US3053474A - Tension control device - Google Patents

Tension control device Download PDF

Info

Publication number
US3053474A
US3053474A US833103A US83310359A US3053474A US 3053474 A US3053474 A US 3053474A US 833103 A US833103 A US 833103A US 83310359 A US83310359 A US 83310359A US 3053474 A US3053474 A US 3053474A
Authority
US
United States
Prior art keywords
annular
electromagnet
magnetizable material
pole
coil
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
US833103A
Other languages
English (en)
Inventor
Fred L Luntz
Vincent E Lynch
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.)
Telephonics Corp
Original Assignee
Telephonics Corp
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
Application filed by Telephonics Corp filed Critical Telephonics Corp
Priority to US833103A priority Critical patent/US3053474A/en
Priority to GB26932/60A priority patent/GB904046A/en
Priority to CH906060A priority patent/CH368357A/fr
Priority to FR835599A priority patent/FR1264937A/fr
Application granted granted Critical
Publication of US3053474A publication Critical patent/US3053474A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • 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
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/225—Tension discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to tensioning devices and, more particularly, to a device to develop controllable tension in a moving thread or strand.
  • a principal object of the invention is to provide a new and improved structural arrangement for a tension control device.
  • the device of the invention provides a new and greatly simplified structural arrangement for a strand tensioning device to obtain greater efliciency in manufacture and in operation and to obtain greater sensitivity of adjustment for the tension to be applied.
  • a first member having a surface to cooperate with a disc is provided with an electrical coil and arranged so that a gap of fixed dimensions is formed between two magnetic poles.
  • the disc is formed of a magnetizable material so that it is urged toward the poles under the influence of a magnetic field developed by the electrical coil.
  • a device in accordance with the invention is operable with all forms of strand material, either textile or otherwise. Moreover, the tensiouing device of the invention is adaptable for operation automatically to maintain a predetermined uniform tension on the strand as the linear speed of the strand is varied. In addition, the smaller magnitude of electric current required by the increased efficiency of the magnetic circuit greatly simplifies the electric installation problems.
  • Some examples of uses to which the device of the invention is adaptable are with warpers, quill winders, cone and package winders, doublers, twisters and circular stocking knitting machines. In such uses the device fits into standard holding brackets usually found on such machines.
  • a device constructed in accordance with the invention being responsive to relatively small electric current changes, is uniquely adapted to provide incrementally small changes in the tension applied to the strand to maintain the tension at a predetermined constant value.
  • FIG. 1 is an exploded view in perspective of a preferred form of the invention
  • FIG. 2 is a view in elevation of the device shown in FIG. 1;
  • FIG. 3 is a plan view of the device as shown in FIG. 2;
  • FIG. 4 is a cross-sectional view taken along the lines 44 of FIG. 3.
  • the tensioning device is provided with a cup-shaped housing 11 formed of a suitable magnetizable material, such as, for example, soft iron or steel.
  • the rim of the housing 11 is turned up to provide the cup-shaped appearance and to form one annular pole 12 of an electromagnet.
  • a centrally located aperture 13 in the housing 11 provides means for assembly, as will appear from the description to follow.
  • a circular plate 14- is formed of a magnetizable material which, if desired, may be the same material that forms the cup-shaped housing 1 1 and is provided with a depending hub 15 having a centrally located aperture 16 to match the aperture 13.
  • the hub 15 is of sufficient length to bear aganst the inner surface of the cup-shaped housing '11.
  • the peripheral portion of the circular plate 14 is enlarged to provide a second magnetic pole17, and the radius of the circular plate or pole member 14 is smaller than the radius of the housing 11 so that a gap 18 is formed between the two poles 12 and 17.
  • a ring 19 of non-magnetizable material such as brass is press-fitted around the peripheral portion of the circular plate 14 and is provided with an annular downwardly facing groove 20 to receive the magnetic pole 12.
  • an electrical coil 21, which is wound directly on the hub 15, provides an electromagnetic source to magnetize the loop including the hub 15, housing 1 1, pole 12, gap 18, pole 17, and the plate 14.
  • Electrical leads 22 protruding through an opening 23 in the housing 11 provide means for connecting a suitable voltage source (not shown) to energize the coil 21.
  • a freely revolvable disc 24 of magnetizable material forms a magnetic bridge across the gap 18 between the two poles 12 and '17 so that the magnetic lines of force traversing the above referred to loop will be diverted from the gap 18 to the disc 24 and back to the pole 12 across a smaller gap 25.
  • the dimensions of the gap 18 are selected so that even With a thread 26 in place for tensioning, as shown in FIG. 2, the gap 25 between the pole 12 and the magnetizable disc 24 is preferably smaller than the gap 18. At least, the magnetic reluctance of the gap 25 is less than the magnetic reluctance of the gap 18. In this manner, the disc 24 is urged toward the upper surface provided by the pole 17 and the ring 19 by a magnetic force which is controllable by the energization current applied to the coil 21.
  • the post 27 is revolva-ble by a thread 26 passing around the post as illustrated in FIG. 3. Therefore, a nut 29 is threaded on the bolt 28 only sufficiently to provide upright support for the post 27.
  • the inner corners 30 and 31 on the mag-net pole *1! and the disc 24, respectively, are rounded to prevent wear and possibly breakage of the thread 26 as it passes around the post 27.
  • the outer corners 32 and 33 are canted for the same reason. I v
  • the above-described structural arrangement provides the advantages that the upper surface provided by the 1 pole 17 and the ring '19 can be manufactured to closer
  • An additional advantage provided by the ring 19 is that the increased surface area prevents a tendency for a thread to ride out of the device when operation is ceased.
  • an applied potential of four volts produces a tension of approximately grams with devices heretofore known whereas the same potential produces a tension of approximately 100 grams with the device of the invention.
  • the tensioning device as described above permits a tension to be developed in a moving thread in the order of 100 grams due solely to the magnetic attraction of the disc 24.
  • higher tensions can be developed by adding weights (not shown) to the disc 24.
  • a thread or strand is positioned between the disc 24 and the upper surface provided by the pole 17 and ring 19, and an electric current is applied to energize the coil 21.
  • the magnetic lines of force resulting from the energization of the coil 21 urges the disc 24 toward the surface provided by the pole 17 and the ring 19, the intensity of the magnetic attraction being controlled by varying the magnitude of the electric current.
  • Most of the magnetic lines of force pass through the disc 24 which bridges the poles 12 and 17, thus, attracting the disc 24 to squeeze the thread or strand.
  • Negligible lines of force pass through the gap 18 due to its greater length or reluctance compared with the length of the gap 25.
  • the hub 15 may, if desired, be formed integrally with the cup-shaped housing 11, and the coil 21, therefore, will be formed directly within the housing 11 in substantially the same position as that shown in FIG. 4 of the drawings. Therefore, it is understood that the invention is not to be limited to any specified form or embodiment except in so far as such limitations are set forth in the appended claims.
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an annular coil, a housing of magnetizable material for the coil forming an annular pole of the electromagnet, a central core of magnetizable material mounted in the housing within the annular coil and magnetically coupled o to the housing, a relatively fixed annular plate of magnet izable material coupled in magnetic circuit relation to the central core and extending over at least a portion of the annular coil to form an opposite pole of the electromagnet and to define a gap of predetermined magnetic reluctance between the poles, the annular plate having an upper surface against which a moving strand is squeezed to apply tension thereto, a ring of non-magnetizable material fixedly mounted about and having an upper surface lying in a plane with said upper surface of said annular plate and extending radially therefrom to form an extension of the upper surface thereof, and a disc of magnetizable material positioned adjacent the poles of the electromagnet and in magnetic circuit relation therewith so as
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an annular coil, a housing of magnetizable material forming an annular pole about the annular coil, a relatively fixed annular plate of magnetizable material extending over a portion of the annular coil toward the annular pole to form an opposite pole of the electromagnet and to define a gap of predetermined magnetic reluctance, the annular plate having an upper surface against which a moving strand is squeezed to apply tension thereto, a ring of non-magnetizable material fixedly mounted about and having an upper surface lying in a plane with said upper surface of said annular plate and extending radially there from to form an extension of the upper surface thereof, a disc of magnetizable material positioned adjacent the poles of the electromagnet and in magnetic circuit relation therewith so as to be urged toward said upper surface of the annular plate and ring by the electromagnet for applying a controllable tension to a strand moving therebetween, and said ring passing between said
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an annular coil, a housing of magnetizable material for the coil forming an annular pole of the electromagnet, a central core of magnetizable material mounted within the annular coil and magnetically coupled to the housing, a relatively fixed annular plate of magnetizable material coupled magnetically to the central core and extending over at least a portion of the annular coil to form an opposite pole of the electromagnet and to define a gap of predetermined dimensions between the poles, the annular plate having an upper surface against which a moving strand is squeezed to apply tension thereto, a ring of non-magnetizable material fixedly mounted about and having an upper surface lying in a plane with said upper surface of said annular plate and extending radially therefrom to form an extension of the upper surface thereof, a post extending from the annular plate along a line substantially perpendicular to the plate, and a disc of magnetizable material having an aperture to receive the post so that the
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an annular coil, a housing of magnetizable material for the coil forming an annular pole of the electromagnet, a central core of magnetizable material mounted within the annular coil and magnetically coupled to the housing, a relatively fixed annular plate of magnetizable material coupled magnetically to the central core and extending over at least a portion of the annular coil to form an opposite pole of the electromagnet and to define a gap of predetermined magnetic reluctance between the poles, the annular plate having an upper surface against which a moving strand is squeezed to apply tension thereto, a ring of non-magnetizable material fixedly mounted about and having an upper surface lying in a plane with said upper surface of said annular plate and extending radially therefrom to form an extension of the upper surface thereof, a post extending from the annular plate along a line substantially perpendicular to the plate, a disc of magnetizable material having an aperture to receive the
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an an nular coil, a housing of magnetizable material for the coil forming an annular pole of the electromagnet, a central core of magnetizable material mounted within the annular coil and magnetically coupled to the housing, a relatively fixed annular plate of magnetizable material coupled magnetically to the central core and extending over a portion of the annular coil to form an opposite pole of the electromagnet and to define a gap of predetermined magnetic reluctance between the poles, the annular plate having an upper surface against which a moving strand is squeezed to apply tension thereto, a ring of non-magnetizable material fixedly mounted about the periphery of and having an upper surface lying in a plane with said upper surface of said annular plate and radially extending therefrom to form an extension of the upper surface thereof, a post extending from the annular plate along a line substantially perpendicular to the plate, a disc of magnetizable material
  • a device to develop controllable tension in a moving strand comprising an electromagnet including an annular coil, a housing of magnetizable material for the coil forming an annular pole of the electromagnet, a central core of magnetizable material mounted in the housing within the annular coil and magnetically coupled to the housing, a relatively fixed annular plate of magnetizable material coupled in magnetic circuit relation to the central core and extending over at least a portion of the annular coil to form an opposite pole of the electromagnet and to define a gap of predetermined magnetic reluctance between the poles, said annular plate having an upper surface, a ring of non-magnetizable material fixedly mounted about and having an upper surface lying in a plane with said upper surface of said annular plate and extending radially therefrom to form an extension of the upper surface thereof, and a disc of magnetizable material positioned adjacent the poles of the electromagnet and in magnetic circuit relation therewith so as to be urged toward said upper surface of said annular plate and ring by the

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
  • Knitting Machines (AREA)
US833103A 1959-08-11 1959-08-11 Tension control device Expired - Lifetime US3053474A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US833103A US3053474A (en) 1959-08-11 1959-08-11 Tension control device
GB26932/60A GB904046A (en) 1959-08-11 1960-08-03 Strand tension control device
CH906060A CH368357A (fr) 1959-08-11 1960-08-10 Dispositif régulateur de la force de tension d'un fil en mouvement
FR835599A FR1264937A (fr) 1959-08-11 1960-08-11 Perfectionnements aux tendeurs à action variable pour fils en mouvement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US833103A US3053474A (en) 1959-08-11 1959-08-11 Tension control device

Publications (1)

Publication Number Publication Date
US3053474A true US3053474A (en) 1962-09-11

Family

ID=25263435

Family Applications (1)

Application Number Title Priority Date Filing Date
US833103A Expired - Lifetime US3053474A (en) 1959-08-11 1959-08-11 Tension control device

Country Status (3)

Country Link
US (1) US3053474A (fr)
CH (1) CH368357A (fr)
GB (1) GB904046A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373718A (en) * 1967-01-09 1968-03-19 Leesona Corp Constant pressure, solid wax-applicator
US4446691A (en) * 1982-11-10 1984-05-08 Milliken Research Corporation High A.C.-D.C. yarn tension control
US4446690A (en) * 1982-10-18 1984-05-08 Milliken Research Corporation Bar balloon control
US4449354A (en) * 1982-10-18 1984-05-22 Milliken Research Corporation Disc type yarn tension control
US4449355A (en) * 1982-10-18 1984-05-22 Milliken Research Corporation A.C.-D.C. Slotted type yarn tension control
US4449356A (en) * 1982-11-10 1984-05-22 Milliken Research Corporation Continuous A.C. tension control
US4454710A (en) * 1982-10-18 1984-06-19 Milliken Research Corporation Balloon control for yarn texturing machine
US4457129A (en) * 1982-10-18 1984-07-03 Milliken Research Corporation Slotted disc type yarn tension control
US4462557A (en) * 1982-10-18 1984-07-31 Milliken Research Corporation Spring biased electromagnetically controlled tension control
US4516738A (en) * 1982-10-26 1985-05-14 Sipra, Patententwicklungs-Und Beteiligungsgegesellschaft Gmbh Thread-braking device for a textile machine
US4532760A (en) * 1984-02-21 1985-08-06 Milliken Research Corporation D. C. Yarn tension control
US5294071A (en) * 1991-09-12 1994-03-15 W. Schlafhorst Ag & Co. Rotationally driven brake disk arrangement of a yarn tensioning device
CN102704167A (zh) * 2012-06-08 2012-10-03 慈溪太阳洲纺织科技有限公司 针织输纱装置上的夹纱组件
CN111850746A (zh) * 2020-06-18 2020-10-30 江苏兴达钢帘线股份有限公司 一种dts捻股机放线座永磁恒张力装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446567C1 (de) * 1984-12-20 1986-05-07 Lindauer Dornier Gmbh, 8990 Lindau Schussfadenbremse mit stufenweise steuerbarer Bremswirkung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926861C (de) * 1952-07-17 1955-04-25 Siemens Ag Verzweigungsstueck fuer koaxiale Hochfrequenzkabel
US2907535A (en) * 1958-01-02 1959-10-06 Lindly & Company Inc Yarn tensioning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926861C (de) * 1952-07-17 1955-04-25 Siemens Ag Verzweigungsstueck fuer koaxiale Hochfrequenzkabel
US2907535A (en) * 1958-01-02 1959-10-06 Lindly & Company Inc Yarn tensioning device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373718A (en) * 1967-01-09 1968-03-19 Leesona Corp Constant pressure, solid wax-applicator
US4454710A (en) * 1982-10-18 1984-06-19 Milliken Research Corporation Balloon control for yarn texturing machine
US4446690A (en) * 1982-10-18 1984-05-08 Milliken Research Corporation Bar balloon control
US4449354A (en) * 1982-10-18 1984-05-22 Milliken Research Corporation Disc type yarn tension control
US4449355A (en) * 1982-10-18 1984-05-22 Milliken Research Corporation A.C.-D.C. Slotted type yarn tension control
US4457129A (en) * 1982-10-18 1984-07-03 Milliken Research Corporation Slotted disc type yarn tension control
US4462557A (en) * 1982-10-18 1984-07-31 Milliken Research Corporation Spring biased electromagnetically controlled tension control
US4516738A (en) * 1982-10-26 1985-05-14 Sipra, Patententwicklungs-Und Beteiligungsgegesellschaft Gmbh Thread-braking device for a textile machine
US4449356A (en) * 1982-11-10 1984-05-22 Milliken Research Corporation Continuous A.C. tension control
US4446691A (en) * 1982-11-10 1984-05-08 Milliken Research Corporation High A.C.-D.C. yarn tension control
US4532760A (en) * 1984-02-21 1985-08-06 Milliken Research Corporation D. C. Yarn tension control
US5294071A (en) * 1991-09-12 1994-03-15 W. Schlafhorst Ag & Co. Rotationally driven brake disk arrangement of a yarn tensioning device
CN102704167A (zh) * 2012-06-08 2012-10-03 慈溪太阳洲纺织科技有限公司 针织输纱装置上的夹纱组件
CN111850746A (zh) * 2020-06-18 2020-10-30 江苏兴达钢帘线股份有限公司 一种dts捻股机放线座永磁恒张力装置

Also Published As

Publication number Publication date
GB904046A (en) 1962-08-22
CH368357A (fr) 1963-03-31

Similar Documents

Publication Publication Date Title
US3053474A (en) Tension control device
US2519882A (en) Constant torque device
US2907535A (en) Yarn tensioning device
US3100091A (en) Yarn tensioning device
US5010722A (en) Rotary ring winding device
US3034744A (en) Magnetic torque tension device
US3022025A (en) Tension control for filamentary materials
GB2125072A (en) Self-adjusting filament tensioner
US2561155A (en) Magnetic bobbin holding means
US2571454A (en) Speed control for electric motors
US1996450A (en) Bobbin drag device for wrapping machines and the like
US2448727A (en) Solenoid with armature
US2601961A (en) Adjustable tension capstan
US3351296A (en) Electromagnetic thread-tension control assembly
US2605875A (en) Adjustable magnetic slip brake
US2444118A (en) Solenoid with plunger
ES314817A1 (es) Aparato para accionar y sostener husos
US2972219A (en) Spindle stop
US4516738A (en) Thread-braking device for a textile machine
US4542618A (en) Thread pull-off aid of variable geometrical configuration for the overhead drawing-off of a thread from a creel bobbin
US3437284A (en) Smooth tension sewing machine bobbin case and bobbin
US2916714A (en) Adjustable inductance coils
US3185902A (en) Anti-chatter solenoid
US2625021A (en) Automatic yarn tension control
US4242658A (en) Magnetic actuator using modulated flux