US1966500A - Guard for yarn guides of winding machines - Google Patents

Description

July 17, 1934. c HAVEY 1,966,500

GUARD FOR YARN GUIDES OF WINDING MACHINES Filed March 12, 1932 wlmmlmimiiliillIiil 1N VENTOR: Juries 74 M114 I A TTORNEYS.

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Patented July 17, 1934 GUARD FOR YARN GUIDES OF WINDING MACHINES 7 Charles F. Havey, Philadelphia, Pa. Application March 12, 1932, Serial No. 598,494 6 Claims. (01442-157) This invention relates to guards for the guides.

of winding machines such as are ordinarily employed' to wind yarns into packages suitable for use in knitting or weaving processes.

"-In a winding machine of the kind to which I have particular reference, the yarn is drawn from a supply spool and passed, first through a ten sioning means, and then through the notched eye of a guide finger while enroute to a receiving tube, which latter is 'mounted on a spindle rotating at very high speed, the guide finger being constantly traversed back and forth along the length of the receiving tube in order to distribute the yarn uniformly in successive layers. Through slack occasioned by momentary variations in'tensionon the yarn or due to other abnormally induced causes incident to the operation of thewinding machine, loose turns or convolutions are sometimes formed on the package being wound. 7 Under the high rotative speed of the package, theseloose turns or convolutions are thrown outward bycentrifugal' action, and invariably catch on the traversing guide fing'er. This results in rupture of the loop, and, as the winding of the package continues, the broken ends are covered byfollo'wing'layers of the'yarn and thus escape detection by the operator of the winding machine as well as by the inspector afterwards. When such yarn'is subsequently used in a warping machine or in a loom, the separations occasioned by the ruptures entail stoppages to enable connecting of the broken ends, with attendant loss of 'timeand corresponding reduction in theoutput of the warping machine or loom. Again, when suchyam is used. in a knitting machine, the separations of the yarns where the ruptures have occurred causes what is known as press-ofis which are very costly to theknitter, and, as in the case of the warping machines and looms, greatly curtails production. 'W-hen 'press oils occur'under' these conditions,"the-knitter usually complains that the broken ends had not been properlytied or lapped around the cone'packa'ge during winding Broadly speaking, my invention is directed-toward obviating the-above contingencies, which desideratum I attain; through provision of a deflecting guard designed for attachmentto the thread guide fingers of winding machines, and adapted to restrain any loose turns or convolutions on the packages, and prevent their entan-' glement with said guide fingers.

A further aim of my invention is to provide a guard, which, in addition to functioning as aforesaid, will facilitate threading of the guide and prevent accidental displacement of the thread from the notched eye of the guide.

Still other objects and attendant advantages of this invention will be manifest from the detailed description following in connection with the attached drawing,wherein Fig. I is a frag mentary elevation of a typical yarn winding machine whereof the traversing guide fingeris fitted with my improved guardh 1 Fig. II is a fragmentary view 'in plan showing the traversing guide and the guard in operative relation to the package being wound.

Fig. III is a detail cross sectional view taken as indicated by the arrows III-IIIin Fig. Fig. IV is a perspective view of the guard drawn toalarger scale; and g Fig. V is a detail sectional viewtakenas indicated by the arrows V-V in Fig.,III and likewise drawn to a larger scale. I a

With more specific reference to these illustrations, the numeral 6 designates one of the horizontal spindles of thawinding machine, which spindle is driven at'high speed ,by suitable means, not, illustrated. Mounted on the free end of the spindle 6 is a holder -'7 forthe conical tube 8 onto which the yarn Sis-being woundinto'a package of corresponding shape, the said holder .being disconnectable from the spindle through 'a clutch means actuatableby a handle 10. Enroute to the cone 8, the yarn 9 is first passedthrough a tensioning means (not illustrated), then led over a wire ball 11 which is carried bythe swinging counterweighted traverse frame of themachine partly shown at 12, and finally through the V- notch of the porcelain eye 13 of the traversing guide finger 14. As usual, the guidefinger I4 is detachably secured, by means of a clamp screw 15, to the end of a rod 16 extending laterally from a block 17 which is slidinglyguidedby a horizontal bar 18 of, the swinging framelZ, Reciprocatory motion is imparted to theslide .block 17 through a roller 19 engaging the peripheral groove of a rotary cam partly shown at 20, the traversing guide finger l4. being thereby moved. back and forth lengthwise of'the cone 8, and so determines uniformdistribution' of the yarn 9 in successive layers, while' the porcelain eye 13 .is constantly maintained in; sliding contact with the surface'of the yarnpackag e by the action of the counterweight (not shown) on the frame 12, all in a well known manner.

Incident to the operation of a winding machine of the described type, loose turns or convolutions, for example as indicated at 21 in Figs. II and III, are sometimes formed on the yarn package due to fluctuations in the tension on the yarn, or to other causes. By influence of centrifugal force attending rapid rotation of the yarn package, such turns or convolutions 21 are bowed outwardly and invariably catch on the traversing guide finger 14 with resultant rupture of the yarn. If the operative of the winding machine fails to notice the occurrence, the broken ends of the yarn are covered by layers subsequently wound on the package and are therefore not detectable upon final inspection of the finished cone.

The guard which I have devised to overcome these difiiculties, is generally indicated in the drawing by the numeral 22. As shown in Fig. IV, the guard 22 is in the form of a'convexed sheet metal stamping with a spherically-convexcd upper portion characterized by open annular wings 23 which are symmetrically disposed to opposite sides of a pendant tongue 24 whereof the bottom edge is laterally bent as at 25. The wings 23, it will be particularly noted, are relatively wide, and extend well above the spindle 6 and the package 8 being wound thereon. It will further be noted that the wings 23 are separated by an interval 26 which increases gradually from a mere slit at the top, to a rounded enlargement 27 at the bottom proportioned to fit over the head 13a of the porcelain eye 13 of the traversing guide finger 14, see Fig. V. As shown in Figs. I and III, the guard 22 is secured to the traversing guide finger 14 at the front, with its tongue 24 aligned with the shank of the guide, with the enlarged bottom portion 27 of its slit 26 engaging over the head 13a of the porcelain eye 13, and with its outwardly curving deflecting wings 23 arranged tangentially in relation to the length of the cone 8 and disposed to opposite sides of the guide finger. The screw 28, which is employed as the securing means, passes through an aperture 29 (Fig. IV) in the tongue 24 of the guard 22 and screws into the guide finger 14. Virtually, the tongue 24 of the guard 22 constitutes a spring clamp with a fulcrum at the point of contact of its laterally turned edge 25 with the shank of the guide finger 14, whereby the circumferential flange 30 of the porcelain eye 13 (Fig. V) is clamped to said guide finger. The porcelain eye 13 is thus definitely positioned on, and effectively secured to the guide finger 14 without necessitating use of glue or shellac as ordinarily.

In the event of the formation of a loose turn or convolution 21 on the cone 8, the wings 23 of the guard, by virtue of their outward curvature and disposal tangentially of the length of the cone, will obviously deflect the bowed loop of loose yarn away from the guide incident to the traverse of the latter, and thereby prevent its entanglement and rupture.

The guard of my invention is accordingly advantageous in that it positively obviates yarn rupture in the event of the formation of loose turns or convolutions on the yarn packages incident to winding and in that it absolutely precludes the more serious after effects to which attention has been directed hereinbefore. My improved guard moreover facilitates threading of the guide since its slit 26 serves as a means for directing the yarn into the notch of the eye 13, as well as a means to prevent accidental displacement of the yarn from said eye after threading.

Having thus described my invention, I claim:

1. As a new article of manufacture, an integrally formed guard for use in connection with the thread guides of winding machines, said guard being characterized by a spherically-convexed upper portion with open-annular deflecting wings symmetrically disposed laterally of a central pendant attaching tongue, and a narrow threading slit between the wings.

2. 'As a new article of manufacture, an integrally formed guard for use in connection with the thread guides of winding machines, said guard being characterized by a spherically-convexed upper portion with open annular deflectink wings symmetrically disposed laterally of a central pendant attaching tongue, and a narrow threading slit with a circular terminal enlargement between the wings.

3. As a new article of manufacture, an integrally formed stamped sheet metal guard for use in connection with winding machines, said guard being characterized by a spherically-convexed upper portion with annular deflecting wings symmetrically disposed laterally of a central depending attaching tongue, and a narrow threading slit between the wings.

4. As a new article of manufacture, an integrally formed stamped sheet metal guard for use in connection with winding machines, said guard being characterized by a spherically-converted upper portion with open annular wings symmetrically disposed laterally of a pendant central attaching tongue, a narrow threading slit with a circular terminal enlargement between the wings,

and a pivoting projection along the bottom edge of said tongue.

5. A guard for the traversing guide fingers of winding machines, having a pendant tongue apertured for attachment to the front of the shank of the guide finger; and a spherically-convexed upper portion in tangential relation to the spindle of the winding machine, characterized by a pair of annular guard wings symmetrically disposed at opposite sides of a central vertical threading slit, said slit terminating at its bottom in a rounded opening for protrusion of the head of a notched cylindric thread eye with a circumferential flange of the latter engaged between the guard and the guide finger.

6. A guard for the traversing guide fingers of winding machines having a tongue apertured for attachment by a screw to the front of the shank of the guide finger, said tongue being formed with a fulcrum edge at its lower end to bear on said guidefinger; and a spherically-convexed upper portion in tangential relation to the spindle of the winding machine, characterized by apair of annular guard wings symmetrically disposed at opposite sides of a central vertical threading slit,isaid slit terminating at its bottom in a rounded opening for protrusion of the head of a notched cylindric thread eye with a circumferential notch on the latter clampingly held between the guard and the guide finger.

CHARLES F. HAVEY.

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