US2727704A - Strand guide - Google Patents

Description

1 m I l JNVENTOR. ROBERT I? SMITH 2 S m m m Dec. 20, 1955 R. P. SMITH STRAND GUIDE Filed March 9. 1954 HIS ATTORNEY United States Patent D Industrial Ceramic Corporation, New Haven, Conn, a corporation of New York Application March 9, 1954, Serial No. 415,141

6 Claims. (Cl. 242-'157) This invention relates to a strand guide of the general type used for winding yarn or strands of material from a supply spo'ol onto a cone or receiving package, and has for its purpose to afford a practical and eflicient structure that enables using an eye of hard abrasion-resistant material for contact with the yarn as the latter travels through the guide while protecting the abrasion-resistant material effectively against breakage or damage.

It is essential in strand guides for the purpose mentioned to employ for the guide eye a material that is sufficiently hard to resist effectively the friction of the yarn or other material passing thereover so that it is not cut or worn by such continuous use and friction. Materials that have been found most satisfactory for this purpose are brittle and likely to be broken if struck by a bobbin or otherwise, and while various structures have been designed to protect such an abrasion-resistant eye against breakage, these have been found not entirely satisfactory for the intended function, and it is a particular purpose of the invention to afford a simple structure that can be economically produced, which is easily assembled, and which affords greater strength to the abrasion-resistant eye and greater resistance to breakage than in the strand guides heretofore available.

In the customary operation of winding machinery, it is not unusual for a bobbin or other part of the machine being elevated from beneath the strand guide or being lowered from above the guide to strike the abrasionresistant material of the eye, audit is a particularpurpos'e of this invention to support the abrasion-resistant eye more firmly throughout its entire length and render it less likely to breakage, While giving it greater rigidity and strength, at the same time affording an effective interlock between the abrasion-resistant eye audits metal support or holder so that the abrasion-resistant eye is securely held in the metal holder against either lateral or endwise relative movement. v

To these and other ends, the invention consists in the construction "and arrangement of parts that will appear clearly from the following description when read in conjunction with the accompanying drawings, the .novel features being pointed out in the claims. following the specification.

in the drawings:

i Fig. 1 is a view in side elevation illustrating one embodiment of the invention, and showing the strand .guide in approximate operative position, in contact with a body ofyarn being wound onto a receiving cone;

Fig. '2 is an enlarged longitudinal sectional view taken centrally through the metal holder and abrasion-resistant y Fig. 3 is a top plan view of the guide eye and metal holder;

Fig. 4 is a'bottornplan viewof the-same;

Fig. is a view in side elevation of the device, looking in thebpposite direction to'Fig. 1,;

Fig. 6 is a view inelevationto'f tthe'liront end;

2,727,704 Patented Dec. 20, .1955

Fig. '7 is aview in elevation of the rear end; I

Fig. 8 is a detail transverse sectional view on line 8-8 of Fig. 4; v

Fig. 9 is a detail transverse sectional view on line 9-9 of Fig. 4, and

Fig. 10 is ahorizontal sectional view.

Referring more particularly to the drawings in which like reference numerals refer to the same parts throughout the several views, the invention is illustrated in connection with a preferred embodiment comprising a guide eye of suitable hard abrasion-resistant material which includes a continuous side portion 1 along one side, a curved outer end portion 2 having an 'arcuately curved periphery, and spaced outer and inner side portions 3; and 4 respectively along theopposite side of the guide eye, the outer surfaces of which are offset laterally from one another as shown. 5 designates an inclined lateral opening between the side portions 3 and 4 through which a strand can be threaded into the guide eye, while 6 designates the inner end portion of the eye provided on its upper surface with a transversely curved longitudinally extending recess or cutaway portion 7 over which the strand passes as it is fed through the guide eye.

The side and end portions of the guide eye are of 'gen erally rectangular cross-section and their exterior surfaces of uniform and substantial depth throughout, while the side portion 1, curved end portion 2, and outer side portion 3 are provided with a groove or recess 8 preferably 'of rectangular cross-section extending entirely therearound from the inner end of the guide eye around the curved 'outer end 2 and to a point spaced from the inner end of the side portion 3. The recess "or groove '8 is located intermediate the top and bottom surfaces of the guide eye preferably at apoint spaced from both the top and bottom surfaces and preferably slightly closer to the top surface of the guide eye all for a purpose that will appear presently.

The guide eye is provided on its undersurface 'at the :outer end with a groove or'recess 9 that receives theyarn as the latter travels through the eye onto the receiving cone or package, and 11 designates a sleeve forming part of the metal holder and adapted to telescope over the cylindrical upper end of the arm 12 which "is mounted for pivotal movement toward and .away'from the cone 'or yarn body onto which the strand is wound, as usual in this type of winding machinery.

Tre metal holder includes a base "13 that extends over and abuts the bottom surface of the inner end portion of the guide eye and has a forwardly projecting portion 14 that extends over the bottom of the side portion 1 and abutsian "enlargement 15 formed on the bottom of the side portion 1 of the abrasion resistant guide eye, acting to prevent relative endwise movement in "one direction be- :tween the guide eye and the metal holder, while the 'base 1-3 and extension 14 afford an eifect-ive guard for the inner end portion of the guide eye. The metal holder also includes an upstanding wall or 'fl'ang'e 16 that embraces the outer surface of the side portion 1 of the guide eye and an upstanding wall or 'tian'ge 1-7 that embraces the outer surface of the side portiond of the. guide eye, both flanges 1 6 and 17 extending to points adjacent to the top of the guide eye.

The ,problem in structures of this general character such as illustrated in Patent No. 2,663,516, December 22, 1953, has been to provide the guide eye with adequate strength, rigidity, and resistance .to breaking, particularly at the outer end of the eye, while leaving the eye free to guide the "strand without it contacting any metal parts which would damage the yarn or strand as it 'feeds through, and this is accomplishedinthepresent structure by the p'rovisi'onof a brace bando'f metal or other suitable stiff, strong material located in the aforementioned groove'or recess 8. The brace band indicated at 18 is preferably of rectangular cross-section fitting snugly within the groove 8 and flush with the outer side surfaces of the guide eye. The brace band 18 which fits within the groove or recess 8 is attached by suitable solder means to the flange or wall 16 of the metal holder. The brace band 18 is first positioned in the groove 8 of the guide eye extending from near the inner end of the side portion 3 around the curved outer end 2 and to the inner end of the side portion 1, and is attached by a body of solder 19 to the wall or flange 16 of the metal holder, the solder connection preferably extending between the brace band 18 and the flange 16 throughout the length of the latter.

In assembling the parts, the brace band 18 is positioned in the groove 8 of the guide eye which is then inserted together with the brace band 18 into the metal holder between the flanges 16 and 17 until the projection or abutment 15 of the guide eye is engaged with the extension 14 on the base 13 of the metal holder, and the solder 19 is applied between the metal brace band 18 and the metal side Wall or flange 16 of the holder.

When thus attached, the brace band 18 extends around the curved outer end of the guide eye and acts as a strengthening and stiffening means for the outer end and effectively lends greater rigidity to the outer end of the guide eye and renders it considerably less likely to be damaged or broken if struck by a bobbin or otherwise. The brace band 18, being attached to the metal holder and extending around the outer end of the guide eye, re-

tains the latter positively against endwise movement relatively to the metal holder in one direction while relative movement of these parts in the opposite direction or inwardly of the metal holder is prevented by the abutment 15 formed on the abrasion-resistant material of the guide eye engaging the extension 14 on the base of the holder.

The forward edge of the flange 17 is preferably curved and also bevelled, as shown at 21 in Fig. 5, to facilitate threading a strand into the eye, the bevelled edge 21 forming in effect a continuation of the inclined forward edge of the side portion 4, and completing the inclined slot 5.

While the invention has been described in connection with the particular construction herein shown, it is not restricted to the details disclosed and this application is intended to cover such modifications or departures as may come within the purposes of the improvement or the scope of the following claims.

I claim:

1. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, a curved outer end portion, and spaced straight side portions along the opposite side forming with the first mentioned side portion an elongated opening and affording a lateral slot to permit inserting a strand into the eye, a metal holder including a base underlying and extending over the inner end portion of the eye, said base terminating at said lateral slot, upstanding flanges on said holder engaging the adjacent outer surfaces of the eye, and a brace band extending around said curved outer end portion of the eye and attached to said metal holder.

2. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, a curved outer end portion, and spaced straight side portions along the opposite side forming with the first mentioned side portion an elongated opening and affording a lateral slot to permit inserting a strand into the eye, a metal holder including a base underlying and extending over the inner end portion of the eye, said base terminating at said lateral slot, upstanding flanges on said holder engaging the adjacent outer surfaces, of the eye, said eye having a groove extending along said continuous side portion and around said curved outer end portion to the opposite side of the 4 eye, and a brace band located in said groove and attached to the adjacent flange of the metal holder.

3. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, a curved outer end portion, and spaced straight side portions along the opposite side forming with the first mentioned side portion an elongated opening and affording a lateral slot to permit threading a strand into the eye, said eye being of substantially rectangular cross-section throughout, a metal holder including a base underlying and extending over the inner end portion of the eye, said base terminating at said lateral slot, upstanding flanges perpendicular to said base e11- gaging the adjacent outer surfaces of the eye, the eye having a groove extending along said continuous side portion and around said curved outer end portion, said groove being arranged between the top and bottom surfaces of the eye and terminating at a point spaced outwardly from said lateral slot, and a brace band located in said groove flush with the outer side surfaces of the eye and attached to the adjacent flange of said metal holder.

4. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, inner and outer straight side portions along the opposite side spaced from each other forming with the first mentioned side portion an elongated opening through which the strand travels and affording a lateral slot through which a strand is threaded into the eye, a curved outer end portion connecting opposite side portions and a guiding portion at the inner end connecting opposite side portions, said curved outer end and the inner end being cut away on the top and bottom of the eye affording strand-receiving grooves extending longitudinally of the eye permitting a strand to travel over the inner end portion and thence through the eye and under the outer end portion, a metal holder including a base underlying and extending over the inner end portion of the eye, said base terminating at said lateral slot, flanges extending perpendicularly to said base portion and located in engagement with the adjacent side surfaces of the eye, the eye being of substantially rectangular cross-section throughout and having a groove extending along said continuous side portion and around said curved outer end, said groove being located between the top and bottom surfaces of the eye and terminating in spaced relation to said lateral slot, and a brace band located in said groove and extending along said continuous side, around said curved outer end and terminating at the end of said groove, said brace band being fixedly attached at its inner end to the adjacent flange of said metal holder and the eye having an enlargement formed thereon on its bottom surface adjacent to the forward terminus of the base of the metal holder on the continuous side portion of the eye and acting to limit relative movement between the eye and metal holder in one direction while relative movement of the metal holder and eye in the opposite direction is prevented by said brace band.

5. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, an outer straight side portion along the opposite side connected to said continuous side portion by a curved outer end portion, an inner straight side portion connected to said continuous side portion by an inner end portion and spaced from said outer side portion to afford a lateral slot through which a strand is threaded into the eye, said curved outer end portion and said inner end portion having recesses formed on the bottom and top respectively thereof to afford strand-receiving grooves extending longitudinally of the eye permitting a strand to travel over the inner end portion and thence through the eye and under the outer end portion, the eye being of substantially rectangular cross-section throughout and the outer' surface of said outer side portion being ofiset outwardly from the outer surface of said inner side por- 75, tion, a metal holder including a base underlying and engaging the bottom surface of the inner end portion of the eye, said base terminating at said lateral slot, upstanding perpendicular flanges on the base embracing the outer surfaces of the adjacent side portions of the eye, the eye having a groove extending along said continuous side portion and around the curved outer end portion, said groove being located between the top and bottom surfaces of the eye and terminating at a point spaced from said lateral slot, a brace band located in said groove extending along said continuous side portion and around said outer end portion, said brace band terminating at a point spaced from said lateral slot and being rigidly fastened to the adjacent flange of the metal holder, said base of the metal holder extending forwardly along said continuous side portion of the eye to a point approximately intermediate the inner and outer ends of the eye, and an enlargement on the undersurface of the eye in engagement with said extension on the base acting to limit relative inward movement of the eye in relation to the metal holder while relative outward movement of the eye in relation to the holder is prevented by said brace band.

6. A strand guide including an eye of hard abrasionresistant material consisting of a continuous straight side portion along one side, an outer straight side portion along the opposite side connected to said continuous side portion by a curved outer end portien, an inner straight side portion connected to said continuous side portion by an inner end portion and spaced from said outer side portion to afford a lateral slot through which a strand is threaded into the eye, a metal holder including a base underlying and engaging the bottom surface of the inner end portion of the eye, said base terminating at said lateral slot, upstanding fianges perpendicular to said base embracing the outer surfaces of the adjacent side portions of the eye, and a brace band extending around said curved end portion and along said continuous side portion, said band being rigidly attached to the adjacent flange of the metal holder.

' References Cited in'the file of this patent UNITED STATES PATENTS 1,296,479 Cass Mar. 4, 1919 2,202,937 Wolfe June 4, 1940 2,323,987 Foster July 13, 1943 2,663,516 Pieper Dec. 22, 1953

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