US1216853A - Tire-valve. - Google Patents

Description

M. C. SCHWEINERT & J. VOLCKHAUSEN.

TIRE VALVE.

APPLICATION FILED SEPLB. 19H.

Patented Feb. 20, 1917.

MAXIMILIAN CHARLES SCHWEINEBT, 013 'WEST HOBOKEN, AND JULIUS VOLGK HAUSEN, F WE EHAi/V KEN, NEW JERSEY.

TIREVALVE.

Specification of Letters Patent.

Application filed September 3, 1911. Serial Not 648,359.

To all whom it may concern Be it known that we, MAXIMILIAN CHARLES SCHWEINERT and Jones VoLoKHAUsEN, both citizens of the United States, residing in West Hoboken, county of Hudson, and

v State of New Jersey, and Weehawken,

therein. 7

county of Hudson, New Jersey, respectively, have invented certain new and useful Improvements in Tire-Valves, of which the following is a specification.

This inventionrelates to tire valves and' pump tube or other inflating tube. Air is forced through the inflating tube into the valve shell, and against the valve, whereby to open it. Such valves have also been provided with an exterior collar engaging the inflating tube and adapted to force the same downwardly to'unseat the valve, and to raise it upwardly .to permit the valve to become seated during the act of inflation and during running of the vehicle. Valves of this type, however, have been found toleak during the inflating operation, the air passing through the end of the inflating tube outwardly between the tube and the shell. It is one of the objects of the present invention to improve this type of valve so as to prevent leakage. The invention also includes certain other features which willbe hereinafter referred to.

In the drawing, which illustrates sever'al embodiments of the invention,

F'g'urel is a. diametrical section, partly in elevation of a valve of the type referred to showing the inflating tube raised.

Fig. 2 is a similar view showing the valve depressed and in its open, position. i

Fig-3 is atop view of the valve.

Fig. 4 is a section taken on the line in Fig. -1.

Fig. 5 is a bottom view of the lower end of the inflating tube.

Figs. 6 and 7 are modified forms i flating tube; v F1gs. 8 and 9 are modified forms of-pack 111g for the inflating tube.

Patented nebleo, 1917.

Figs. 10,11, 12 are modifiediforiiistof valve proper. s Referring first to Figs' 1 to aid ,iildi-i cate a valve shell having an"e n1argedi foot Z) formed with a valve seat- 0. The "valve proper is usually in the form of a disk (1 v having a packing washer 6 designed town-'- tact with the valve seat 0, and which maybe retained in place and be preventedfrom ad' hering to seat 0 by suitable means, as for instance a shoulder formed by an entering recess 0 in disk (Z and a flange c at the outer edge of the disk. The valve proper may be provided with a recess f partly'in closing a coiled spring 9, the lower end of which may be seated upon a circularprojection it carried in a circular casing 71 which is adapted to screw upon the valve foot, as shown. The lower wall of the casing 1s formed with a passage or passages j through which the air escapes into the tire.

Movably'mounted within. the valve casing is an inflating tube is which is" shown as formed in two parts screwed together,ancl the upper 'endof which is shown as formed with a screw thread Z on its exterior. The

upper end of the casing a isalso screwthreaded atm, the threads Z and m beingfof reverse pitch. A screw-threadedcollar n is provided which engages both the threads l and m, so that as the collar is rotated in one; 7 direction the inflating tube a c is ra sed or drawn away from the valve d, while when the collar is rotated in the opposite dire'ction, the inflating tube is moved inwardly to depress the valve and hold. it in its open p0 v sition. To prevent rotation of the tube the latter may befprovided with a groove so into which fitsa projection 0c on a casing.- Duris for the air which escapes outwardly around the valve, thelower end ofthe tube is slotted or provided with passages-o o as shown.

As the tube 70 is drawn outwardly away I from valve d in order to permit the latter'to close during the actof inflatiomit is found that air passing inwardly through the tube '-leaks outwardly between the tube and the quires a heavier pressure to unseat it. Hence as the pressure is increased the leakage around the tube is also increased.

Our invention providesa means for pre-' venting such leakage. It is usual to provide some means for limiting the upward movement of the tubek such as coacting shoulders p 11 formed upon the tube and casing. In adjusting the tube from its. lowermost position to its uppermost position, it may occupy any one of a number of difler nt positions, unless care is taken to move it to its extreme upward limit. Our inv ntion in its preferred form comprises a means for preventing leakage around the tube in any position which it may assume. To this end we provide what is in eflect a piston packing g which may consist of the cupped leather washer shown, or any other suitable device capable of making a tight joint between the parts, and at the same time permitting their relative movement. When the tube is is formed in two parts as shown, the piston packing may be conveniently applied. at the joint between the parts, being held in place by threading the parts together. Preferably a metal washer r is interposed beneath the packing as shown. The washer 9 thus described also (institutes an efficient packing between the s eral parts of the tube, thus preventiiig leakage at this point.

According to our invention it, is not necessary that the inflating tube shall extend entirely through the bore of the valve shell to ,nthe valve proper. In Fig. 6 we have shown one form of the invention in which the valve proper d is provided witha-rod shell.

a fixed to its upper end, which is adapted to be engaged by a short tube 6 mounted at the outer end of the valve shell. The tube 6 is provided with projections 0 0 which work in slots e 6 formed in the valve shell, while movements of the; tube are effected by a coupling sleeve f engaging screw threads upon the tube 7) and the shell. The tube is provided at its lower 'end with a packing g which is designed to forma tight joint with the wall of the bore of the valve shell as shown, so that air cannot leak around between the tube and .the

In Fig. 7 a somewhat similar construction is shown. In this figure a coupling sleeve I1. is swiveled to a flange 2" formed on the inflating tube j, and engages threads formed on the'upper end of the valve shell. The inflating tube carries a packing which in this instanceis shown as seating against a shoulder or seat Z formed on the shell. The-packing is held in place by a washer m.- The washer and packing are preferably inserted through the bottom of the valve. To this end the washer may be provided with projections to engage a tool by which it may be rotated.

In Fig. 8 the construction of Fig. 1 is modified to the extent that a recess 0 is provided in the valve shell, which receives a packing washer p which makes a tight fit with the tube is. Under pressure the packing is crowded not only against the shoulder of the recess 0 but against the wall of the tube. The fit between the parts may be quite tight in this. construction, since the tube is moved by hand and not by air pressure.

In Fig. 9 a somewhat similar construction is adopted, except that the packing washer g is carried upon a reduced portion of the inflating tube 70' and is adapted to make contact with the conical seat 1 when the tube is screwed upwardly. The valve proper is not necessarily limited to the construction illustrated in Fig. 1. It may embody other means for holding. the packing washer in place.

In Fig. 10 another means of accomplishing this result is shown. Here the valve disk which is designated d is threaded at (Z and receives a correspondingly threaded ring at which is screwed down upon the inner edge of washer e and holds the'inner edge thereof. The outer edge is held by a flanged ring (Z which is threaded and sicrewed upon the threaded periphery of the isk.

In Fig. 11 the disk 03 receives a pin J which passes through its upper part and overlies ring (Z which it holds in place upon washer e. The outer edge of the washer is retained by ring d the lower edge of which is flanged over the-disk and the upper edge over the washer.

In Figs. 6, 8, 9 and 12 the footing b is illustrated as 'formed integral with the valve shell a instead of being formed. sep arately as in Fig. 1. A modified arrangement of valve is also illustrated in Fig. 12 whereby the washer e is seated in an annular recess 0* on the bottom of footing 6 and against which the upturned end d ofthe disk d is seated. The washer 6 may be retained in'place if desired by flange an on the bottom of shell a.

While we have described in detail certain forms of the invention, it is understood that we do not wish to be limited 'to the form shown, since various changes can be made therein without departing from the invention. I

We claim as 'our invention In a tire valveor the like, the combination-of a valve shell, avalve proper carried from said valve proper andmovable in said signed our names in the presence of two shell, and'a packlng fer making a tight subscribing wltnesses' joint between said inflating tube and said MAXIMILIAN CHARLES SOHWEINERT. shell, said tube being made in two parts JULIUS VOLCKHAUSEN.

5 and adapted to clamp said packing between Witnesses:

said parts. HENRY M. TURK,

In Witness whereof, We have hereunto THOMAS F. WALLACE.

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