US535978A

US535978A - Granyille it

Info

Publication number: US535978A
Authority: US
Publication date: 1895-03-19
Anticipated expiration: 1912-03-19

Description

(No Model.) 2 Sheets-Sheet 1.

G. H-QE. 000KB.

PNEUMATIC TIRE.

No. 535,978. Patented Mar. 19, 1895.

//v vavro'n.

wlrA/a ssss.

(No. Model.)

2 Lb e h S w e e h S 2 mm H I M B U HE m G THE Nhkms vrrzns 00.. waruLn-na. wlsumm'ov, u. c.

V UNITED STATES PATE T OF ICE.

GRANVILLE H. E. OOOKE, OF LONDON, ENGLAND.

PNEUMATIC TIRE.

SPECIFICATION forming part of Letters Patent No. 535,978, dated March 19, 1 895.

Application filed December 11, 1894. Serial No. 5 31,537. (No model.)

To aZZ whom it mag concern.- v

Be it known that I, GRANVILLE HAWLEY EGERTON COOKE, a subject of the Queen of Great Britain and Ireland, and aresident of' Brunswick Square, in the city of London, England, have .inyented certain new and useful Improvements in PneumaticTires; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention for improvements in pneumatic tires relates to tires having an outer removable cover and an inner inflatable air tube, and has for its object to render it impossible for the inflatable air tube to get or become gripped or pinched between the sides of the rim and the edges of the outer cover when placing the outer cover in position and to get out of position when the outer cover is being removed; and consists essentially in constructing the air tube so that normally it is held out from the bed of the rim or within the arch of the outer cover to which it is applied.

In carrying this invention into practical effect the air tube is held out or expanded by an elastic ring or circular body of larger diameter than the normal mean diameter of the air tube, and placed within or secured to the tube so that normally, the tube assumes more or less the shape of a flat ring. The ring or body may be of metal, cane or other suitable rigid material or a small inflatable tube and may be a complete endless ring or an incomplete ring or a plain adjustablering or the whole or a portion of the ring when made of wire may be in the form of a helix or corrugated so that the diameter readily adjusts itsimilar views to Figs. 2 and 3 showing a Cooke tire fitted with the air tube, and Figs. 6 and 7 are similar views to Figs. 2 and 3 showing the Clincher tire fitted with the air tube.

The air tube a is fitted internally with an endless ring I) which holds out or expands the tube a so that it assumes more or less the shape of a flat ring as shown in Figs. 3, 5, and 7. The air tube can be fitted by passing the wire through an open ended air tube then securing the ends of the wire by brazing, soldering, bending together or by a right and left screwed nipple and. finally the tube is stretched so that the ends of the tube overlap and the overlapping ends are cemented together. Preferably the diameter of the ring b when joined up is equal to the internal diameter of the crown of the arch of the outer cover, that is the diameter at 0, so that it cannot move about in the tube even when the 'tire is inflated. It is not necesary that the ends of the wire b be firmly fixed together but the ends must be protected so as not to inj ure the air tube and one end may slide in or on the other.

The tube a need not be stretched on the ring I) but be simply held out in a flabby condition by it. The object of the ring 1) is to insure that the air tube instead of lying in the bottom of the rim when deflated is suspended more or less in the arch of the outer cover. The wire need not be an exact circle but can be corrugated or otherwise bent so as to render it more or less flexible in the direction of its'length.

When there is any danger of the wire I) rubbing against or damaging the inflatable tube means must be taken to provide against this as for example by passing it through loops or tabs cemented on the inside of the tube so that it is suspended inside the tube,

when the tire is fully inflated.

This invention may be applied to tubes after they have been made up either by passing the wire E) into the inside of the tube, or if preferred by attaching it to the outside in any convenient manner.

What I claim, and desire to secure by Letters Patent, is-

1. The combination with the air tube of a pneumatic tire of a ring adapted tosupport ICO the air tube within the arch of the outer cover substantially as described.

2. In a pneumatic tire the combination with In testimony whereof I have afiixed my Sig-- nature in presence of two witnesses.

an air tube and an outer cover of a ring GRANVILLE COOIXE' 5 adapted to support the air tube within the \Vitnesses:

arch of the outer cover substantially as de- J. W. MACKENZIE,

scribed.-

ALBERT JONES.