US1200418A - Self-filling tire. - Google Patents

Description

HERNANDEZ;

SELF FILLING TIRE.

APPLICATION FILED APR. 20, I9I5.

1 ,200,418. Patented om.. 3,1916.

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@u MH/1Mb @Romana JOSE FERNANDEZ, 0F BROWNSVILLE, TEXAS.

` SELF-FILLING- TIRE.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application led April 20, 1915. Serial No. 22,655'.

vTo all whom z't may concern Be it known that I, JosE FERNANDEZ, a citizen of the United States, residing at Brownsville, in the county of Cameron and State of Texas, have invented new and useful Improvements in Self-Filling Tires, of which the :following is a specification.

This invention relates to tire inating mechanism and the principal object of the invention is toprovide simple and eilicient means forautomatically iniating the tire by the action of the weight of the vehicle as the same rogresses over the road.

Another o ject of the invention is to provide a device of this character employing a pump having a piston actuated by the weight of the vehicle and which is so con.

nected that without springs or other intermediarymechanism it will be returned to normal position after'every stroke.

Further objects of the invention will appear as the following description is read in connection with the accompanying drawing, which forms a partof this application, and in which Figure 1 is a detail side elevation of the wheel showing the apparatus applied thereto. Fig. 2 is a' sectional view taken on the line 2 2 ofv Fig. 1. Fi 3 is a horizontal sectional view taken on t e line 3-3 of Fig. 1 and-looking in the direction of the arrow.

' Referring more particularly to the drawing, 1 represents an ordinary wheel felly having secured thereto the tire receiving rim 2 in which the ordinary clencher shoe or casing 3 is secured. This casing contains the usual inner tube 4 which in this'instance has connected thereto and passing through the felly and rim in place of the valve an elongated nipple 5 to the outer end of which is secured the thickened bottom 6 of a pump cylinder 7. The bottom 6 is provided with -a gland collar 8 externally threaded to receive the packing washer 9 which bears directly against the outer face of the felly, as

shown, and holdsall parts in operative position. The outer end of the cylinder 7 is closedfby a cap 10 having a thickened central portion 11 in which the valve seat 12 is formed. This valve seat communicates with an inlet port 13 which is closed bythe valve 14 and normally held in such position by the spiral spring 15 surrounding its stem. Covering the enlarged portion or boss 11.is a foraininous cap 16 which contains a quantity of. wire gauze or any other suitable dust collecting material 17.

Slidably mounted within the cylinder 7 is a piston head generally indicated at 18 and consisting of a central plate 19 centrally apertured and formed with 4the valve seatY to receive the valve 20. 'On opposite sides of the central plate'are arranged packing disks 21 held place by the plates 22 `and the screws 23 which also connect the piston head with a cross plate 24 of slightly less wider diameter than the diameter of the opening 25 immediately above the valve 20; The cross plate 24 has connected directly thereto a plunger or piston rod 26 which passes through the nipple 5 and has formed on its outer end a ball 27 fitted for universalv movement in the socket member 28 which 1s connected to the outer or peripheral portion ofv the inner tube 4 by means of a clamping plate 29 and screw 30.

It will be seen from the foregoing that at each revolution of the wheel the piston will move the piston head inwardly toward the valve 14. The air in the cylinder between the piston head and the valve 14 will be compressedand will pass through the valve 20 and through the nipple 5, which the piston 26 loosely fits, into the inner tube. Immediately thatv the weight is removed .from thepiston 26 it will be restored to normal position by the inner tube which will expand the casing to its normal position until again compressed by the weightof the vehicle.

It is of course understood that a device of this character is ineiective to start the insulation 0f a completely deflated tire and for this reason the valve 31 is threaded into the bore 32 formed in the thickened end 6 of the cylinder 7. This valve is of the ordinary air pump type valve commonly employed in pneumatic tires and has its oute end closed by the usual dust cap.

What is claimed is In a device of the class described in-combination a felly, a tire, a rim secured to the felly and receiving the tire, said felly and rim being formed with an opening, an elongated' nipple, a piston rod projecting through said opening and universally cnnnected in the tire, a clamping member engaging said threaded nipple at one end for jamming the -base of said tire against said rim, a packing nut of a greater diameter thansaid nipple surrounding the same and engaging said felly, said nipple projecting through said felly and rim in spaced relation thereto and having a bore of greater diameter than said rod, said rod projecting through said nipple, a piston secured to said rod, a pump cylinder having a projecting gland collar with an opening communicating with the opening in the gland collar, said packing washer Abeing formed with a circular depression in which said collar is received, said nipple being threaded into said collar and the opening of saidv pump cylinder whereby to jam said collar against said washer, whereby the opening of the nut provides clearance between the Washer 15 and nipple.

In testimony whereof I affix my signature in presence of two witnesses.

JOSE FERNANDEZ. Witnesses:

J. G'. FERNANDEZ, E. J. TUCKER.

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