US2763445A

US2763445A - Adjustable yarn guide

Info

Publication number: US2763445A
Application number: US414697A
Authority: US
Inventors: Richard G Hilbert
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1954-03-08
Filing date: 1954-03-08
Publication date: 1956-09-18
Anticipated expiration: 1973-09-18

Description

P 1956 R. G. HILBERT ADJUSTABLE YARN'GUIDE Filed March 8. 1954 INVENTOR.

RICHARD G. HIL BERT m ATTORNEY 2,763,445 Patented Sept. 18, 1956 ADJUSTABLE YARN GUIDE Richard G. Hilbert, Smithfield, R. L, assignor to Universal Winding Company, Cran'ston, R. I., a corporation of Massachusetts Application March 8, 1954, Serial No. 414,697

9 Claims. (Cl. 242-l57) The present invention relates to yarn guides for winding machines and more particularly pertains to such a yarn guide and means for adjustably mounting it upon a reciprocating member in the winding machine.

One type of winding machine commonly used in the textile industry comprises an elongated frame upon which a plurality of bobbins or spools are rotatably mounted to simultaneously wind a plurality of strands of yarn. A single traverse bar reciprocates longitudinally of the frame adjacent the rotating bobbins and carries yarn guides to traverse the winding yarn thereon. In this type machine, the bobbins or spools are customarily mounted between pivoted arms which usually are spring urged together to grip the flanges of said bobbins or spools or to hold gudgeons carried thereby in the axial bore of said bobbins or spools. It frequently happens that the bobbins employed vary to some degree or other in their dimensions. As for example, the thickness of the flanges at each end may vary somewhat and also after periods of use the flanges sometimes become slightly distorted due to yarn pressure. Because of these variations in dimensions, bobbins positioned in this type winding machine will vary in their location, when. gripped in their bobbin hangers, relative to the reciprocating yarn guide. That is to say, the yarn carrying portion of the bobbin may be displaced longitudinally a slight distance one Way or another from the position the revious bobbin assumed. Such displacement has a deleterious effect upon the package wound upon a bobbin thus displaced inasmuch as the yarn will pile up along one flange and will tend to be spaced away from the opposite flange.

Prior to the present invention no simple and fast method of centering the yarn guide with respect to a bobbin was available. When a non-uniform bobbin was encountered it was necessary to stop the winding machine, thus idling a plurality of spindles that are operating satisfactorily, while the yarn guide associated with the displaced bobbin was loosened and moved slightly along the traverse bar and retightened. Obviously, unless the first adjustment successfully centered the yarn guide, the process had to be repeated until by trial and error the yarn guide was centered.

One object of the present invention is to provide means for adjustably mounting a yarn guide on a traverse bar.

Another object of the present invention is to provide means for adjustably mounting a yarn guide on a traverse bar whereby said guide can be moved relative to said traverse bar while said traverse bar is reciprocating.

Another object of the present invention is to provide a yarn guide capable of being adjustably mounted on a traverse bar.

Another object of the present invention is to provide a yarn guide capable :of being adjustably mounted on a traverse bar and means for adjustably securing said guide to said traverse bar.

Another object of the present invention is to provide adjustable means for securing ayarn guide to a traverse bar which will move said yarn guide longitudinally of said traverse bar within predetermined limits and which will firmly hold said guide in any of its adjusted positions.

Other objects of the invention will in part appear hereinafter,

The invention accordingly comprises the apparatus possessing the construction, combination of elements and arrangement of parts which are exemplified in the follow ing detailed disclosure, and the scope of the application which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawing wherein:

Fig. 1 is a front elevation of one embodiment of the present invention.

Fig. 2 is a side elevation corresponding to Fig. 1;

Fig. 3 is a rear view of the adjusting element; and

Fig. 4 is an exploded view of the device of the present invention.

The present invention comprises a yarn guide held on a reciprocating traverse bar for limited longitudinal movement thereon by means of a stud secured to said bar. The stud also functions as the axis about which an eccentric, engaged in a slot in the yarn guide, is journaled for guide adjusting rotation to move said guide longitudinally of the traverse bar. A non-rotating splined locking member is provided to engage matching splines on the eccentric member to releasably lock said eccentric member and said yarn guide in their adjusted positions.

Referring now to the drawing there is shown a traverse bar 16 having a longitudinal groove 11 formed in its lower edge to reduce the weight thereof and to provide a guide slot for said bar. A second longitudinal groove 12 is formed in one side of said traverse bar to adjustably receive the mounting means for yarn guide 14. Groove 12 is T-shaped in cross section, the head of the T being represented by the numeral 15 in the drawing. Guide 14 is preferably constructed in two parts, the first part comprising base plate 16 having a segment of a circle 18 projecting from and integral with its upper edge. One edge 19 of said segment forms an angle of substantially degrees with the upper edge of base plate 16 and extends therefrom at approximately its mid-point. The second part of guide 14 comprises a base plate 20 having a segment of a circle 21 rojecting from and integral with its upper edge. Segment 21 has one of its edges 22 forming approximately a right angle with the upper edge of base plate 29 and extending from substantially the midpoint thereof.

Segments

18 and 21 are of opposite hands. That is to say, segment 18 slopes from vertical edge 19 to the left and segment 21 slopes from vertical edge 22 to the right. When the two yarn guide portions are in assembled relation, as viewed in Fig. 1, the two

segments

18 and 21 form a semi-circle. Aligned vertically extending

slots

22 and 23 are provided in

base plates

16 and 20 respectively. The ends of base plate 16 have notches 24 formed therein to receive rearwardly bent tongues 25 formed on the ends of base plate 20.

Segments

18 and 21 incline forwardly with respect to their

base plates

16 and 20 and the location of the bend line between base 20 and segment 21 is lower than the bend line between segment 18 and base 16, see Fig. 2, so that when the two guide portions are assebbled segment 21 is spaced forwardly of segment 18 a slight distance. The two

vertical edges

19 and 22 cooperate with each other to form a yarn receiving slot for guiding a strand of yarn being wound. The spacing between the two segments permits said

verticaledges

19 and 22 to be in substantial alignment with each other whereby yarns of different diameter, ranging from very fine denier to very heavy denier, can be accurately guided thereby without requiring an adjustment in the guiding slot.

Guide 14 is mounted on traverse bar by means of stud 26 provided with threads at one of its ends and a head at its other end. Stud 26 passes through helical spring 27, eccentric member 28, locking member 29, aligned

slots

22 and 23 in

base plates

16 and 20, passes through longitudinal groove 12 in traverse bar 10 and threadedly engages nut 30 located in the section of said groove. Stud 26 is screwed through nut 30 until its innermost end engages the rear Wall of groove 12 and forces nut 30 against the front wall of said opening to thereby rigidly secure said stud to the traverse bar. Spring 27 is compressed between the head of stud 26 and the base of enlarged opening 31 provided in eccentric member 28 to force said eccentric member against locking member 29 and in turn to press said locking member against the yarn guide base plates to hold said base plates firmly against the surface of traverse bar 10 with fingers 25 projecting into groove 12.

Rearwardly extending tongues 25 engaged in longitudinal groove 12 locate guide 14 vertically with respect to traverse bar 10 and permit said guide to be moved longitudinally thereon. Locking member 29 is generally rectangular in shape and is provided with a rearwardly extending flange 32 that engages beneath

base plates

16 and 18 to hold said member 29 against rotation. An opening 33 extends through locking member 29 and a plurality of radial grooves or splines 34 surround opening 33 on the front face of said member. Eccentric member 28 has an opening 35 extending therethrough from front to back that serves to journal member 28 on stud 26. The forward end of opening 35 is enlarged, as at 31, to provide a rabbet to receive spring 27. The rear face of member 28 is provided With a boss 36 concentric with opening 35 and of a diameter to fit inside of opening 33 in locking member 29. The rear surface of member 28 around boss 36 is provided with a plurality of grooves or splines 37 which are adapted to mate with the grooves 01' splines 34 formed on locking member 29. A second boss 38 is formed on boss 36 but eccentric thereto and to opening 35. The thickness of boss 36 is substantially equal to the thickness of locking member 29. Therefore, eccentric boss 38, which has a diameter substantially equal to the width of

slots

22 and 23, projects past the rear surface of locking member 29 and into said

slots

22 and 23. Member 28 is provided with a de ending finger piece 39 for the manual rotation thereof.

When it is desired to move yarn guide 14 a small distance along traverse bar 10 to center said guide with re spect to a winding bobbin, member 28 is rotated by means of finger piece 29 to rotate eccentric boss 38. Inasmuch as eccentric boss 38 is engaged. in

slots

22 and 23 and has a width substantially equal thereto rotation thereof will move guide 14 relative to stud 26. Grooves or splines 34 and 37 hold member 28 and guide 14 in its adjusted position inasmuch as they prevent relative rotation between locking member 29 and member 28 unless an appreciable turning force is applied to member 28. Rotation of member 28 is possible, when sufiicient force is applied thereto, inasmuch as the mating grooves or splines 34 and 37 have inclined sides which cam member 28 forwardly the slight amount necessary to permit it to move from groove to groove. Such forward movement compresses spring 27 which immediately moves member 28 rearwardly into mesh with the newly registered grooves. It will be obvious to those skilled in the art that member 28 can be rotated to adjust guide 14 relative to bar 10 while the winding machine is in operation and bar 10 is reciprocatmg.

Since certain changes may be made in the above apparatus without departing from the scope of the invention herein involved, it is intended that all. matter contained in the above description or shown in the acompanying drawing shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciprocating member including a stud passing through said slot, and a manually rotatable eccentric member journaled on said stud and engaged in said slot.

2. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciproeating member including a stud passing through said slot, a manually rotatable member journaled on said stud and an eccentric boss carried by said rotatable member and engaged in said slot.

3. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciprocating member including a stud passing through said slot, a manually rotatable member journaled on said stud, an eccentric boss carried by said rotatable member and engaged in said slot, and locking projections formed on said rotatable member.

4. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciprocating member including a stud, a manually rotatable member journaled on said stud, a locking element interposed between said rotatable member and said base, said element having an opening extending therethrough, an eccentric boss carried by said rotatable member and extending through the opening in said element and engaged in said slot, and cooperating locking projections formed on said element and said rotatable member.

5. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciprocating member including a manually rotatable member having an opening therethrough, a stud extending through said opening to journal said rotatable member, a boss formed on said rotatable member concentric with said opening, a locking element surrounding said boss and interposed between said base and said rotatable member, an eccentric boss carried by said first mentioned boss and engaged in said slot, and cooperating locking projections formed on said element and said rotatable member.

6. A guide for traversing a winding strand of yarn comprising in combination a base, a yarn engaging member carried by said base, said base having a slot formed therein, means for adjustably securing said base to a reciprocating member including a manually rotatable member having an opening therethrough, a stud extending through said opening to journal said rotatable member, a boss formed on said rotatable member concentric with said opening, a locking element surrounding said boss and interposed between said base and said rotatable member, an eccentric boss carried by said first mentioned boss and engaged in said slot, cooperating locking projections formed on said element and said rotatable member, and means for holding said element against rotation.

7. A guide for traversing a winding strand of yarn comprising in combination a pair of juxtaposed bases, a yarn engaging member carried by each of said bases, said yarn engaging members cooperating with each other to form a yarn guiding slot, said bases having aligned slots formed therein, means for adjustably securing said bases to a reciprocating member including a stud, a manually rotatable member journaled on said stud, and an eccentric boss carried by said rotatable member and engaged in said aligned slots.

8. A guide for traversing a winding strand of yarn comprising in combination a pair of juxtaposed bases, a yarn engaging member carried by each of said bases, said yarn engaging members cooperating with each other to form a yarn guiding slot, said bases having aligned slots formed therein, means for adjustably securing said bases to a reciprocating member including a stud, a manually rotatable member journaled on said stud, an eccentric boss carried by said rotatable member and engaged in said aligned slots, and a rearwardly projecting tongue carried by one of said bases and engaging said reciprocating member.

9. A guide for traversing a winding strand of yarn comprising in combination a pair of juxtaposed bases, a yarn engaging member carried by each of said bases, said yarn engaging members cooperating with each other to form a yarn guiding slot, said bases having aligned slots formed therein, means for adjustably securing said bases to a reciprocating member including a manually rotatable member having an opening therethrough, a stud extending through said opening to journal said rotatable member, a boss formed on said rotatable member concentric with said opening, a locking element surround ing said boss and interposed between said bases and said rotatable member, an eccentric boss carried by said first mentioned boss and engaged in said aligned slots, a rearwardly projecting tongue carried by one of said bases and engaging said reciprocating member to hold said bases against rotation relative thereto, cooperating lockprojections formed on said element and said rotatable member, and means for holding said element against rotation relative to said bases.

References Cited in the file of this patent UNITED STATES PATENTS 1,912,256 Coradi May 30, 1933 2,130,121 Dunleavy Sept. 13, 1938 2,661,177 Hofer Dec. 1, 1953 2,675,986 Fisher Apr. 20, 1954