US2948931A - Thick and thin yarn producing apparatus - Google Patents
Thick and thin yarn producing apparatus Download PDFInfo
- Publication number
- US2948931A US2948931A US695035A US69503557A US2948931A US 2948931 A US2948931 A US 2948931A US 695035 A US695035 A US 695035A US 69503557 A US69503557 A US 69503557A US 2948931 A US2948931 A US 2948931A
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- US
- United States
- Prior art keywords
- thick
- frame
- cam
- thin
- sliver
- 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
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-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
- D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
Definitions
- the present invention relates to an apparatus for producing a thick and thin spun yarn having a prearranged thick-thin pattern.
- the invention relates to mechanism combined with the well-known Casablancatype drafting or spinning assembly for producing thickthin spun yarn.
- thick-thin yarns I mean that type of yarn which has alternating thick and thin portions occurring axially of the yarn. These yarns are used principally to produce decorative and novel type fabrics.
- a further object of my invention is to provide an improved and novel apparatus for producing a thick and thin spun yarn wherein the thick and thin pattern may be altered as desired and which pattern may be prearranged or set up prior to the spinning operation.
- Still another object of my invention is to provide a novel and improved mechanism for producing thick and thin yarn of the spun type wherein the entire mechanism is supported on a spinning frame beneath the apron cradle of the usual Casablanca-type spinning apparatus whereby it does not interfere with the attending operator.
- Figure 1 is a somewhat diagrammatic side view of my thick and thin yarn-producing assembly
- Figure 2 is an enlarged detail of .a portion of the assembly shown in Figure 1.
- the Casablanca-type spinning frame is well known to anyone skilled in the art. Generally, it includes a pair of feed rolls 1, 1 through which a fiber sliver 2 is fed to the assembly, and a pair of delivery rolls 3, 3 which are rotated at a faster rate of rotation than the feed rolls and from which the drafted sliver is delivered to and through a guide, such as the pigtail guide 5 shown in the drawing, to a twisting apparatus (not shown) by which the sliver is twisted to impart strength to the yarn.
- a guide such as the pigtail guide 5 shown in the drawing
- apron-type cradle which consists of a pair of driven belts 7, 7 positioned one above the other to provide a nip area through which-the sliver travels.
- the belts 7, 7 are supported on drive rollers 9, 9 of larger diameter at one end of the cradle and rollers 9', 9 of smaller diameter at the opposite end. These units are supported in a frame 13, the exit end of which is capable of slight vertical reciprocation. The mounting for the frame 13 is not shown in the drawing.
- One purpose of the apron-type cradle is to maintain the fibers in alignment as the sliver is being drafted.
- a cam follower 11 preferably in the form of a small roller, is journaled to a frame 10 affixed to the bottom of each frame 13 supporting the apron assembly.
- the followers 11 are positioned at the exit ends of the frames.
- a rotatable eccentric cam 15 Positioned immediately below each of the followers 11, 11 is a rotatable eccentric cam 15 which has a high point 16 which terminates abruptly to permit the cam follower 11 and frame 13 to drop to the low point or dwell point of the cam 15 with a sudden drop motion.
- the cams 15, .15 (see Figure 2) are driven by a drive shaft 18.
- the high spots 16, 16 of the cams are out of alignment or staggered with respect to one another whereby the frames 13 are raised and lowered in nonuniform or alternating pattern for a purpose to be hereinafter explained.
- variable speed driven mechanism such as the one shown in Figure 2 and generally identified by reference numeral 20.v
- Variable drive speed mechanisms other than the one: shown, may be satisfactorily used.
- the vari-- able drive unit 20 consists of a pair of variable pulley assemblies 22, 23. Each pulley assembly 22, 23 con-- sists of two tapering flanged members 31, 3.1. Theflanged members 31, 31' of the upper pulley assembly 23- are supported on the drive shaft 18 for the cams 15, 15 while the flanged members of the lower pulley assembly 22 are supported on a drive shaft 32 extending from a drive motor 32'.
- a drive belt B connects the lower pulley assembly 22 with the upper pulley assembly 23.
- the lower flange member 31 is anchored or fixed to the motor drive shaft 32, and the upper flanged member 31 is anchored or fixed to the drive shaft 18.
- the upper and lower flanged members 31, 31 are, on the other hand, slidingly supported upon the shafts 18 and 32 and are held in nonrotative relationship with the shafts by splines 33 extending from each shaft.
- An expansion spring 35 is supported upon each shaft to lie between each pair of flanged members 31, 3-1 to urge the members away or apart from one another.
- a slip ring 37 is also supported over each shaft 18 and 32, and lies between the slidable flanged member 31' on each shaft and an arm 39 of a bifurcated lever 41 which is pivotally mounted at its point of bifurcation to a sup.- port 43.
- a cam follower 45 preferably in the form of a roller, is journaled in a bracket support '47 at the free end of the lever 41.
- Cooperating with the cam follower 45 is an eccentric cam 49 which is secured to the motor; drive shaft 32.
- the motor 32 drives the shaft 32 to rotate: the eccentric cam 49.
- the cam follower 45 rises and falls in accordance with the eccentric pattern of the track of the cam 49 to rock or reciprocally pivot the lever 41 which moves each arm 39 of the lever alternately toward and away from the flanged members 31, 31' of the upper and lower pulley assemblies.
- the member 31' When the arm 39 is moved against the flanged member- 31 of the lower pulley assembly 22, the member 31' is, in turn, urged toward the member 31 compressing the spring 35 as it so moves.
- the upper arm 39 will, at the same time, move away from the flanged member 31 of the upper. pulley assembly 23.
- the compression spring 3 expands at the same time to urge the flanged member 31' away from the flanged member 31.
- Cams 15, 15 supported on shaft 18 thereby rotate at varying speed to raise and lower the frames 13, 13 while the fiber sliver 2 passes between the nipping belts 7, 7 rotatably supported by the frames 13, 13.
- the thick portions are produced in the sliver as the cam followers 11, 11 journaled to the frames 13, 13 drop from the high spots 16, 16 of the cams 15, 15 to the low or dwell points of the cams 15, 15.
- the frames 13, 13 drop with a sudden motion.
- the camming action of the earns 15, 15 serves to gradually raise the frames 13, 13 until the high spots are passed at which time the frames suddenly drop in their downwardly path.
- a corresponding release of tension occurs in the sliver traveling through the belts 7, 7 and the fibers tend to bunch-up at this point to provide the thicker portions of the sliver which are carried into the final twisted spun yarn.
- the reason for staggering the high spots 16 of the cams 15 is so that the thick portions set up in the plurality of slivers being separately but simultaneously drafted or spun will be staggered with respect to each yarn.
- the alternating rising and dropping of the frames will prevent excessive vibration from being set up along the en tire spinning apparatus.
- variable speed drive 20 will alternately slow down and speed up the shaft 18 to uniformly vary the thick and thin pattern set up axially in each yarn being drafted or spun. This pattern may be altered as desired by changing the pattern or tract of the eccentric cam 49. To accomplish this change, the variable speed drive mechanism 20 is merely slid 01f the shafts 18 and 32 after which the cam 49 may be replaced with a cam of different eccentricity. When the yarns are incorporated into fabrics, the fabric producer will then be assured that the thick portions of the yarns will appear in random pattern throughout the fabric rather than in uniform side-by-side alignment which pattern will completely destroy the novel eflfect desired.
- Apparatus for producing a thick and thin spun type yarn according to a prearranged thick-thin pattern comprising a fiber sliver drafting or spinning assembly of the Casablanca type including sliver nipping belts supported for rotation in a frame the exit end of said frame being capable of slight vertical reciprocation, and a cam assembly which cooperates with the exit end of the frame to vertically reciprocate the exit end of the frame, said cam assembly including a rotating cam having an abruptly terminating high spot which causes the exit end of the frame to drop suddenly on its downward path.
- Apparatus for producing a thick and thin spun yarn comprising a fiber sliver drafting or spinning assembly of the Casablanca type including sliver nipping belts supported for rotation in a frame the exit end of said frame being capable of slight vertical reciprocation, a cam follower secured to the underside of the exit end of the frame, a rotatable eccentric cam which cooperates with the cam follower to vertically reciprocate the exit end of the frame, an abruptly terminating high spot on said cam which causes the exit end of the frame to drop suddenly on its down- W'ardpath.
- Apparatus for producing a thick and thin spun yarn according to a prearranged pattern comprising a Oasablanca-type spinning assembly including sliver nipping belts supported for rotation in a frame the exit end of which is capable of slight vertical reciprocation, a cam follower secured to the bottom of the frame at the exit end thereof, a drive shaft supported for rotation below the cam follower secured to the frame, a rotatable eccentric cam secured to the shaft so that it cooperates with the cam follower of the frame, an abruptly terminating high spot on said cam which causes the exit end of the frame to drop suddenly on its downward path, and variable speed drive means connected with the drive shaft for the cam.
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US695035A US2948931A (en) | 1957-11-07 | 1957-11-07 | Thick and thin yarn producing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US695035A US2948931A (en) | 1957-11-07 | 1957-11-07 | Thick and thin yarn producing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US2948931A true US2948931A (en) | 1960-08-16 |
Family
ID=24791284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US695035A Expired - Lifetime US2948931A (en) | 1957-11-07 | 1957-11-07 | Thick and thin yarn producing apparatus |
Country Status (1)
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US (1) | US2948931A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3363815A (en) * | 1965-06-08 | 1968-01-16 | Elitex Zavody Textilniho | Yarn feeding system for circular multifeed knitting machines |
US3451208A (en) * | 1966-08-04 | 1969-06-24 | Ici Ltd | Collection of yarns by over-end winding |
US3844098A (en) * | 1972-04-12 | 1974-10-29 | Commw Scient Ind Res Org | Apparatus and method for the manufacture of twisted and plied yarn |
US4775088A (en) * | 1986-06-13 | 1988-10-04 | Fuji Machinery Company, Ltd. | Intermittent web feeding apparatus |
US4926626A (en) * | 1988-06-09 | 1990-05-22 | N I T I "Veda" | Flamme fancy yarn manufacturing method and apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2675585A (en) * | 1947-03-31 | 1954-04-20 | Rieter Joh Jacob & Cie Ag | Drawing apparatus for textile fiber preparation |
US2689382A (en) * | 1949-03-19 | 1954-09-21 | Bachmann Uxbridge Worsted Corp | Vertical apron drafter |
US2695428A (en) * | 1948-07-10 | 1954-11-30 | Rieter Joh Jacob & Cie Ag | Mechanism for drawing roving of different staple lengths |
-
1957
- 1957-11-07 US US695035A patent/US2948931A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2675585A (en) * | 1947-03-31 | 1954-04-20 | Rieter Joh Jacob & Cie Ag | Drawing apparatus for textile fiber preparation |
US2695428A (en) * | 1948-07-10 | 1954-11-30 | Rieter Joh Jacob & Cie Ag | Mechanism for drawing roving of different staple lengths |
US2689382A (en) * | 1949-03-19 | 1954-09-21 | Bachmann Uxbridge Worsted Corp | Vertical apron drafter |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3363815A (en) * | 1965-06-08 | 1968-01-16 | Elitex Zavody Textilniho | Yarn feeding system for circular multifeed knitting machines |
US3451208A (en) * | 1966-08-04 | 1969-06-24 | Ici Ltd | Collection of yarns by over-end winding |
US3844098A (en) * | 1972-04-12 | 1974-10-29 | Commw Scient Ind Res Org | Apparatus and method for the manufacture of twisted and plied yarn |
US4775088A (en) * | 1986-06-13 | 1988-10-04 | Fuji Machinery Company, Ltd. | Intermittent web feeding apparatus |
US4926626A (en) * | 1988-06-09 | 1990-05-22 | N I T I "Veda" | Flamme fancy yarn manufacturing method and apparatus |
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Owner name: KELLOGG CREDIT CORPORATION A DE CORP. Free format text: AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:WALTER E. HELLER & COMPANY, INC. A NY CORP.;ITT RAYONIER INCORPORATED, A DE CORP.;AVTEX FIBERS INC., A NY CORP.;REEL/FRAME:003959/0350 Effective date: 19800326 Owner name: BALBOA INSURANCE COMPANY C/O THE PAUL REVERE EQUIT Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: NEW ENGLAND MUTUAL LIFE INSURANCE COMPANY 501 BOYL Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: PAUL REVERE LIFE INSURANCE COMPANY THE C/O THE PAU Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. Free format text: AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y.;AVTEX FIBERS, INC, A CORP. OF NY;KELLOGG CREDIT CORP., A CORP. OF DEL.;REEL/FRAME:003959/0250 Effective date: 19800326 Owner name: JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY JOHN HA Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: WESTERN AND SOUTHERN LIFE INSURANCE COMPANY THE C/ Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 Owner name: PROVIDENT ALLIANCE LIFE INSURANCE COMPANY C/O THE Free format text: AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED.;ASSIGNOR:AVTEX FIBERS INC. A NY CORP.;REEL/FRAME:003959/0219 Effective date: 19810301 |