US2023438A - Drawing and spinning roll - Google Patents

Description

mm, 159 1930 w, F RAY EJ923 43 DRAWING AND SPINNING ROLL Filed NOV. 9, 1953 Patented Dec. 10, 1935 DRAWING AND SPINNING ROLL William E. Bay, Chicago, Ill., assignor to Frank G. Karg, Chicago, 111.

Application November 9, 1933, Serial No. 697,247 3 Claims. (Cl. 19-143) UNITED STATES PATENT OFFICE This invention relates to improvements in roller construction for rolls such as are used in the drawing and spinning frames in worsted and woolen manufacture and it consists of the mat- 6 ters hereinafter described and more particularly pointed out in the appended claims.

The roller with which my invention is more particularly concerned, is the upper roller for drawing and spinning frames used in the worsted and woolen mills and which peripherally engages and is frictionally driven by a positively driven, associated lower roller. As heretofore made, such an upper roller was provided with a leather facing that had certain inherent 15 disadvantages, which are overcome by my im proved roller construction.

A leather faced roller for this purpose, has a relatively short period of usefulness, as it invariably grooves under sliver or yarn action and 20 most be refinished from time to time, to true up the same. Again, such a facing is glued on its cylinder or band and consequently the facing at times becomes loose and must be resecured thereto. Also, leather faced rollers, during 01f 25 periods of operation, develop flat spots on that side left engaged with its associated driving roller. When started, such fiat spots require several hours running of the roller before they are ironed out and disappear. Such flat spots 30 result in producing uneven portions in the sliver or yarn operated upon.

Leather faced rollers for this purpose therefore, require frequent attention to keep them in operating condition. Even with the best of attention they are not entirely satisfactory for the reasons stated.

One of the objects of the present invention is to provide an improved roller for this purpose, which is not only cheaper to manufacture, but 40 which has a greater period of usefulness without requiring frequent attention.

Another object of the invention is to provide a roller for this purpose which shall have a great- 45 er coefficient of adhesion than those heretofore provided.

A further object of the invention is to provide a roller of this kind which will not groove under sliver or yarn action} and which will not 5 readily take on such a polish as to reduce its frictional or adhesion characteristics.

Again, it is an object of the invention to provide a roller of this kind having a facing which is unaffected by temperature changes and which 55 is so intimately connected to its associated band or cylinder as to preclude its ever becoming loose thereon.

The above mentioned objects of the invention, as well as others, together with the many ad- I vantages thereof, will more fully appear as I 5 proceed with my specification.

In the drawing:

Fig. l is a view, in end elevation, of a roller embodying the preferred form of the invention.

Fig. 2 is a transverse sectional view through a part of the roller as taken on the line 22 of Fig. 1.

In general, my improved roller includes an internal metallic cylinder of the desired axial length with an external facing of rubber preferably vulcanized thereto. The rubber advantageously may be oil resisting rubber compound having a density of approximately 81. I have dicovered that such a facing does not readily groove under sliver or yarn action and does not polish under the action of being frictionally driven from its periphery.

Referring now in detail to that embodiment of the invention, illustrated in the accompanying drawing:

I indicates, as a whole, a metallic cylinder of the desired axial length and 2 indicates an endless and seamless external facing thereon, secured to the cylinder in the desired manner. Preferably, the facing is made of an oil resisting rubber compound having a density approximating 81. Said facing, which has a radial thickness greater than that of the cylinder, also has an axial length greater than that of the cylinder. The facing 2 is so arranged with respect to the cylinder as to be flush with one end thereof and to extend beyond the other end thereof as at 3, all as best shown in Fig. 2. The extended portion 3 has an internal diameter approximating the internal diameter of the cylinder so as to be substantially flush therewith.

The facing is preferably secured to the cylinder as by vulcanizing the same thereon, in a suitable mold.

With such an arrangement, it isassured that the radial thickness of the facing will be uniform and its external peripheral surface will be truly cylindrical. Thus it is balanced to run true under high speeds and therefore, it will not chatter or vibrate when peripherally and frictionally engaged with its associated roller which drives the same.

Such a facing does not polish under the peripheral driving engagement with its associated roll and as it runs true it will not tend to develop a sliver or yarn groove. Ordinarily the roller bears with a predetermined pressure on its coacting driving roller and during the off periods of operation, a leather faced roll will develop flat spots which require several hours running before they become ironed or smoothed out. In the present instance, due to the character of the material, of which the facing is made, fiat spots do not develop.

With such a roller structure, a more uniform sliver or yarn results and one wherein high spots or portions of increased thickness are avoided.

The roller may not only be made at a cost less than that of the leather faced roll now used for the same purpose but, it has a longer period of usefulness without grooving, flat spotting and polishing. Hence, servicing is largely eliminated.

Because of the greater coefficient of adhesion which the roller of my invention possesses, less pressure is necessary to obtain the desired result when operating on the yarn. This results in a substantial saving in power.

While in describing the invention, I have re ferred in detail to the form and arrangement of the parts thereof, the same is to be considered only in an illustrative sense so that I do not wish tovbe limited thereto except as may be specifically set forth in the appended claims.

I claim as my invention:

1. A drawing and spinning roller embodying therein a thin sheet metal ring and an external facing secured thereto and having a greater axial length so as to extend at least beyond one end of the ring and formed at that end beyond said ring to provide an inside diameter substantially the same as that of said ring.

2. A drawing and spinning roller embodying therein a thin sheet metal ring and an external facing vulcanized thereon and having a greater axial length so as to extend at least beyond one end of the ring and having an inside diameter at that end beyond said cylinder, approximately the inside diameter of said ring.

3. A drawing and spinning roller embodying therein, a rubber cylnder and a thin sheet metallic ring secured in one end of the cylinder, the other end of the cylinder beyond said ring having an internal diameter approximating that of said ring.

WILLIAM F. RAY.

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