US2442796A - Thread tensioning means - Google Patents

Thread tensioning means Download PDF

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Publication number
US2442796A
US2442796A US702511A US70251146A US2442796A US 2442796 A US2442796 A US 2442796A US 702511 A US702511 A US 702511A US 70251146 A US70251146 A US 70251146A US 2442796 A US2442796 A US 2442796A
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Prior art keywords
thread
rod
plate
bar
shaft
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Expired - Lifetime
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US702511A
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Young George Ostrom
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VF Corp
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VF Corp
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B27/00Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind

Definitions

  • My invention relates to knitting machines and it has for-its. object to provide .a .noveLsimple, resilient thread tensionin'g device over which the thread from the beam passesto the thread guides.
  • a further object is to provide a means for mounting the guide so that it may be adjusted-to increase or decrease the tensionon the thread as may befound desirable.
  • Fig. 1 is a cross section of a portion of a knitting machine embodying my invention
  • Fig. 2 is a perspective view of one end of the device.
  • Fig. 3 is a side elevation of the invention, looking in the direction of the arrow in Fig. 2.
  • Fig. 4 is an elevation and part section of another embodiment of the invention.
  • Fig. 5 is a cross section on the line 5-5 of Fig. 4 looking in the direction of the arrows.
  • Fig. 6 is a section on theline 55 of Fig. 4 looking in the direction opposite to Fig. 5.
  • the thread guide I24 is mounted on a thread guide bar l2l which is attached to the threadguide-bar-carrying arm 10. able along a collar 68 of a fixed shaft 66 but is prevented from turning on the collar by means of grooves and splines 69.
  • I41 designates a hollow shaft which connects the end and intermediate frames 16 together.
  • the roller 93 hereinbefore referred to has its The arm I0 is mov- 2 shaft 94 journalled in the short arm of ;a bell crank-lever 89, the -long arm of which has a roller '1 l 5 that is-held--to engage a-cam I I3 by means of a spri-ngi H;
  • the cam 1 I3 is mounted on a suitably driven rotatable shaft 55:
  • the shaft "55 has an eccentric-"56 for-the--strap;-58 whose, arm -51 -is pivoted-at 59 tea-rod 5
  • the -rod-5l has a head*52-that-carries--a sinker-nib bar -53 "on which a -sinker nib St-is mounted to cooperate with the fixedly mounted sinker 49 that isattached to a fixed sinkerbar 48.
  • the 20 is a vertically reciprocal shaft or rod which has a head 2
  • the rod 21 carries a tongue bar 26 on which the needle-hook-closing tongue 33 is mounted.
  • the needle 24 is mounted on the needle bar 22.
  • the rod 21 is spring-pressed against a fixed cam 32 which is mounted on a bar 3
  • the rod I3 which carries the resilient plate 15 has an end I3 mounted eccentrically in a socket 13 or a rotatable body 13 whose threaded stud l3 passes through a bearing hole in the frame w and carries a clamp nut (-3 and a squared wrench-receiving portion 13
  • the end 13* is held from turning in the socket 13 by a key 13 and set screw 13
  • the plate i5 in this embodiment is curved about the shaft 13 and has one edge fastened to the shaft by screws 15 The thread passes over the plate I5 as indicated by the broken line T in Fig.
  • the rod 73 with plate l5 may be mounted in the body 13 in lieu of the rod '13 if desired.
  • a knitting machine having a beam and thread guides
  • the improvement which comprises a resilient thread-tensioning plate rigidly mounted at one longitudinal side and free at the other end over which the thread from the beam passes to the thread guides, said plate extending over the full operating width of the machine, said resilient tension plate being mounted on a rod which in turn is carried by a body jou-rnalled eccentrically with respect to said rod and having means to hold said rod and plate in any desired adjusted position.
  • the improvement which comprises a fixed rod, a resilient thread-tensioning plate mounted along one of its longitudinal edges on said rod and having its other longitudinal edge curved around said rod and spaced from the same, the thread from the beam let-01f mechanism passing over said other longitudinal edge to the thread guide.
  • a knitting machine having a beam and a thread guide
  • the improvement which includes a body having a rotatably adjustably mounted stud and an eccentric socket, arod secured in said socket and a thread tensioning plate secured adjacent one longitudinal edge to said rod.
  • a knitting machine having a beam and a thread guide
  • the improvement which includes a body having a rotatably adjustably mounted stud and an eccentric socket, a rod secured in said socket and a thread tensioning plate secured adjacent one longitudinal edge to said rod and curved about and spaced from said rod save where it is secured to the rod.

Description

June 8, 1948. G. o. YOUNG iTHREAD TENSIONING MEANS Filed (kit. 10, 1946 7 v 5/ i" 3/ 1/5 1/3 5; f0 2621 IN V EN TOR,
leor e 0 'Vouny,
ATTORNEY.
Patented June 8, 1948 "BEES PATENT OFFICEIY 2,442,796 THREAD. TENSIONINGTMEAN S Application October 10, 1946, scriaLNoi 702,511
4 Claims;
My invention relates to knitting machines and it has for-its. object to provide .a .noveLsimple, resilient thread tensionin'g device over which the thread from the beam passesto the thread guides.
A further object is to provide a means for mounting the guide so that it may be adjusted-to increase or decrease the tensionon the thread as may befound desirable.
To the attainment of the aforesaid object, the invention resides in the novel"construction com bination "and arrangement ofparts which will first be fully described and then be specifically pointed out in the appended claims, reference being had to the accompanying drawin in which:
Fig. 1 is a cross section of a portion of a knitting machine embodying my invention,
Fig. 2 is a perspective view of one end of the device.
Fig. 3 is a side elevation of the invention, looking in the direction of the arrow in Fig. 2.
Fig. 4 is an elevation and part section of another embodiment of the invention.
Fig. 5 is a cross section on the line 5-5 of Fig. 4 looking in the direction of the arrows.
Fig. 6 is a section on theline 55 of Fig. 4 looking in the direction opposite to Fig. 5.
In the drawing in which like numerals and letters of reference indicate like parts in all the figures, the reference numerals used to indicate the several parts of the machine are the same as those used to designate the same parts shown in the drawings of my application for patent on a knitting machine, filed October 15, 1945, Serial Number 622,321, of which application the present application is a continuation in part.
In the drawing I6 designates one of the cross frames of the machine; 8| designates a beam shaft, 80 a beam and T the thread. The thread from the beam passes around a roller 93 on a shaft 94 and from the roller the thread passes over a bar l2l. The bar is fixed. From the bar the thread passes over the curved edge 15 of a thin resilient plate 15 The plate 153 along its edge opposite the curved edge is securely mounted on a fixed rod 13. Passing over the curved edge 15 the thread goes to the thread guide I24.
The thread guide I24 is mounted on a thread guide bar l2l which is attached to the threadguide-bar-carrying arm 10. able along a collar 68 of a fixed shaft 66 but is prevented from turning on the collar by means of grooves and splines 69.
I41 designates a hollow shaft which connects the end and intermediate frames 16 together.
The roller 93 hereinbefore referred to has its The arm I0 is mov- 2 shaft 94 journalled in the short arm of ;a bell crank-lever 89, the -long arm of which has a roller '1 l 5 that is-held--to engage a-cam I I3 by means of a spri-ngi H; The cam 1 I3 is mounted on a suitably driven rotatable shaft 55: The shaft "55 has an eccentric-"56 for-the--strap;-58 whose, arm -51 -is pivoted-at 59 tea-rod 5|- that reciprocates pina -beari-ng-bore in -a.--fixedshaft 50.: The -rod-5l has a head*52-that-carries--a sinker-nib bar -53 "on which a -sinker nib St-is mounted to cooperate with the fixedly mounted sinker 49 that isattached to a fixed sinkerbar 48.
20 is a vertically reciprocal shaft or rod which has a head 2| on which a needle bar 22 is fixedly secured and in which a rod 21 is reciprocally mounted. The rod 21 carries a tongue bar 26 on which the needle-hook-closing tongue 33 is mounted. The needle 24 is mounted on the needle bar 22. The rod 21 is spring-pressed against a fixed cam 32 which is mounted on a bar 3| and operates the hook closing tongue as the rod 20 1 works up and down to open and close respectively the needle hook.
From the thread guide I24 the thread passes to the needle while the knit fabric passes over a roller H8 to a winding up roller (not shown).
The rotation of the shaft 55 and the reciprocations of the rod 20 are timed to effect knitting operations during which the thread T is let off the beam by the action of the cam H3 on the roller I I5, the resilient plate l5 taking the place of the usual spring-loaded tension rods heretofore employed in tricot machines to take care of slight variations in the thread tensions.
By using a single plate 15 the use of a spring tensioned rod is avoided and a more uniform action is provided for than can be had by a pivoted tension bar such as heretofore used.
In the embodiment shown in Figs. 4 to 6 inclusive, the rod I3 which carries the resilient plate 15 has an end I3 mounted eccentrically in a socket 13 or a rotatable body 13 whose threaded stud l3 passes through a bearing hole in the frame w and carries a clamp nut (-3 and a squared wrench-receiving portion 13 The end 13* is held from turning in the socket 13 by a key 13 and set screw 13 The plate i5 in this embodiment is curved about the shaft 13 and has one edge fastened to the shaft by screws 15 The thread passes over the plate I5 as indicated by the broken line T in Fig. 6, and the arrangement is such that as the stud 13 is turned the rod 13 will be swung about the axis of the lug I3 and the amount of tension on the thread itself will be increased or decreased depending upon the point of contact with the thread on the curved plate. Due to the eccentric arrangement, the angle from the end of the tension plate to the hole in the thread guide (not shown) will remain approximately the same, which is very important in some cases. The rod 73 with plate l5 may be mounted in the body 13 in lieu of the rod '13 if desired.
In this application I make no claim to the mechanism shown in Fig. 1 other than the elements 13, 15, 15 as such constitute in general the subject matter of my original application, Serial Number 622,321, aforesaid.
From the foregoing description taken in connection with the accompanying drawing it is believed my invention and its advantages will be readily understood by those skilled in the art.
What I claim is:
1. In a knitting machine having a beam and thread guides, the improvement which comprises a resilient thread-tensioning plate rigidly mounted at one longitudinal side and free at the other end over which the thread from the beam passes to the thread guides, said plate extending over the full operating width of the machine, said resilient tension plate being mounted on a rod which in turn is carried by a body jou-rnalled eccentrically with respect to said rod and having means to hold said rod and plate in any desired adjusted position.
2. In a knitting machine having a beam, thread Number.
4 guide and thread let-ofl mechanism, the improvement which comprises a fixed rod, a resilient thread-tensioning plate mounted along one of its longitudinal edges on said rod and having its other longitudinal edge curved around said rod and spaced from the same, the thread from the beam let-01f mechanism passing over said other longitudinal edge to the thread guide.
3. In a knitting machine having a beam and a thread guide, the improvement which includes a body having a rotatably adjustably mounted stud and an eccentric socket, arod secured in said socket and a thread tensioning plate secured adjacent one longitudinal edge to said rod.
4. In a knitting machine having a beam and a thread guide, the improvement which includes a body having a rotatably adjustably mounted stud and an eccentric socket, a rod secured in said socket and a thread tensioning plate secured adjacent one longitudinal edge to said rod and curved about and spaced from said rod save where it is secured to the rod.
GEORGE OSTROM YOUNG.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Name Date 2,308,430 Bolden et a1. Jan. 12, 1943
US702511A 1946-10-10 1946-10-10 Thread tensioning means Expired - Lifetime US2442796A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603240A (en) * 1952-07-15 Tensioning device for the warp
US2667772A (en) * 1951-08-14 1954-02-02 Alfred Hofmann & Co Auxiliary yarn tensioning means
US2686411A (en) * 1952-09-20 1954-08-17 Liebrandt Warp knitting machine with threadseparating means
US3063272A (en) * 1957-02-11 1962-11-13 A W Swann And Company Ltd Methods of producing warp knitted fabrics
US3186441A (en) * 1962-05-14 1965-06-01 Southern Machinery Co Tension bar bearing for looms
US3444707A (en) * 1967-09-07 1969-05-20 Burlington Industries Inc Warp knit fabric containing loose filling and having unfrayed selvage
US3541812A (en) * 1968-10-29 1970-11-24 Burlington Industries Inc Warp knit fabric containing loose filling and having unfrayed selvage and method and apparatus for making the same
US3597940A (en) * 1969-06-23 1971-08-10 Crompton & Knowles Corp Yarn tension control means for warp-knitting machine
US3631689A (en) * 1970-05-07 1972-01-04 Travis Mills Corp Yarn-tensioning means for warp-knitting machines
US3871419A (en) * 1971-12-10 1975-03-18 Sulzer Ag Deflecting beam for warp threads in a weaving machine
FR2363657A1 (en) * 1976-08-13 1978-03-31 Saurer Ag Adolph CHAIN TENSION COMPENSATION DEVICE IN A WEAVING Loom
EP1172471A1 (en) * 2000-07-10 2002-01-16 Sulzer Textil AG Pile warp tensioning bar
CN101748552B (en) * 2008-12-08 2011-11-16 株式会社丰田自动织机 Pile fabric loom having pile warp tension adjuster

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2308430A (en) * 1941-07-12 1943-01-12 Fnf Ltd Warp tension bar for textile machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2308430A (en) * 1941-07-12 1943-01-12 Fnf Ltd Warp tension bar for textile machines

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603240A (en) * 1952-07-15 Tensioning device for the warp
US2667772A (en) * 1951-08-14 1954-02-02 Alfred Hofmann & Co Auxiliary yarn tensioning means
US2686411A (en) * 1952-09-20 1954-08-17 Liebrandt Warp knitting machine with threadseparating means
US3063272A (en) * 1957-02-11 1962-11-13 A W Swann And Company Ltd Methods of producing warp knitted fabrics
US3186441A (en) * 1962-05-14 1965-06-01 Southern Machinery Co Tension bar bearing for looms
US3444707A (en) * 1967-09-07 1969-05-20 Burlington Industries Inc Warp knit fabric containing loose filling and having unfrayed selvage
US3541812A (en) * 1968-10-29 1970-11-24 Burlington Industries Inc Warp knit fabric containing loose filling and having unfrayed selvage and method and apparatus for making the same
US3597940A (en) * 1969-06-23 1971-08-10 Crompton & Knowles Corp Yarn tension control means for warp-knitting machine
US3631689A (en) * 1970-05-07 1972-01-04 Travis Mills Corp Yarn-tensioning means for warp-knitting machines
US3871419A (en) * 1971-12-10 1975-03-18 Sulzer Ag Deflecting beam for warp threads in a weaving machine
FR2363657A1 (en) * 1976-08-13 1978-03-31 Saurer Ag Adolph CHAIN TENSION COMPENSATION DEVICE IN A WEAVING Loom
US4121625A (en) * 1976-08-13 1978-10-24 Adolph Saurer Device for equalizing the warp yarn tension in a loom
EP1172471A1 (en) * 2000-07-10 2002-01-16 Sulzer Textil AG Pile warp tensioning bar
CN101748552B (en) * 2008-12-08 2011-11-16 株式会社丰田自动织机 Pile fabric loom having pile warp tension adjuster

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