US1233420A

US1233420A - Laminated, cohesive, interwound fabric constructed in tubular and annular form.

Info

Publication number: US1233420A
Application number: US86312714A
Authority: US
Inventors: Lawrence A Subers
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-09-23
Filing date: 1914-09-23
Publication date: 1917-07-17
Anticipated expiration: 1934-07-17

Description

L. A. SUBERS.

' LAMINATED, COHESIVE, INTERWOUND FABRIC CONSTRUCTED IN TUBULAR AND ANNULAR FORM.

APPLICATION FILED SEPT. 23,1914.

Patented July 11',- 1917.

2 SHEETS- SHEET I 1 Y All M23-7555115 Z Ezaf W A E?" /y/w L. A. SUBERS. INTERWOUND FABRIC CONSTRUCTED IN TUBULAR AND ANNULAR FORNI.

L-AMINATED, CHEslv APPLICATION FILED SEPT. 23| |914.

Patented .1 uly 17 2 SHEETS-SHEET 2.

In.. Fn

I umu iinrrnh smarte ramena prision,

LAWRENCE A. SUBERS, OF EAST CLEVELAND, OHIO. l

LAMINATED, COI-IESIVE, INTERWOUND FABRIC CONSTRUCTED IN TUBULAR AND i ments in a continuous band formed of laminated, cohering, interwound, fibrous elements, and of the tubular, flattened type having selvage edges and described in Letters Patent granted heretofore to Lawrence A. Subers, and bearing number 1,017,271,

' and the aggregate strength of all the eo-mand date of issue of Feb. 13, 1912, in which series of fibrous elements are wound in tubular form to kcross each other at prede termined angles, and in which'the angle can be controlled during the construction of the band to lpermit of varying the amount of subsequent expansion or elongation o-f the fabric in which the band is afterward incorporated, by which means a substantially uniform amount of expansion and elongation throughout the fabric can be obtained,

ponent layers can be utilized.

The features of novelty and improvement which characterize the present invention have reference to a band of a predetermined normal width and having periodically widened portions arranged at regular intervals' thereon, yand which is adapted to be incorporated in a tubular annular fabric such as a pneumatic tire, and in which the widened portions are so positioned that when the band is continuously wound upon an annular mandrel the wider portions will bepositioned upon the outer circumference or tread side of the fabric and the portions of normal width will be ypositioned upon the inner circumference or rim side thereof.

The band is gradually tapered on both sides from the normal narrow portions in both directions toward the widest portions in such a manner that when the band is wound upon the mandrel the edges of the adjoining members will abut and make the fabric continuous and when removed from I ANNULAR FORM.

Specication of Letters Patent. Patented July 11.7. 191.7, Application led September 23, 1,914. Serial No. 863,127.

the mandrel the shape will correspond substantially with that of the finished tire without leaving any openings between the bands upon the outer circumference or tread side of the tire. p

The invention further comprises a band formed of laminated, cohering, interwound fibrous elements, wound upon a mandrel with the elements crossing each other at a normal angle at the narrowest portions, theangle f crossing being gradually increased as 1t approaches portions of greater width and thence gradually decreased until the l normal angle is resumed. The portions of greatest width recur at regular intervals in the band and are intermediate of and alternate with the narrow portions and are pref-` erably positioned centrally between them.

The invention is illustrated or eXemplified in the accompanying drawings, is hereinafter more fully described, and specifically pointed out in the claims.

-Figure 1 is a plan view of a portion of a band constructed as described, and showing periodically widened portions therein; Fig. 2 is an enlarged view of a part thereof showing one of the periodically widened portions and the change of the angle of winding therein from the normal width as exhibited in the narrow portions; Fig. 3 is a transverse section of the saine, enlarged, showing a central band of solid rubber; Fig. 4 is a side elevation of a portion of fabric such as a tire, constructed in tubular and annular form from series of continuously wound bands such as described and having their widest portions positioned upon the tread or outer side and having their narrow portions '(which are of normal width) positioned at the inner or rim sid-e of the tire. Fig. 5 is a plan of a series of forming rolls through which the compressible band is propelled to form the band into continuously repeated and regularly spaced portions of normal and reduced width, adapted for applying to the respective tread or crown and rim surfaces kof a pneumatic tire or casing; Fig. 6 is a side elevation thereof; Fig. 7 is a front elevation of one of the 8 is a plan of the band after passing through the rolls, showing laterally compressed edges.

In these' views A represents a continuous band formed of series of parallel fibrous elements or minor bands a, a', which are wound upon a suitable mandrel. One series of parallel fibrous elements crosses the other at a normal angle at the portion B which constitutes the narrow portion of the band and is repeated at regular intervals. The computed v length of each interval is determined by the length of band required to encircle the tire once, when the band is inclined at the angle in which' it iswound in the fabric, as shown in Fig. 4.

Intermediate of the narrow portions of normal width are shown the wider portions C which also recur -at regular intervals and in which the angle of inclination of the fabric elements is gradually increased up to a point of greatest width and thence gradually decreased to the normal angle.

This change in the angular relation of the series of fibrous elements does not produce an abrupt change in the shape of the band, but the sides of the band are gradually tapered in both directionsl from the normal positions to the broadened positions.

The importantfeatures to be obtained are to completely cover with the broadened portions of the band the surface of the outer or tread side of the tire (whichis of greater area than the surface of the inner or rim side thereof since it is of greater diameter) and also to so shape the abutting edges of parallel bands that they will make contact with each other at all points of theirllength from tread side to rim side, and produce thereby a continuous, unbroken fabric.

The manner of producing cohesion of the several bands, and of producing cohesion of theelements in each band is accomplished by methods described in my previous applications and patents and does not require further description here. l

I believe myself to be the first to provide a band of this character and all variations or improvements and additions to the structure herein described are believed to be included in the invention and to be within the scope of the, appended claims.

For instance at D, Fig. 4, at one extremity ofthe annular fabric the beginning of a slit is shown which when completed permits the edges to be separated at the rim side if desired, so that the fabric can be incorporated in a clencher or straight side tire, or the fabric can be employed without slitting von the rim side` as when `used as an integralinner tube or for corresponding uses. In Figs. 7 to 10 inclusive the method of forming i the fabric i's exemplified.

Here R, R are sets of rolls over which the fabric band vA passes,one set being cirh cumferentially grooved and over which the edges of the band arev periodically and laterally compressed. In Fig. 9 one of one set of rolls is shown having a groove alternately normal and contracted in width, the

narrow portion of which is shown at n, and the wide portion of which is diametrically opposite the narrow portion and is shown in dotted linesy at w.

The sets of rolls R, It are operatively connected by means of spur gears Gr G of equal number of teeth mounted upon roll shafts S, S, and a band wheel X and a band vY supply the power.

As the band traverses the grooves in the rollers it is laterallyT and periodically compressed in the narrow portions n, a, and retains its normal width in other portions.

The necessary amount of radial and lateral compression of the fabric band upon the rolls to cause it to conform to the narrow portions of the grooves is obtained by placing adjoining pressure .rolls R in relatively close contact with the other rolls and conining the band between the flanges R', R upon the grooved sets of rolls.

The flanges upon the grooved rolls overlap the edges of the pressure rolls, as shown in the figures, and the edges of the pressure rolls are alternately normal in width and narrowed to correspond to the alternate normal and narrowed portions of the grooved rolls and all rolls are of equal diameter. That is to Say the rolls are respectively male and female in character.

Having described the invention, what I claim as new and desireJ to secure by Letters Patent is:

l. In a continuous laminated-cohering-interwound fabric band, series of interwound, parallel, brouselements crossing each other at a predetermined angle and at regularly repeated normal positions, said series of` elements crossing each other at a different angle at regularly recurring points intermediate of said vnormal positions, whereby said band is alternately of normal width and laterally expanded,r substantially as described.

2. A continuous hollow attened band composed of series of unwoven interwound cohering fabric elements, said band having. narrow portions arranged at regular recurring positions therein, alternating with intermediate broader portions centrally positioned between said narrow portions.

Y 3. A continuously wound fabric band, comprising 'a attened tube, composed of series of fibrous elements-interwound and cohering together, the angle of crossing of said fibrous elements being periodically normal and periodicallychanged from said normal angle, whereby the band is alternately of normal width and broadened at regularly recurring intervals.

4. A continuous fabric band composed of fibrous elements cohering in vulcanizable material, said band having constantly recurring portions of normal width and constantly recurring portions of greater Width and intermediate of the portions of normal Width said elements being arranged in noninterlocking layers.

5. A continuous band for incorporation in an annular and tubular fabric, comprising series of parallel cohering fibrous elements Wound at an angle therein, and series 0f similar cohering fibrous elements inter- Wound with the aforesaid fibrous elements and crossing the same at predetermined angles, at regularly recurring normal positions, said series of bands crossing each other at predetermined different angles at regularly recurring points intermediate of said normal positions.

6. A continuous flattened fabric band having constantly recurring portions of normal width and constantly 'recurring portions of greater Width intermediate the portions of normal Width, said band comprising inter- Wound fibrous elements and being of uniform compactness.

7. As an article of manufacture, a continuous fabric band comprising fibrous elements of substantially uniform dimensions 25 throughout their lengths7 said band having constantly recurring portions of normal Width and constantly recurring portions of greater Width intermediate the portions of normal Width and being of uniform compactness, said elements being in non-interlocking layers.

In testimony whereof, 'I hereunto set my hand this Sept. 21 1914.

LAWRENCE A. SUBERS. ln presence of- ERNEST MosMAN, ADAM MEYER.