CA1036341A - Slide fastener - Google Patents
Slide fastenerInfo
- Publication number
- CA1036341A CA1036341A CA215,968A CA215968A CA1036341A CA 1036341 A CA1036341 A CA 1036341A CA 215968 A CA215968 A CA 215968A CA 1036341 A CA1036341 A CA 1036341A
- Authority
- CA
- Canada
- Prior art keywords
- warp threads
- slide fastener
- threads
- row
- supporting tape
- 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
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
- A44B19/52—Securing the interlocking members to stringer tapes while making the latter
- A44B19/54—Securing the interlocking members to stringer tapes while making the latter while weaving the stringer tapes
Landscapes
- Slide Fasteners (AREA)
- Looms (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In the construction of a slide fastener a stringer is made as follows. A helical row of slide fastener elements is fed parallel to warp threads for forming a supporting tape weft threads are inserted to weave a supporting tape and to join the helical row of slide fastener links to a supporting tape.
The helical row of slide fastener links is held in a zero plane and during the weaving is guided along a straight line.
Joining warp threads are warped in equal numbers above and below the zero plane so as to be spaced from the row of slide fastener links and disposed before the coupling surfaces thereof.
The warp threads of the woven supporting tape are warped on the other side of the row of slide fastener links below the zero plane. The joining warp threads and the warp threads of the woven supporting tape are formed into separate sheds. Two weft threads for the supporting tape arc simultaneously pushed through the sheds both above and below the zero plane, respectively, in such a manner that the two upper weft threads pass at least through the sheds formed by the joining warp threads and the lower weft thread pass through the sheds formed by the joining warp threads and the warp threads of the supporting tape thus pulls the forming warp threads from one side of the row into the convolutions of the helical row by means of the weft threads. Selvages are formed from the warp threads at the respective edges of the woven fabric.
In the construction of a slide fastener a stringer is made as follows. A helical row of slide fastener elements is fed parallel to warp threads for forming a supporting tape weft threads are inserted to weave a supporting tape and to join the helical row of slide fastener links to a supporting tape.
The helical row of slide fastener links is held in a zero plane and during the weaving is guided along a straight line.
Joining warp threads are warped in equal numbers above and below the zero plane so as to be spaced from the row of slide fastener links and disposed before the coupling surfaces thereof.
The warp threads of the woven supporting tape are warped on the other side of the row of slide fastener links below the zero plane. The joining warp threads and the warp threads of the woven supporting tape are formed into separate sheds. Two weft threads for the supporting tape arc simultaneously pushed through the sheds both above and below the zero plane, respectively, in such a manner that the two upper weft threads pass at least through the sheds formed by the joining warp threads and the lower weft thread pass through the sheds formed by the joining warp threads and the warp threads of the supporting tape thus pulls the forming warp threads from one side of the row into the convolutions of the helical row by means of the weft threads. Selvages are formed from the warp threads at the respective edges of the woven fabric.
Description
This invention relates to a method of makiny a slide fastener, in which a helical series of slide fast~ner links is warped parallel to warp threads and the filling threads are inserted to weave a strap and to join the helical series of slide fastener links to the strap, also to a slide fas~ener made by this method and to a weaving machine for carrying out the method.
Series of slide fastener ].inks made from a synthetic thermoplastic monofilament and intended for use in the slide fasteners according to the invention are known in the form of flattened helical springs or meanders bent in U-shape having individual turns or links provided with coupling surfaces. Such helical series of slide fastener links may be sewed to a strap by means of a sewing machine, in which the needle penetrates between the turns and the needle thread is tied by a looper thread. The resulting loop is forwarded to the next turn in that the helix is advanced by one turn.
The sewing machine needle then penetrates the next turn and the cycle of operation is continual~y repeated. The connection :
; 20 of helical slide fastener links to a strap by a sewing machine ~, is a time-consuming operation, and pitch errors cannot be `~ reliably precluded in that known method.
Known weaving methods for making slide fasteners ; . , are faster and more efficient. A weaving method of making slide fasteners is known in which the slide fastener helix is first extended in the form of a straight-line monofilament as a filling thread between warp threads. The helix as such is L
:: i - 1 - .~b~
'~
~i `- - . -103~;341 formed only during the weavlng operation and i9 fixed in and held by the warp threads. That weaving method has the disad-vantage that the helix is fixed only during the weaving operation by the warp threads. A thermal aftertreatment is usually required to fix the helix. The helix as such is not sufficiently fixed in the warp threads so that the precision and stability of the slide fastener may be adversely affected to a high degree.
In a known method (Handley) of the kind defined first hereinbefore, a helical series of slide fastener links is supplied through a tube, which serves as a warp thread and participates in the formation of a shed. As the shed is formed, the tube is pivotally moved downwardly and upwardly through the zero plane so that the filling threads which are entered slip off the tube and enter between the turns. T~e helix disposed in the tube is advanced by a gear in steps corresponding to the pitch thereof. Because during the for-mation of the shed the outlet opening of the tube departs from the zero plane and part of the helix is thus pulled or moved out of the tube, it is not possible always to define exactly that turn into which the filling is inserted. For this reason in that known method different numbers of filling threads may enter each turn even i~ a plurality of shots are inserted.
This is due to the fact that from the aspect of weaving tech-nology the helix constitutes a warp thread on which the fil-ling threads which have been inserted cannot slide because they are located in the turns. For this reason the known weaving method results in irregularly located slide fasteners, which may also have pitch defects. Because only one needle in used in the known weaving method, the filling threads are .,;, , .
~ ,~ ' ' ' ' ' . .
. .
- 10363~1 pulled lnto those arcs of the turn# of the series of sllde fastener links whlch are opposite to the coupling surfaces so that these arcs are filled by the woven fabric. As a re-sult, when the complete slide fastener has been woven the slider slides on the woven fabric and may destroy the same.
It i5 an ob~ect of the invention to provide a slide fastener in which a helical series of links has been ~oined and fixed to the strap with a highly accurate pitch by means of ~oinin~ threads.
In a method of the kind described first herinbefore this ob~ect i5 accomplished according to the invention in that the helical series of slide fastener links is held in the zero plane and during the weaving is moved along a straight line without forming a shed, that joining warp threads are warped in equal numbers above and below the zero plane so as to be spaced from the series of slide fastener links and disposed before the coupling surfaces thereof, that the warp threads of the woven backing fabric are warped on the other side of the series of slide fastener links below the zero plane, that the ~oining warp threads and the warp threads of the backing woven fabric are formed into separate sheds and two filling threads are simultaneous-ly inserted above and below the zero plane, respectively, in such a manner that the upper filling thread extends only through the joining warp threads and the lower filling thread extends through the ~oining warp threads and the warp threads of the backing woven fabric, and that selvages are formed ; from the warp threads at the respective edges of the woven fabric~ The slide fastener which has been made by the method according to the inventlon is secured to the strap and for .
,:.
.
~a3634l this reason cannot break open. The rear arcs of the series of slide fastener links are free of the woven fabric so that the slider which has been applied can sllde on the helix of plastics material. Since two needles are used to insert the filling, the weaving rate is muchilincreased compared to known methods~because four threads are inserted by each double shot per shed. The ~oining threads disposed before the series of slide fastener links are pulled into the turns of said series by the simultaneously inserted upper and lower filling threads.
According to a preferred feature of the invention, additional warp threads are warped above the series of slide fastener links and form separate sheds, through which the upper filling thread is lnserted. The use of these addi-tional warp threads results in the formation of a narrow cover strip, which is joined by weaving to the upper side of the series of slide fastener links.
Additional warp threads are suitably warp~
ed also below the series of slide fastener links and partici_ pate in the shed formed by the warp threads for the backing woven fabric and are shot through by the lower filling threads As a result, the strap formed by the backing woven fabric is extended below the series of slide fastener links so that the stability and fixation thereof are further improved.
According to a further preferred feature of the invention, the upper filling thread is also inserted through the sheds of the backing woven Fabric so that the woven r fabric embraces the series of slide fastener links in the shape of a wedge or V.
The method according to the invention ~ -may be performed on a conventional weaving machine. According to the invention, a tube ls provlded, which lies in the zero plane and serves to supply the serles of slide fastener llnks.
The series of slide fastener links is guided in a troublefree manner in this tube and an elongation of said series is pre-vented. The tube has suitably an oval cross-section at least at its outlet opening so that the series of slide fastener links cannot rotate.
According to a preferred feature of the invention, the series of sllde fastener links is unwound from a-supply roll and a tension regulator for the series of slide fastener links is provided and controls the speed of the motor for driving the supply roll. Because the series of slide faste-ner links is uniformly supplied and together with the complete-ly woven slide fastener is withdrawn by the take-off rollers of the weaving machine, an excessive elongation of the series of slide fastener links is precluded. Such excessive elongation could adversely affect the pitch. Because the tube is stationary and the series of slide fastener links is not deflected, ad-ditional mass forces due to moving parts are avoided so that the~machine can be operated at a higher speed.
The slide fastener which has been joined to the strap by weaving is characterized according to the invention in that the-turns of the series of slide fastener links are tied by crossing and parallel ~ustaposed warp threads, the warp threads lying on the series of slide fastener links are held together by an upper filling thread which has been inserted transversly to the series of slide fastener links, and the warp threads which join the series of slide fastener links are joined to the strap by filling threads inserted be-low the series of slide fastener links. A strip; formed by se-~,`'~ ' ' , 1~36341 parate warp threads may be ~oined by weaving to the upper side of the series of slide fastener links. An additional woven strip may be ~oined by weaving to the underside of the series of slide fastener links. The upper filling thread may also extend through the backing woven fabric which forms the strap.
The uniform convoluted shape of the several links of the series of slide fastener links ensures that the slide fastener is not only stable and will not break open but also that it is pleasant in appearance. Any desired number of warp threads may be used to tie the series of slide fastener links, de-pending on the desired width of the straps.
Embodiments of the invention will be des-cribed hereinafter by way of example with reference to the drawing in which Fig. 1 is a diagrammatic top plan view showing the warp threads warped on the weaving machine and the series of slide fastener links extending in the zero plane, Fig. 2 is a sectional view taken on line I-I in Fig. 1, Fig. 3 is a diagrammatic view showing the woven fabric with open sheds, Fig. 4 is a diagrammatic view showing the -~ tension regulator for-the series of slide fastener links~
Fig. S is a diagrammatic sectional view showing a portion of a slide fastener and strips disposed on both sides of the series of slide fastener links and ~oined - thereto by weaving, and Fig. 6 shows another embodiment of the slide fastener according to the invention.
:
. . . -:,. ;
103~;341 Fig. 1 is a diagrammatic top plan vi~w of the joining warp threads 2-7 (only three of these threads being seen because the other three lie directly behind the~, see Fig. 2) and the warp threads 8 of the backing woven fabric, which are warped in a weaving machine (not shown in detail), and a row of slide fastener links disposed in the zero plane O-O ¢
(Fig. 2). The joining warp threads 2, 3, 4, and 5, 6, 7 are warped on both sides of the zero plane 0-0 and are spaced before the coupling surfaces 20 of the row 1 of slide fastener links. The warp threads 8 of the backing woven fabric are warped below the zero plane 0-0 and below the row 1 of slide fastener links. As is shown, these warp threads 8 may be arranged in two parallel planes. The number of warp threads in each group is selected in dependence on the slide fastener to be made. The row of fastener elements is supported in the zero plane 0-0 and remains in this plane as it is fed along a straight line 100-100 during weaving. F
Fig. 1 shows also the heddle frames used to form the sheds and the front reed, which beats up the woven fabric f' when the filling threads have been inserted. The picking heddles, not shown, move simultaneously and one under the other approximately along the curved paths 11, 12. Respective i;
tuck needles 14, 13 are provided behind the warp threads. The ~ -upper filling threads 19 and the lower filling thread 18 are t inserted in the direction of the arrows 16, 17 indicated in Fig. 2.
Additional warp threads 15 mày be warped above the series of slide fastener links and be used to form an upper cover strip.
The weaving method will now be explained with j reference to Fig. 3. Heddle frames 10 (not shown in detail) are operated to form the joining warp threads 2, 3, 4 and 5, 6, 7 into a shed 21. The zero plane 0-0 lies in the plane of symmetry of said shed. The warp threads of the backing .~ .
': ~
~oven fabric are formed into the shed 22 disposed below the zero plane. Above the zero plane, the warp threads 15 for the woven cover strip form a shed 23. The two fllling threads 18, 19 are $nserted into the opened sheds above and below the zero plane 0-0~ respectively. In this manner the slide fastener is woven which is shown on the left in Fig. 3 and comprises a cover strip lying on the series of slide fastener links.
me sheds 22 and 23 should not intersect the zero plane in order to ensure that the series 1 of slide fastener links is not moved out of the zero plane.
The selvages are formed in known manner. m is need not be described in detail.
Fi8. 4 shows diagra = tically the tension regulator for the se~ies of slide fastener links. The series 1 -of slide fastener links is unwound fr~m the supply roll 24, which is wound on the core 25, which is driven in the unwinding direction by the motor 26. The latter is controlled by a dancer roll 29~ which is hung in a loop of the series 1 of slide fastener links. To form the loop~ the series of slide fastener links is trained around guide rollers 27~ 28~ to effect the regulation the dancer roller 29 moves up and down between the switches 30 and 31, which when actuated deliver to the motor 26 a signal for an increase or decrease in speed. The series 1 of slide fastener links is guided through the tube 32' to the woven fabric.
Fig. 5 shows one half of a slide fastener in which the series of slide fastener links is embraced in V-shape by cover strips 32 and 33. For this purpose, the filling thread 19 is inserted through the warp threads 15 and 8 and the filling thread 18 is inserted through the warp threads 34.
:
In the one-half portlon of a slide fastener shown in `~ Eig. 6, the warp threads lS and 34 for the cover strips 32 and 33 are omitted so that the series 1 of sllde fastener links is joined by the ~oining warp threads 2, 3, 4 and 5, 6, 7 to the strap 35 comprising the warp threads 8.
_9_ ' ~'~ :' '
Series of slide fastener ].inks made from a synthetic thermoplastic monofilament and intended for use in the slide fasteners according to the invention are known in the form of flattened helical springs or meanders bent in U-shape having individual turns or links provided with coupling surfaces. Such helical series of slide fastener links may be sewed to a strap by means of a sewing machine, in which the needle penetrates between the turns and the needle thread is tied by a looper thread. The resulting loop is forwarded to the next turn in that the helix is advanced by one turn.
The sewing machine needle then penetrates the next turn and the cycle of operation is continual~y repeated. The connection :
; 20 of helical slide fastener links to a strap by a sewing machine ~, is a time-consuming operation, and pitch errors cannot be `~ reliably precluded in that known method.
Known weaving methods for making slide fasteners ; . , are faster and more efficient. A weaving method of making slide fasteners is known in which the slide fastener helix is first extended in the form of a straight-line monofilament as a filling thread between warp threads. The helix as such is L
:: i - 1 - .~b~
'~
~i `- - . -103~;341 formed only during the weavlng operation and i9 fixed in and held by the warp threads. That weaving method has the disad-vantage that the helix is fixed only during the weaving operation by the warp threads. A thermal aftertreatment is usually required to fix the helix. The helix as such is not sufficiently fixed in the warp threads so that the precision and stability of the slide fastener may be adversely affected to a high degree.
In a known method (Handley) of the kind defined first hereinbefore, a helical series of slide fastener links is supplied through a tube, which serves as a warp thread and participates in the formation of a shed. As the shed is formed, the tube is pivotally moved downwardly and upwardly through the zero plane so that the filling threads which are entered slip off the tube and enter between the turns. T~e helix disposed in the tube is advanced by a gear in steps corresponding to the pitch thereof. Because during the for-mation of the shed the outlet opening of the tube departs from the zero plane and part of the helix is thus pulled or moved out of the tube, it is not possible always to define exactly that turn into which the filling is inserted. For this reason in that known method different numbers of filling threads may enter each turn even i~ a plurality of shots are inserted.
This is due to the fact that from the aspect of weaving tech-nology the helix constitutes a warp thread on which the fil-ling threads which have been inserted cannot slide because they are located in the turns. For this reason the known weaving method results in irregularly located slide fasteners, which may also have pitch defects. Because only one needle in used in the known weaving method, the filling threads are .,;, , .
~ ,~ ' ' ' ' ' . .
. .
- 10363~1 pulled lnto those arcs of the turn# of the series of sllde fastener links whlch are opposite to the coupling surfaces so that these arcs are filled by the woven fabric. As a re-sult, when the complete slide fastener has been woven the slider slides on the woven fabric and may destroy the same.
It i5 an ob~ect of the invention to provide a slide fastener in which a helical series of links has been ~oined and fixed to the strap with a highly accurate pitch by means of ~oinin~ threads.
In a method of the kind described first herinbefore this ob~ect i5 accomplished according to the invention in that the helical series of slide fastener links is held in the zero plane and during the weaving is moved along a straight line without forming a shed, that joining warp threads are warped in equal numbers above and below the zero plane so as to be spaced from the series of slide fastener links and disposed before the coupling surfaces thereof, that the warp threads of the woven backing fabric are warped on the other side of the series of slide fastener links below the zero plane, that the ~oining warp threads and the warp threads of the backing woven fabric are formed into separate sheds and two filling threads are simultaneous-ly inserted above and below the zero plane, respectively, in such a manner that the upper filling thread extends only through the joining warp threads and the lower filling thread extends through the ~oining warp threads and the warp threads of the backing woven fabric, and that selvages are formed ; from the warp threads at the respective edges of the woven fabric~ The slide fastener which has been made by the method according to the inventlon is secured to the strap and for .
,:.
.
~a3634l this reason cannot break open. The rear arcs of the series of slide fastener links are free of the woven fabric so that the slider which has been applied can sllde on the helix of plastics material. Since two needles are used to insert the filling, the weaving rate is muchilincreased compared to known methods~because four threads are inserted by each double shot per shed. The ~oining threads disposed before the series of slide fastener links are pulled into the turns of said series by the simultaneously inserted upper and lower filling threads.
According to a preferred feature of the invention, additional warp threads are warped above the series of slide fastener links and form separate sheds, through which the upper filling thread is lnserted. The use of these addi-tional warp threads results in the formation of a narrow cover strip, which is joined by weaving to the upper side of the series of slide fastener links.
Additional warp threads are suitably warp~
ed also below the series of slide fastener links and partici_ pate in the shed formed by the warp threads for the backing woven fabric and are shot through by the lower filling threads As a result, the strap formed by the backing woven fabric is extended below the series of slide fastener links so that the stability and fixation thereof are further improved.
According to a further preferred feature of the invention, the upper filling thread is also inserted through the sheds of the backing woven Fabric so that the woven r fabric embraces the series of slide fastener links in the shape of a wedge or V.
The method according to the invention ~ -may be performed on a conventional weaving machine. According to the invention, a tube ls provlded, which lies in the zero plane and serves to supply the serles of slide fastener llnks.
The series of slide fastener links is guided in a troublefree manner in this tube and an elongation of said series is pre-vented. The tube has suitably an oval cross-section at least at its outlet opening so that the series of slide fastener links cannot rotate.
According to a preferred feature of the invention, the series of sllde fastener links is unwound from a-supply roll and a tension regulator for the series of slide fastener links is provided and controls the speed of the motor for driving the supply roll. Because the series of slide faste-ner links is uniformly supplied and together with the complete-ly woven slide fastener is withdrawn by the take-off rollers of the weaving machine, an excessive elongation of the series of slide fastener links is precluded. Such excessive elongation could adversely affect the pitch. Because the tube is stationary and the series of slide fastener links is not deflected, ad-ditional mass forces due to moving parts are avoided so that the~machine can be operated at a higher speed.
The slide fastener which has been joined to the strap by weaving is characterized according to the invention in that the-turns of the series of slide fastener links are tied by crossing and parallel ~ustaposed warp threads, the warp threads lying on the series of slide fastener links are held together by an upper filling thread which has been inserted transversly to the series of slide fastener links, and the warp threads which join the series of slide fastener links are joined to the strap by filling threads inserted be-low the series of slide fastener links. A strip; formed by se-~,`'~ ' ' , 1~36341 parate warp threads may be ~oined by weaving to the upper side of the series of slide fastener links. An additional woven strip may be ~oined by weaving to the underside of the series of slide fastener links. The upper filling thread may also extend through the backing woven fabric which forms the strap.
The uniform convoluted shape of the several links of the series of slide fastener links ensures that the slide fastener is not only stable and will not break open but also that it is pleasant in appearance. Any desired number of warp threads may be used to tie the series of slide fastener links, de-pending on the desired width of the straps.
Embodiments of the invention will be des-cribed hereinafter by way of example with reference to the drawing in which Fig. 1 is a diagrammatic top plan view showing the warp threads warped on the weaving machine and the series of slide fastener links extending in the zero plane, Fig. 2 is a sectional view taken on line I-I in Fig. 1, Fig. 3 is a diagrammatic view showing the woven fabric with open sheds, Fig. 4 is a diagrammatic view showing the -~ tension regulator for-the series of slide fastener links~
Fig. S is a diagrammatic sectional view showing a portion of a slide fastener and strips disposed on both sides of the series of slide fastener links and ~oined - thereto by weaving, and Fig. 6 shows another embodiment of the slide fastener according to the invention.
:
. . . -:,. ;
103~;341 Fig. 1 is a diagrammatic top plan vi~w of the joining warp threads 2-7 (only three of these threads being seen because the other three lie directly behind the~, see Fig. 2) and the warp threads 8 of the backing woven fabric, which are warped in a weaving machine (not shown in detail), and a row of slide fastener links disposed in the zero plane O-O ¢
(Fig. 2). The joining warp threads 2, 3, 4, and 5, 6, 7 are warped on both sides of the zero plane 0-0 and are spaced before the coupling surfaces 20 of the row 1 of slide fastener links. The warp threads 8 of the backing woven fabric are warped below the zero plane 0-0 and below the row 1 of slide fastener links. As is shown, these warp threads 8 may be arranged in two parallel planes. The number of warp threads in each group is selected in dependence on the slide fastener to be made. The row of fastener elements is supported in the zero plane 0-0 and remains in this plane as it is fed along a straight line 100-100 during weaving. F
Fig. 1 shows also the heddle frames used to form the sheds and the front reed, which beats up the woven fabric f' when the filling threads have been inserted. The picking heddles, not shown, move simultaneously and one under the other approximately along the curved paths 11, 12. Respective i;
tuck needles 14, 13 are provided behind the warp threads. The ~ -upper filling threads 19 and the lower filling thread 18 are t inserted in the direction of the arrows 16, 17 indicated in Fig. 2.
Additional warp threads 15 mày be warped above the series of slide fastener links and be used to form an upper cover strip.
The weaving method will now be explained with j reference to Fig. 3. Heddle frames 10 (not shown in detail) are operated to form the joining warp threads 2, 3, 4 and 5, 6, 7 into a shed 21. The zero plane 0-0 lies in the plane of symmetry of said shed. The warp threads of the backing .~ .
': ~
~oven fabric are formed into the shed 22 disposed below the zero plane. Above the zero plane, the warp threads 15 for the woven cover strip form a shed 23. The two fllling threads 18, 19 are $nserted into the opened sheds above and below the zero plane 0-0~ respectively. In this manner the slide fastener is woven which is shown on the left in Fig. 3 and comprises a cover strip lying on the series of slide fastener links.
me sheds 22 and 23 should not intersect the zero plane in order to ensure that the series 1 of slide fastener links is not moved out of the zero plane.
The selvages are formed in known manner. m is need not be described in detail.
Fi8. 4 shows diagra = tically the tension regulator for the se~ies of slide fastener links. The series 1 -of slide fastener links is unwound fr~m the supply roll 24, which is wound on the core 25, which is driven in the unwinding direction by the motor 26. The latter is controlled by a dancer roll 29~ which is hung in a loop of the series 1 of slide fastener links. To form the loop~ the series of slide fastener links is trained around guide rollers 27~ 28~ to effect the regulation the dancer roller 29 moves up and down between the switches 30 and 31, which when actuated deliver to the motor 26 a signal for an increase or decrease in speed. The series 1 of slide fastener links is guided through the tube 32' to the woven fabric.
Fig. 5 shows one half of a slide fastener in which the series of slide fastener links is embraced in V-shape by cover strips 32 and 33. For this purpose, the filling thread 19 is inserted through the warp threads 15 and 8 and the filling thread 18 is inserted through the warp threads 34.
:
In the one-half portlon of a slide fastener shown in `~ Eig. 6, the warp threads lS and 34 for the cover strips 32 and 33 are omitted so that the series 1 of sllde fastener links is joined by the ~oining warp threads 2, 3, 4 and 5, 6, 7 to the strap 35 comprising the warp threads 8.
_9_ ' ~'~ :' '
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In the construction of a slide fastener a method of making a stringer in which a helical row of slide fastener elements is woven into a supporting tape whilst being fed parall-el to warp threads for forming said supporting tape, and compris-ing the steps of guiding said row of slide fastener elements in a plane along a straight line, warping joining warp threads in equal numbers above and below said plane at one side of said row, warping said first-mentioned warp threads of said supporting tape beneath said plane at the other side of said row, forming separate sheds from the first-mentioned and joining warp threads respectively, picking two weft threads for said supporting tape through said sheds both above and below said plane in such a manner that the two weft threads above said plane pass at least through said sheds formed by said joining warp threads whilst the two weft threads below said plane pass through said sheds formed by said joining warp threads as well as those formed by said first-mentioned warp threads of said supporting tape, and pulling said joining warp threads from said one side of said row into the convolutions of the helical row by means of said weft threads.
2. A method according to claim 1, wherein additional warp threads are warped above the series of slide fastener links and form a separate shed, through which the upper warp thread is inserted.
3. A method according to claim 2, wherein additional warp threads are warped below the series of slide fastener links and participate in the shed formed by the said first-mentioned warp threads and are picked by the lower weft threads.
4. A method according to claim 1, 2 or 3, wherein the upper weft thread is also inserted through the sheds of the said first-mentioned warp threads.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732365285 DE2365285A1 (en) | 1973-12-31 | 1973-12-31 | WOVEN ZIPPER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1036341A true CA1036341A (en) | 1978-08-15 |
Family
ID=5902296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA215,968A Expired CA1036341A (en) | 1973-12-31 | 1974-12-13 | Slide fastener |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5097443A (en) |
| BE (1) | BE823581A (en) |
| CA (1) | CA1036341A (en) |
| CH (1) | CH593647A5 (en) |
| DE (1) | DE2365285A1 (en) |
| DK (1) | DK676774A (en) |
| FR (1) | FR2271783B1 (en) |
| GB (1) | GB1483125A (en) |
| IT (1) | IT1028103B (en) |
| NL (1) | NL7416996A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1134054B (en) * | 1980-10-27 | 1986-07-24 | Brev Motta Di Ing Carmelo Mott | FABRIC TAPE FOR WOVEN ZIPPERS |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4832227A (en) * | 1971-09-02 | 1973-04-27 |
-
1973
- 1973-12-31 DE DE19732365285 patent/DE2365285A1/en active Pending
-
1974
- 1974-12-13 CA CA215,968A patent/CA1036341A/en not_active Expired
- 1974-12-16 CH CH1670074A patent/CH593647A5/xx not_active IP Right Cessation
- 1974-12-19 BE BE151703A patent/BE823581A/en unknown
- 1974-12-23 GB GB5557874A patent/GB1483125A/en not_active Expired
- 1974-12-23 DK DK676774A patent/DK676774A/da unknown
- 1974-12-26 JP JP203975A patent/JPS5097443A/ja active Pending
- 1974-12-30 NL NL7416996A patent/NL7416996A/en not_active Application Discontinuation
- 1974-12-30 FR FR7443227A patent/FR2271783B1/fr not_active Expired
- 1974-12-30 IT IT3109074A patent/IT1028103B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2365285A1 (en) | 1975-10-16 |
| BE823581A (en) | 1975-04-16 |
| NL7416996A (en) | 1975-07-02 |
| CH593647A5 (en) | 1977-12-15 |
| FR2271783A1 (en) | 1975-12-19 |
| DK676774A (en) | 1975-08-25 |
| FR2271783B1 (en) | 1978-10-13 |
| GB1483125A (en) | 1977-08-17 |
| JPS5097443A (en) | 1975-08-02 |
| IT1028103B (en) | 1979-01-30 |
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