US2699905A - Yarn guide for traverse - Google Patents

Description

Jan. 1s, 1955 1w. w. EGEE 2,599,905

YARN GUIDE FOR TRAVERSE Hi F1|:T l B5 laf: l6\ .'iinrglillll MMIII MMIII lllllllil llllllllllillllillll lllilllliil illillllll lliluiillllsrll IIIIIIIII Illlllllluu /je #7% f l wwwwHHHHHMLHH n "e .I l

INVENTOR. WALTER WARREN EGEE ATTORNEY Jan. 18, 1955 w. w. EGEE 2,699,905

YARN GUIDE FoR TRAvER'sE Filed Dec. 26, 1952 s sneetssheet 2 Fl E; E Fl [EL 7 A JNVENToR. WALTER WARREN EGEE Jan. 18, 1955 w, Wl EGEE 2,699,905

YARN GUIDE FOR TRAVERSE Filed Dec. 26, 1952 5 Sheets-Sheet 3 INVENTOR.

WALTER WARREN EGE:

f com ATTORNEY United States Patent C 2,699,905 YARN GUIDE Fon TRAVERSE Walter Warren Egee, Yeadon, Pa., assignor to Fletcher Works Incorporated, Philadelphia, Pa., a corporation of Pennsylvania Application December 26, 1952, Serial No. 327,971

6 Claims. (Cl. 242-157) This invention relates to bobbin builders and more particularly to improved mechanism for making a yarn package on a bobbin having a cylindrical section with a tapered or frusto-conical base, and in which lthe yarn package has a cylindrical section and a frusto-conical end.

In the prior application of Hilmar Roessel, filed August l, 1951, Serial No. 239,703, now abandoned, there is shown a bobbin builder having an improved thread guiding and laying mechanism which is quite suitable for certain types of winding operations. Movement of the traverse bar out of its normal path, or a lack of careful setting of the brake introduce possible diiculties. A change in the type of yarn, or of the tension of the yarn usually requires a resetting of the brake. In some instances also, at the open end of the bobbin there may be a tendency of the yarn guide arm to catch.

The bobbin builder of the present invention overcomes a thread guiding and laying mechanism in which the thread guide, at the open end of the bobbin, is restrained from movement over the end of the yarn package while also providing yarn delivery against the tapered base of the bobbin.

It is a further object of the present invention to provide a bobbin builder with which an improved yarn package of the character aforesaid can be wound.

Other objects and advantageous features of the invention will be apparent from the specification and claims.

The nature and characteristic features of the invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which:

Figure 1 is a front elevational view of a bobbin builder in accordance withthe invention;

Fig. 2 is a top plan view of the structure shown in Fig. l;

Fig. 3 is a vertical sectional view on the line 3-3 of Fig. l;

' Fig. 4 is a front elevational View, enlarged, of a portion of the yarn guiding mechanism;

Fig. 5 is an end elevational View of the structure shown in Fig. 4;

Fig. 6 is a vertical sectional View taken on the line 6 6 of Fig. 2;

Fig. 7 is an elevational view, enlarged, of a yarn guide emnloyed with the invention, parts being broken away; an

Fiig. 8 is a top plan view, further enlarged of the yarn gui e.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various modifications and changes may be made in the structure disclosed, without departing from the spirit of the invention.

Like numerals refer to like parts throughout the several views.

Referring now more particularly to the drawings, a fragmentary portion of a conventional machine for windice ing or twisting, and in which yarn is wound from one package to another is illustrated at 10 and has disposed in parallel relation thereto, a drive shaft 11 on which is mounted, for each bobbin B to be wound, a driving roll 12, having a friction face 13, of cork or the like.

The winding machine is also provided in the customary manner with a traverse bar 14, also parallel to the frame portion 10 and to the shaft 11, and supported in any preferred manner. The traverse bar 14 is reciprocated with a predetermined length of stroke in a straight line and preferably in predetermined intersecting vertical and horizontal planes, by any desired reciprocating mechanism (not shown).

At the location on the frame portion 10 at which each driving roll 12 is provided, spaced bracket supports 15 are mounted, each having an outwardly extending bracket arm 16. The arms 16 have side recesses 18, at the front ends of which vertical guides 17 are provided. Each pair of facing guides 17 is adapted to have a spindle 19, on which the bobbin B to be wound is carried, engage their inner faces. The driving roll 12, in engagement with the rear of the bobbin B, holds the spindle 19 in engagement with the guides 17 so that the longitudinal axis of the bobbin B is constrained to move vertically in a straight path.

The bobbin B is illustrated as having a cylindrical section 20 of a length slightly greater than the stroke of the traverse bar 14, and a frusto-conical base portion 21.

The traverse bar 14 is provided, for each bobbin B to be wound, with yarn guiding and laying mechanism. While various types of structure may be employed for this purpose one suitable form of mechanism is shown in the Roessel application above referred to and includes a block 26 with a downwardly extending rear ledge or shoulder 26a and with spaced horizontal extensions 27 on the base or lower part 28 for securing the block 26 to the traverse bar 14 by bolts 29.

The block 26 may also have spaced posts 30 and 32 with inner opposed vertical parallel side faces 31 and 33 disposed in planes at an angle to the vertical plane of movement of the traverse bar, with a horizontal pivot pin 34 normal to the faces 31 and 33, on which a holder block 36 is secured. The faces 31 and 32 are preferably at an angle which is the same as or closely approximates the angle of inclination of the base portion 21 of the bobbin B.

The post 30 is also preferably provided with a yarn guide 46 having spaced vertical legs 46a and 46b corinected at their upper end by a curved section 46c, and with an end 46d on the leg 46a for engagement in the p ost 30. The legs 46a and 4Gb have their upper end portions inclined as at 47, and the leg 46a has a vertical section 46e connected thereto and a horizontal section 467c connected to the end 46d.

Within the post 30 an adjustable brake is preferably provided within a vertical bore 4t), intersecting the bore in the post 30 within which the pivot pin 34 is mounted. A brake shoe 0r plug 41 in the bore 40 engages the pin 34 and has a spring 42 in engagement therewith and with a slotted screw plug 43 in threaded engagement in the upper end of the bore 49. The plug 43 permits of adjustin4g the frictional engagement of the shoe 41 with the pin The structure heretofore described is either conventional structure found in many winding and twisting machines, or is shown in the Roessel application above referred to and is'included by way of illustration and to aid understanding the invention.

The holder block 36 has a guide arm 50 extending therefrom, the arm 50 being held in position in the holder block 36 by a set screw 51. The arm 50 has an end portion 52 extending inwardly towards the bobbin B and mounted on the end portion 52 a thread guide 53 is provided.

The thread guide 53 includes a shank 54 on the end portion 52 and a head 55 with a face 56 provided with an inclined slot 57 bounded on one side by a relatively thin wall 58. The slot 57 is offset to one side of the longitudinal axis of the shank 54 and the face 56 and slot 57 extend and are disposed above a horizontal plane through 'the longitudinal 'axis of the pm 19. The shank 54 may also have a forwardly extending projection 59 for limiting downward movement of the yarn. The mode` ment to the left and to the rear with the yarn guide 46, A

in front of the shank S4 and in engagement with the shank 54 and upwardly in the slot 57 and onto the cylindrical portion 20 of the bobbin B. The guide arm S0 is initially positioned so that the thread guide 53 rests lightly on the periphery of the cylindrical portion 20 of the bobbin B, although even if outwardly disposed with respect to the cylindrical portion it will be moved into engagement by the tension of the yarn.

with respect to the shank for bearing engagement with the yarn on the bobbin, said face portion having an upwardly extending yarn guiding slot therein, and said slot being offset with respect to sa'id lever.

2. Yarn guiding mechanism for a yarn guiding lever pivotally mounted with respect ot a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a shank portion for engagement by the yarn being supplied for winding and a face portion outwardly disposed with respect to the shank for bearing engagement with the yarn on the bobbin, said face portion having an upwardly extending yarn guiding slot therein, and said slot being closely spaced with respect to one side margin of the face portion.

3. Yarn guiding mechanism for a yarn guiding lever pivotally mounted with respect to a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a shank portion for engage- As yarn is supplied to the bobbin B in layers the yarn I l package is elevated in a vertical path.

As yarn is supplied to the bobbin B in layers, also, the yarn guide 53 and the upper end of the guide arm 50 are urged outwardly and are gradually swung about the pivotal axis provided by the pivot pin 34. As the guide 53 moves outwardly the effective longitudinal position of the stroke is changed, being advanced to the right as shown in Figs. l and 2, to accommodate the yarn to the base portion 21 of the bobbin B.

As the yarn guide 53 moves to the end ot' its stroke at the open end o1' the bobbin B, the guide 53, at the upper corner portion thereof, remains at all times in engagement with the yarn previously wound on the bobbin B so that the yarn guide 53 cannot fall or move down the open inclined end of the yarn package.

As the yarn guide 53 moves to the other end of the stroke, the wall 5S is not suciently large or thick to prevent the delivery of yarn substantially at the intersection of the yarn previously wound and the base portion 21 of the bobbin B.

The brake shoe 41 is set, by adjustment of the screw plug'43, to provide the desired friction or drag on the pivot pin 34, to permit outward movement of the yarn guide 53 as the yarn package is wound, and to permit the tension of the yarn to move the yarn guide 53 into engagement with the yarn package but to prevent accidental displacement by shock, vibrations and the like.

If desired, and by reason of the location of the yarn guide 53 above the horizontal central plane through the pin 19, the block 26 is preferably adjusted with its faces 31 and 33 slightly out of parallelism, of the order of a. few degrees,.with the base portion 21 so that in the innermost and outermost positions of the yarn guide 63 the slot 57 is as close as possible to the base portion 21 of the bobbin B.

When a yarn package of the desired size has been completed, the winding may be discontinued in any desired manner, a new bobbin B is inserted, and winding resumed The yarn package obtained will, of course, be complemental in shape to the shape of the bobbin B, with a cylindrical portion and with a truste-conical open end opposite to the base portion 21.

I claim:

1. Yarn guiding mechanism for a yarn guiding lever pivotally mounted with respect to a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a shank portion for engagement by the yarn and a face portion outwardly disposed ment by the yarn being supplied for winding, and a terminal end providing a head with a face portion for bearing engagement with the yarn on the bobbin, and said face portion having an upwardly extending yarn guiding slot'therein.

.4. Yarn guiding mechanism for a yarn guiding lever pivotally mounted with respect to a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a shank portion for engagement by the yarn being supplied for winding and a terminal end providing a head with a face portion for bearing engagement with the yarn on the bobbin, said face portion having an upwardly extending yarn guiding slot therein, and said slot being closely spaced with respect to one side margin of the face portion.

5. Yarn guiding lmechanism for the delivery of yarn to a bobbin with a frustoconical end section by a yarn guiding lever pivotally mounted with respect to a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a face portion for continuous bearing engagement with the yarn on the bobbin and another portion for engagement by the yarn being supplied, said face portion having an upwardly extending yarn guiding slot therein to which the yarn extends from said other portion, said slot being closely spaced with respect to one side margin of the face, said face portion at one end of the stroke preventing movement of said yarn guide below the outer surface of the yarn on the bobbin and at the other end of the stroke permitting delivery of yarn to the intersection of the yarn on the outer surface of the bobbin and the frustoconical end section of the bobbin.

6. Yarn guiding mechanism for the delivery of yarn to a bobbin by a yarn guiding lever pivotally mounted with respect to a reciprocatory traverse bar comprising a yarn guide on the free end of said lever, said yarn guide having a shank portion for engagement by the yarn being supplied for winding and a terminal end providing a head with avface portion for bearing engagement with the yarn on'the bobbin, and said face portion having an upwardly extending yarn guiding slot therein for reception of the yarn from said shank portion.

References Cited in the file of `this patent UNITED STATES PATENTS

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