USRE19252E - Combined tiee gauge and foxing - Google Patents

Description

July 24,- 1934. A. s. MARCHUS .COIBINED TIRE GAUGE .AND FILLI'NG VALVE 2 Sh eets-Sheet 1 INVENTOR.

ATTORNEY Original Filed March 15, 1928 y 1934- I A. s. MARCHUS Re. 19,252

COMBINED TIRE GAUGE AND FILLING VALVE 0riginal Filed March 15, 1928 I 2 Sheets-Sheet 2 Reisaued July 24,1934

UNITED STATES PATENT OFFICE.

c'omnnmn m GAUGE sin mama VALVE AmoaS.Mnrchus,

Original No. 1,115,403, dated June 4,- 10 2s, Serial No. 201,100, ms 15, ms. Application m reissue September a, 1030, 861181 No. team 'lhe present invention relates to improvements in air valves generally. and in particular-to an improved combined inflating valve and gauge adapted for use in garages, service stations and 5 the like for inflating'automobile tires and other inflatable objects. a

The primary object of my invention is the provision of a combined tire gauge and ililing valve which when in use and under pressure mayflrst' l0 beappliedtotheairvalveofatiretoascertain the pressure therein, then by the manipulation of the trigger valve incorporated in my device the said air under pressurewiil be dispensedto the I said tire, and upon the release of said trigger 15 valve the pressure in the tire will automatically be registered in the gauz or my invention, then ii'the desiredpressureinthetirehasnotbgn reachedmyvalveis manipulated again andupon release the new pressure may be read.-

n An important object of my invention is to provide a combined inflating valve and gauge which is compact, durable, comparatively simple in construction, positive in its action and. accurate inrecording andwhichisconstructedinthe form of a pistol to greatly facilitate its handling, operation and reading Another object the invention is a device of this character which is provided with a'handy grip conforming to the butt of a pistol. with its vaive-trippingmechanism so arranged as to be conveniently reached and tripped V, y the "t isser finger" of the operator.

Another object oi the invention is the pro visionoi'adevice of theclassindicatedvwhich B completelyenclcsed in a soft rubber protective covering, which protects the working sible rough usage thereof, and also lends warmth to its handling in coldiweathsr.

4 fltillanotherobiectoftheinvention'istheproevisionofadevicewhichis'providedewithanair valvehavingatriggermeansoperabiefrcmone side of the device whlchggreatly facilitates the- I actuationof thevalve, and additionally aids-in the rapidassemblage Anadditicnalobiectistoprovidesmhadeordisassemblageofthe vicewithanovel gaugemw imlmwhichiseasy tooperatebyreasonof itsbeinginitiallysetto register at a predetermined pressure,'generally twenty pounds. thus considerably travel of the R l -registering barrel.

8tillanotherobiectoftheinventionistheprovision of a rubber-encased device in which the,

slassnuIedialthereofissealed-intherubber againstdisa'rrangementandbreakageduetoposister covering of the apparatus to protect it from breakage and to render the deviceeompletely water, air and rust proof as a whole.

\oi' the objects of my invention may be attained withtheuseoflessthanallits advantageousfeatures, or with modifications within its purview. It is petitioned therefore, that my invention be Referring to the drawingsz" Flame 1 is a side elevation ustrating the exterior contour of the rubber-encased device and showing the airinlet andoutlet lines connected for use and the swivelled chuck mounted in the so endoftheoutletlinen l 'igurezisaplan shgwingthevarious parts shown in Figure -l and further illustrates sl sedialanddislpointerbymeansofwhich tirepressureisindicat ed. I 35 I"igure3tt longitudinalinid-sectionillustratingtheinteriorarrangementotthevariousparts constituting thedevice. the section being indil'igur'e b-is a sectional detail ofthe said valve mechanism and illustrating the-gauge-actuating valve and valve-operating stem, this valve being,

I'lgin'eQisaviewJ'artlyinsectiomof thereg- -barrelwhichcarriesthepressure-reeording l'lgure'lisa'transveraeseetiontakenthrough devlceattheline'i7asindicatedinl'lgureS, ahowsthepositionoithe portleadingfromthevalvetothega ltcbar- I numeral 12 in a general way indicates the combined apparatus as a whole, and which comprises a main inlet valve mechanism, 13, gauge valve -mechanism, 14, gauge mechanism, 15, inlet line,

' 16, outlet line, 17, and swivel chuck, 18.

The main portion of the device consists of a pistol-shaped casting, 19, having an inlet bore,

.20, formed at one end, an angularly disposed valve bore, 21, an interiorly-threaded gauge-bar rel boss, 22, and an outlet nipple, 23) A hose nipple, 24, is tapped into the threaded bore, 20, ofthe device and provides means for the attachment of the pressure line, 16, which in turn com-. municates with any suitable source of fluid pressure, not shown. A filtering screen, 25, is positioned in the bore, 20, and filters the incoming air before it reaches the valve bore, 21; said bores, 20 and 21, being in communication by means of a port, 26, drilled through the casting as shown in Figure 3.

The bore, 21, communicates with an interiorlythreaded bore, 27, of considerably larger diameter, which bore, 2'1, extends downwardly and emerges at. the underside of the casting. The main valve, 13, consists of a plug, 28, Figure 4, having exteriorly arranged threads adapting it to be screw seated into the threaded bore, 27, as shown in Figure 3. This plug, 28, is provided in its upper face with a recess, 29, in which is seated a rubber ring, 30, forming a valve seat upon which the lower bevelled edge, 31, of the valve cap, 32,- is adapted to remain normally seated when my invention is in service.

The plug, 28, is bored centrally as indicated at 33 and a small tube, 34, is secured in this bore and extends upwardly through the ring, 30, and terminates thereabove, the said tube being provided with transverse air inlet openings, 35, positioned just above the upper face of the ring, as clearly shown in Figure 4.

A valve stem, 36, fits loosely in the plug bore and tube, 34, and normally engages in the upper end, 37, of the cap bore by means of spring urge as hereinafter described.

The gauge valve mechanism, 14, Figure 5, comprises an exteriorly-th'readed shell, 38, adapted also to be screw seated into the bore, 27, but below the plug, 28, and has an axially disposed bore, 39, a communicating bore, 40, of smaller diameter, and a communicating stem-bore, 41, of still smaller diameter than either of the above mentioned bores. A plug, 42, is screw seated into the upper end of the bore, 39, and said plug is provided with a neck, 43, and anaxial bore, 44, through which the stem, 36, slidably operates, the lower end of said stem being provided with a head, 45. Y I

'The main valve tripping mechanism consists of a trigger in the form of a rounded head, 46, having an upwardly extending stem, 47, slidably fitting in the bore, 41, and having an annular head, 48, formed at its upper end. A compression spring, '49, surrounds the stem, 47, and rests upon the shoulder, 50, formed in the lower end ,of the bore, 40, of the shell; said spring tending to normally urge the head, 48, upwardly until brought to a stop'by the head, 46, as clearly shown in Figure 4. A leather valve cup, 51, is mounted in the bore, 39, and rests upon the head, 48, and forms a tight fit in said bore when pressure is introduced into the bore, 39, by way of the plug bore, 44.

When the gauge valve mechanism, 14, is positioned in the bore, 27, Figure 3, it will'be noted that a chamber, 52, is formed therein above the plug, 42, and a second chamber, 53, is formed exteriorly of the shell, 38, which is entirely independent of said chamber, 52. The chamber, 53, communicates with the bore, 39, by means of a needle bore, 54, Figure 5, extending through the-wall of the shell and'said chamber, 53, in turn communicates with a port, 55, leading up through the casting and entering the inner end of the gauge barrel, as shown in Figures 3 and 7. 1

The chamber, 52, communicates with the inlet tube, 34, and theoutlet air port, 56, formed in the outlet nipple, 23.

The gauge mechanism of my device comprises a barrel, 57, screw-seated into the interiorlythreaded boss, 22, and having its open inner end partially closed by'a perforated disc, 58, which forms a seat against which the gauge plunger normally abuts; said plunger consisting of a leather cup, 59 and a rubber disc seat, 80, which disc, 60, seals the perforation in the disc, 58, when ing an inwardly extending stem provided with a centrally-disposed bore for the reception of a swivel pin, 69, which pin is provided at its outer end with a screw head and at its inner end with a threaded portion, 70, and an intermediate shoulder, 71, preventing itslongitudinal movement in the bore. A thimble, 72, is mounted upon the stem and the threaded end, 70, of the pin extends through the threaded inner end of said thimble adapting it for. longitudinal adjustvment relative to the plug, 66, said thimble bearing at itsouter end an annular rim, 73, forming a seat for the outer end of the spring, 65, and adapting said spring for adjustment by compressing or expanding the same as desired in the calibration of the gauge of the device.

The cage, 61, is provided between the beads, 62 and 63, thereof with a graduated strip of paper, 11, or other suitable material bearing the pound graduations for pressure ranging from 20 to 90 as shown in Figure 6. These graduations are kept uppermost at'all times by the serrated,

inner end, 74, of the spring, 65, which prevents the cages turning in the barrel, 57. The upper side of the barrel, '57, is provided with a-slight opening, 75, through which the graduations on the cage may be viewed in reading the indicated pressure.

A chamber, 76, is formed in front of the barrel disc, 60, and which communicates with the port,

55, and the interior of the gauge barrel through. the perforation in said disc whereby fluid pressure may be admitted to the gauge plunger for 15) causing its outward movement together with the spring cage against which the plunger abuts, this movement taking place only upon the release of fluid pressure .from the tire into the chamber, 53, as hereinafter described.

The chuck, 18. is swivelly mounted in the end of the outlet line as shown in Figure 8, said outlet line, 17, being not longer than a foot or so for the convenient handling oi the chuck by the free hand of the operator. This chuck comprises a nipple, 77, having a finished portion, 78, provided with an annular groove, 79, and a recessed inner end, 80, communicating with the bore, 81, through said parts. The angle fittin 82, isprovided with a bore, 83, adapted to receive the portion. 78. and to rotate freely thereon and is held in connected relation thereby by means of a screw, 84, which screw has its inner end projecting into the groove, '19. A counter bore, 85, is formed in the angle fitting, 82, and said bore is of the same diameter as the recess in the end portion, 80, both being adapted to receive a short piece of rubber tubing,

' 86, which forms the union at the Joint between the angle fitting, 82, and the nipple, 77. This tube prevents leakage of air at these parts by reason of its cylindrical expansion when fluid pressure is admitted to the swivel, 18, the action being assisted-by means of a small coil spring. 81, which is fitted into the tube and which'also prevents the tube from collapsing.

The valve end oi. the chuck is provided with a bore, 88, positioned at right angles to the bore. 81, and communicates therewith by means of a port, 89. A counterbore, 90, of larger diameter than the bore, 88, provides a seat for a disc, 91, which disc is centrally perforated and provides a guide and scatter a grooved valve member, 92, normally held seated by a spring. 83, mounted above the member, 92, in the bore, 88. This valve, 92', is provided with a downwardly projecting stem, 94, which is adapted to contact and bear against the stem of the tire valve (not shown) of the tire to be inflated to open the said tire valve. and which action simultaneously unseats the valve, 92. and permits the flow of air from the tube, 17, totheinner tube ofthetireas'long'asitisheldin place by the operator with the trigger, 48. functioning. A bushing, 95, secures a rubber gasket ring, 96, in place against the disc, 91, and provides an air tight seat when pressed against the edge ofthetirevalvestem.

The entire device when assembled is provided with a fairly thick covering of soft rubber, 8'1, which is vulcanized or molded thereon in any suitable manner, the barrel end of the covering being I grooved as indicated at 98 toreceive a flat metal ring. 99, which is'fitted in the groove and slap adapted to encompass the tube, 17, which ring is then crimped in place as shown in Figure 11 to tightly bind the tube, 17, and barrel of the device together. The gauge glass, 1 109, and indicator pointer. 101, are set into the rubber-"as shown in Figures 2 and 3. v The operation of my invention is asfollows: Assumingthattheiine,18,isundersayfrom sixty-five to ninety pounds. of air pressure, from any suitable source. air will enter the valve bore region, 21. and hold the can. 82. fl8hfl! seated upon its seat, 30, and force the stem, 38, downwardly and set the trigger or head, 48, in "cocked" positionassbowninl'lgures3and5. when readytodeliver air,the operator grasps-the butt of the deviceashe wouldaptstol withtheforefingerofthehandrestingonthetflgger,48,and withthe'otherhandheholdstheswivelehuckin \that the valve cap, 32, is unseated in the infia- I consider to be the best embodiment thereof, I desire to have it understood thatthe device shown Upon releasing the trigger, 48, the pressure in 35 the bore, 21, automatically seats the valve cap, 32, again and returns the parts to'their initial positions, as shown in Figure 3. At this point of the air filling the pressure in the infiated tire may be ascertained, the tire valve being open, the confined fiuid pressure in the tire backs up through the line 1'1. and into the chamber, 52,v from whence it travels through the bore, 44,. of the plug, 42, and into the bore, 39. This incoming air causes the valve. 51, to be depressed to the position shown in Figure 5, thereby opening the needle port, 54, to the chamber, 53, and thence through the port, 55, to the chamber, 78, and finally to the plunger of the gauge, thereby forcing the graduated spring cage outwardly until equalization is reached. whereby the indicated pressure may be read. I

When the reading has been taken the chuck may be released if the pressure is sufiicient, or if insufllcient the triggeris again tripped to unseat the valve. 32, and allow an additional flow of air to the tire.

The spring, 49, tends to keep the head, 48, of the valve. the cup, 51, and the head of the stem,- 38, in contact at all times, and said spring also assists in a measure in unseating the valve cap.

tion of the tire.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation will be readily understood by those skilled. in the art .to which the invention appertains. and while I have described the principle of operation, together with the device which I now and a resilient covering constantly enclosing said body and gauge mechanism and providing a sight opening for reading the pressure registered by said mechanism.

2. In a device of the character described, a

' body, a gauge mechanism carried by said body, a resilient covering constantly enclosing said body, a gauge mechanism. carried by said body:

.4. In a combined tire gauge and filling valve comprising a comparatively small light metallic being visible.

5. Anapparatus of body constantly inclosing a valve and gauge mechanism, said body being apertured for reading the pressure registered by said mechanism and a comparatively thick resilient protective form encompassing said body, the external dimensions of said form being considerably greater than the dimensions of said body, said aperture the character described ineluding a metallic body constantly inclosing a valve and a sauze mechanism, said body being I spertured !or reading the presure registered by said mechanism and a substantial resilient propressure registered thru the aperture. said aperture being visible;

' AMOS S. MARCHUS.

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