US3447303A - Flyer head cap for rovings - Google Patents

Flyer head cap for rovings Download PDF

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Publication number
US3447303A
US3447303A US658509A US3447303DA US3447303A US 3447303 A US3447303 A US 3447303A US 658509 A US658509 A US 658509A US 3447303D A US3447303D A US 3447303DA US 3447303 A US3447303 A US 3447303A
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US
United States
Prior art keywords
cap
roving
flyer
flyer head
head
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
US658509A
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English (en)
Inventor
Erich Loepfe
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.)
Loepfe AG Gebrueder
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Loepfe AG Gebrueder
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 Loepfe AG Gebrueder filed Critical Loepfe AG Gebrueder
Application granted granted Critical
Publication of US3447303A publication Critical patent/US3447303A/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
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/24—Flyer or like arrangements
    • D01H7/48—Eyes or like guiding arrangements

Definitions

  • a fiyer'head for rovings is provided with a coaxially mounted plate-like 'cap the outer diameter of which is substantially greater than the diameter of the flyer head and which constitutes at least a portion ofthe upper surface of the'inlet'opening for the rovings.
  • This invention relates to a flyer head for rovings and refers more particularly to that part of a flyer which is used for guiding rovings coming from the drawing frame prior to their entry into the flyer arm.
  • the flyer head To guide the roving the flyer head is provided with an inlet opening located coaxially to the rotating spinning system and two side outlet openings used selectively, depending upon the desired twist.
  • the location at which the roving enters the flyer head is of importance from two different points of view. One of them pertains to the rotation which is being imparted to the roving. Due to its inclined direction at the time of its entry, the roving does not assume the full twist corresponding to the spindle rotations in the open stretch between the drawing frame and the flyer head.
  • the inlet opening has been formed by an insert or cap, made, for example, from rubber or plastics, and provided upon the base of the fly or head.
  • the shape of these caps or inserts, also called twist crowns, corresponds substantially to the basic shape of the flyer head, whereby the outer diameters of the insert and of the base were made approximately the same.
  • the second point of view concerns the case when the roving breaks during spinning.
  • breaking can take place in the free piece of roving between the drawing frame and the flyer head where it can be supervised comparatively easily, for example, by means of a light screen.
  • the breaking can take place under the flyer head and particularly in the location of the strongest pull tension of that part, namely, at the place where the roving leaves the pressing finger. In most cases the breaking of the roving under the flyer head will not be detected on time by the supervision of the free piece of roving.
  • An object of the present invention is to shape the flyer head in such manner that the possibility of the formation of windings is diminished and that in case a winding is formed, its formation is such that a secure supervision is made possible.
  • a dish-like cap mounted coaxially upon the flyer head and having an outer diameter which is substantially greater than the diameter of the flyer head and which forms at least a part of the upper limiting surface of the inlet opening for the roving.
  • FIGURE 1 is a section through a flyer head cap having a slightly concave inner surface
  • FIGURE 2 is a section through a similar cap having a flat conical inner surface
  • FIGURE 3 is a section through a flyer head cap serving at the same time as a twist head.
  • FIG. 1 shows a flyer head 1 having an upper inlet opening 2 and two symmetrically located side outlet openings 3 for the roving.
  • the plate-like cap 4 constituting the subject of the present invention has an upper surface which is slightly bent toward the roving which is not shown, and has a smooth connection to the portion of the inlet opening formed by the body of the flyer head. The inclination and the curvature of this limiting surface and the diameter of the plate-like cap 4 are such that the cap does not come in contact with the roving during normal operation.
  • the plate-like cap 4 will prevent the roving from winding itself around the flyer head and thereby produce, for example, a flat coil. In many instances no coil at all will be formed and the breaking will be discovered by the supervision device located at the outlet of the drawing frame. If a coil is formed it can grow only upwardly and will be positively determined there by a light screen, for example. The plate-like cap then serves at the same time as a support for the coil which as the result will become more stable, so that the machine can be stopped before the coil is separated from the fiyer head.
  • FIG. 2 shows a somewhat different construction of a plate-like cap 4' the upper limiting surface of which constitutes a fiat upwardly widening frusto-conical surface.
  • the flyer head 1 can be also provided with a twisting device 5 which is engaged by the roving while the cap is of such size that normally the roving does not touch it.
  • FIG. 3 illustrates a construction wherein a plate-like cap 4" constitutes at the same time the twisting device.
  • the cap is provided, for example, at its inlet with a number of ribs 6 which frictionally engage the roving and thus impart twists thereto.
  • the entire cap can be made of a plastic material and can be glued or pressed upon the body of the flyer head.
  • the described constructions of the flyer head constitute an extremely simple and effective solution of the above stated problems. They have also the advantage that they can be easily applied to existing machines and that they do not interfere with the servicing, namely, the threading.
  • the present invention results in a most effective influencing of coil formation and thus contributes greatly to the methods of supervising flyers.
  • the platelike cap of the present invention can have a fiat upper limiting surface so that it will consist essentially of a thin disc.
  • the described elfect remains substantially the same in the possible different variations in the shape of the flyer head cap of the present invention.
  • a wide cap designed to diminish the formation of windings above the flyer head having an upper plate-like surface with a central opening directly engaging said inlet opening whereby said upper plate-like surface constitutes a direct continuation of the upper surface of the flyer head, said surface having an outer diameter which is a multiple of that of said inlet opening, said cap being plate-like in shape and being coaxially mounted upon said flyer head.
  • a cap in accordance with claim 1, wherein said surface is an upper limiting surface having a slightly concave curvature.
  • a cap in accordance with claim 1, wherein said surface is an upper limiting surface having the shape of an outwardly extending frusto-conical surface.
  • a cap in accordance with claim 1, comprising means engaging and twisting the roving and located in the central portion of the cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Harvester Elements (AREA)
US658509A 1966-08-11 1967-08-04 Flyer head cap for rovings Expired - Lifetime US3447303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1170966A CH442092A (de) 1966-08-11 1966-08-11 Flyer-Flügelkopf

Publications (1)

Publication Number Publication Date
US3447303A true US3447303A (en) 1969-06-03

Family

ID=4376126

Family Applications (1)

Application Number Title Priority Date Filing Date
US658509A Expired - Lifetime US3447303A (en) 1966-08-11 1967-08-04 Flyer head cap for rovings

Country Status (3)

Country Link
US (1) US3447303A (de)
CH (1) CH442092A (de)
DE (1) DE1685635A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122653A (en) * 1977-08-08 1978-10-31 Argereu W Grommet for roving machine
US4399649A (en) * 1980-06-24 1983-08-23 C. Eugen Maier Metallverarbeitung Gmbh Spinning flyer construction

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR862759A (fr) * 1940-01-05 1941-03-14 Douglas Fraser & Sons Ltd Perfectionnements apportés aux broches à ailette actionnées par noix
US2294742A (en) * 1941-03-28 1942-09-01 Douglas Fraser & Sons Ltd Wharve driven flyer spindle
US2310685A (en) * 1941-04-10 1943-02-09 Douglas Fraser & Sons Ltd Wharve-driven flier spindle
FR1102323A (fr) * 1954-06-10 1955-10-19 Procédé et dispositif de fausse torsion dans les bancs à broches
US2753679A (en) * 1951-08-31 1956-07-10 Schmoller Fritz Von Twisting device
US2814926A (en) * 1956-05-29 1957-12-03 Berberich Helmut Fly spinner attachment
US2867970A (en) * 1955-05-31 1959-01-13 Richter Rudolf Flyers for roving machines
US2878637A (en) * 1955-03-18 1959-03-24 Henry M Bacon Flyer-head roving pre-twister condenser

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR862759A (fr) * 1940-01-05 1941-03-14 Douglas Fraser & Sons Ltd Perfectionnements apportés aux broches à ailette actionnées par noix
US2294742A (en) * 1941-03-28 1942-09-01 Douglas Fraser & Sons Ltd Wharve driven flyer spindle
US2310685A (en) * 1941-04-10 1943-02-09 Douglas Fraser & Sons Ltd Wharve-driven flier spindle
US2753679A (en) * 1951-08-31 1956-07-10 Schmoller Fritz Von Twisting device
FR1102323A (fr) * 1954-06-10 1955-10-19 Procédé et dispositif de fausse torsion dans les bancs à broches
US2878637A (en) * 1955-03-18 1959-03-24 Henry M Bacon Flyer-head roving pre-twister condenser
US2867970A (en) * 1955-05-31 1959-01-13 Richter Rudolf Flyers for roving machines
US2814926A (en) * 1956-05-29 1957-12-03 Berberich Helmut Fly spinner attachment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122653A (en) * 1977-08-08 1978-10-31 Argereu W Grommet for roving machine
US4399649A (en) * 1980-06-24 1983-08-23 C. Eugen Maier Metallverarbeitung Gmbh Spinning flyer construction

Also Published As

Publication number Publication date
DE1685635A1 (de) 1971-08-19
CH442092A (de) 1967-08-15

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