US2338847A - Method of making ribbed rolls for slashing machines and other textile machines - Google Patents

Description

Jan. 11, 1944. E. H. HANSEN 2,338,847

METHOD OF MAKING RIBBED ROLLS FOR SLASHING MACHINES AND OTHER TEXTILE MACHINES Original Filed June 13, 1941 2 Sheets-Sheet l .lnvenior. Edwin H.Hcmsen byMW&W

Jan. 11, 1944. E. H. HANSEN 2,338,847

METHOD OF MAKING RIBBED ROLLS FOR SLASHING MACHINES AND OTHER TEXTILE MACHINES Original Filed June 13, 1941 2 Sheets-Sheet 2 I 'hwenTor. Edwin H.H0nsen by/LMMJ W ATTys.

Patented 1.... 11, 1944 7 UNITED STATE mz'rnon or MAKING RIBBED norms ron smsnmo MACHINES AND o'rrmm'mx 1 TILE MACHINES Edwin H; Hansen,

Braintree, Mass, assignorv to Andrews and Goodrich, Inc., Dorchester, Mesa, a corporation of Massachusetts Original application June 397,882, now Patent 2, 1942.

Divided and' 13. 1941, Serial No. 2,285,375, dated June this application November 21, 1941; Serial No. 419,877

2 Claims. ('Cl. 29- -148.4)

This invention relates to ribbed rolls such as are used in slashing machines and other textile machines for supporting wet warp yarn as it is withdrawn from the sizing bath. Ribbed rolls are commonly used for this purpose because the wet sized warp threads are apt to stick to a roll having a plain surface, thus causing complications in the slashing operation. In the case of ribbed rolls, however, the Wet warp yarns are supported on the edges of the ribs and thus are held out of contact with the surface of the cylinder.

These ribbed rolls are usually in the nature of idler rolls and are rotated by the engagement of the moving warp threads therewith.

Such ribbed rolls are also sometimes used for supporting a travelling web of cloth as the latter is being subjected to some treatment and also for other purposes.

Heretofore, such ribbed rolls have been made with the ribs extending longitudinally thereof and parallel to the axis of the roll. If such a roll is being used in a slashing machine, for instance, and the machine is stopped with the ribbed roll in such an angular position that the warp threads are engaging two adjacent ribs, then when the machine i started up again, the warp threads are apt to slide over the two ribs without starting the roll in rotation, thusrnaking it necessary for the operator to manually start the roll in rotation in order that it may perform its function properly.

One way in which these ribbed rolls have heretofore been made is to take a steel tubing having a length corresponding to that of the roll and r having a proper diametrical dimension, and then to cover said tubing with a sheet metal envelope which has been deformed to present ribs extending from one end to the other thereof. This method of making a ribbed roll has been used especially in the case of a roll that is to be provided with an exterior surface of'non-corrosive material, such, for instance, as stainless steel, brass, etc.

Sometimes this sheet metal envelope is made in sections, each section extending the length of the roll and each being deformed to present one or more ribs extending longitudinally thereof. Such sections are placed about the steel tubing, and the meeting edges thereof are secured together, thereby making a unitary ribbed envelope for the tubing, which envelope is welded or otherwise permanently secured to the tubing at its ends.

It has also ,been proposed to make a ribbed roll by assembling in the form of a cylinder a plurality of sheet metal strips or sections which extend from one end to the other of the cylinder, and uniting the adjacent strips along their meeting edges, each strip being formed with a longitudinal rib and the united strips being interiorly supported. in some way as by means of disks.

In both of these types of ribbed rolls the exterior surface of the roll is formed by connected sheet metal strips which extend from one end to the other of the roll, each strip having an outwardly extending rib.

The object of the present invention is to provide a novel method of making a ribbed roll, such as above described, in which the rib are given a spiral shape. This is done by assembling the ribbed sheet metal section in the form of a cylinder in the usual way and with the ribs extending longitudinally and parallel to the axis of the cylinder, and then turning one end of th s envelope or cylinder structure angularly relative to the other end thereof, thereby to give the individual sections and the ribs formed thereon a spiral shape. After the ribs have thus been given their spiral shape then the sheet metal envelope is anchored permanently. to its interior support so as to preserve the spiral shape of the ribs.

In the drawings I have illustrated my invention as applied to the type of ribbed roll in which the sheet metal ribbed envelope is mounted on and thus supported interiorly by a steel tubing, but I desire to state that the invention is not limited to a ribbed roll having this particular interior support for the sheet metal covering.

Fig. 1 is an end view of a roll embodying my invention.

Fig. 2 is a fragmentary perspective view showing the ribbed envelope after it has first been applied to the steel tubing.

Fig. 3 is a similar view showing the envelope after it has been twisted on the steel tubing to give the ribs their spiral shape.

Fig. 4 is a fragmentary perspective view of one of the sections of the envelope.

Fig. 5 is a view showing the manner in which the ribs are given their spiral shape.

Fig. 6 is a longitudinal sectional view through a roll embodying my invention.

Figs. '7 and 8 are diagrammatic views to illustrate the advantage gained by using a roll embodying my invention.

The exterior surface of the roll herein shown is in the form of a sheet metal envelope 4 provided with ribs 5 and 6. This sheet metal envelope is carried by an interior support which is shown in the drawings as in the form or a tubular body member 3 which has a length equal tothat of the roll to be made and which has at each end a head 8 provided with a trunnion 1, said trunnions providing means by which the roll is rotatively supported.

The ribbed envelope 4 is herein shown as made up of a plurality of sheet metal sections 9, each of which extends the length of the roll, and each of which is deforined to present one or more longitudinal ribs 5. 7

Each section is curved to fit the steel cylinder 3, and each has one edge thereof bent outwardly, as shown at It, and the other edge bent outwardly, as indicated at II, and then bent inwardly, as indicated at I2, thereby forming between the two portions II and I2 a pocket l3 adapted to receive the wing III of an adjacent section 9. The outwardly bent edge I is referred to as a "single edge and the outwardly and inwardly bent portions II and H! are referred to as a double edge."

The sections 9 are assembled to form the complete envelope by inserting the wing or single edge IU of each section into the pocket l3 of the double edge of an adjacent section, and thereby the various sections are flexibly connected together to form a complete sheet metal "ribbed envelope encircling the tubular body member 3, as shown in Fig. 2, and in full lines, Fig. 5, in which the longitudinal deformations in the sections 9 form the ribs 5, and in which the ribs 6 are formed by the interlocking single and double edges of adjacent sections 9.

After the ribbed sheet metal envelope has thus been applied to the tubular member 3, then one end of the envelope is turned angularly about the tubular member 3, relative to the other end thereof, thereby twisting the envelope on the body member and giving the ribs a spiral shape, as shown in Fig. 3, and in dotted lines, Fig. 5.

The interlocking connection between the wing or single edge ID of each section 9 and the double edge ll, l2, of an adjacent section is suillciently loose and flexible to permit the sectional envelope to be readily twisted on the tubular member 3.

When the envelope has been twisted sufficiently to give the ribs the desired spiral shape, then the ends of the envelope are permanently secured to the ends of the body member 3, thereby maintaining the envelope in its twisted or spiral shape. This can be accomplished by welding the ends of the sheet metal envelope to the ends of the body member 3, or in any other suitable way.

If desired, also, the portions II and 12 of each rib may be spot-welded to the wing [0 which is confined between said portions.

In Figs. '7 and 8 there is shown diagrammatically one advantage which results from the use of this invention. In said figures, 2 indicates diagrammatically a ribbed idler roll over which a sheet of warp yarns I is moving in the direction of the arrows. This roll 2 is shown as having ribs 5 and 6 thereon which engage the warp yarns.

Assuming that this roll, shown in Fig. 2, has straight ribs extending parallel to the roll axis and is operating in a slashing machine with the wet warp yarns l5 travelling over and resting on the roll, and that the machine was stopped with the roll 2 in the position shown in Fig. 8, in which the warp threads l5 rest on two adjacxant ribs. then, when the machine is started up again, the

warp threads are apt to slide across the edges 15 of the two ribs without starting the roll 2 in rotation.

On the other hand, if the roll should stop in the position shown in Fig. 7 with the warp threads resting on the peak of a single rib, then, when the machine is started up. the drag of the warp threads on the rib will readily set the roll 2 in rotation.

With my improved roll, wherein the ribs have the spiral arrangement, there will always be a sufllcient number of warp threads resting on the peak or edge of one or more ribs, as shown in Fig. 7 to start the roll in rotation when the warp threads begin to move across the roll upon starting the machine, regardless of the angular position which the roll had when the machine was stopped.

While I have herein illustrated a roll in which the sheet metal envelope 4 is mounted on and interiorly supported by a tubular member 3, yet the invention is not limited to a roll in which the fabricated envelope has a support of this particular type since my improved method can be practised in connection with a roll in which the fabricated sheet metal envelope is mounted on and supported by aninterior support 01' some other construction than that herein illustrated.

In a broad sense, the sheet metal sections 9 may be considered as rib members, inasmuch as each is formed with a rib, and therefore, my improved method comprises assembling a plurality of rib members in circumferential relation about a central support and then turning one end of each rib member about the axis of the support with relation to the other ends of said rib members, thereby to give each rib a spiral formation.

Although a ribbed roll embodying my invention has special advantages when used in a slashing machine, or other textile machine, the invention is not limited to the use of the roll in such a machine, and a ribbed roll embodying my invention is capable of use in various other arts besides the textile art. This application is a division of my application, Serial No. 397,882, filed June 13, 1941, which matured into Patent 2,285,375, June 2; 1942.

I claim:

1. The method of making a ribbed roll which consists in forming a readily twistable cylindrical sheet metal envelope with a plurality of exterior ribs which extend longitudinally thereof substantially parallel to the axis thereof, inserting into the envelope a rigid cylindrical body member of the same length as the envelope and of a diameter to fit the interior of the envelope, turning one end of the envelope angularly about the body member while retaining the other end of the envelope in fixed position relative to the body member and while also maintaining the body member in its normal torque-free condition, thereby to give the ribs a spiral shape, and while the envelope is held in its twisted condition securing each end thereof to the corresponding end of the rigid torque-free body member, whereby such rigid body member constitutes the support for the envelope and holds it in its twisted shape.

2. The method of making a ribbed roll which comprises assembling-in cylindrical form a pluralityof sheet metal strips which extend from one end to the other of the cylinder and each of which is provided with a rib extending longitudinally thereof, thereby providing a cylindrical ribbed envelope, inserting into the envelope a rigid cylindrical body member of the same length as the envelope and of a diameter to fit the interior of the envelope, turning one end of the cylindrical envelope angular-1y about the 1 body member while retaining the other end of the en-' velope in fixed position relative to the body memher and also maintaining the body member in its normal torque-free condition, thereby to give the ribs a. spiral formation, and while the enveiope is heid in its twisted condition securing each end thereof to the corresponding end of the rigid torque-free body member, whereby such rigid body member constitutes the support for the envelope and holds it in its twisted shape.

EDWIN H. HANSEN.

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