US1772236A - Thread or yarn guide - Google Patents

Description

' Aug. 5, 1930. I F, ALZ 1,772,236

THREAD 0R YARN GUIDE.

Filed July 19 1928 V INVENTOR. Friedrich. A/z.

ATTORNEY.

Patented Aug 5, 1930 UNITED STATES,

FRIEDRICH ALZ, or PHILADELPHIA, PEN-'NSYLVANI'A THREAD on YARN GUIDE- Application filed July 19;

My invention has for its object certain improvements in thread or yarn guides suitable for textile machinery, and. more especially for use-with knitting machines for making" full-fashioned hosiery, whereby the operative life of the guide is greatly increased, the

functioning of the guide is improved, great saving incost of repairs is assured,and the operation of the knitting machines is not interrupted'by reason of repairs being continually required to the thread guides, as has beenthe case heretofore.

Prior to my invention, it has been customary to form the thread or yarn guides with body frames provided with porcelain eyes arranged at an angle to each other and through which the thread or yarn travels in succession,

the metal of the frame adjacent to one of the eves being extended into a flat polished sur- 2 face over which the thread or yarn is caused to travel and upon which it is yieldingly pressed by a tension spring. Experience has shown that this action of the traveling thread.

or yarn upon the flatnietal guide surface causes a groove to be cut therein, which in due time must be removed, this being accomplished, by filing off and polishing the said led surface, and in that manner renewing the smoothness of the guidingsurface. This 3 filing downof the metal not only wears out. the metal of the guide, but also more or less abrades the'porcelain eye, making it rough and .liable to injure the thread or yarn. To cure this latter defect, the porcelain eye itself must be replaced. All this repair work has to be repeated from time to time, with the resultant heavy cost in labor and the temporary idleness of the machines.

By use of my improved thread and yarn guide, the above stated difficulties are avoid: ed, because I eliminate entirely the use of the extended flat"- metal guide surface and all danger of injury to the porcelain guide eyelet. By reason of that fact the filing for repairs are made unnecessary.

More particularly, my im'ention comprises a suitable metal body and a porcelain or other vitrified thread or yarn guide, but so modified and reconstructed that the porcelain 1928. Serial no; 293,817.

eye has added thereto an extended guide surface or apron preferably formed as an integral part thereof, and by reason of which the thread 'or yarn is not permitted to come into contact with or be metal itself. 1

My invention also embodies other'features of construction and these, together with those above enumerated, are fully described hereinafter and pointed out in the claims.

. Referringto the drawings:

Fig. 1 is a perspective view of a thread or yarn guide embodying my invention;

Fig. 2 is a vertical section through the same;

Fig. 3 is a perspective view'looking. down upon myimproved thread leader or combined eyelet and fiat guide surface (removed from the body) Fig. 4 is an nvertedperspective view of I the same; and

I Fig. 5 is a plan view with m improved leader or guide attached to the ody frame and indicating in dotted lines its-capacity for adjustment.

Referring more particularly to the drawings wherein similar reference numerals-dd. note similar parts, reference numeral 2 is the cast metal body of the yarn guide and may be of the-usual or general form and provided with a clamping screw 17, whereby it"may be clamped upon a transverse bar 16 by which it'is supported and moved. The body 2 may be provided with the-two upwardy extending arms 3v and 4, both flanged at their upper ends. The arm 3 has a transverse hole in which a porcelain eye 6 is placed and securedguided by the cast cored) and an extended surface 12 whichv may be ground to an approximately flat condition for the reception of the guiding eyelet 9'with itsextended apron 10, as shown.

Referring moreparticularly to the thread or yarn guide eyelet and its associated parts, it will be seen from Figs. 2, 3 and 4, that I provide a fiat guide apron 12 extending over the metal surface of the flange 5 and made with an integral eyelet or cylindrical part 10 near one end and pierced with a guiding aperture 9, said part 10 projecting downward from the back or under surface. The

hole 8 in flange is slightly greater in diameter than the part 10 and the latter is secured therein by shellac or other cement 7. When the eyelet, thus formed, is secured in position on the flange 5, the apron 10 thereof the aperture of eyelet 6, whereas the surface of the apron 10 is extended in a direction toward the said eyelet 6.

Definition: The term .hard smooth substance as used in the specification andclaims lain or other vitreous thread guide.

The edge 11 of the apron is rounded and the upper end of the aperture 9, Where it meets the surface of the apron 10, is also curved or rounded to provideasmooth guiding surface for the thread or yarn 19 as it travels first through eye-6, then over the surface of the apron 10, and finally down through aperture 9, as shown in a dot and dash line 19. While the upper guiding surface of the apron 1'0 and the walls of the aperture 9 should be of a hard vitreous material and glossy, the back of the apron and outer wall ofv the part 10* may be unglazed so as to permit being cemented more perfectly in position.

In Fig. 5, the guide apron 10 is shown in full lines in its normal position, but is also shown in dotted lines, indicating its capacity for adjustmentabout the. eye aperture 9 as an axis. By this adjustment, the apron may be repositioned in case of any defect in its surface, irrespective of the cause. I When adjusted it would, be fixedly cemented in position. The capacity of this adjustment may also be utilized in casethe yarn was to be led.

to eye 9 from a lateral direction with respect to eye 6. I

13 is a tension spring secured to the arm 3 by screws 1 1, as shown, and having its free end 15 extended over the porcelain apron 10 and eye 9; and is adapted to have its tension removed at intervals by contact with the rod 18, as has heretofore been the practice. The spring 13 is thin and tempered with a hard surface. and hence does not become abraded as did the cast iron of theiiange 5.

With my improvement, the thread or yarn 19 travels over the porcelain apron 10 and because of its hard and glossy surface, there is no tendency to cut or abradesaid surface, and consequently no grooves are formed therein and no repairsare necessary, unless the porcelain apron is injured by carelessness or is defective fromany cause. In the event of uses, and I have arranged it in the associa- =or scope of the invention.

repairs being required, it is only necessary to remove the eye 10 and'with it the apron 10, and substitute a new porcelain part shown v in Figs. 3'and 4. The removal may be facilitated by applying heat to the flange 5 sufii- 7n cient to soften the shellac binder and permit the porcelain element to be readily removed without crushing it. A new porcelain eye and apron may thereupon be cemented in position, as shown. A repair of this character 7 would take few minutes to make, but as a matter of fact would seldom be required.

While I prefer to make the eye and apron of porcelain and highly glazed, the same may be made of other vitreous materials, such as glass. Furthermore, this eye and apron may be formed of hard sheet steel'stamped to the proper shape and having its surface enameled. In a similar manner, sheet steel stamped in the proper shape and highly polished may be tempered to give it great hardnessand used in place of the porcelain or vitreous thread guide. I do not restrict myself to the particular material employed for the apron and eye, but it should in all-cases present a harct and very smooth surface.

My improved thread or yarn leader, comprising the apron and eyelet, may be employed in thread guides adapted for various tion shown by way of example only, the same being specially adapted for use with fullfashioned knitting machines.

It will now be apparent that I have devised a novel and useful construction which emm bodies the features of advantage enumerated as desirable, and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be. understood that I do not restrict myself to the details, as the same are susceptible of modification in various particulars without departing from the spirit Definition :The words thread and yarn are used as equivalents and synonyms throughout the specification and claims.

Hayingthus described my invention, What I claim and desire to secure by Letters Patl. A thread or yarn guide, comprising a support having an aperture through the same, combined with an apron portion having a laterally extending eye portion through 12" which eye .portion and over which apron the thread or yarn travels, said laterally extending eye portion fitting through the aperture in the support, and the fiat guiding surface of the apron being very hard and having a high polish, combined with a flat tension spring parallel to the apron and adapted to clamp the thread or yarn upon said apron.

2. The invention according to claim 1,- wherein further, the apron is adjustable over the surface of the support with the eye portion acting as a pivotal axis for the adjustment and the parts united in adjusted fixed position by cement.

The herein described thread or yarn guide consisting of the combination of a, frame having two arms, each of the said arms having a guide eye formed therein, a vitreous yarn supporting and guiding member-carried by one of the said arms; and means for pressing the yarn carried by the said yarn guide against the said guiding and supporting member; the said yarn supporting and guiding member consisting of a substantially flat apron yarn supporting and guiding'portion attached to the said arm intermediate the said eyes. a laterally extending nodule having an aperture formed therein attached to the said apron portion and extending into and attached to I the walls of the said eye formed in the said apron supporting arm, the apertures of the said two arm eyes being arranged atan angle to each other and the plane of the said apron being directed toward the eye of the nonapron arm and acting to support the thread intermediate the said eye portions.

4. The herein described thread or yarn guide consisting of the combination of a frame having a plurality of arms, each of said arms having a guide eye formed therein, a yarn supporting and guiding apron having a thread bearing and guiding surface made of a hard, smooth substance carried by one of the said arms intermediate the said eyes and contiguousto one ofsaid eyes, whereby a' smooth. easily renewable bearing surface is provided for the said thread intermediate the said eyes, and means for pressing the yarn carried by the said yarn guide against the said guiding and supporting member. v

5. The herein described thread or yarn guide for a flat bed knitting machine consistingof the combination of aframe having a spring carrying arm, having a guide eye formed therein, and an apron arm havlng a guide eye formed therein a yarn supporting and guiding apron having a thread hearing and guiding surface made of a hard smooth substance intermediate the said-eyes and contiguous the said apron arm eye carried by the said apron arm, the said apron member having a laterally extending nodule formed thereon, the said nodule having a guide eye formed therein, the said nodule extending into and attached to the walls of the said eye formed in the said apron arm: and a flat spring having one-end fixed to the said spring arm and its free end extending over and normally pressing against the said varn supporting and guiding apron,

' 6. The herein described thread'or yarn guide for a flat bed knitting machine consisting of the combination of a frame having-a spring carrying arm, having a guide arm against the diate the said eyes and contiguous to the said apron arm eye, the plane of the said apron member extending toward the said spring arm eye, the said apron member having a laterally extending nodule formed thereon, the said nodule having an eye formed therein, the said nodule extending into and attached to the walls of the said eye formed in the said apron arm; and a flat spring having one end fixed to the said spring arm and its free end extending over and. normally pressing bearing and guiding surface of the said apron member.

.7; As an article of manufacture an element for use as a guide and yarn supporting apron in a yarn guide for textile machinery having a plurality of arms each having a guide eye formed therein through which yarn is adapted to travel and means for clamping the said yarn,the said apron consisting of a main guide member having an apron portion madeof a hard smooth substance over which the yarn is adapted to travel and. to form a bearing surface for the said clamping means, and a nodule, having an aperture formed therein,- extending I laterally from the said apron member, the said nodule being adapted to be inserted into andform an integral partof one of the said eyes.

' therein through which yarn is adapted to travel the said eyes being at an angle to each other,-the said apron consisting of a substantially flat, apron guide and bearing portion over which thread is adapted to travel, and a nodule having a guide eye formed therein extending laterally from the said apron member, the said nodule being adapted to beinserted into and form an integral part of one of the said arm guide eyes, the bearing surface of the said apron guide and nodule guide eye being formed of hard, smooth, vitreous material.

9. 'In a thread oryarn guide,-consisting of the combination of a spring carrying arm having a guide eye formed therein, an apron carrying arm having a guide eye formed therein, and a spring having one end fixed to the said s'pring arm audits free end nor: mally pressing against the'said apron carrymgarm and the yarn carried by saidapron carrying arm,-a yarn supporting and gu1d- 8. As an article of manufacture an elementsaid eyes, thesaid apron member consisting of -an apron portion having a substantially flat,

smooth vitreous surface intermediate the two said'eyes and contiguous, to the said apron arm eye, a nodule, having an'aperture formed therein, extending laterally from the said apron member into the said apron arm eye and connected to the Walls of the said apron arm eye.

10. In a thread or yarn guide,--consisting of the combination of a spring carrying arm having a guide eye formed therein, an apron,

carrying arm having a guide eye formed therein, and a spring having one end fixed to the said spring arm and its free end normally pressing against the said apron carrying arm andthe yarn carried by said apron carrying arm,a yarn supporting and guiding apron,

comprising the bearing surface for the said yarnand spring, carried by the said apron carrying arm intermediate the two said eyes, the said apron member consisting of an apron portion having a substantially flat, smooth vitreous surface intermediate the two said eyes and contiguous to the said apron arm eye, a nodule, having an aperture formed therein, extending laterally from the said apron member, into the ,said apron arm eye and connected to the walls of the said apron arm eye, the end of the apron most distant from the said eye being provided with a rounded edge extending transversely of the length of the apron over which and the apron the thread or yarn is guided to the said eye. In testimony of which invention, I here unto set my hand.

7 FRIEDRICH ALZ.

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