US1377590A - Valve - Google Patents

Description

L M. C, SCHWEWEHT,

mvf.

milf m5. 17.1909.

Patented Ma H. P. KRAFT AN APPUCA'HQN INVE NT@ M HGF-E l. il

i fr

VALVE,

Specification oiLietters latent.

Patented they Tita Applemanl mei' February i7, iena. serial ire. erases.,

To `all whom t may concern-v:

nBe it known that We, HENRY KRAFT?,

residing in the borough of Bi'ooklyn,xcounty oflings, city and State oi New York, and

Mairisiiiiniiv CHARLES Slcriwitiiviiiir, residing in lNest Hoboken, inthe county oli Hudson' and State oi'Nevv Jersey, both'citizens ot' the United States, have jointly invented certain new 4and useful l Improvements in Valves, of which the 4followingfis a specification.

y This invention aiins to'r provide certain" improvements especially applicable to pressuite indicating valvesl for pneumatic tires,

the invention and applicable4 also in Whole or in 'part to valves'for various other purposes. y

The accompanying drawings illustrate an embodiment of the invention:

liigures '1; 2, 3 and 'd are dianietial sec! tions vot diicerentftypes at valve embodying llig. 5. is a cross-section on the line i-Afof l. Except as indicatedi'n Fig. 55th@ parts are generally of circular cross-sectionu Referring to the einbodinients ofthe inveiition illustrated, the valve shell A. carries l the usual parts of an ordinary or suitable l to. indicate `the pressure within the tire;k

tire valve such as the valve proper, seat, spring, Steins, 6to., of the comiiion Schrader valve illustrated in Fig. 1, which are sur-V rounded by an outer tube B which is threaded on theoutside to receive a dustcap coverthe entire valve shell, and which is provided with iiat outer faces ,to prevent its turning in the rim oit the Wheehthese `tealtures being; common. ,y

tube directly surrounds the The outer n upper part oit theA valve shell A Witha good slidingvit, so that the latter may slide out oit the end oit the outer tubeB -su'fliciently the valve Shel A being yieldingly held down in the outer tube by ineans of one or niore helicoidal springs and l), and by ineens oi an elastic tubel through which an air-` tight e'oriiinunicating,1 passage is provided f .4. 1.. i rioni the valve shell to the inteiiot of the The arrangement Gr and the part the 'details of these v. i yielding connections are irnportantin the" to the construction voit Fig.

l, the valve shell A is'provided With' a nipple F of reduced cross-section permitting the 55 use oi" a straight outer tube B, and yet leaving a sucieiit annular space for the attach# ing devices hereinafter referred' to.- .The outer end 'of vthe elastic. tube l is, fastened on the 'nipple l?, preferably by corrugating 60 the, latter and stretching the v`tube' over the saine (and Wrapping the tube if necessary). The springs G and 'D are attached to the valve shell by means `ii'idepeiident of the 4connection between the shell and the elastic 65 tube, as for ex'ainjle by the screv'vl threads of Figs; 2- andh o i' by an attaching ring G ig. l.) which is screwed its upper end to a portion H ol: the valve shell which is of intermediate cioss-sectioiilietween that 70 'of the nipple F and the upper" part of the shell.' lhespriiig- C is attached to the attaching ring G by screwingn the spring on the' outside thereof9 vthe reduction ota crossi, section from the portion H ot the valve shell -75 to the nipple F permitting a correspondingI '1 'reduction ofthe lower part of the attaching, 'ring Cv.) so as to maire rooni vlor the spring' C betweenthe attaching' ringand the outer tube B. rlChus the connection'iioin the outer S0 springto the shell through the rin-g Gr extends above the connection of the elastic `tube.- The. inner spring D has its convolution's arranged closeftogether so as to prel 'vent or'inaterially limit diametral epan-a `Within 'the lower Yend ofthe attaching ring, i

where the' attaching 'ring` entends belovv the valve shella so vthat thereis plenty o rooin. 'lhe attaching ineinber G is suitably grooved orythreaded to perinit the screwingI oit the springs thereon. The attaching ring Gr is shouldered `on the inside to correspond 4with thev reductionin cross-section between the 95 parts l-l and llf of thevalve -hell7 and the elastic tube E, preferably ends upward l suiciently tohave its ends pinched oici 'flat between the shoulders of the attaching ring 1 Y Y Q10@ The construction may be sonievvhatsiinpliiried by oniitting1 the spring and using*4 a single spring Cas in Figs. 2 -and 3,v 'andin this'case the spring may be attached to the intermediateportion H et the valve shell 3.05 directly by screwing1 it upon suitable threads thereon. The nipple F is attached to the end of the elastic tube Eby merely extending the tube overth'e corrugatedouter surface ofthe nipple and vwrapping it'thereonz withA wire ythread or the like. y

ends .of the elastic tube and the springs, is

important in vorder tojobtainnsimplicity and cheapness, and the sameftime preserve an air-tight connection; llor'th'is .purposepretl erably the constructions in' lligs." 1,2 andVv 3 are employed, 'in whichthe inner fendot the tube isi-provided withjanoutward flange `which is clampedbetween` "two suitable.

membersf i In the cons tructivon shown "in Fig'. ,il .springs C and@ have their innerend's astened tofthimbles il and l respect1vely by` means of screwthreadspa's the upper ends,

y L and M, which` take under' a"shoi1lder upon a Alined membersuch as the head N on the.'

and these thimblesareprovided `with flanges inner endof thtvv outer tube i3.' `Thel vflange O atthe inner 'end ot the "elastic tube E is' clamped between said lined member together with the flangesla and 'lli/i by means ofia* Y nut l screwing into athreaded' socket ,in

the member Nr f 'In the construction oil-Fig. 2, the ,shoulder Q- which supports the thimble 'llcarrfing the spring, is provided in ,the.portion otthe Vouter tube B beyond the head ll, y'the flange O of the elastic tube alone is' clamped j between said member N andth'enut P;

In the construction of 3 the shoul der Q and thimble ql. arethesame 'as in Fig. 2. .The flange U whfichjsjprovided is a metallic llange onl a thinible llt having' upper end. llVith this construction, in order for the lower end with the elastic tube E,

a corrugated exterior upon which tlietube 1s forced and wrapped the same as at-its to insure an airtight joint, it is advisable to introducen packing ring S of rubber,

leather, or other packing material between the flange4 O and the nut P.

Any one of the connections illustrated for the upper ends olf the elastic tube and vsprings maybe used, either with or with-,

out the particular style of connections previously described for the inner ends. example instead'lof providing a iiange 'at the inner end of the elastic tube which is clamped in place to'hold it tast, the con was ' The manner Lci attachment ot thelowerl Fory upon the outer tube ld and pressing 'down vupon the Ytop of 'the valve cap U. (Fig. l} to prevent yielding or" the springs and stretching of the vinner tube except when the tire is lirst pumped up, so as to save strain en said v spriiflgs Zandy tube. .it is nadvisable however 1, to press as hard upon the top of the cap as .would sometimes be the, case with this arrangement, and wepropose to use a restrain- 'ving devic'ewh-ich 'shall avoid'any strain on the-cap byacting upon the valve shell A.. ilor'this purpose a ring Vis' provided hav- 'fing-'al thread which it vmay, be introduced-over the end ot' the valve' shell, vand seating/upenn shoulder TW on 'saidshelh its 'lower endl being threaded to` enter a threaded 'socket'in tlie'ftire of the outer tube B. simply unscrewing the restraining ring LV, the apparatus isjlree to yield to'indicate the internalpressure,or by pressing down and screwinglin' the ring -V theparts arev held in 4their nordnal unstrained position.

ln order to' 1 prevent the lvalve shell A from rotatingin `the outer tube'hB, a ,slight 'projection Y (Figi-i5) is preferably formed 4in theouter tube? entering a longitudinal groove `Z in the yvalveshell. 1What wev claim is'z.- l l." llaa pressure indicating tire valve, the

"combination of a tube, a valve shell' adapted f to have movement longitudinally ihn 'said ."tubve, having an extension at its lower end of two reduced diameters, the lower portion ot the extension being of less diameter than the portion above it,^an elastic tube connected toonereduced'portion of said shell andtozsaid tube vand a. coiled spring connection between the other reduced portion of said shell and said tube, whereby said elastic ...tube may be connected to said shellinde'pendently of said coiled spring connection.

2. ln a pressureindicating tire valve, the

'ill

combination of a tube, a valve shell adapted `to have'v movement longitudinally in said tube, having an `extension at its lower end of two reduceddiameters, the lower portion of theextension being of less diameter than the portionabove. it, an elastic tube connected to the more reduced portion of said shellY andto said tube, and a coiled spring connection between the lessl reduced portion of said shell and said tube, surrounding said elastic tube, whereby said 'elastic tube. may

be connected to said shell independently of said coiled spring connection.

3. ln a pressure indicating tire valve, the combination of a tube, a valve shell adapted to move longitudinally in said tube having a body portion'of substantially the saine external diameter as the internal diameter of said tube, and an extension of less diameter 'than body portion upon its lower end constituting a nipple, and an elastic tube and a coiled spring connection between said..

tube and the nipple of said shell.

shoulder at its lower end, a valve shell.

4. In a pressure indicating tire valve, the -combination of a tube, a valve shell adapted to have movement longitudinally in said tube having an extension at its lower end of two reduced diameters, the lower portion of the extension'being of less diameter than the portion above it, an elastic tube connected to the more reduced portion of said shell and to said tube, a sleeve connected to the less reduced portion of said shell, and a plurality of coiled springs connected to said sleeve and said tube, whereby said elastic tube and springs are connected to said shell independently of one another.

5. In a pressure indicating tire valve, the combination' of a tube having an internal adapted to have movement longitudinally Ain said tube, an elastic tube connected to said valve shell and tube, and a nut on the interior of said tube clamping said tube between it and said shoulder in saidtube.

6. In a pressure indicating tire valve, the combination of a tube having an internal shoulder at its lower end, a valve shell adapted to have movement longitudinally in said tube, an elastic tube provided with an outward flange at its lower end connected to said valve shell and tube, and a nut on the interior of said tube clamping the flange V(tube for retaining said shell against movement.

8. In combination, a valve shell having 'at its inner end a nipple of reduced crosssection and anelastic tube fastened at one end on said nipple and adaptedV to maintain communication between said shell and a pneumatic tire, and an outer tube surrounding the larger portion otsaid shell and adapted forA connection to said tire, the attaching means comprising a ring connected to the shell above the end of the elastic tube and to the spring.

lIn witness whereof we have hereunto signed our names in the presence oftwo subscribing witnesses.

HENRY Pn KRAFT. MAXIMILIAN CHARLES SCHWEINERT.

Witnesses:

EUGENE V. MYERS, THEoDoRE T. SNELL.

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