US3583141A - Radially clamping grips - Google Patents

Radially clamping grips Download PDF

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Publication number
US3583141A
US3583141A US877993A US3583141DA US3583141A US 3583141 A US3583141 A US 3583141A US 877993 A US877993 A US 877993A US 3583141D A US3583141D A US 3583141DA US 3583141 A US3583141 A US 3583141A
Authority
US
United States
Prior art keywords
net
outlet
bow
set forth
yarn
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
US877993A
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English (en)
Inventor
Maurice Poull
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.)
Electrospin Corp
Original Assignee
Electrospin 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
Priority claimed from CH1935868A external-priority patent/CH502452A/fr
Application filed by Electrospin Corp filed Critical Electrospin Corp
Application granted granted Critical
Publication of US3583141A publication Critical patent/US3583141A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
    • D01H7/923—Spinning or twisting arrangements for imparting transient twist, i.e. false twist by means of rotating devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques

Definitions

  • This invention pertains to radially clamping yarn grips ofthe type disclosed in U.S. Pat. No. 3,372,537 which serve to secure a length of yarn angularly therein while allowing the yarn to slide axially and which in one preferred form includes a rigid cylindrical body formed with an axial bore and a plurality of radially clamping filaments housed within the bore.
  • the clamping filaments are distributed equiangularly around the axis of the grip body and are arched to form a bow-net of circular cross section whose narrow end is prolonged to form a bundle.
  • the clamping grip has a resilient sleeve surrounding the bundle which is made of deformable material having a high elastic damping coefficient, the combination being so arranged that the object being gripped can slide axially from the bow-net toward the bundle of filaments and outwardly of the clamping grip.
  • Such an operation may be necessary, inter alia, to engage a yarn in the grip when access to the front thereof is difficult, a not infrequent situation when a grip of this kind is fitted to a textile machine, such as an open end spinning machine of the type disclosed in U.S.Pat. No. 3,411,284 issued Nov. I9, 1968 to Corbaz ct al. for "Method and Apparatus for Spinning Textile Fibers.”
  • This invention provides an improvement, making it readily possible for radial expansion of the central aperture formed by the bundle of filaments from the rear or outlet end.
  • This im provement is characterized in that the central through aperture formed by the flexible filaments of the clamping member is of diverging form at each end, the end of each filament at the outlet end being outwardly in an oblique direction in relation to the axis of the bundle, so that the bent ends together form an outlet bow-net which extends the bundle toward the rear.
  • FIG. I is a view in longitudinal section of the first embodiment
  • FIG. 2 is a rear end view ofFIG. 1,
  • FIGS. 3 and 4 are enlarged views in side and end elevation respectively of an element visible in FIGS. I and 2,
  • FIGS. 5 and 6 are views in longitudinal section and rear elevation respectively of the second embodiment
  • FIG. 13 is a view in longitudinal section of a modification of the first embodiment ofFlG. 1.
  • FIGS. 1 and 2 a grip similar to that in said US. Pat. No. 3,372,537 is shown with a cylindrical body I, its clamping member 3 having an inlet crown 12 of curvilinear funnel shape I3, and a set of flexible filaments 5a to 5g etc.
  • the number offilaments may vary, however, in the present instance 12 are shown.
  • Each flexible filament has a forward part which is arched so that they together form an inlet bow-net being extended by a straight bundle 8.
  • the bundle 8 of fila ments is clamped by a sleeve l0 made ola deformable materi al having a high damping coefficient and which is engaged between the crown I2 and a bearing washer 9 which rests on the base of the cylindrical body 1.
  • the rear or outlet ends 35a to 35g etc. of each of the filaments 5a to 5;; etc. are bent radially in relation to the axis of the bundle 8 so that these bent ends together form an outlet bow-net 36 of conical shape having an opening angle A of less than FIGS. 3 and 4 show the shape taken on by one of the filaments, for instance filament 5g of FIG. 1.
  • This latter filament comprises an arched portion 33 belonging to the inlet bow-net 7, a centrally positioned straight part 34 belonging to the bundle 8, and a rear or outlet end 35 which is so bent relatively to the straight part 34 as to form therewith an angle A which is always less than 90 and which is preferably less than 45.
  • the rear or outlet end 35 is bent in the same plane as the arched portion 33.
  • the filaments thus define a coaxial aperture through the grip which aperture is of uniform cross section throughout its central region and ofdivergent progressively greater cross section toward its opposite ends. This aperture is resiliently radially expansible and contractable to permit insertion of a length of yarn therein and to resiliently retain such yarn.
  • divergent outlet bow-net 36 facilitates the introduction into the grip, from the rear or outlet end thereof, of any rigid member, e.g. a tubular tool containing a yarn which it is proposed to engage in the grip as is fully explained in copending application Ser. No. 88I,357, filed Dec. 2, I969.
  • the second embodiment, shown in FIGS. 56, differs from the first only in that the rear or outlet ends 35a to 35g etc. of the flexible filaments 5a to 5g etc. are bent in a plane other than the plane of the arched portions.
  • the angle Al formed by the rear end 35a with the axis of the straight portion 34a, i.e. the opening angle A of the outlet bow-net 36a is here again less than 90, and preferably less than 45".
  • each of the flexible filaments has the shape shown in FIG. ll-ll2, the rear or outlet end 351) being twisted in a conical helix and portions 33b and 34! being similar to portions 33 and'34 in FIG. 3.
  • FIG. 13 shows the flexible filaments with a 90 prebend 40a which precedes the angular bend 350 similar to that of FIG. 1.
  • This arrangement forms a conical outlet bow-net 36c.
  • This embodiment although it enables the bundle to be opened, for instance by means of a tubular tool, does not allow the latter to be introduced into the bundle, since the 90 bend forms an abutment. The same applies if the bends in accordance with the other embodiments are adapted after an initial 90 bend.
  • the embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
  • a rotatable yarn gripping device for resiliently radially clamping the end of a length of yarn while allowing axial sliding motion of the yarn therethrough, said device comprising a. a rotatable body having means defining a central through aperture with an inlet end, an outlet end, and a central section,
  • said aperture defining means being radially expansible and contractable to vary the diameter of said through aperture and resiliently biased toward its contracted configuration
  • the inlet and outlet ends of said aperture defining means being of divergent form relative to said central section to facilitate insertion of the end of a length of yarn into said central section through the outlet end of said through aperture.
  • said aperture defining means includes a plurality of flexible filaments each having an arched portion forming an inlet bow-net and a central portion forming a bundle, and the end of each said flexible filament opposite said arched portion being bent outwardly in relation to the axis ofsaid body to combine in forming an outlet bow-net.
  • each of said flexible filaments in forming said outlet bow-net is bent in the same plane as the said arched portion of the filament to which it belongs.
  • each of said flexible filaments in forming said outlet bow-net is bent in a plane other than that ofthe said arched portion ofthe filament to which it belongs.
  • each of said flexible filaments in forming said outlet bow-net is twisted in a conical helix.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Clamps And Clips (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US877993A 1968-12-23 1969-11-19 Radially clamping grips Expired - Lifetime US3583141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1935868A CH502452A (fr) 1965-12-23 1968-12-23 Pince à serrage radial

Publications (1)

Publication Number Publication Date
US3583141A true US3583141A (en) 1971-06-08

Family

ID=4438954

Family Applications (1)

Application Number Title Priority Date Filing Date
US877993A Expired - Lifetime US3583141A (en) 1968-12-23 1969-11-19 Radially clamping grips

Country Status (4)

Country Link
US (1) US3583141A (enExample)
DE (1) DE1965427A1 (enExample)
FR (1) FR2026882B2 (enExample)
GB (1) GB1257119A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019795A1 (de) * 1980-05-21 1981-11-26 Filature Saint Andre, Saint Andre, Nord Der erzielung einer garndrehung dienenden reibvorrichtung fuer textilien

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US733299A (en) * 1900-02-19 1903-07-07 George S Miner Spinning-machine.
US2908132A (en) * 1952-01-12 1959-10-13 Hans Berg Device for laying fencing material
US3270491A (en) * 1962-02-08 1966-09-06 American Enka Corp Apparatus for twisting yarn
US3372537A (en) * 1965-12-23 1968-03-12 Poull Maurice Radially clamping grips
US3408807A (en) * 1965-10-29 1968-11-05 Int Standard Electric Corp Twisting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US733299A (en) * 1900-02-19 1903-07-07 George S Miner Spinning-machine.
US2908132A (en) * 1952-01-12 1959-10-13 Hans Berg Device for laying fencing material
US3270491A (en) * 1962-02-08 1966-09-06 American Enka Corp Apparatus for twisting yarn
US3408807A (en) * 1965-10-29 1968-11-05 Int Standard Electric Corp Twisting machine
US3372537A (en) * 1965-12-23 1968-03-12 Poull Maurice Radially clamping grips

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019795A1 (de) * 1980-05-21 1981-11-26 Filature Saint Andre, Saint Andre, Nord Der erzielung einer garndrehung dienenden reibvorrichtung fuer textilien

Also Published As

Publication number Publication date
DE1965427A1 (de) 1970-09-24
GB1257119A (enExample) 1971-12-15
FR2026882B2 (enExample) 1974-02-01
FR2026882A2 (enExample) 1970-09-25

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