US1430795A - Air tube for pneumatic tires - Google Patents

Description

' vn; 1. CHAPPELL. MR TUBE FOR FNEUMATIC TIRES.

APPLICATION FILED MAYH. 1922.

D. J. CHAPPELL. AQRTUBE FOR PNEUMATIC TIRES. APPLICATION man MAYH.1922.

Patented Oct. 3, 1922.

2 SHEETS-SHEET 2.

25W /f/W @i Patented @et it,

ont) tutti at? ly i :DAVID JOHN CHATPPELL, 03:'l LLANELLY, WALES.

AIR TUBE FOR PNEUMATIC TIRES.

Application filed May 11,

To all wlw/nt 'it may concern.

Be it known that I. Devin loi-ii: Crt/rrrnLL, a subject of the King oi' Great Britain and Ireland, of College Hill, Llanelly, South lllales, Great Britainy have invented new and Improved Air rltube 'for Pneumatic Tires (tor which l have tiled application tor patent in Great Britain llo. i'flt, liled llt-h January 192i), ot 'which the tollowing is a specification.

This iirfention relates to in'iprovements in pneumatic tubes itor automobile tires the object ot' the invention beine' to etlect improvements in the construction ot the tube whereby the same will be prevented from becoming' deflated in the event oli a puncture.

lVith the above and other objedf; in view.r the invention consists in the conr-ltruction7 combination and arrangement ot the devices as hereinafter described and claimed.

In order to enable my present invention to be tully understood reliereiufe will be made to the aceompanying drawings illustratingthe saine.

Figure l is a plan and Figure 2 is a seetion (on line Xm-X) ot a portion oitl the length of one of the strips.

Figure 3 is a plan and Figure et is a section (on line Y-Y) ot a portion of the length of a number of the strips when laid properly in position overlapping one another.

Figure 5 is a perspective view olf a broken piece of air tube, showin; a part of its inside surface covered with the strips properly arranged as in Figure 3.

Figure G is a plan (similar to Figure l) ot a modified form of strip.

Fig. 7 is a sectional perspective view olf the same.

Referring to Figures l to 5, not only is each strip Z) slitted at o1 to produce flaps o2, but in keeping with my present invention. tongues c are provided upon the flaps o2 for covering the slits b1 in the strip which 1922. Serial No. tlll.

is underneath. Fach slit 1 is therefore completely covered by a tongue which is tree at one end, belongingto the next strip o, above, and there is, or there should be prete n.lily, no slit throughout the ivhole protective surface lett uncof'ered by one oit' the tongues e. llV hen therefore a nail (l (Figure happens to puncture the air tube (t at a point opposite one oi? the innumerable slits o1, it will. simply li'it up the tongue c Coveringl that slit without puncturiniI the tongue, and the tongue will seal the puncture when the nail nl is withdrawn.

The tree ends or the tongue c may project beyond the open ends or the slits olif this should be t'ound to be any advantage. Moreover tongues e may be either ot the same length as the slits o1v or shorter or longer, according' to Wish. The slits o1 maybe Atermed of any Width, either as shown in Figure 6, or or any greater Tidth not larger than the `Width or the tongues o which are intended to cover them. i

illy invention is not conlined to rectangular forms such as illustrated7 as the tongues and slits or gaps may be formed in any other suitable shape. ln any particular case where it may be 'found desirable, the strips. that is the tlaps and tongues, may be treated with glycerine or any other serviceable medium to render them taeky, sticky or other- Wise more air proof along the surfaces or edges which are normally` in Contact .vith one another.

claim:

An improved air tube for pneumatic tires of the kind having strips or' thin rubber or equivalent material fastened along one edge to its inner surface such strips overlapping' eaeh other and each strip out into flaps, characterized by the flaps eaeh having a tongue or extension sufficiently long;` and Wide to cover completely the slits or gaps in the next strip below.

DAY/vll) JOHN CHAPPELL.

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