US2772535A - Rings for spinning machines - Google Patents

Description

1956 NORIO KOBAYASHI 2,772,535

RINGS FOR SPINNING MACHINES Filed May 16, 1951 2 Sheets-S he et l 5 2 Fig.1

1956 NORIO KOBAYASHI RINGS FOR SPINNING MACHINES 2 Sheets-Sheet 2 Filed May 16. 1951 United States Patent 2,772,535 RINGS FOR SPINNING MACHINES Norio Kobayashi, Kami Kyo-ku, Kyoto City, Japan Application May 16, 1951, Serial No. 226,607 Claims priority, application Japan June 19, 1950 2 Claims. (Cl. 57119) This invention relates to an improvement in the r ng for spinning machines and more part1cularly to a ring having no outside flange.

The object of this invention isto provide a novel rmg which facilitates the traveler to run smoothly aroundits periphery maintaining alwaysthe most stable condltion in any position and also facilitates easy engaging and disengaging operation of a traveler without causing 1ts undue deformation and break-down.

Another object of this invention is to save the material necessary for manufacturing the mug and to facilitate the use of the best material as desired and to provide a splendid ring of higher accuracy at a reduced cost.

Further object of this invention is to prevent the damage and loss of travelers and to facilitate the quick replacement of a traveler, thereby increasing the splnnmg speed and efliciency. p

Heretofore known rings are generally provided with outside and inside flanges to engage a traveler and to prevent the traveler from disengaging and flying out of the ring. In such rings, there are troubles 1n attachlng and disengaging the traveler over these flanges and also in effecting smooth operation owing to the irregularity of contact points and the frictional resistance between the inside and outside flanges and the traveler, andelso due to scratching the outer wall of the ring by the up end of the traveler leg. Such ordinary rings requlre a larger mass of material due to the outside and inside flanges and are more difficult to manufacture with fine finish and accuracy due to the presence of the outside flange.

The above mentioned disadvantages can be avoided by the present invention and the various merits are obtained as will be understood by the following descnption in connection with the accompanying drawings, in which Fig. 1 is a partial sectional elevation of a ring embodying this invention as fitted to the ring frame;

Fig. 2 is a plan view of Fig. 1;

Fig. 3 is a partial sectional view of the ring of this invention in an enlarged scale for illustrating the principle of this invention;

Fig. 4 is a partial sectional view of the ring of this in vention showing a manner of operation of the traveler;

Fig. 5 is a similar view for an ordinary ring;

Fig. 6 is a similar view taken for the explanation of a manner of engaging the traveler with the ring of this invention;

Fig. 7 is a similar view for an ordinary ring;

Fig. 8 is a partial sectional elevation of a double flanged ring embodying this invention;

Fig. 9 is a similar view showing a different holder attachment;

Figs. l0-a, b and c are partial sectional views showing several forms of the ring embodying this invention made by cold rolling and pressing a steel tube.

Now referring to Fig. l, 1 represents a ring embodying this invention having the specially formed working top 2. 3 represents a stopper preferably made of steel 2,772,535 Patented Dec. 4-, 1956 wire or slotted elastic ring to be fitted on the ring 1. 4 designates a ring frame and 5 is a traveler.

The essential feature of the ring of this invention lies in that the ring has no outside flange and an inside projection or so-called inside flange A of special curved form is provided for the top of a plane cylindrical piece as shown in Fig. 3. According to this invention, the outside flange in an oridnary ring as shown by the dotted line B is cut oflf and the corresponding portion is shifted or projected upward as shown by A and its rounded top is connected to the rounded edge C of the inside flange 6 by means of a straight line D or a suitable curve D. When curve D is followed, a gradually converging inverted conical surface is formed. The apex A or the top surface may be projected somewhat outward of the ring as shown by A if desired.

In order to prevent the traveler 5 from disengaging and flying out of the ring during the high speed spinning operation, the top projection and the inside flange should be determined as follows:

Let M be the length of the opening of the traveler 5, that is, the distance between the tip ends of the traveler legs; N be the allowance for unavoidable irregularity in the manufacture of travelers including permanent set caused by expanding the traveler when it is put on the ring and the deflection caused by the pull of spinning thread due to the centrifugal force, then the sum of M and N is the minimum distance necessary for preventing the traveler from disengaging and flying out of the ring. 5 represents the traveler located in a position when the thread is wound around the upper part of a bobbin while 5 represents that in a position when the thread is wound around the lower part of the bobbin. Thus the top A of the ring of this invention should be extended beyond the point a which is an intersection of locus of the point b, that is, an arc ba described with the radius M N about the centre 0 and the outer surface of the cylinder. For instance, the points a, a" or a is connected with the end C of the curved inside flange 6 by means of a straight line D or curve D, thereby forming the effective surface of the top section. Thus the ring according to this invention can be formed in various ways to satisfy the condition that the traveler can never get away and fly out of the ring during the high speed spinning operation without the outside flange which had been indispensable in all kinds of heretofore ordinary rings.

It will be noted that the ring of this invention has plane cylindrical outside surface by transforming the outside flange in the heretofore known ring upwards and the top inner surface is sloped and merges to the rounded edge C of the inside flange 6, thereby eliminating the outside flange B in ordinary rings and forming the curved ridge projection, that is, the inside flange to prevent the traveler from flying away and disengaging out of the ring during the spinning operation. As seen from Fig. 3, the traveler 5 at a position when the thread is wound around the upper part of the bobbin makes contact with the inside flange 6 of the ring at the points 0 and d, and the traveler 5' when the thread is wound around the lower part of the bobbin makes contact with the inside flange s at the points e, f and some other points such as a or A, thus the free end g of the outer leg of the traveler does not come in touch with the outside surface of the ring and there remains always some clearance i as shown in Figs. 3 and 4. On the other hand, in case of ordinary rings having outside and inside flanges B and B as shown in Fig. 5, the tip g of traveler leg makes contact with and scratches the outer surface of the ring and causes friction. By the reason as above mentioned, the ring of this invention enables the smooth and stable sliding rotation of the traveler guided by the inside flange and its upward sloped projection which effects the function of outside flange as well as the essential part of the ring, without scratching the outside surface of the ring by the tip of traveler leg and the traveler can slide along the ring by making contact with the inside flange at several points over Wide range of its surface at any position of the traveler under operation.

The elimination of the outside flange according to this invention results the saving of ring material and allows the use of a steel tube or steel plate in manufacturing the ring and mass production as well as more accurate finishing using better material so that a splendid ring may be obtained according to this invention which had never been realized before.

In the ring of this invention, the traveler can be very easily put on by merely forcing it down along the inside flange as shown in Fig. 6 with a smaller expansion of the opening between legs of about 1.00 mm., and the opening is never expanded more than the necessary minimum limit. On the contrary, in an ordinary ring having outside and inside flanges B and B as shown in Fig. 7, one leg of the traveier is engaged with the outside flange and then the other leg is pulled in the direction as shown by the arrow to pass over the inside flange so that the traveler is often broken or deformed, thereby resulting irregular sliding and the additional expansion of the opening of the traveler necessary to pass over the flanges is about 1.76 mm.

The principle of this invention can be applied to the upper and lower ends of a ring to make so-called double tla ged ring '7 as shown in Figs. 8 and 9, which has a steel band holder 3 or an annular holder 8 fitted thereon.

The ring of this invention can be made of a steel plate or steel tube by cold rolling to form the essential working part of the inside flange 9 as shown in Fig. la, b and c and a holder 18 made, for instance, of cast iron can be fitted on the ring in order to reduce the cost.

The lack of outside flange in the ring according to this invention facilitates its quick and mass production from a special steel tube by means of a special automatic machine with accurate and fine finish.

Though I have shown and described in the foregoing several embodiments of my invention, yet it will be understood that my invention is not limited to those shown and described, but various modifications may be done without departing from the spirit of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A ring for ring spinning machine, which comprises an external body portion of plane cylindrical shape, a rounded top periphery and an inwardly projecting flange formed below said top periphery and having a rounded apex, which is formed by connecting said rounded top periphery and said rounded apex of said inwardly projecting flange to each other by an inverted substantially conical surface, said inner flange being so determined with relation to a traveler, which has a substantially semicircular stem portion and two legs bent toward each other to leave an opening therebetween, that said traveler can be retained on said ring by said rounded top periphery and the rounded top of said inwardly projecting flange during running of the traveler on the ring leaving a definite clearance between the end of the outer leg of the traveler and the outer surface of the ring, thereby preventing scratching the outside wall of the ring by the top of the outer leg of the traveler.

2. A ring for ring spinning machine, which comprises a plane cylindrical ring body having a rounded top periphery and an inwardly projecting flange which is formed by an upper surface extending from the rounded top surface downwards as an inverted substantially conical surface and a lower convex curved surface terminating at the inside surface of the ring, the top of said plane cylindrical body being located above the point of intersection of a circular are drawn with the center at the base of said inwardly projecting flange and with a radius equal to the distance between both ends of the open legs of a traveler and with a definite allowance for irregularity of the traveler and for its expansion due to the centrifugal force when running, thereby preventing the flying away of the traveler.

References Cited in the file of this patent UNITED STATES PATENTS France Mar. 29, 1932

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