US3643497A - Tensile loading apparatus for moving wire - Google Patents

Tensile loading apparatus for moving wire Download PDF

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Publication number
US3643497A
US3643497A US812971A US3643497DA US3643497A US 3643497 A US3643497 A US 3643497A US 812971 A US812971 A US 812971A US 3643497D A US3643497D A US 3643497DA US 3643497 A US3643497 A US 3643497A
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United States
Prior art keywords
pulley
wire
main
groove
guiding
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Expired - Lifetime
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US812971A
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English (en)
Inventor
George W Lecompte
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Raytheon Co
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Hughes Aircraft Co
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables

Definitions

  • testing of long lengths of wire to assure at least a predetermined tensile strength can be performed by running the wire along a path where it is subjected to a predetermined high tension. Such testing is preferably performed in the course of some other handling operation, such as during manufacture when the wire is wound into coils, or during the winding of wire from a supply coil onto an end use product such as a bobbin.
  • the testing tension is generally much higher than the tension which can be applied to a supply coil or other source of wire, or which can be applied to the bobbin or other means for taking up the wire.
  • An object of the present invention is to provide apparatus for facilitating the tensile testing of long lengths of wire or the like.
  • Another object is to provide apparatus for subjecting a continually moving wire to a high tension without subjecting the source of the wire or the means for taking up the wire to high wire tension.
  • apparatus for testing wire or other elongated material which applies a high tension to a small interval of the wire without subjecting the rest of the wire to a high tension.
  • the apparatus includes a main pulley with at least two grooves and a free pulley for leading wire in a loop from one main pulley groove to the other.
  • Guides are included which guide wire to and away from the main pulley to assure a large wire wrap, such as 180, about each main pulley groove before the wire extends to the free pulley.
  • the free pulley is pulled away from the main pulley by a high test force. This results in a wire loop extending from the main pulley around the free pulley being subjected to a high test tension.
  • only a low tension exists in wire initially entering upon and finally leaving the main pulley.
  • a large difference in tension exists without wire slipping on the main pulley grooves because of the large wire wrap, such as 180, about each pulley groove.
  • FIG. l is a perspective view of wire-testing apparatus constructed in accordance with the invention.
  • FIG. 2 is a partial perspective view of wire-testing apparatus constructed in accordance with another embodiment of the invention.
  • FIG. 3 is a partial sectional view taken on the line 3-3 of FIG. 2;
  • FIG. 4 is a front elevation view of wire-testing apparatus constructed in accordance with still another embodiment of the invention.
  • FIG. 5 is a plan view of the apparatus of FllG. 4.
  • FIG. 6 is a partial front elevation view of yet another embodiment of the invention useful for applying bending stresses to wire.
  • FIG. ll illustrates wire-testing apparatus for subjecting a continually moving wire 110 to a testing tension which will break any weak portion of the wire.
  • An example of a situation where such testing may be performed is in the movement of control wire from a large supply coil onto a bobbin that is to be placed in a missile launcher. Such wire trails behind a missile and transmits signals that steer the missile to the target. While previous quality testing has been performed, a final tensile test is considered desirable. A high tensile testing load could be applied to the wire by merely winding it tightly on the bobbin.
  • the wire-testing apparatus of the invention subjects an interval of the moving wire to a high testing ten sion such as 5 pounds, but isolates the rest of the wire from this tension.
  • the testing apparatus comprises a frame 112 with four wheels or pulleys M, llti, llh and 20 thereon. All pulleys are idler pulleys, no motor being required to operate this embodiment of the invention.
  • Pulley lid is the main pulley, which is rotatably mounted on a shaft 22 that is fixed to the frame.
  • Pulley Ed is a free pulley, which is mounted on a shaft 2d. The shaft 2d is held by a mount 26 which is free to move toward and away from the main pulley.
  • a weight 2% urges the free pulley away from the main pulley to subject the wire loop extending between them to a high tensile load.
  • Pulleys M and T6 are guide pulleys for guiding the wire onto and away from the main pulley, and they are rotatably mounted on shafts 30 and 32 that are fixed to the frame.
  • the main pulley has two parallel grooves 34- and 36, while the other pulleys M, 116 and 20 have only single grooves 38, 450 and 42, respectively.
  • the wire extends from the supply coil around the guide pulley lid, then around the first main pulley groove 1%, then around the free pulley 2%, then l80 around the second main pulley groove 36, and then around the guide pulley llh to the bobbin. It may be noted that the axes of rotation of the main and free pulleys lit and 20 are not parallel, since the free pulley must direct wire between the two main pulley grooves.
  • the weight 28 that is attached to the mount places the interval of wire 1101, which extends between the main and free pulleys, under a testing tension.
  • the wire at lldl is under a tension AT which is one-half the force T applied by the weight 28 (plus the weight of the mount and pulley) to the free pulley.
  • the portions of wire extending from the supply coil around the guide pulley M, and up to the main pulley iii are all under the relatively low tension which is used in winding.
  • the portions of wire extending from the main pulley, around the guide pulley 16, and to the bobbin are under a low tension approximately equal to the tension of wire extending around the other guide pulley M.
  • About the only difference in tension in wire entering and leaving the testing apparatus is that difference required to overcome friction of the four pulleys of the wire-testing apparatus, which is very low.
  • F is the wire tension after leaving the pulley (which is 5 pounds in the above example), F is the tension prior to entering on the pulley (which is 0.5 pound in the above example), e is the base for natural logarithms (approximately 2.718), 1.4 is the coefficient of friction between the wire and pulley surface materials, and 9 is the angle of wire wrap around the pulley (about 180, or w radians, in the above example).
  • an effective coefficient of friction of about 0.5 is required to prevent slippage on an ordinary pulley groove of flat or large radius cross section.
  • the above also applies to the wire portions leaving and approaching the second main pulley groove.
  • a large wrap at least on the order of 180 is required to enable the maintenance of an appreciable tension ratio. It should be noted that no appreciable change in wire tension occurs around the free pulley 2%. Accordingly, instead of employing a rotating member as the free pulley means, or free wire engaging means, a slider member can be used. Such a slider member is preferably of low friction, and may be made of materials such as Teflon for light duty applications or of polished synthetic sapphire for long wear.
  • the wire tends to creep over the main pulley grooves 34 and 36 to cause a continual lengthening of the wire loop portion 101 extending from the main pulley to the free pulley 20. This is due to the change in tension around the main pulley grooves which is accompanied by a change in elongation.
  • elongation of the loop portion 10I generally requires that a substantial distance be provided under the weight 28 to allow it to move down, and that the weight be raised and the wire pulled through to reduce the loop after a period of use.
  • FIG. 2 illustrates another embodiment of the invention which enables a large ratio between the testing tension and the tension of the wire both when it is originally received and when it finally leaves the testing apparatus. While a high tension ratio can be maintained without slippage by using a main pulley with soft rubber or the like at the grooves, such materials generally wear rapidly, and the tension ratio is still limited to a moderate level.
  • the apparatus of FIG. 2 enables a high ratio to be employed with pulleys of only moderate coefficient of friction.
  • wire 50 moves around seven pulleys of a wire-testing machine.
  • the pulleys include two guide pulleys 52 and 54 for guiding wire entering and leaving the apparatus, two main pulleys 56 and 58 which receive wire from the guide pulleys, and three free pulleys 60, 62 and 64.
  • the guide pulleys S2 and 54 and main pulleys 56 and 58 are mounted for free rotation on a frame, the frame not shown in order to aid clarity.
  • the main pulleys 56 and 58 are rotatably fixed to a shaft 66 so they rotate together, the shaft 66 being rotatably mounted on the frame.
  • the free pulleys 60, 62 and 64 are rotatably mounted on individual mounts, of the type shown at 26 in FIG. I, to enable movement toward and away from the main pulleys.
  • Biasing means such as weights or springs are coupled to the mounts to pull the free pulleys away from the main pulleys, the biasing means being indicated by arrows 68, 70 and 72 for pulleys 60, 6 and 62, respectively.
  • the wire 50 follows a path from the wire source around guide pulley 52, then 180 around a first main pulley groove 74, then around free pulley 60, and then 180 around a second main pulley groove 76.
  • the wire then continues around primary free pulley 62, then 180 around third main pulley groove 78, then around free pulley 64, then 180 around fourth main pulley groove 80, and then around the guide pulley 54 to the wire receiving means.
  • the free pulleys 60 and 64 are intermediate free pulleys which are used to step up or step down the wire tension to a level in between the lowest tension existing at the guide pulleys 52 and 54 and the highest tension ex isting at the primary free pulley 62.
  • the wire portions 50L and 50M at the guide pulleys 52 and 54 are at a low tension, such as 0.5 pound.
  • the wire portions SON and 50? at the intermediate free pulleys 60 and 64 are at an intermediate tension, such as 1.5 pounds, which may be applied by employing weights at 68 and 70 of 3 pounds each.
  • the wire portion 500 at the primary free pulley is under the test tension, such as 5 pounds, which may be realized by applying a weight at 72 of pounds.
  • wire creep occurs over the main pulleys 58 and 56, which tends to increase the length of the wire loop portion 500 that extends to the primary free pulley 62.
  • creep can also be a tendency for creep to occur in the wire portions 50N and 50? which extend around the intermediate free pulleys. If the intermediate load 68 is small, so that the creep at groove 76 is faster than the creep at groove 74, intermediate free pulley 60 will tend to move upward toward the main pulley 56. If the intermediate load 68 is large, so that the creep at groove 76 is slower than the creep at groove 74, intermediate free pulley 60 will tend to move downward away from the main pulley 56.
  • the intermediate pulley 60 is rotatably mounted at a fixed distance from the main pulley $6, the intermediate load will be self-regulating, seeking a value that results in equal creep rates at the main pulley grooves 74 and 76. Thus the tension increments associated with these two passes over the main pulley will be approximately equal.
  • the use of intennediate pulleys permits the effective angle of wrap on the main pulley to be increased, providing a higher tension ratio with a given coefficient of friction. It avoids sideslip and abrasion inherent in a conventional multiwrap capstan where there are no distinct grooves.
  • FIG. 3 illustrates the V-shape of the grooves in the pulley 56.
  • the V-shaped groove increases the normal force acting between the wire, or other round strand, and the sides of the pulley which it contacts. This normal force can be increased by decreasing the angle A of the groove, thereby increasing the effective coefficient of friction. However, if the angle is decreased until it is very narrow, the wire tends to be trapped in the V-groove or damaged by the increased normal force.
  • the V-groove pulley can be constructed as a stack of disks 56X, 56Y, and 562, each having beveled edges, as shown in FIG. 33. This design facilitates precise fabrication and permits disassembly for cleaning.
  • FIGS. 4 and 5 illustrate still another embodiment of the invention wherein provisions are made to take up the elongations in the loop of wire subjected to the test tension.
  • the wire I00 extends around two guide pulleys W2 and MM, two main pulleys 106 and 108, two intermediate pulleys Iillb, and H4, and one free pulley H2.
  • the guide pulleys 102, MM, main pulleys 106, I08 and intermediate pulleys 1110, 1143 are rotatably mounted on a frame 116.
  • the free pulley H2 is mounted on a lever 126 that is pivotally mounted at 12$ on the frame I M.
  • a weight 134 suspended from the opposite end of the lever 1126 biases the primary free pulley 112 away from the main pulleys.
  • Each of the main pulleys has three grooves, while each of the intermediate pulleys has two grooves, to permit a higher ratio of tension. Where such a high ratio is not required, only two pulley grooves per main pulley and one groove per intermediate pulley can be employed.
  • a differential drive 132 In order to prevent excessive lengthening of the wire loop extending to and around the free pulley 112, by reason of creep, a differential drive 132 is provided.
  • the drive comprises a pair of bevel gears 134 and 136 fixed to the main pulleys I06, 108, respectively, and a differential gear I38 that is engaged with the two bevel gears.
  • the differential gear is rotatably mounted on a support 140.
  • a gear head motor 142 has a shaft 144 that extends through holes in the main pulley I08 and frame, and is fixed to the differential gear support M0.
  • the main pulleys 1106 and 108 rotate at the same speed, but in opposite directions as shown by arrows M6 and M8. (They must rotate at the same peripheral speed, which is achieved by identical speeds for pulleys of the same diameter.)
  • the differential gear 138 does not translate about the axis M1 of the motor shaft, and the gear support Mil remains stationary without affecting the operation of the testing apparatus.
  • the lever 126 contacts a button on a switch sensor 152.
  • the sensor 1152 thereupon causes energization of the motor M2 for a brief period.
  • the motor 142 slowly turns shaft 144 in the direction of arrow 154, causing the differential gear support 140, and the differential gear 138 thereon, to rotate around the motor axis. This results in the main pulley 1% turning more slowly than the other main pulley me, which shortens the wire loop around the free pulley. As a result, the free pulley I12 moves up to decrease the distance between it and the main pulleys.
  • a bending test can be performed on the continuously moving wire by forcing it around a small diameter wheel while it is under substantial tension.
  • the apparatus of FEG. 6 illustrates part of a tension and bending tester, comprising a pair of main pulleys MW, 162 and a free pulley apparatus lo l. Guiding pulley apparatus (not shown) of the type described above leads wire to and from the main pulleys. A weight indicated by arrow lied biases the free pulley apparatus away from the main pulleys. instead of using one free pulley, a pair of pulleys lltili and 117i) is used.
  • a small diameter bending test pulley T72 is mounted on the free pulley apparatus. Retaining flanges ll'73 are mounted at either end of the bending test pulley to keep the wire thereon.
  • the wire is subjected to a high bending stress as it passes over the bending test pulley, the bending stress depending upon the tension in the wire (which is one-half the weight ins and the diameter of the test pulley T72.
  • the test pulley 1172 can be used with a single free pulley. However, the wire wrap about the test pul ley then varies slightly as the free pulley moves up and down.
  • Apparatus for applying bending stress and tension to a limited interval of moving wire means comprising:
  • pulley means with first and second grooves; wire-engaging means for leading said wire means from said first groove to said second groove; means for biasing apart said pulley means and wire-engaging means to subject the interval of said wire means extending between them to an increased tension; and bending test pulley means disposed along said interval of said wire means extending between said first and second grooves, for guiding said wire means in a small radius path.
  • first and second main pulley means rotatably mounted on said frame; free wire engaging means oriented to lead said material between said first and second main pulley means; means for biasing said free wire engaging means away from said main pulley means; means for guiding said elongated material onto said first main pulley means for at least on the order of 180 wrap thereabout prior to extension to said wire-engaging means; said first main pulley means having first and second grooves, with said first groove positioned to receive elongated material from said means for guiding material onto said first main pulley means, and said second groove positioned to deliver said elongated material to said wire-engaging means; and intermediate pulley means for guiding said elongated material from said first groove to said second groove; and means for guiding said elongated material oil from said second main pulley means at a position relative to said wire-engaging means for at least on the order of 180 wrap about said second main pulley means.
  • Apparatus for testing wire and hire elongated material comprising:
  • first and second main pulleys rotatably mounted on said frame
  • coupling means for coupling said first and second pulleys for rotation in opposite directions at approximately the same peripheral speed.
  • first main pulley has first and second grooves, with said first groove positioned to receive elongated material from said means for guiding material to said first pulley and said second groove positioned to deliver said elongated material to said free pulley; and including intermediate pulley means for guiding said elongated material from said first groove to said second groove.
  • the apparatus described in claim s including:
  • said coupling means includes differential gear means coupled to said first and second main pulleys, support means for rotatably mounting said differential gear means, motor means for rotating said support means, and means responsive to the relative position of said free pulley and mount means for controlling said motor means to cause the length of material extending to and from said free pulley to be maintained at less than a preselected value.
  • the apparatus of claim ill further comprising bending test pulley means disposed along the interval of said elongated material extending between said first and second main pulley for guiding said material in a small radius path.

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  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Testing Relating To Insulation (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
US812971A 1969-04-01 1969-04-01 Tensile loading apparatus for moving wire Expired - Lifetime US3643497A (en)

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US81297169A 1969-04-01 1969-04-01

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US (1) US3643497A (fr)
JP (1) JPS4919829B1 (fr)
BE (1) BE743912A (fr)
FR (1) FR2038096A1 (fr)
GB (1) GB1290193A (fr)
NL (1) NL6919697A (fr)
NO (1) NO126346B (fr)
SE (1) SE355077B (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855592A1 (de) * 1978-12-22 1980-06-26 Tidland Gmbh Vorrichtung zum messen der spannung einer ablaufenden warenbahn
US4286469A (en) * 1980-02-06 1981-09-01 The United States Of America As Represented By The Secretary Of The Navy Optical fiber test apparatus
US5016476A (en) * 1989-07-25 1991-05-21 Hughes Aircraft Company Optical fiber bending stress proof tester
US5263623A (en) * 1991-10-28 1993-11-23 Wespatt, Inc. Tensioning apparatus for a web threading endless rope
US5375753A (en) * 1993-10-04 1994-12-27 Wespatt, Inc. Tensioning apparatus for a web threading endless rope
US5377892A (en) * 1993-08-12 1995-01-03 Wespatt, Inc. Fluid pressure tensioning apparatus for a web threading endless rope
US5992721A (en) * 1997-01-06 1999-11-30 Mec Enterprises, Inc. Rodless cylinder rope tensioning apparatus
US6276519B1 (en) 1998-01-02 2001-08-21 Michael E. Craft Rodless cylinder rope tensioning apparatus
US20100009793A1 (en) * 2008-07-02 2010-01-14 James Payne Tensioning device
US20110146423A1 (en) * 2009-12-23 2011-06-23 Verizon Patent And Licensing Inc. Media cross-sectional and axial bend uniformity tester
CN102815581A (zh) * 2012-07-30 2012-12-12 福建浔兴拉链科技股份有限公司 一种尼龙单丝恒张力送丝机
US8689636B2 (en) * 2012-03-29 2014-04-08 Corning Incorporated Optical fiber tensile screening method and device
CN104165805A (zh) * 2014-08-22 2014-11-26 国家电网公司 一种用于导线检测装置的张力施加系统
CN105241766A (zh) * 2015-09-29 2016-01-13 武汉钢铁(集团)公司 一种冷轧钢带力学性能检测装置及方法
CN105351488A (zh) * 2015-11-15 2016-02-24 岳文智 一种皮带驱动式主动轮调试机构
JPWO2014125625A1 (ja) * 2013-02-15 2017-02-02 不二精工株式会社 フェスツーン装置
US20190345680A1 (en) * 2017-01-30 2019-11-14 Geobrugg Ag Wire mesh
US20190344328A1 (en) * 2017-01-30 2019-11-14 Geobrugg Ag Wire mesh and method for identifying a suitable wire
CN110823678A (zh) * 2019-11-25 2020-02-21 北京北冶功能材料有限公司 一种金属细丝高温拉伸试验装置及其试验方法
CN113074857A (zh) * 2021-03-16 2021-07-06 北京工业大学 一种用于张力测量的五滑轮张力测试系统
FR3114403A1 (fr) * 2020-09-23 2022-03-25 Electricite De France Procédé d’expérimentation pour réaliser un essai de vieillissement d’un matériau isolant, et système d’expérimentation pour mettre en œuvre un tel procédé d’expérimentation

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JPS5667299A (en) * 1979-11-06 1981-06-06 Yoshio Midorikawa Marking pen holder
JPS57204180U (fr) * 1981-06-24 1982-12-25
JPS5850984U (ja) * 1981-10-01 1983-04-06 木村　昌夫 ホルダ−
CN112850349A (zh) * 2021-01-04 2021-05-28 深圳市台钜电工有限公司 一种恒张力绕线机

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GB841255A (en) * 1956-05-15 1960-07-13 Dunlop Rubber Co Improvements in or relating to textile testing apparatus
US3051362A (en) * 1960-05-05 1962-08-28 Nat Standard Co Bead building apparatus

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
GB841255A (en) * 1956-05-15 1960-07-13 Dunlop Rubber Co Improvements in or relating to textile testing apparatus
US3051362A (en) * 1960-05-05 1962-08-28 Nat Standard Co Bead building apparatus

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855592A1 (de) * 1978-12-22 1980-06-26 Tidland Gmbh Vorrichtung zum messen der spannung einer ablaufenden warenbahn
US4286469A (en) * 1980-02-06 1981-09-01 The United States Of America As Represented By The Secretary Of The Navy Optical fiber test apparatus
US5016476A (en) * 1989-07-25 1991-05-21 Hughes Aircraft Company Optical fiber bending stress proof tester
US5379932A (en) * 1991-10-28 1995-01-10 Wespatt, Inc. Tensioning apparatus for a web threading endless rope
US5263623A (en) * 1991-10-28 1993-11-23 Wespatt, Inc. Tensioning apparatus for a web threading endless rope
US5377892A (en) * 1993-08-12 1995-01-03 Wespatt, Inc. Fluid pressure tensioning apparatus for a web threading endless rope
US5375753A (en) * 1993-10-04 1994-12-27 Wespatt, Inc. Tensioning apparatus for a web threading endless rope
US5992721A (en) * 1997-01-06 1999-11-30 Mec Enterprises, Inc. Rodless cylinder rope tensioning apparatus
US6276519B1 (en) 1998-01-02 2001-08-21 Michael E. Craft Rodless cylinder rope tensioning apparatus
US20100009793A1 (en) * 2008-07-02 2010-01-14 James Payne Tensioning device
US20110146423A1 (en) * 2009-12-23 2011-06-23 Verizon Patent And Licensing Inc. Media cross-sectional and axial bend uniformity tester
US9140623B2 (en) * 2009-12-23 2015-09-22 Verizon Patent And Licensing Inc. Media cross-sectional and axial bend uniformity tester
US8468896B2 (en) * 2009-12-23 2013-06-25 Verizon Patent And Licensing Inc. Media cross-sectional and axial bend uniformity tester
US20130269455A1 (en) * 2009-12-23 2013-10-17 Verizon Patent And Licensing Inc. Media cross-sectional and axial bend uniformity tester
US8689636B2 (en) * 2012-03-29 2014-04-08 Corning Incorporated Optical fiber tensile screening method and device
CN102815581A (zh) * 2012-07-30 2012-12-12 福建浔兴拉链科技股份有限公司 一种尼龙单丝恒张力送丝机
CN102815581B (zh) * 2012-07-30 2016-12-21 福建浔兴拉链科技股份有限公司 一种尼龙单丝恒张力送丝机
JPWO2014125625A1 (ja) * 2013-02-15 2017-02-02 不二精工株式会社 フェスツーン装置
US9919894B2 (en) 2013-02-15 2018-03-20 Fuji Seiko Co., Ltd. Festoon device
CN104165805A (zh) * 2014-08-22 2014-11-26 国家电网公司 一种用于导线检测装置的张力施加系统
CN105241766B (zh) * 2015-09-29 2018-11-13 武汉钢铁有限公司 一种冷轧钢带力学性能检测装置及方法
CN105241766A (zh) * 2015-09-29 2016-01-13 武汉钢铁(集团)公司 一种冷轧钢带力学性能检测装置及方法
CN105351488A (zh) * 2015-11-15 2016-02-24 岳文智 一种皮带驱动式主动轮调试机构
US20190345680A1 (en) * 2017-01-30 2019-11-14 Geobrugg Ag Wire mesh
US20190344328A1 (en) * 2017-01-30 2019-11-14 Geobrugg Ag Wire mesh and method for identifying a suitable wire
US10544552B2 (en) * 2017-01-30 2020-01-28 Geobrugg Ag Wire mesh
US10549335B2 (en) * 2017-01-30 2020-02-04 Geobrugg Ag Wire mesh and method for identifying a suitable wire
CN110823678A (zh) * 2019-11-25 2020-02-21 北京北冶功能材料有限公司 一种金属细丝高温拉伸试验装置及其试验方法
FR3114403A1 (fr) * 2020-09-23 2022-03-25 Electricite De France Procédé d’expérimentation pour réaliser un essai de vieillissement d’un matériau isolant, et système d’expérimentation pour mettre en œuvre un tel procédé d’expérimentation
CN113074857A (zh) * 2021-03-16 2021-07-06 北京工业大学 一种用于张力测量的五滑轮张力测试系统

Also Published As

Publication number Publication date
JPS4919829B1 (fr) 1974-05-20
GB1290193A (fr) 1972-09-20
DE1963120B2 (de) 1972-09-21
SE355077B (fr) 1973-04-02
BE743912A (fr) 1970-05-28
NO126346B (fr) 1973-01-22
DE1963120A1 (de) 1970-11-05
FR2038096A1 (fr) 1971-01-08
NL6919697A (fr) 1970-10-05

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