US2711116A - Double knot netting - Google Patents

Double knot netting Download PDF

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Publication number
US2711116A
US2711116A US318238A US31823852A US2711116A US 2711116 A US2711116 A US 2711116A US 318238 A US318238 A US 318238A US 31823852 A US31823852 A US 31823852A US 2711116 A US2711116 A US 2711116A
Authority
US
United States
Prior art keywords
thread
knot
double
loops
creel
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
Application number
US318238A
Other languages
English (en)
Inventor
Johnson Roland
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.)
Drummondville Cotton Co Ltd
Original Assignee
Drummondville Cotton Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL84208D priority Critical patent/NL84208C/xx
Application filed by Drummondville Cotton Co Ltd filed Critical Drummondville Cotton Co Ltd
Priority to US318238A priority patent/US2711116A/en
Priority to GB2027/53A priority patent/GB726975A/en
Priority to DED14236A priority patent/DE934120C/de
Application granted granted Critical
Publication of US2711116A publication Critical patent/US2711116A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04G—MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR
    • D04G1/00—Making nets by knotting of filamentary material
    • D04G1/02—Making nets by knotting of filamentary material in machines
    • D04G1/08—Making nets by knotting of filamentary material in machines using two series of threads
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/16—Processes or apparatus for producing holograms using Fourier transform
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms

Definitions

  • the present invention relates to the manufacture of nets and more particularly to the making of a double atent moved by the twine tube to a diagonal position across the twisted loops to a position at one side of the hook.
  • the shuttle thread which is located on the shuttle between each pair of creel threads, is then passed by the shuttle up through the twisted loops and while the shuttle is in the top' position the twine tube carrying the creel thread is moved back to the original side of the hook.
  • the shuttle is then passed downwards through the loop to its original position beneath the retaining pin and hook.
  • the rotatable hooks are then rotated back to their original condition untwisting the loop so that the shuttle thread is now looped about one portion of the creel thread and is looped about by two.:full
  • Av plurality of restraining pins are mounted on an elongated bar extending the length of the operative portion of the loom in spaced apart relationship corresponding to the location of the retaining pins and hooks to pass through the looped creel threads in a time related sequence so that the shuttle threads are each alternatively knotted to the two creel threads between which each shuttle operates.
  • the creel threads are fed lengthwise as each knot is formed so that the meshes of the net are formed in the usual manner.
  • the knot uniting the creel threads and shuttle threads may be of a single or a double type of knot well known in the art as a weavers knot.
  • the double weavers knot possesses certain advantages over the single knot in that it is more secure and accordingly is less liable to slippage.
  • the present invention aims to provide an improved method of making a double weavers knot on a netting loom and apparatus by means of which the method may be carried out.
  • the invention is a method of forming a double weavers knot comprising the steps of forming a double loop of a first or creel thread and retaining the ends of the loops on spaced apart retaining points, twisting the double loop to form a loop having two bights while moving the first thread diagonally to one side of one of the retaining points passing the second thread through one bight of the'twisted double loop, moving the first thread to the other side of said retaining point, passing the second thread back down through said bight, untwisting the loop, and progressively restraining the loop while drawing up the first thread and then releasing the loops and tightening the knot.
  • the entire sequence of steps is carried out with both the first thread and second thread under tension and in multiple fashion so that with each knotting step a complete row of meshes is added to the net.
  • the knots are made alternatively right and left handed, with respect to the loom on alternate rows so as to prevent twisting of the net strands.
  • a loom by means of which the present method may be carried out is provided with spaced apart rows of retaining pins and rotatable hooks arranged in opposed relationship.
  • a double knot is made on this loom as follows; the creel thread is fed from supply creels in individual parallel rows to the retaining pins where each strand is wound, by means of a twine tube, in two full loops about a retaining pin and a corresponding hook.
  • the hooks are each then rotated about 180 degrees 'to twist the loops over each other while the feeding portion of the creel thread is and means provided whereby these restraining pins are moved forward and downward while the loops are slipped oif the hooks onto the restraining pins.
  • the bar holding the restraining pins is then caused to move backwards towards the retaining pins while the knots are-drawn up by tension being applied to the creel thread fed through the twine' tubes by a bascule acting on the creel thread between the supply packages and the twine tubes.
  • knots so made are alternated on every row so that each row of the mesh is united by a left-hand or right-hand knot keeping the strands from twisting as the weaving proceeds.
  • Figure 1 is a diagrammatic view showing a portion of a net embodying double weavers knots formed in accordance with the invention.
  • Figure 2 is an enlarged detail view of a double weavers knot formed according to the invention.
  • Figure 3 is a diagrammatic view partially in section showing the preferred arrangement of loom elements for making a double weavers knot according to the invention.
  • Figures 4 through 12 illustrate in step by step sequence the present method of forming a double weavers knot on a netting loom.
  • Figure 13 is an enlarged detail view of the completed knot asit would appear when tightened after the finalstep shown in Figure 12.
  • Figure 1 shows a portion of a net wherein the strands are joined by double weavers knots according to the invention to illustrate in more detail the alternative left and righthand knot uniting the strands in alternaterows.
  • the knotsAinvthe .first row are right-hand while 'the'knot B in the second row is left-hand and the knots C in the third row are again right-hand and so on.
  • the enlarged detail of the partially tied knot in Figure 2 shows a lefthand knot similar to that indicated at B.
  • the netting loom by means of which the present method is carried out is of conventional construction with the exception that there is provided a moving bar containing a plurality of spaced apart restraining pins 12, a portion of the bar and one pin only being shown by way of illustration.
  • the present construction also includes retaining pins 14, rotatable hooks 16, reciprocating shuttles 18, and twine tube feeders which are adapted to supply and feed a creel thread D from supply creels 22.
  • a tensioning bascule 24 is pivotally mounted between the supply creels 22 and the twinetubes 20 so as to be adapted to exert tension on the creel thread D to draw up the knots as will be described in more detail later.
  • This apparatus is utilized to carry out the present method of forming a double weavers knot in the following sequence of operative steps.
  • Figure 4 shows the first step wherein the creel thread D is fed from the preceding knot E along one side of the retaining pin 14 towards the rotatable hook 16 while the shuttle thread G is held on the other side of the retaining pin 14 by the shuttle 18.
  • the shuttle thread G extends from the preceding knot F of the row of meshes.
  • creel thread D is then looped in two full loops about the retainer pin 14 and the rotatable hook 16 by means of the twine tube 20.
  • the looped creel thread D is then twisted over between the retainer pin 14 and the hook 16 by rotating the hook 16 about 180 degrees and at the same time the twine tube 20 carries the feeding end of the creel thread D diagonally across the twisted loops to a position at one side of the hook 16.
  • the shuttle 18 then passes up through the crossed over loops of the creel thread D so as to carry the shuttle thread G through and above the loops.
  • the hook 16 then rotates back to its normal position, about 180 degrees, so that the shuttle thread G is looped about the top strand of the creel thread D and due to the untwisting of the loop by the counter rotation of the hook 16 also passes behind the two outside strands of the creel thread D forming the loops.
  • movable thread retaining pins and rotatable hooks mounted in spaced apart opposed parallel alignment on said frame, movable thread supporting and conveying means adapted to convey single threads about each opposed pair of said spaced apart movable pins and rotatable hooks, a plurality of thread carrying shuttles mounted in spaced apart relationship for reciprocal movement between said opposed rows of pins and hooks, said pins, hooks, thread supporting and conveying means, and shuttles being adapted to move in time related sequence to unite individual threads by knotting therebetween, an
  • -' elongated bar mounted for reciprocal movement in timerelated sequence with the movements of said retaining pins on said frame above and in parallel alignment with said retaining pins and hooks and carrying a plurality ⁇ of downwardly extending restraining pins disposed in spaced-apart alignment corresponding to said retaining pins, whereby said restraining pins are adapted to be interposed between said retaining pins and hooks and moved in from a first position adjacent said hooks to a second position adjacent said retaining pins during the knot forming action of said loom.
  • thread tensioning means adapted to cooperate with said restraining pins.
  • a method of forming a double weavers knot comprising, forming a double loop of a first thread and retaining apart the ends of the loops at two points of retention, twisting the loop to form a twisted double loop having two bights, moving the first thread diagonally to one side of one of said points of retention, passing the second thread through the one bight of saidtwisted double loop adjacent the said one point of retention, moving the first thread to the other side of said one point of retention, passing the second thread back through the same bight of the loop, untwisting the loop and pro-' gressively restrainingthe loop while tightening the first thread, and then releasing the loops from retention and 1 tightening the knot.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Ropes Or Cables (AREA)
  • Looms (AREA)
US318238A 1952-11-01 1952-11-01 Double knot netting Expired - Lifetime US2711116A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL84208D NL84208C (OSRAM) 1952-11-01
US318238A US2711116A (en) 1952-11-01 1952-11-01 Double knot netting
GB2027/53A GB726975A (en) 1952-11-01 1953-01-23 Double knot netting
DED14236A DE934120C (de) 1952-11-01 1953-01-30 Verfahren und Netzknuepfstuhl zur Bildung eines doppelten Netz- oder Weberknotens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US318238A US2711116A (en) 1952-11-01 1952-11-01 Double knot netting

Publications (1)

Publication Number Publication Date
US2711116A true US2711116A (en) 1955-06-21

Family

ID=23237300

Family Applications (1)

Application Number Title Priority Date Filing Date
US318238A Expired - Lifetime US2711116A (en) 1952-11-01 1952-11-01 Double knot netting

Country Status (4)

Country Link
US (1) US2711116A (OSRAM)
DE (1) DE934120C (OSRAM)
GB (1) GB726975A (OSRAM)
NL (1) NL84208C (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158985A (en) * 1975-12-22 1979-06-26 Satron, Inc. Method and apparatus for forming improved nets

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US463115A (en) * 1891-11-10 Machine
US583114A (en) * 1897-05-25 Machine for making nets
US2162115A (en) * 1938-10-31 1939-06-13 Pauls Fish Net Company Netting construction
US2219015A (en) * 1939-08-08 1940-10-22 Nishiguchi Takao Machine for manufacturing fishing nets automatically

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US463115A (en) * 1891-11-10 Machine
US583114A (en) * 1897-05-25 Machine for making nets
US2162115A (en) * 1938-10-31 1939-06-13 Pauls Fish Net Company Netting construction
US2219015A (en) * 1939-08-08 1940-10-22 Nishiguchi Takao Machine for manufacturing fishing nets automatically

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158985A (en) * 1975-12-22 1979-06-26 Satron, Inc. Method and apparatus for forming improved nets

Also Published As

Publication number Publication date
NL84208C (OSRAM)
GB726975A (en) 1955-03-23
DE934120C (de) 1955-10-13

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