USRE15174E - Assionob to fowlxjuwilliahs coupant - Google Patents

Description

J. AQBARNES.

BLOW-OUT BOOT.

APPLlCATlON FILED JUNE 23, I921.

Reissued Aug. 9, 1921.

g/OiTiI fl. Barnes, 2 40m flzwa UNITED-STATES PATENT OFFICE OF DALLAS, TEXAS.

BLOW-OUT BOOT.

To all whom-it may com-em:

Be it known that I, JOHN A. BARNIB, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Blow-Out Boots, of which the following is a specification.

My invention relates to blow out boots such as are used within a pneumatic automobile tire to strengthen and reinforce the tire at a point where it has become weakened due to a blow-out or hole therein. 'Such articles heretofore used have been open to many and various objections and have been a continual source of trouble while in use. Prominent among the disadvantages ofthe usual construction of these boots is that when this boot is disposed within a tire as a reinforce for a blow-out hole therein, and the tire is rotating while in position on the wheel of a moving motor vehicle, this former type of boot has the tendency to create anuintermittent valvelikesuction action' at thefblow-out hole at the times when the load comes on and off at'this point during the rotation ofthe wheel.v

As a liesult of this valve like action, water,

dirt,"sand, and other foreign substances are sucked 'intothe space between the blow-out tjand the inner surface of the tire and eventually work around until theylodge between the inner surface of the tire and the innertubeltherein. The destructive results both to the inner tube and to the tire are considerable, and very often total ruination of the tube. or the-tire, or both is caused.

. One-object of my invention, therefore, is to provide a. blow-out boot which by reason of its structure will effectually prevent this valve-,like'action, and will act as a gasket to close the blow-out hole in the tire casing at all times during the rotation of the wheel carrying the tire, and thereby exclude all water and foreign substances from entrance into the interior of theftire casing. I

Another object of my invention is to provide a blow-out boot so-constructed as to be, V

* coming pinched at that point.

of greatly improved wearing qualities, which is of such a construction that the fabric of i which the boot is'largely composed does not come into contact with the road and thereby is not injured as is the case with the usual types of these boots.-

A further object of my invention is to provide a blow-out boot which will not creep,

Specification of Reissucd Letters Patent. Reissued Aug; 9, 1921.

Original ll'o. 1,864,677, dated lanuary 4, 1921, Serial No. 384,395, filed reissue filed Iune 23, 1921. Serial No. 479,924.,

Kay 26, 1920. Application for particularly when the pressure of air within the inner tube is low, but which will remain in the'position'within the tire in which it was placed and continuously reinforce the tire at a weakened portion of the same.

I will now proceed to describe in detail the invention by which I obtain these advantageous results. I

In the drawings forming part of this specification and in which like reference characters indicate like parts in the several views:

Figure 1 is a plan view of my improved blow-out boot with the two edges laced together.

Fig. 2 is a plan to its full width.

Referring to the drawings, numeral 1 indicates a blow-out boot made in accordance with my invention, the body of which is conview of the same extended structed of a plurality of laminations of fab- I arrangement, which serves as a means whereby the edges of the boot may be joined, surrounding the inner tube and completely inclosing the same throu hout the length of the boot. The particu means which I have illustrated comprises a series of eyelets 2 formed in both edges of the boot, and which are adapted to receive a lace 3 which is passed alternately throughjtheeyelets and joins the two edges together. as clearly shown in Fig.- 1 thus making an absolutely secure fastening that lies snugly and flatly against the rim when the tire is thereon, yet has suflicient play to allow the boot to cling to the inner tube around which it is laced and thus prevent the boot from creeping on the tube.

A protecting stri 5, preferabl formed of several layers of abric, is attac ed to the boot along one of its edges by arline of stitching and is adapted, when the boot is laced around a tube, tobe interposed between the tube and the locking members so as to prevent any possibility of the tube bewlI-LIAIS COMPANY,

ar. lacing Attached to the outer side of the lamina tions of fabric composing the boot is a sheet of rubber, 6. This sheet of rubber, or apron, as I prefer to call it, is attached to the boot by twolines of stitching, 6"6 at op-' poslte edges, and throughout the remainder of its area is loose upon the boot and in- I depe ndent therefrom. This aprn is constructed for the purpose of preventing any. b

, valve like action of the boot and when in casing has occurred, and by its elasticity position adjacent the inner surface o f the tire casing, lies smoothly between the inner tube and the inner side of the casing at the point where the puncture or blow-out in the fits so snugly over the hole when the tube is inflated as to act as a gasket and stop the.

valve like action or suction that draws water, sand, dirt and other foreign substances into the space between the blow-out boot and the casing, unless thus prevented. This rubber apron also protects the fabric of the boot from contact with the road and the subsequent wear thereof, especially when the hole in the casingis of considerable size. Furthermore, this apron prevents the boot from creeping with relation to'the casing, particularly when the air pressure within the inner tube is low, and retains theboot in its proper position at all times. vision of this apron as an independent ele ment of the boot, attached thereto merely by .the two lines stitching, is the particular novelty of my invention, and the means whereby the above mentioned highly desir-.

able improvements are effected.

\Vhile I have illustrated one form of looking means for the boot, it is stood that this is merely for the purpose of illustration, and my apron could equally well be used with any boot. having other means to retain it in place, either of the type of boot that locks tube, or of the type that is attached to the the apron to the boot by the rality of The pro-.

to be underaround the inner oot.

While I find it more desirable to secure lines of stitching at two edges, as shown, it is also to be understood that it could be otherwise secured without departing from the spirit of my invention, so long as the apron is free from the boot throughout of its area.

Having thus described to secure by Letters Patent is y 1. A blow-out boot having on its outer surface a sheet of rubber, loose therefrom throughout its greater area.

2. A blow-out boot composed of a plulaminations, the outer of said laminations being oi: different material from the other laminations and being detached therefrom throughout its great area, said outer lamination being formed of a material possessing greater flexibility than that of the other laminations. V

3. A blow-out boot composed of a plura'lity of laminations, the outer, of which is.

edges to the outer surface of said body, and loose therefrom throughout its remaining area.

In testimony whereof I atlix my signature.

JOHN A. BARNES.

the greater part my invention. what -I claim as new and desire

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