US3323555A - Weft inserting mechanism - Google Patents

Weft inserting mechanism Download PDF

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Publication number
US3323555A
US3323555A US443475A US44347565A US3323555A US 3323555 A US3323555 A US 3323555A US 443475 A US443475 A US 443475A US 44347565 A US44347565 A US 44347565A US 3323555 A US3323555 A US 3323555A
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US
United States
Prior art keywords
tape
wheel
housing
air
rim
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
US443475A
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English (en)
Inventor
Maurice R Flamand
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.)
Draper Corp
Original Assignee
Draper 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 Draper Corp filed Critical Draper Corp
Priority to US443475A priority Critical patent/US3323555A/en
Priority to CH198766A priority patent/CH444779A/de
Priority to DE19661535371 priority patent/DE1535371B1/de
Priority to BE678540D priority patent/BE678540A/xx
Priority to GB13671/66A priority patent/GB1074727A/en
Application granted granted Critical
Publication of US3323555A publication Critical patent/US3323555A/en
Assigned to DELTA ACQUISTION CORPORATION reassignment DELTA ACQUISTION CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROCKWELL INTERNATIONAL CORPORATION
Assigned to DRAPER CORPORATION, reassignment DRAPER CORPORATION, CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE APRIL 1,1982 Assignors: DELTA ACQUISITION CORPORATION,
Assigned to CITICORP INDUSTRIAL CREDIT INC. reassignment CITICORP INDUSTRIAL CREDIT INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAPER CORPORATION F/K/A DELTA ACQUISITION CORPORATION
Anticipated expiration legal-status Critical
Assigned to DRAPER CORPORATION, A CORP. OF GEORGIA reassignment DRAPER CORPORATION, A CORP. OF GEORGIA RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CITICORP INDUSTRIAL CREDIT, INC.
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/275—Drive mechanisms
    • D03D47/276—Details or arrangement of sprocket wheels
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/008—Cooling systems

Definitions

  • This invention pertains to an improvement in shuttleless looms of the type wherein filling is drawn from an outside source and placed in a warp shed by flexible inserting members such as tapes and, more particularly, to a means for cooling the tapes as they are wrapped about and extended from oscillating wheels by which they are driven.
  • a further and more specific object of the invention is that of cooling the tape members to obtain an improved and more desirable weaving condition, as a reduction in the tape heat permits a truer and more accurate control of the tape settings at the filling transfer point within the shed formed by warp threads.
  • Shuttleless looms of the type to which the instant invention pertains have reciprocable filling carriers which are alternately wound upon and unwound from the rims of wheels mounted for oscillating movement within substantially enclosed housings disposed at the sides of the loom.
  • This type of loom utilizes an outside source of filling, that is, the supply is not carried to and fro through the warp shed by a shuttle or the filling inserting member itself.
  • the filling thread is measured and cut to the required length for extending across the width of the fabric being woven.
  • a first carrier inserts the filling into the warp shed to a point adjacent the center thereof where it is then transferred to a second carrier member which extends it through the remaining portion of said shed to complete the insertion of a single pick.
  • the flexible tapes when being withdrawn from the shed are wrapped tightly against the rim or outer periphery of their respective tape wheel, but when they are being unwrapped from the wheel and inserted into the shed, a guide means is required to hold them radially inward and in close proximity with the rim.
  • tape restraining devices have included such elements as rollers, magnets and arcuate shoe members made of such materials as impregnated wood or plastic.
  • the more common form of tape restraining means in use today is that of the arcuated shoe type.
  • Each oscillating wheel is provided with a plurality of these shoes circumferentially disposed about and in close proximity with the outer periphery of the wheel.
  • On the inner arcuated surface of each shoe 3,323,555 Patented June 6, 1967 it is common practice to utilize a wear and friction resistant material for guiding the flexible tape members as they are unwound from their respective wheels and inserted into the warp shed.
  • each restraining shoe member has a crowned cross-sectional configuration which provides line contact with the flexible tapes as they are unwound from their respective wheel. Should this line contact be closer to one edge of the tape than the other, the frictional contact will cause that side of the tape to absorb more heat than its opposite side.
  • Such a condition has been known to create a bi-metallic condition whereby the warmer side of said tape will bow in a lateral direction.
  • the bowing of flexible tapes under such conditions is considered quite serious for it alters the intended and desired position of the carrier members at the filling transfer point within the shed.
  • An extreme condition, such as both tapes being caused to bow in opposite directions, will create a more serious condition whereby one carrier will fail to transfer the filling with a possible collision of the carriers resulting in breakage thereof and the tearing out of many warp threads.
  • the device according to the instant invention provides a positive circulation of air within the housings in which the wheels are mounted for oscillating movement.
  • the housing itself includes a plurality of air inlet and outlet ports or openings and the wheel mounted therein is provided with a plurality of spaced vane members. These vane members are fixedly attached to the spoke portions of the wheel adjacent the rim thereof and are so formed as to cause a positive circulation of air around said rim and the pathway of the tape as the wheel moves in that direction to unwind the tape therefrom.
  • air is drawn through intake ports disposed in the housing adjacent the hub of the wheel, and the warmer circulated air is expelled through the outlet ports disposed adjacent the outer edge of said housing.
  • FIG. 1 is a perspective view of a portion of a shuttleless loom as seen looking from the front thereof showing the various components of the invention and their relationship to the flexible tape and tape wheel;
  • FIG. 2 is a view partially in section taken along line 22 in FIG. 1;
  • FIG. 3 is a view partially in section of a portion of the tape wheel and housing showing a modification of the air circulating means.
  • FIG. 1 enough of a shuttleless loom is illustrated in FIG. 1 to serve as a basis for a detailed description of the invention as applied thereto.
  • the tape wheel housing which assembles to the left-hand side of the loom as seen looking from the front thereof.
  • This housing is indicated generally by numeral and although the right-hand housing is not illustrated it is to be understood that it is of similar construction and the cooling device to be more fully described subsequently also functions in a like manner at that end of the loom.
  • the tape wheel housing 10 is provided with an integrally formed mounting bracket 11 which serves as a means for attaching it to the lefthand loomside (not shown).
  • a tape wheel generally indicated by numeral 12 is mounted for oscillating movement in the housing 10 and is supported by a centrally disposed stud 13 that is driven in a manner fully described in the aforementioned patents.
  • This tape Wheel includes a hub portion 141, a plurality of integrally formed and radially directed spoke members 15 which extend from said hub and terminate with a rim 16.
  • a carrier inserting member or flexible tape 17 has one end thereof fixedly attached to the rim or outer periphery of the tape wheel by means of a bolt 18 and a nut 19.
  • a plurality of arcuated tape restraining shoes 20 are adjustably attached to the housing 10 adjacent its outer edge and in close proximity with the outer periphery of the tape wheel for substantially its circumferential extent.
  • the clearance between the inner surface of the tape restraining shoes 20 and the rim of the tape wheel is of a distance sufficient to permit the flexible tape 17 to be wrapped about and extended from said rim as said wheel is caused to oscillate.
  • a housing cover 21 attaches to the outer and forward edge of the housing 10 by means of forwardly extending stud member 22 and nuts 22 and to illustrate clearly the various components within the housing, a large portion of said cover is broken away and is shown as being made from a transparent material.
  • This cover encloses the oscillating tape wheel and tape restraining shoes within the housing 10 and serves to prevent the accumulation of dust and lint from interfering with the parts therein as well as a safety feature for preventing any possible interference with said oscillating tape wheel.
  • the flexible tape cooling device includes a plurality of air circulating vane members which are depicted generally in FIG. 1 by numeral 23. These vane members are angularly formed having a first surface 24 which includes an aperture 25 (FIG. 2) through which a cap screw 26 is adapted to pass for mounting said members on the spokes 15 immediately adjacent to the rim 16 of the wheel. A second surface 27 in continuation of surface 24 and extending obliquely from the latter is so disposed as to cause a positive circulation of air in the direction of the restraining shoes 20, the rim 16 of the wheel and around the tape itself attached to said rim as said wheel moves in that direction to unwind said tape.
  • the housing 10 is provided with a plurality of openings or ports which are so positioned that the positive air circulation by the vane members causes air to be drawn into the housing through certain ports and the warmer air to be expelled through others.
  • Numeral 28 depicts those openings which serve as intake ports and numeral 29 identifies those ports through which the warmer air is expelled.
  • FIG. 3 shows a modified means of circulating the air within the tape wheel housing It and includes air intake ports 28' which by means of the vanes 23 on the oscillating tape wheel 12 draw air into said housing as shown by the indicating arrows A.
  • the vanes are disposed on the spokes 15 of the wheel so as to direct the air outwardly toward the rim thereof to effect cooling of the tape 17 and the tape restraining shoes 20.
  • a housing cover 21 attaches to the housing 10 in the same manner as the cover shown in FIG. 1; however, the outside diameter of cover 21' is somewhat larger than cover 21 and defines a circumferential opening 29' between the outer periph- 4 cry of the housing It) and said cover 21. This circumferential opening 29 serves as an air outlet port and permits the air being circulated by the vane members to escape as illustrated by the indicating arrows B.
  • the flexible tapes are alternately wound upon and unwound from the rims of the tape wheels which are caused to oscillate throughout slightly less than a full revolution.
  • These flexible tapes are in pressing contact with the wheels rim when being wound on the latter as it is withdrawn from the shed and when being unwound or inserted into the shed, the arcuated shoe members 20 serve to hold said tape radially inwardly in close proximity with said rim.
  • the pitch of the vane members which move with the wheel is such that they influence the air within the housing and direct it in a positive manner toward the restraining shoes, the wheels rim and the flexible tape to effect a substantial cooling of these elements.
  • a significant advantage derived from this means of reducing the accumulation of frictional heat is that of being able to maintain closer tolerances between the inner surfaces of the tape restraining shoes and the rim of the wheel thereby providing further control of said tape and a smoother operating condition.
  • vane members are shown to be of a specific configuration and as being attached to the spokes of the tape wheel, they may, of course, be varied as to their form and shape so long as the desired circulation of air is brought about, and they may further be formed integrally with the spokes, if desired.
  • a shuttleless loom of the type having means for inserting filling from a stationary supply which includes a wheel having a tape-supporting rim, said wheel being rotatably supported for oscillation of less than one full revolution, a flexible tape attached to and adapted to be wrapped about and extended from said rim, a plurality of arcuated shoes members disposed in spaced relation and in close proximity with said rim, a housing within which said wheel is mounted for oscillating movement, said housing having a plurality of air-ventilating intake ports radially disposed relative to the hub of said wheel, a housing cover removably fixed to overlie the outer periphery of said housing defining a circumferential opening therebetween, and a plurality of circumferentially arranged vane members fixedly attached to said wheel inwardly of said rim, each one of said vanes being angularly disposed for directing intermittent circulating streams of air about said tape and toward said circumferential opening with each oscillating movement of said wheel.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US443475A 1965-03-29 1965-03-29 Weft inserting mechanism Expired - Lifetime US3323555A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US443475A US3323555A (en) 1965-03-29 1965-03-29 Weft inserting mechanism
CH198766A CH444779A (de) 1965-03-29 1966-02-11 Kühleinrichtung für die zum Schusseintrag dienenden Bandelemente einer schützenlosen Webmaschine
DE19661535371 DE1535371B1 (de) 1965-03-29 1966-02-18 Kuehleinrichtung fuer biegsame,eine Greifeinrichtung tragende Metallbaender bei Webmaschinen mit Entnahme des Schussfadens von ortsfest angeordneten Vorratsspulen
GB13671/66A GB1074727A (en) 1965-03-29 1966-03-28 Cooling means for the tapes and tape guiding means of a shuttleless loom
BE678540D BE678540A (Direct) 1965-03-29 1966-03-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443475A US3323555A (en) 1965-03-29 1965-03-29 Weft inserting mechanism

Publications (1)

Publication Number Publication Date
US3323555A true US3323555A (en) 1967-06-06

Family

ID=23760937

Family Applications (1)

Application Number Title Priority Date Filing Date
US443475A Expired - Lifetime US3323555A (en) 1965-03-29 1965-03-29 Weft inserting mechanism

Country Status (5)

Country Link
US (1) US3323555A (Direct)
BE (1) BE678540A (Direct)
CH (1) CH444779A (Direct)
DE (1) DE1535371B1 (Direct)
GB (1) GB1074727A (Direct)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987822A (en) * 1974-03-11 1976-10-26 Ruti Machinery Works Ltd. Band wheel on a shuttleless loom
US4570684A (en) * 1984-04-30 1986-02-18 Draper Corporation Tape restraining shoe for shuttleless looms

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205975A (en) * 1934-02-19 1940-06-25 Us Electrical Motors Inc Ventilated variable speed power unit
US2230575A (en) * 1937-06-11 1941-02-04 Us Electrical Motors Inc Transmission mechanism
US2810403A (en) * 1956-07-26 1957-10-22 Draper Corp Shuttleless loom
US2893253A (en) * 1956-09-27 1959-07-07 Preco Inc Variable pitch pulley mechanism
US3159184A (en) * 1962-11-13 1964-12-01 Draper Corp Tape motion for shuttleless looms
US3175587A (en) * 1963-08-02 1965-03-30 Draper Corp Tape motion for shuttleless looms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB693485A (en) * 1949-01-19 1953-07-01 Draper Corp Improvements in or relating to looms and method of weaving
DE826274C (de) * 1949-01-19 1951-12-27 Draper Corp Verfahren zum mehrschuessigen Einsetzen von Schussfaeden in die Kettenfaedenfaecher und schuetzenloser Webstuhl zur Durchfuehrung dieses Verfahrens
CH287531A (fr) * 1949-01-19 1952-12-15 Draper Corp Procédé de tissage et métier pour la mise en oeuvre de ce procédé.
US2604123A (en) * 1949-01-19 1952-07-22 Draper Corp Loom and method of weaving

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205975A (en) * 1934-02-19 1940-06-25 Us Electrical Motors Inc Ventilated variable speed power unit
US2230575A (en) * 1937-06-11 1941-02-04 Us Electrical Motors Inc Transmission mechanism
US2810403A (en) * 1956-07-26 1957-10-22 Draper Corp Shuttleless loom
US2893253A (en) * 1956-09-27 1959-07-07 Preco Inc Variable pitch pulley mechanism
US3159184A (en) * 1962-11-13 1964-12-01 Draper Corp Tape motion for shuttleless looms
US3175587A (en) * 1963-08-02 1965-03-30 Draper Corp Tape motion for shuttleless looms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987822A (en) * 1974-03-11 1976-10-26 Ruti Machinery Works Ltd. Band wheel on a shuttleless loom
US4570684A (en) * 1984-04-30 1986-02-18 Draper Corporation Tape restraining shoe for shuttleless looms

Also Published As

Publication number Publication date
DE1535371B1 (de) 1972-05-04
CH444779A (de) 1967-09-30
BE678540A (Direct) 1966-09-01
GB1074727A (en) 1967-07-05

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AS Assignment

Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020

Effective date: 19820321

Owner name: DRAPER CORPORATION,

Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735

Effective date: 19820920

AS Assignment

Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE

Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533

Effective date: 19821021

AS Assignment

Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583

Effective date: 19860331