US3791417A - Method and apparatus for production of a zipper by weaving - Google Patents

Method and apparatus for production of a zipper by weaving Download PDF

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Publication number
US3791417A
US3791417A US00142633A US3791417DA US3791417A US 3791417 A US3791417 A US 3791417A US 00142633 A US00142633 A US 00142633A US 3791417D A US3791417D A US 3791417DA US 3791417 A US3791417 A US 3791417A
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United States
Prior art keywords
forming
weaving
loop
mandrel
link elements
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Expired - Lifetime
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US00142633A
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English (en)
Inventor
F Glindmeyer
W Hennenberg
K Limpens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
William Prym Werke GmbH and Co KG
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William Prym Werke GmbH and Co KG
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Priority claimed from DE19702023005 external-priority patent/DE2023005C/de
Application filed by William Prym Werke GmbH and Co KG filed Critical William Prym Werke GmbH and Co KG
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    • 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

Definitions

  • a continuous profile tape of synthetic material is turned around about a mandrel forming a loop and is bound up in the tape web, which comprises the steps of guiding back and forth the member-forming profile tape as a warp thread shed forming through the web plane, feeding thereby in a cycle continuously the profile cord about said loop-forming mandrel and binding it up by at least one weft thread.
  • the present invention relates at first to a method of production of a slide fastener by weaving, whereby within the range of the weaving station for the formation of a series of link elements a continuous profile tape of synthetic material is bent over about a loopforming mandrel and is tied off in the woven tape. Furthermore, the present invention relates to an apparatus for the production of a slide fastener within the context of a weaving process with a series of link elements formed from a continuoussectional strand, in which series of link elements a loop-forming mandrel is provided within the range of the weaving station.
  • helical spring-like coils are formed in a sectional strand of synthetic material around a loop-forming mandrel such, that the sectional strand plastic material is wound to and fro as a weft thread and thereby tying it on to the warp threads of the slide fastener woven simultaneously thereby.
  • a particular weft thread required in the form of a sectional strand of plastic material is required for the formation of the series of link elements.
  • Such durable-weft weaving process permits only very slow working speeds.
  • the sectional strand of plastic material, now operating as a warp thread permits very high working speeds It is another object of the present invention to produring the weaving operation of the entire slide fastener.
  • the sectional strand is placed in a thread supply container of any selectively large storage capacity, so that an interruption of the weaving operation due to emptying of the container is no longer likely to arise in practice. Furthermore, no additional measures are required in order on the one hand to obtain an exact shape in the rows of link elements and on the other hand properly tying of each of the link elements by the weft thread at the desired point along the woven carrier tape.
  • the row of link elements is already secured in the required coiled form without requiring further operations. Also the weaving process is disposed very simply, since a simple one-ply weave thus a single weaving plane suffices in order to produce the row of link elements and for the tying. off to be accomplished in a proper manner.
  • the shed-forming movement of the sectional strand takes place by the strands being wound upwardly and downwardly, through the plane of weave, this plane being fixed by the line along which picking takes place and the beat-upline of the reed.
  • the warp thread forming the link elements can be passed through by means of known thread guides through this plane of weave to perform its shed-forming movement, whereby these thread guides can spread the linking elements forming warp thread for the passage of the weft thread into a top shed or a bottom shed or a top-bottom shed.
  • the fixing end of the mandrel In order to simplify the winding around movement of the member-forming warp thread around the loop-forming mandrel, one can impart to the fixing end of the mandrel a movement, which is opposite to the above-mentioned movement of the warp thread, constituting the slide elements however, even here without crossing the plane of weave.
  • the non-fixed end of the loop-forming mandrel is disposed thus in one of the two web-shed part ranges or grooves, namely either above the plane of weave or below the plane of weave, so that the warp thread forming the link elements is passed around in one of the two web-shaped part ranges or grooves about the member forming warp thread.
  • the warp thread forming the link members performs its weave stroke movements always on the side pointing toward the carrier tape part of the loop-forming mandrel and is brought only for a short time period during moving around the loop-forming web'to the opposite side.
  • the winding about of the member forming warp thread around the mandrel can take place each time, in accordance with the distance between two consecutive link elements when this warp thread enters the shed where the non-fixed end of the loop-forming mandrel is disposed. This could take place at each second picking action, which leads to slide fasteners of light weight qualities. For heavier qualities it is advisable to wind the warp thread forming the link elements around between successive entrance loops a plurality of picking movements around the warp thread forming the link elements, whereby with constant pull-off action on the fabric a greater distance between the successively formed linking elements is created. To tie in or cover the elements in a firmer manner of the members, it is desirable to tie off additional warp threads in the known manner near the rear portions of the turns constituting the warp members that form the link elements.
  • the feed means is combined with above-mentioned device, so that the rate of feed is precisely matched to the successions of deformed portions in the cross-section, and these two stops are also car-' ried out in rhythm with the weaving process.
  • the present invention is also directed towards equip- I ment for manufacturing of the initially-mentioned slide fastener.
  • This equipment is characterized in that the loop-forming mandrel is accommodated in a holder containing a hole through which the warp thread, forming the link members, passes is guided in a thread guide actuated in rhythm in the weaving process.
  • the warp thread constituting the link members is passed through the opening in the mandrel holding means, so that, after passing completely around of the mandrel end, mounted in the holding means, it returns to its original position. In doing this, the warp thread will have circled the mandrel in the mandrel holder.
  • the fixing end of the loop-forming mandrel is arranged between the guide means for the warp threads and the tie-off point where the weft is picked and beaten up.
  • the warp thread forming the link elements is passed through the opening solely by the guide means that cause its weave-lift movement.
  • the mandrel holder and the opening therein can be of various forms, each of which has a special advantage.
  • the mandrel holder prefferably be constituted by a bearing bush and an insert which accommodates the loop-forming mandrel in the bush, there being a radial gap between the bush and the insert and this gap alone constituting the opening through which the warp thread, forming the link elements, passes.
  • the insert could consist of a sphere, in which is let the end of the mandrel and which is surrounded by a dished member, there being a radial gap between said member and the sphere, so that the warp thread constituting the link elements can pass through the gap between the sphere and the dished member.
  • a rotatable member which accommodates the fixing end of the loop-forming mandrel, and which has an off-center opening for the warp thread forming the link elements.
  • This warp thread passes through a slot in the bearing into this off-center opening in the rotatable member, by which the warp thread is passed around the loop-forming mandrel, when the rotatable member rotates.
  • this rotary movement of the rotatable member is produced by entry movement of the warp thread itself, since the rotating member takes the form of a gyrating mass.
  • the loop-forming mandrel Since the ,winding of the warp thread forming the link elements around the loop-forming mandrel is first carried out near the mandrel holder which, as already mentioned, is arranged between the thread guide means, on the one hand, and the tie-off point on the other, is thus located at 'a distance from the tie-off point. It is of importance, that the loop produced should be allowed to run to the tie-off point.
  • it is advantageous for the loop-forming mandrel not to extend rectilinearly from its anchored portion, but for it to be deflected. This deflection can be from the horizontal weaving plane or relative to the longitudinal direction of the warp thread, but expediently the deflection is effected in relation to both of these reference factors. In the simplest case deflection is achieved by imparting a permanent bend to the loopforming mandrel near its fixing end.
  • FIG. 1 is a side elevation of the part most important for the understanding of the present invention of a weaving device in a schematic showing;
  • FIG. 2a as well as FIG. 3a, are slightly enlarged side elevations of the loom within the range of the tie-in point in two different working positions;
  • FIGS. 2b and 3b are corresponding top plan views of the fabric and the individual threads creating the latter within the range near the tie-in point for the two previously-mentioned working positions;
  • FIG. 4 is a cross-section through a component of the loom designed in accordance with the present invention, with a working path followed by the warp thread that forms the link elements;
  • FIG. 5 is a longitudinal section through the components in FIG. 4 along the section lines V V of FIG. 4.
  • a continuously woven-in weft thread 12 in addition to the required number of warp threads 11, is used for producing the carrier tape portion 25.
  • a continuously woven-in weft thread 12 in addition to the required number of warp threads 11, is used for producing the carrier tape portion 25.
  • a warp-thread from which the elements are formed and which consists of an initially extended strand of plastics material. Near the tie-in point, this strand is passed round a loop-forming mandrel 16, in the manner to be described below, for the purpose of forming helical turns.
  • a pick inserting needle 17 which can be seen in cross-section in FIG. 1, is used as a means for inserting the weft thread 12.
  • the weft thread 12 is inserted in the shed as a loop 34 comprising a doubled thread portion.
  • the warp threads 11 for the tape, as well as the warp thread 15 also referred to as a sectional warp strand or a profile warp strand, constituting the link elements, are spread apart to form a shed 18 to enable the weft thread to pass through.
  • the warp threads 11 forming the tape are moved alternately into a top shed 19 and a bottom shed 20, the movements being relative to the plane of weave WE which is defined by the line of movement of the pickinserting needle 17 and the beat-up point of the reed 30 and is indicated in FIGS. 1, 2a and 3a by a dash-and-dot line, while at the same time, the warp thread 15 constituting the link elements is selectively located either in the top shed 19' as in FIG. 2a, or in the bottom shed 20' as in FIG. 3a.
  • healds 21, 22 and 23 are used as thread guide means for forming the shed 18.
  • the number of healds will depend upon the type of fabric binding required.
  • heald control means are of the usual design and are therefore not illustrated.
  • the various warp threads 11 are drawn into the heddles 24 of the healds, which in the present case are represented by the two healds 22 and 23.
  • the warp thread 15 forming the link elements is drawn in a further heald 21.
  • the holder 32 is rigidly secured to a carrier 46 of the loom.
  • the outer part of this holder 32 namely a bearing bush 38 later still to be described, carries a flange 48 on one side (FIG. 4) which is secured by several screws 47 on a carrier 46, the holder 32 is thereby secured in a position, with which it projects into the movement path of the memberforming warp thread 15, if the latter performs the spreading movement to be discussed later closely in connection with FIG. 4 based on the to and pro movement of its shaft 21.
  • the warp thread reaches thereby the two extreme positions 15' and 15" shown in FIG. 4.
  • the warp threads 11 of the tape are drawn from a thread supply container (not shown) and are guided round a warp thread reversing rod 26 to the healds 22 and 23.
  • the container for supplying the warp threads 15 forming the link elements is not shown either. Also the container for supplying the warp threads 15 is not shown.
  • This warp thread is guided over a reversing roller 27 and passed through a feed device 28 which advances the thread in a stepwise manner in rhythm with the weaving process.
  • the feed device consists of two rollers, the drive for which is not particularly shown, because of conventional nature.
  • the healds 21, 22 and 23 execute an up and down movement 29 in the directions indicated by the double-headed arrow shown in FIG. 1.
  • the beat-up reed 30 Located in front of the healds is the beat-up reed 30 through which the warp threads 11 are drawn and which performs the function of beating up the weft thread 12 after each pickdnserting action on the already formed piece of fabric.
  • the loop forming mandrel 16 is permanently located above the plane of weave WE and near the warp threads located in the top shed 19, and 19'.
  • the loopforming mandrel 16 does not participate in the up and down movement of the warp threads and therefore does-not alter its .position in relation to the plane of weave WE.
  • the rear fixing end of the mandrel is mounted in a holder disposed between the beat-up reed 30 and the healds 21.
  • the fixed means used in the present case for attaching the holder 32 to a carrier on the loom is not particularly shown.
  • loop-forming mandrel 16 comprises a bend at the beat-up point of the reed 30 and downwards from this bend of the mandrel extends over a distance into the fabric before terminating at its run-off end 33 as shown in FIG. 1 of the drawings.
  • FIGS. 1, 2b and 3b show that the loop-forming mandrel 16 is deflected relatively to both the plane of weave WE and the direction 11 in which the warp threads run.
  • the warp thread forming the link elements is positioned in its top shed 19'.
  • this warp thread 15 is positioned only on that side of the loop-forming mandrel 16 presented to the carrier tape portion 25.
  • all .the other warp threads 11 for forming the tape have been spread into two groups 11' and 11" for the formation of a bottom shed and an upper shed 19, respectively.
  • the complete shed 18 is thus formed and the pickinserting needle 17 whereby the weft thread 12 is inserted as the loop 34 is then passed through this shed 18.
  • the pick-inserting needle 17 continuously passes the particular loop 34 of weft thread in the shed from the marginal zone of the fastener strip 10, which zone is provided with the later row 14 of link elements.
  • a meshing loop 36 which is drawn through the loop created by the preceding pick-insertion action, is laid on the opposite edge of the fabric at the point 35, where the weft thread 12 is reversed, so that a row of meshes, formed from meshing loops drawn continuously, one into the other, is created at this point 35.
  • the warp thread 15 forming the link elements is raised during its lifting movement in the top shed 19', to a somewhat higher level than that corresponding to the top shed 19 of the warp threads 11 forming the tape and to the inclined position of the loop-forming mandrel 16.
  • the warp thread 15 forming the link elements moves into working connection with the mandrel holder 32. The mode in which this operation takes place is explained in more detail by reference to FIGS. 4 and 5.
  • the holder is made in two parts and consists of a bearing disc 32, supporting the fixing end- 31 of the mandrel l6 and of a bearing sleeve 38 which surrounds the disc 37, rotatable therein, and which in the present case is securely fitted to a carrier in the loom.
  • the hearing sleeve 38 has an inlet slot 39 as can be ascertained from the cross-sectional view of FIG. 4.
  • the bearing disc 37 contains an opening 40.
  • the opening 40 and the slot 39 are arranged at first in register with the path of moving of the warp thread 15,constituting the link elements, when this thread, during its initially rectilinear lifting movement, shown in FIG. 4, executes its entry movement 41 in the direction of the arrow shown on the drawing.
  • the warp thread 15 passes into the opening 40 before reaching the upper point of reversal of its weave lifting movement.
  • the incoming movement 41 of the warp thread 15 strikes the inlet side 42 of the disc 37 and causes the rotation of the disc 37.
  • the further movement of the rotating disc 37 takes place by its own inertial power.
  • the thread is now caught in the opening 40, upon further movement of the disc 37 due to its inertia in the bearing sleeve 38.
  • the warp thread 15, constituting the link elements is disposed within the range of the rotating disc for a sufficiently long time.
  • the inertia power of the disc 37 takes the thread and moves the latter in the direction of the arrow 43 according to the point-dotted line in FIG.
  • the path of the warp thread, forming the link elements, in relation to the opening 40 is indicated in FIG. 5 by a dash-and-dot line representing the axis 15' of the thread.
  • the thread 15 strikes the inlet side 42 of the bearing disc and sets it in rotation in direction of the arrow 43.
  • the bearing disc 37 is thus caused to swing and its opening 40 is turned into the bearing sleeve 38 and forms an orifice for the passage therethrough of the weftthreads, constituting the link elements, between the bearing disc 37 and the bearing sleeve 38, which revolves about the loop-forming mandrel 16.
  • FIGS. 3a and 3b show the next stage of the method when the next loop 34' of weft thread is being inserted.
  • the distribution of the warp threads 11 in the top shed 19 and the bottom shed 20 is different from that occurring in the preceding stage of the method; other warp threads of the tape are now located in the two groups 11' and 11" of thread forming the top shed and the bottom shed.
  • the loop-forming mandrel 16 however is still located on the same side of the plane of weave WE; furthermore, in the present case, it has not been moved out of the position already shown in FIG. 2a.
  • the warp thread 15, forming the slide elements has however, moved into the bottom shed 20', which is determined by the lower reversal point between the movements 44 and 41 shown in FIG. 4.
  • the pick-inserting needle 17,.now entering the opened complete shed 18 crosses over the warp thread 15, constituting the link elements and this thread, again lying between the mandrel 16 and the tape fabric 25, is thus tied on to the fabric of the carrier tape.
  • Theloop-forming mandrel 16 does not interact with the warp thread 15, constituting the link elements, in this stage of operation.
  • the meshing loop 36' created on the weft thread is looped up with the preceding one, so that a further mesh is created at the edge zone.
  • the operational cycle of the present method is thereby completed and the stage illustrated in FIGS. 2a and 2b is repeated.
  • the weaving process for producing a slide fastener strip could also comprise more than two stages.
  • one turn 45 is formed for each second weft and thus a link element is formed.
  • a slide member which can be reciprocated by means of a simple control device such as an eccentric and which normally closes the slot 39 in the bearing sleeve 38 and only uncovers it when it is desired to place a turn of thread around the mandrel 16.
  • a simple control device such as an eccentric
  • a locking rod which permitted free rotation of the bearing disc only at the required moments.
  • a gear could also be provided for the rotation of the bearing disc in the bearing sleeve, this gear being set in movement at the required moment.
  • Two slide fastener strips, later joined to form a complete fastener are advantageously produced alongside each other in the loom.
  • the two strips are expediently woven in mirror-image fashion, sideby-side in the same loom, and with their rows of link elements facing each other.
  • the two slide fastener strips are best joined, while still in the loom, after weaving has been completed, while they are still subjected to the pull-off tension. In this way, and if the pull-of tension is relaxed on both strips simultaneously, any irregularities in the slide fastener strips largely cancel each other out, since the two strips contract in a manner whereby they become matched up to each other.
  • shaping rolls which cause a change in crosssection in the warp thread 15, constituting the link elements, could be associated with the feed device 23.
  • the turning points, facing the carrier strip portion 25, as well as the link surfaces, moving into a position on the opposite side of the mandrel, can be predetermined before the actual turns are formed.
  • Turns having an elliptical cross-section are obtained, and this cross-section enables the shanks of the link elements, contiguous with the link faces, to extend in the forward part of the turn horizontally and to be superposed upon each other in the vertical direction, and this form of cross-section further enables the pitch of the helix to be virtually limited to the rearward portions of the turns whereby the row 14 of link elements is woven into the carrier tape.
  • the warp threads near the warp thread 15 that constitutes the elements are made thicker than the other warp threads so as to achieve a firmer bond, or they may be provided in a greater number so that a ridge-like thickening is imparted to the weave at this position.
  • a method of manufacturing a slide fastener by weaving in which method a sectional warp strand of plastics material is deflected about a loop-forming mandrel within the range of a striking point of the weft of a complementary carrier tape portion for forming a row of link elements, comprising the steps of passing the sectional strand to and fro through a plane of weave as a warp thread, said plane of weave being defined by a line along which picking takes place,
  • sectional strand being tied off by means of a weft thread and woven into the simultaneously created carrier tape portion.
  • An apparatus for manufacturing a slide fastener by weaving comprising a loop forming mandrel for the formation of a row of coupling members from a profile strand of synthetic material,
  • an upwardly and downwardly moving heald having an eye through which said profile strand extends and is carried through a shedding'motion a laterally reciprocating pick-insertion means for a weft thread for weaving a stringer web, and for weaving in a row of link elements wound about the forward end of a loop-forming mandrel,
  • said holder including an element comprising a bearing disc carrying the rear end of said mandrel and a bearing sleeve surrounding said bearing disc,
  • bearing sleeve being provided with at least one passage slot aligned with the path of movement of said profile strand of synthetic material and said 9.
  • bearing disc being provided with an opening, said slot and said opening receiving said profile strand during formation of said link elements about said the weavmg Processmandrel.
  • said disc is connected to a drive actuable in rhythm

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  • Slide Fasteners (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
US00142633A 1970-05-12 1971-05-12 Method and apparatus for production of a zipper by weaving Expired - Lifetime US3791417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702023005 DE2023005C (de) 1970-05-12 Verfahren und Vorrichtung zum Herstellen eines Reißverschlusses durch Weben

Publications (1)

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US3791417A true US3791417A (en) 1974-02-12

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US00142633A Expired - Lifetime US3791417A (en) 1970-05-12 1971-05-12 Method and apparatus for production of a zipper by weaving

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US (1) US3791417A (enrdf_load_stackoverflow)
JP (1) JPS5710217B1 (enrdf_load_stackoverflow)
AT (1) AT308665B (enrdf_load_stackoverflow)
CA (1) CA964164A (enrdf_load_stackoverflow)
CH (1) CH524336A (enrdf_load_stackoverflow)
DK (1) DK135825C (enrdf_load_stackoverflow)
FI (1) FI52363C (enrdf_load_stackoverflow)
GB (1) GB1341266A (enrdf_load_stackoverflow)
IE (1) IE35216B1 (enrdf_load_stackoverflow)
IL (1) IL36798A (enrdf_load_stackoverflow)
NL (1) NL170362C (enrdf_load_stackoverflow)
NO (1) NO127930B (enrdf_load_stackoverflow)
RO (1) RO81464B (enrdf_load_stackoverflow)
SE (1) SE406092B (enrdf_load_stackoverflow)
ZA (1) ZA713095B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982566A (en) * 1973-06-29 1976-09-28 William Prym-Werke Kg Method and apparatus of making a woven zipper
US3991795A (en) * 1973-03-20 1976-11-16 Textron, Inc. Beadless woven stringer for a spiral slide fastener
US4134184A (en) * 1974-05-14 1979-01-16 Carmelo Motta Woven slide fastener
US4174736A (en) * 1977-11-09 1979-11-20 Yoshida Kogyo K.K. Apparatus for manufacturing a slide fastener stringer having a woven coiled coupling element
US4184518A (en) * 1977-08-27 1980-01-22 Yoshida Kogyo K.K. Apparatus for manufacturing a slide fastener stringer having a woven coiled element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US762584A (en) * 1903-08-20 1904-06-14 Hartley Loop Weave Company Flexible looper for doup-weaving.
US3258034A (en) * 1962-04-26 1966-06-28 Novi Patentverwertungs G M B H Method and apparatus for manufacturing woven sliding clasp fasteners

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1268647A (fr) * 1960-06-25 1961-08-04 Mediterraneenne De Fermetures Procédé de fabrication de fermetures à glissière et produit en résultant
FR1323015A (fr) * 1962-02-23 1963-04-05 Mediterraneenne De Fermetures Perfectionnement aux procédés de fabrication, par tissage, de fermetures à glissière, et fermeture obtenue
US3249126A (en) * 1962-03-08 1966-05-03 Novi Patentverwertungs G M B H Sliding clasp fasteners
US3457965A (en) * 1968-03-21 1969-07-29 Scovill Manufacturing Co Loom for weaving slide fastener stringers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US762584A (en) * 1903-08-20 1904-06-14 Hartley Loop Weave Company Flexible looper for doup-weaving.
US3258034A (en) * 1962-04-26 1966-06-28 Novi Patentverwertungs G M B H Method and apparatus for manufacturing woven sliding clasp fasteners

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991795A (en) * 1973-03-20 1976-11-16 Textron, Inc. Beadless woven stringer for a spiral slide fastener
US3982566A (en) * 1973-06-29 1976-09-28 William Prym-Werke Kg Method and apparatus of making a woven zipper
US4134184A (en) * 1974-05-14 1979-01-16 Carmelo Motta Woven slide fastener
US4184518A (en) * 1977-08-27 1980-01-22 Yoshida Kogyo K.K. Apparatus for manufacturing a slide fastener stringer having a woven coiled element
US4174736A (en) * 1977-11-09 1979-11-20 Yoshida Kogyo K.K. Apparatus for manufacturing a slide fastener stringer having a woven coiled coupling element

Also Published As

Publication number Publication date
RO81464B (ro) 1983-04-30
DE2023005B1 (de) 1971-03-25
RO81464A (ro) 1983-04-29
IL36798A (en) 1974-09-10
NO127930B (enrdf_load_stackoverflow) 1973-09-03
NL170362C (nl) 1982-11-01
SE406092B (sv) 1979-01-22
IE35216L (en) 1971-11-12
NL7106504A (enrdf_load_stackoverflow) 1971-11-16
IE35216B1 (en) 1975-12-10
DK135825B (da) 1977-07-04
CA964164A (en) 1975-03-11
DK135825C (da) 1977-12-05
AT308665B (de) 1973-07-10
IL36798A0 (en) 1971-07-28
FI52363B (enrdf_load_stackoverflow) 1977-05-02
CH524336A (de) 1972-06-30
GB1341266A (en) 1973-12-19
FI52363C (fi) 1977-08-10
NL170362B (nl) 1982-06-01
ZA713095B (en) 1972-05-31
JPS5710217B1 (enrdf_load_stackoverflow) 1982-02-25

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