US2944379A - Drawing and twisting apparatus - Google Patents
Drawing and twisting apparatus Download PDFInfo
- Publication number
- US2944379A US2944379A US752493A US75249358A US2944379A US 2944379 A US2944379 A US 2944379A US 752493 A US752493 A US 752493A US 75249358 A US75249358 A US 75249358A US 2944379 A US2944379 A US 2944379A
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- US
- United States
- Prior art keywords
- strips
- strip
- pulleys
- pair
- movable frame
- 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 - Lifetime
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-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/08—Paper yarns or threads
Definitions
- End plate 20 is providedwith shaft 24 which is rotatably mounted in the frame part -10 while the .end plate 22 is provided with a shaft 26 which is rotatably mounted in the frame part '12, the shafts" having axially aligned bores 28 and 30 through which the strips 32', see Fig. v3, are drawn to form the twistedA material 34.
- a suitable drive pulley 36 is secured to the shaft 24 for operating the apparatus and if desired; a pulley 38 may be connected to the shaft 26 for operating a suitable mechanism, not shown, for cutting lhe stick material 34 into convenient lengths. It will be readilyunderstood from the foregoing that rotation of the drive pulley 36 will cause rotation of the movable frame 14 which'latter is supported in the frame parts 18 and 12 bythe shafts 24 and 26.
- Novel means are provided by the present invention for simultaneously drawing and twisting the material as it passes through the bores 28 and 38 and, as shown, such rr'ieans includes a pair of V ⁇ belts 46 and 42 which frictionally grip the material 34 in the manner shown in Figs. l, 2 and 5. More particularly, the belt 40 is carried 'by spaced-apart pulleys i4 and 46, while the belt or strips about the axis of movement thereofv whereby the twisted stick or cord material is formed
- Another object of the invention is to provide a sinpli -edconstruction including a movable frame together or strips ⁇ o'r'st ⁇ r'ar ⁇ ids. f
- Still anotherobject is to provide a novel arrangement' of a stationary pulley member and movable pulleys for securing the drawing and twisting operations during rotav tion ofthe movable frame.
- a still further object is to provide vin au 'apparatus of the foregoing character, a novel mechanism for readily.
- a further object is to provide a novel drawing and twisting apparatus which is relatively simple in construe-- tion and wherein the parts are readily available for'insp'ection and adjustment;
- FIG. 1 is a top View partly in section 'ofa combined drawing and twisting apparatus embodying the principles ofthe present invention
- Fig. 2 isan axial sectional view of the apparatus taken along line 2--2 of Fig. 1;
- Figs. 3 and 4 are diagrammatic perspective vie-ws showing the apparatus of Fig. l in two positions of operation; and Y Fig. 5 isV a transverse sectional View taken along line s s0fFig.2.
- the novel combined drawing and twistingapparatus of the present invention is illustrated therein as including stationary frame parts 10 and l2 together with ja movable frame 14, the -latter comprising side plates 16 and 18 together with ⁇ s"be lts to simultaneously/'drawand twist .
- the strip 42 is carried by pulleys 48 land Se, all of said pulleys being positioned between the plates 16 and 18.
- Pulleys 46 and 58 constitute idler pulleys and are ⁇ fixed to shafts 5 2 and 54' respectively, whichare ⁇ rotatably mounted in the side plates le and 18 as shown; Pulleys 44 Aand 48 on the other hand 'are driving pulleys which are .fixed to driving shafts 56 and S8 respectively, the latter being 30 ⁇ with'novelfmotion translating mechanism for moving the-v rotatably mounted in the side plates leand 1 8 with tlre shaft 56 extending through; the :plate 16 and with thev shaft 58)extending through the plate 18, see Fig. I1.
- Such means includes sprocket wheels 60 and 62 which are respectively/'secured to the shafts 56 and 58 and which are driven by respective sprocket chains 68 and '710.
- a novelari'angeQ ment including a stationary pulley member 76, 78 i ⁇ s utilized. As shown, the stationary pulley member, 76, 78 i ⁇ s utilized. As shown, the stationary pulley member, 76, 78 i ⁇ s utilized.
- ⁇ sleeve 80 within which the shaft 24 is rotatably mounted and such sleeve is fixed to the frame part 10 as by means of a set screw 82.
- v -rAri endless belt 84 is trained over the stationary pulley member 76, 7 8 andover driving pullleys 86 yand 88 in thel manner shown in Figs; l, 3 and 4, the-driving pulley 86 being secured to sprocket 64 and they in turn being rotatably mounted on fixed shaft'72 and the driving pulley 88 being secured to sprocket 66 and they in turn being rotatably mounted on fixed shaft 74.
- A9 6 are provided for suitably guiding Ithe belt during the apparatus, the rollers 90, 92 being operation of secured to a shaft 98 and the rollers 9 4, 96 being secured to a shaft 190.
- the shafts 23 and 188 are respectively supported by bearing sleeves 102 land 104 which in turn are mounted on the end plate 28 as shown.
- Means are' preferably provided'for adjusting the endless belts 40 and 42 in order to adjust the frictional grip between the belts and the material 34. As shown, see Figs.
- such means comprises a pair of plates los and S positioned between the side plates lo and )i8 and rotatably carrying a plurality of rollers Mtl which bear upon the upper surface of the endless belt 4i);
- a piurality of rollers i12 bear upon the under surface of the endless belt 42 and the rollers 112 are rotatably carried by a pair of plates 114 and 116.
- the position of the pairs of plates and hence the rollers supported thereby may be readily adjusted by the adjusting nuts 118 and 12) in order to adjust the frictional contactbetween the material 3d and the endless belts itl and 42.
- the strip or strips 32 are fed through a suitable guide or die member 22 and threaded through the bore 23, between thc belts 49 and 42 and thence through the bore 3i?.
- the driving pulley 36 is then rotated from any suitable source of power such as an electric motor, not shown, whereupon the endless belts 40 and 42 will be rotated in a direction to draw the material 34 through the bore 2: and feed the material through the bore 30.
- the apparatus will function to rotate the belts 40 and 42 about the axis of advancement of the material 34 to simultaneously twist the material as it is drawn lengthwise. More particularly, and assuming in Figs.
- the present invention is particularly well adapted to the formation of substantially rigid stick material from a relatively narrow strip 'or strips of plastic film which are self-sealing under the application-of heat and tension, such as shown in my copending application Serial Number 739,258, filed June 2, 1958, for Twisted Sticks and Method of Manufacture.
- the guide 122 may be a heated die member and the strip or strips 32 may be angularly fed thereto in the manner disclosed in said copending application and drawn therethrough under tension by the apparatus disclosed herein.
- the invention may be utilized for drawing and twisting various types of strip or strand materials as Well understood by those skilled in the art. Reference will therefore be had to the appended claims for a denition of the limits of the invention.
- Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material comprising a pair of spaced-apart rotatable shafts each provided with a bore for receiving said strip or strips, a pair of endles belts positioned between said shafts for frictionally gripping said strip or strips and for feeding the strip or strips through said bores and along a path between said bores, a frame, spaced-apart pulleys rotatably carried Vby said frame for supporting said belts, means for rotating said frame, pulleys and belts about said path to twist the strip or strips, and means for rotating said pulleys and belts to simultaneously draw the strip or strips through one of said bores and to feed the strip or strips through the other bore, including a pair of rotatable pulleys, a stationary pulley member and belt means connecting said pair of rotatable pulleys with said statonary pulley member.
- Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material comprising a stationary frame, a movable frame having a pair of shafts rotatably mounted in said stationary frame, said shafts being provided with axially aligned bores through which said strip or strips are fed, a pair of endless belts carried by said movable frame and positioned to frictionally grip said strips, and means for rotating said belts to draw the strip or strips through one of said bores and feed the strip or strips through the other bore and for simultaneously rotating the belts about the path of movement of said strip or strips to twist the latter including a pair of rotatable pulleys carried by said movable frame, a stationary pulley member carried by said stationary frame, and belt means connecting the said stationary member and said rotatable pulleys.
- Apparatus for drawing and twisting relatively thin and narrow strip or strips to form a stick material comprising a stationary frame7 a movable frame having a pair of shafts rotatably mounted in said stationary frame, said shafts being provided with axially aligned bores through which said strip or strips are fed along a path of movement, a pair of endless belts carried by said movable frame and positioned to frictionally grip said strip or strips, means for rotating said movable frame and belts about said path to twist the strip or strips, a pair of driving pulleys forrsimultaneously rotating said endless belts to draw the strip or strips through one of said bores and feed the strip or strips through the other bore, and means for rotating said driving pulleys including a pair of rotatable pulleys carried by said movable frame, a stationary pulley member carried by said stationary frame, and belt means connecting the respective pulleys.
- Y 4 Apparatus as set forth in claim 3 which comprises in addition, means carried by the
- Apparatus as set forth in claim 3 which includes in addition, a pair of sprocket wheels carried by said movable frame, and means rotatably connecting the respective sprocket wheels with the respective rotatable pulleys.
- Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material cornprising a stationary frame, a movable frame having a pair of spaced-apart shafts rotatably mounted in said stationary frame, each of said shafts being provided with a bore through which said strip or strips are fed, a pair of rotatable members carried by said movable frame and positioned between said shafts for frictionally gripping Y said strip or strips and for feeding the latter through said bores and along a path between said bores, means for rotating said movable frame and rotatable members about said path to twist the strip or strips, a pair of sprocket Wheels rotatably carried by the movable frame and respectively connected with said rotatable members, and means for rotating said sprocket wheels and rotatable members to simultaneously draw V the strip or strips through one of said bores and to feed the strip or strips through the other bore, including a pair or" rotatable pulleys carried by the movable
Description
July l2, 1960 H. E. DAvls DRAWING AND TwIsTING APPARATUS Filed Aug. 1, 1958 2 Sheets-Sheet 1 HARR y E. 0A w;
ATTORNEYJ July l2, 1960 H. E. DAVIS DRAWING AND TwIsTING APPARATUS 2 Sheets-Sheet 2 Filed Aug. 1, 1958 INVENTOR HARRY E. DA v/.s
ATTORNEY endles views:
United States 'Patent #of This invention relates to a combined drawingand twisting apparatus and more particularly toa mechanism for drawing a relatively .narrow and thin nlm-like strip orstrips or strands of plastic vor other material such as paper,- Afor example, while simultaneously twisting the strip or strips about the axis of travel thereof to form a stickor cord material. One of the objects of the present invention is to pro'- vide a combined drawing and twisting apparatus which includes a pair of endless belts which are so arranged as to f rictionally grip and draw the strip or strips from one point to 4another` while simultaneously -twistingV the strip 2 end plates and 22. End plate 20 is providedwith shaft 24 which is rotatably mounted in the frame part -10 while the .end plate 22 is provided with a shaft 26 which is rotatably mounted in the frame part '12, the shafts" having axially aligned bores 28 and 30 through which the strips 32', see Fig. v3, are drawn to form the twistedA material 34. A suitable drive pulley 36 is secured to the shaft 24 for operating the apparatus and if desired; a pulley 38 may be connected to the shaft 26 for operating a suitable mechanism, not shown, for cutting lhe stick material 34 into convenient lengths. It will be readilyunderstood from the foregoing that rotation of the drive pulley 36 will cause rotation of the movable frame 14 which'latter is supported in the frame parts 18 and 12 bythe shafts 24 and 26.
Novel means are provided by the present invention for simultaneously drawing and twisting the material as it passes through the bores 28 and 38 and, as shown, such rr'ieans includes a pair of V` belts 46 and 42 which frictionally grip the material 34 in the manner shown in Figs. l, 2 and 5. More particularly, the belt 40 is carried 'by spaced-apart pulleys i4 and 46, while the belt or strips about the axis of movement thereofv whereby the twisted stick or cord material is formed Another object of the invention is to provide a sinpli -edconstruction including a movable frame together or strips`o'r'st`r'ar`ids. f
Still anotherobject is to provide a novel arrangement' of a stationary pulley member and movable pulleys for securing the drawing and twisting operations during rotav tion ofthe movable frame.
A still further object is to provide vin au 'apparatus of the foregoing character, a novel mechanism for readily.
adjusting the frictional'engagement between the endless belts and the material to be drawn and twisted. f
A further object is to provide a novel drawing and twisting apparatus which is relatively simple in construe-- tion and wherein the parts are readily available for'insp'ection and adjustment;
Other objects and novel features of the invention will appear more fully hereinafter from a considerationjof the -following detailed description whentaken in connecticn with the accompanying drawings illustrativepf one form of the invention. It is expressly understood however, that the drawings are utilized for purposes of illustration only and are not to be taken las a definition of the limits of the invention, reference being had for this purpose to the appended claims.
Referring to the drawings, wherein similar 4reference characters refer to similar parts throughout'the 'sever-a1 Fig. 1 is a top View partly in section 'ofa combined drawing and twisting apparatus embodying the principles ofthe present invention;
Fig. 2 isan axial sectional view of the apparatus taken along line 2--2 of Fig. 1;
Figs. 3 and 4 are diagrammatic perspective vie-ws showing the apparatus of Fig. l in two positions of operation; and Y Fig. 5 isV a transverse sectional View taken along line s s0fFig.2.
Referring more particularly 'toiFigs 1 and 2, the novel combined drawing and twistingapparatus of the present invention is illustrated therein as including stationary frame parts 10 and l2 together with ja movable frame 14, the -latter comprising side plates 16 and 18 together with `s"be lts to simultaneously/'drawand twist .the strip 42 is carried by pulleys 48 land Se, all of said pulleys being positioned between the plates 16 and 18. Pulleys 46 and 58 constitute idler pulleys and are `fixed to shafts 5 2 and 54' respectively, whichare `rotatably mounted in the side plates le and 18 as shown; Pulleys 44 Aand 48 on the other hand 'are driving pulleys which are .fixed to driving shafts 56 and S8 respectively, the latter being 30` with'novelfmotion translating mechanism for moving the-v rotatably mounted in the side plates leand 1 8 with tlre shaft 56 extending through; the :plate 16 and with thev shaft 58)extending through the plate 18, see Fig. I1.
Thus it will be seen that -upon rotation of, the drive pulleys 44 and 48 in opposite direction s, the adjacentportions ofthe endless belts 48 and 42 will travel Ifrom right to left as viewed in Figs. l and 2 to drawthe material 3 4 through the bore 28 yand pass it through the bore 30.
One ofthe important features of the invention in the novel mechanism which is employedfor rotating the drive pulleys ldand 48 in opposite directions. In the form of the invention illustrated, such means includes sprocket wheels 60 and 62 which are respectively/'secured to the shafts 56 and 58 and which are driven by respective sprocket chains 68 and '710. Sprocket wheel "64 i s' rotatably 4mounted on shaft 72 which Vis fixed to sideplate '16 while `sprocket wheel 66 is rotatably mounted `on shaft 74which is fixed to side plate 18,.the fixed shafts being in axial alignment as shown in Fig. 5. In order to rotate the ' sprocket wheels 64 and 66 durL ingrotation of the movable frame 14, a novelari'angeQ ment including a stationary pulley member 76, 78 i`s utilized. As shown, the stationary pulley member, 76,
78 is formed with a `sleeve 80 within which the shaft 24 is rotatably mounted and such sleeve is fixed to the frame part 10 as by means of a set screw 82. v -rAri endless belt 84 is trained over the stationary pulley member 76, 7 8 andover driving pullleys 86 yand 88 in thel manner shown in Figs; l, 3 and 4, the-driving pulley 86 being secured to sprocket 64 and they in turn being rotatably mounted on fixed shaft'72 and the driving pulley 88 being secured to sprocket 66 and they in turn being rotatably mounted on fixed shaft 74. A pair of guide rollers 96, 92 and 94,
A9 6 are provided for suitably guiding Ithe belt during the apparatus, the rollers 90, 92 being operation of secured to a shaft 98 and the rollers 9 4, 96 being secured to a shaft 190. The shafts 23 and 188 are respectively supported by bearing sleeves 102 land 104 which in turn are mounted on the end plate 28 as shown.
Means are' preferably provided'for adjusting the endless belts 40 and 42 in order to adjust the frictional grip between the belts and the material 34. As shown, see Figs.
'2,944,379 Patented July 12, 1960 Z and 5, such means comprises a pair of plates los and S positioned between the side plates lo and )i8 and rotatably carrying a plurality of rollers Mtl which bear upon the upper surface of the endless belt 4i); In like manner, a piurality of rollers i12 bear upon the under surface of the endless belt 42 and the rollers 112 are rotatably carried by a pair of plates 114 and 116. The position of the pairs of plates and hence the rollers supported thereby may be readily adjusted by the adjusting nuts 118 and 12) in order to adjust the frictional contactbetween the material 3d and the endless belts itl and 42.
In operation, it will be understood that the strip or strips 32 are fed through a suitable guide or die member 22 and threaded through the bore 23, between thc belts 49 and 42 and thence through the bore 3i?. The driving pulley 36 is then rotated from any suitable source of power such as an electric motor, not shown, whereupon the endless belts 40 and 42 will be rotated in a direction to draw the material 34 through the bore 2: and feed the material through the bore 30. At the same time, the apparatus will function to rotate the belts 40 and 42 about the axis of advancement of the material 34 to simultaneously twist the material as it is drawn lengthwise. More particularly, and assuming in Figs. 3 and 4 that the driving pulley 36 and movable frame 14 are moved in a counterciockwise direction as denoted by the arrow A, it will be understood that due to the co operation between the stationary pulley member 76, 7S, the endless belt ed and the driving pulleys 86, $8, the latter will be rotated in opposite directions to cause rotation in opposite directions of the sprocket wheels 66 and 62 through cooperation between the latter and the respective driving sprockets 64 `and 65 and the sprocket chains 68 and 70. Since the sprocket wheels 69 and 62 are connected with the driving pulleys 44 and i8 through the respective shafts 56 and S8, the said driving pulleys will rotate in opposite directions and the portions of the endless belts 4t) and 42 in frictional engagement with the material 34 `will travel from right to left, as viewed in Figs. l4 in order to draw the material through the bore 28 and feed it through the bore 3% as the material is simultaneously twisted.
The present invention is particularly well adapted to the formation of substantially rigid stick material from a relatively narrow strip 'or strips of plastic film which are self-sealing under the application-of heat and tension, such as shown in my copending application Serial Number 739,258, filed June 2, 1958, for Twisted Sticks and Method of Manufacture. ln such case, the guide 122 may be a heated die member and the strip or strips 32 may be angularly fed thereto in the manner disclosed in said copending application and drawn therethrough under tension by the apparatus disclosed herein. However, the invention may be utilized for drawing and twisting various types of strip or strand materials as Well understood by those skilled in the art. Reference will therefore be had to the appended claims for a denition of the limits of the invention.
What is claimed is:
1. Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material, comprising a pair of spaced-apart rotatable shafts each provided with a bore for receiving said strip or strips, a pair of endles belts positioned between said shafts for frictionally gripping said strip or strips and for feeding the strip or strips through said bores and along a path between said bores, a frame, spaced-apart pulleys rotatably carried Vby said frame for supporting said belts, means for rotating said frame, pulleys and belts about said path to twist the strip or strips, and means for rotating said pulleys and belts to simultaneously draw the strip or strips through one of said bores and to feed the strip or strips through the other bore, including a pair of rotatable pulleys, a stationary pulley member and belt means connecting said pair of rotatable pulleys with said statonary pulley member.
Z. Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material, comprising a stationary frame, a movable frame having a pair of shafts rotatably mounted in said stationary frame, said shafts being provided with axially aligned bores through which said strip or strips are fed, a pair of endless belts carried by said movable frame and positioned to frictionally grip said strips, and means for rotating said belts to draw the strip or strips through one of said bores and feed the strip or strips through the other bore and for simultaneously rotating the belts about the path of movement of said strip or strips to twist the latter including a pair of rotatable pulleys carried by said movable frame, a stationary pulley member carried by said stationary frame, and belt means connecting the said stationary member and said rotatable pulleys.
3. Apparatus for drawing and twisting relatively thin and narrow strip or strips to form a stick material, comprising a stationary frame7 a movable frame having a pair of shafts rotatably mounted in said stationary frame, said shafts being provided with axially aligned bores through which said strip or strips are fed along a path of movement, a pair of endless belts carried by said movable frame and positioned to frictionally grip said strip or strips, means for rotating said movable frame and belts about said path to twist the strip or strips, a pair of driving pulleys forrsimultaneously rotating said endless belts to draw the strip or strips through one of said bores and feed the strip or strips through the other bore, and means for rotating said driving pulleys including a pair of rotatable pulleys carried by said movable frame, a stationary pulley member carried by said stationary frame, and belt means connecting the respective pulleys. Y 4. Apparatus as set forth in claim 3 which comprises in addition, means carried by the movable frame for adjusting the frictional engagement between the endless belts and the strips.
5. Apparatus as set forth in claim 3 which includes in addition, a pair of sprocket wheels carried by said movable frame, and means rotatably connecting the respective sprocket wheels with the respective rotatable pulleys.
6. Apparatus for drawing and twisting a relatively thin and narrow strip or strips to form a stick material, cornprising a stationary frame, a movable frame having a pair of spaced-apart shafts rotatably mounted in said stationary frame, each of said shafts being provided with a bore through which said strip or strips are fed, a pair of rotatable members carried by said movable frame and positioned between said shafts for frictionally gripping Y said strip or strips and for feeding the latter through said bores and along a path between said bores, means for rotating said movable frame and rotatable members about said path to twist the strip or strips, a pair of sprocket Wheels rotatably carried by the movable frame and respectively connected with said rotatable members, and means for rotating said sprocket wheels and rotatable members to simultaneously draw V the strip or strips through one of said bores and to feed the strip or strips through the other bore, including a pair or" rotatable pulleys carried by the movable frame, a stationary pulley member carried by the stationary frame, an endless belt connecting said pair of rotatable pulleys with said stationary pulley membenvand means including a pair of sprocket chains respectively connecting saidV pair of rotatable pulleys with said sprocket wheels.V
No references cited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752493A US2944379A (en) | 1958-08-01 | 1958-08-01 | Drawing and twisting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752493A US2944379A (en) | 1958-08-01 | 1958-08-01 | Drawing and twisting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2944379A true US2944379A (en) | 1960-07-12 |
Family
ID=25026540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US752493A Expired - Lifetime US2944379A (en) | 1958-08-01 | 1958-08-01 | Drawing and twisting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2944379A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3380243A (en) * | 1965-07-26 | 1968-04-30 | American Mfg Company Inc | Plastic cordage |
| US3413793A (en) * | 1966-04-29 | 1968-12-03 | Western Electric Co | Sheave capstan assembly for cable takeup apparatus |
| CN102154862A (en) * | 2011-04-11 | 2011-08-17 | 周春花 | Method and equipment for manufacturing packing rope and packing rope |
-
1958
- 1958-08-01 US US752493A patent/US2944379A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3380243A (en) * | 1965-07-26 | 1968-04-30 | American Mfg Company Inc | Plastic cordage |
| US3413793A (en) * | 1966-04-29 | 1968-12-03 | Western Electric Co | Sheave capstan assembly for cable takeup apparatus |
| CN102154862A (en) * | 2011-04-11 | 2011-08-17 | 周春花 | Method and equipment for manufacturing packing rope and packing rope |
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