nce the individual filaments in the splice are allowed to stretch or elongate to the same extent as in the main body of the threadline.
While a preferred position ~or splice de~ice 14 . ha~ been .hown to be immediately u~stream of the ~eed rolls 16, 18 and while only one splice device 14 i9 shown to simplify the description, it is un~erstood that any number can be use~d and located at various points in the threadline p~th.
Although the invention has been speci~ically illustrate~ with reference to spinning equipment, it is applicable to other multiple roll yarn processing equipment.
Claims (12)
1. A method for restringing an unstrung thread-line in a high-speed apparatus processing multiple running threadlines moving under tension, said method comprising:
a. retrieving the unstrung threadline with a yarn handling device;
b. diverting a running threadline through the jet splicer portion of a splicer-cutter apparatus;
c. diverting the retrieved unstrung threadline through the jet splicer and cutter portions of the splicer cutter apparatus while maintaining tension in said unstrung threadline;
d. interlacing the unstrung threadline with the running threadline to form a splice while practically simul-taneously cutting the unstrung threadline upon its exit from the jet splicer whereby the unstrung threadline is carried by the running threadline.
a. retrieving the unstrung threadline with a yarn handling device;
b. diverting a running threadline through the jet splicer portion of a splicer-cutter apparatus;
c. diverting the retrieved unstrung threadline through the jet splicer and cutter portions of the splicer cutter apparatus while maintaining tension in said unstrung threadline;
d. interlacing the unstrung threadline with the running threadline to form a splice while practically simul-taneously cutting the unstrung threadline upon its exit from the jet splicer whereby the unstrung threadline is carried by the running threadline.
2. The method of claim 1, wherein the apparatus is processing the threadlines through a helically wrapped multiple threadline system.
3. The method of claim 1, wherein the apparatus is processing the threadlines through a S-wrapped multiple threadline system.
4. The method of claim 1, wherein said unstrung threadline is cut upon its exit from the jet splicer forming a splice tail between 1/4 and 2 inches in length.
5. The method of claim 1, said high-speed being in excess of 3,000 yards per minute.
6. The method of claim 1, said unstrung threadline being a broken threadline.
7. A method for restringing an unstrung thread-line in a high-speed apparatus processing multiple running threadlines moving under tension from a source to a windup, said method comprising:
a. retrieving the unstrung threadline with a yarn handling device;
b. diverting a running threadline through the jet splicer portion of a splicer-cutter apparatus;
c. diverting the retrieved unstrung threadline through the jet splicer and cutter portions of the splicer cutter apparatus while maintaining tension in said unstrung threadline;
d. interlacing the unstrung threadline with the running threadline to form a splice while practically simul-taneously cutting the unstrung threadline upon its exit from the jet splicer whereby the unstrung threadline is carried by the running threadline to the windup; and e. separating the spliced threadlines at the windup, for stringing on new bobbins carried by the windup.
a. retrieving the unstrung threadline with a yarn handling device;
b. diverting a running threadline through the jet splicer portion of a splicer-cutter apparatus;
c. diverting the retrieved unstrung threadline through the jet splicer and cutter portions of the splicer cutter apparatus while maintaining tension in said unstrung threadline;
d. interlacing the unstrung threadline with the running threadline to form a splice while practically simul-taneously cutting the unstrung threadline upon its exit from the jet splicer whereby the unstrung threadline is carried by the running threadline to the windup; and e. separating the spliced threadlines at the windup, for stringing on new bobbins carried by the windup.
8. The method of claim 7, wherein the apparatus is processing the threadlines through a helically wrapped multiple threadline system.
9. The method of claim 7, wherein the apparatus is processing the threadlines through a S-wrapped multiple threadline system.
10. The method of claim 7, wherein said unstrung threadline is cut upon its exit from the jet splicer forming a spllce tail between 1/4 and 2 inches in length.
11. The method of claim 7, said high-speed being in excess of 3,000 yards per minute.
12. The method of claim 7, said unstrung threadline being a broken threadline.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US343172A US3863435A (en) | 1973-03-20 | 1973-03-20 | Method for restringing a threadline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1037695A true CA1037695A (en) | 1978-09-05 |
Family
ID=23345002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA195,265A Expired CA1037695A (en) | 1973-03-20 | 1974-03-18 | Method for restringing a threadline |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3863435A (en) |
| JP (1) | JPS49125621A (en) |
| BE (1) | BE812505A (en) |
| CA (1) | CA1037695A (en) |
| DE (1) | DE2413449C2 (en) |
| FR (1) | FR2222297B1 (en) |
| GB (1) | GB1435416A (en) |
| IT (1) | IT1005673B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002013A (en) * | 1976-01-13 | 1977-01-11 | E. I. Du Pont De Nemours And Company | Process and apparatus |
| US4143506A (en) * | 1977-12-23 | 1979-03-13 | Owens-Corning Fiberglas Corporation | Method and apparatus for introducing a strand into a continuously advancing roving |
| US4391086A (en) * | 1981-02-24 | 1983-07-05 | E. I. Du Pont De Nemours & Co. | Apparatus for restringing multiple threadlines |
| US4999891A (en) * | 1989-10-31 | 1991-03-19 | E. I. Du Pont De Nemours And Company | Yarn handling device and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2648890A (en) * | 1951-01-04 | 1953-08-18 | Du Pont | Apparatus and method for combining yarns |
| BE514608A (en) * | 1951-12-17 | |||
| US2985995A (en) * | 1960-11-08 | 1961-05-30 | Du Pont | Compact interlaced yarn |
| US3167847A (en) * | 1961-11-28 | 1965-02-02 | American Enka Corp | Treatment of multi-filament yarn |
| NL127212C (en) * | 1962-11-14 | |||
| NL129516C (en) * | 1965-06-01 | |||
| US3339362A (en) * | 1966-07-05 | 1967-09-05 | Du Pont | Method of joining strands |
| US3619868A (en) * | 1970-01-19 | 1971-11-16 | Eastman Kodak Co | Method and apparatus for assimilating a yarn end in tow |
| US3648336A (en) * | 1970-10-07 | 1972-03-14 | Eastman Kodak Co | Portable yarn handling device |
| US3732678A (en) * | 1971-11-04 | 1973-05-15 | Du Pont | Apparatus for joining filaments to a tow |
-
1973
- 1973-03-20 US US343172A patent/US3863435A/en not_active Expired - Lifetime
-
1974
- 1974-03-15 IT IT7412611Q patent/IT1005673B/en active
- 1974-03-18 CA CA195,265A patent/CA1037695A/en not_active Expired
- 1974-03-18 JP JP49030162A patent/JPS49125621A/ja active Pending
- 1974-03-19 GB GB1216474A patent/GB1435416A/en not_active Expired
- 1974-03-19 FR FR7409200A patent/FR2222297B1/fr not_active Expired
- 1974-03-19 BE BE142169A patent/BE812505A/en unknown
- 1974-03-20 DE DE2413449A patent/DE2413449C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT1005673B (en) | 1976-09-30 |
| JPS49125621A (en) | 1974-12-02 |
| DE2413449A1 (en) | 1974-10-10 |
| BE812505A (en) | 1974-09-19 |
| DE2413449C2 (en) | 1984-01-19 |
| US3863435A (en) | 1975-02-04 |
| GB1435416A (en) | 1976-05-12 |
| FR2222297A1 (en) | 1974-10-18 |
| FR2222297B1 (en) | 1978-01-13 |
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