US1166221A - Blow-off valve. - Google Patents

Blow-off valve. Download PDF

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Publication number
US1166221A
US1166221A US1419715A US1419715A US1166221A US 1166221 A US1166221 A US 1166221A US 1419715 A US1419715 A US 1419715A US 1419715 A US1419715 A US 1419715A US 1166221 A US1166221 A US 1166221A
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US
United States
Prior art keywords
valve
pressure
air
shell
nipple
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US1419715A
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English (en)
Inventor
Samuel Kahn
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US1419715A priority Critical patent/US1166221A/en
Application granted granted Critical
Publication of US1166221A publication Critical patent/US1166221A/en
Priority to GB3709/16A priority patent/GB100183A/en
Priority to FR481706A priority patent/FR481706A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0496—Valve stem attachments positioned outside of the tyre chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/3584—Inflatable article [e.g., tire filling chuck and/or stem]
    • Y10T137/36—With pressure-responsive pressure-control means
    • Y10T137/3646—Co-axial inflation and relief valves

Definitions

  • Patented Dee. 28, 1915 discloses Patented Dee. 28, 1915.
  • This invention relates to devices for use in connection with pneumatic tires or other compressed air containers and has particular reference to means for charging such containers with apredetermined amount or pressure of air.
  • valve struc-v ture of a compound nature embodying the characteristics of the now well known check valvevto retain the air within the tube and having also an auxiliary valve mechanism permitting any excess pressure over the predetermined degree to be discharged or dissipated while the first mentioned check valve becomes seated, retaining the precise desired amount of pressure within the tube.
  • Another object of the invention is to provide a peculiar and efficient means for adjusting the auxiliary valve to insure its operation within predetermined maximum and minimum limits.
  • a further object of the invention ' is to utilize the facilities above mentioned in connectionwith means for testing the degree of pressure within the tube.
  • a still further object of the invention is to improve the facilities for detachably connecting the testing device to a fixed spud or nipple.
  • Figure 1 is a vertical sectional view' of one form of my improvement
  • Fig. 2 is a side elevation of the Lipper portion' of the nipple shell looking toward the right in Fig. '1
  • Fig. 3 is a transverse sectional view on the line 3-'3 of Fig. 1
  • Fig. 4 is a similar viewon the line 4 4 but on a scale smaller than Fig. l
  • Fig. 5 is a view similar .to Fig, 1, parts being in elevation, and indicating slight modifications in detail
  • Fig. (i is a view corresponding to Fig.- 2 but taken as looking toward the right in Fig. 5
  • Figi 7 is Specification of Letters Patent.
  • Figs. S and 9 are vertical sectional f details of modified forms of the invention described below.
  • tire as used herein is to be interpreted as typical of any chamber or other container which may be charged with com pressed air or the like; also the terms vertical and horizontal 7 which may be ernployed in the description of the drawings attached hereto are to be interpreted as being relative only and not in a limiting sense in View of the fact that the parts are all operative irrespective of 'the position thereof with respect to the vertical.
  • FIG. 1 I show at 10 a fragment of apneumatic tire to which is secured a shank 11 constituting the fixed portion of the valve nipple.
  • Said shank has a groove 12 into which the tire 10 ex tends between a head 13 on one side and a lock nut 14 on the other side and turned down upon the threadedportion 15 of the shank.
  • a collar 1G is held against the lock nut by means of another nut 17 and bears at its periphery against the rim 18.
  • the rim and felly 19 are bored as usual to accommodate the valve mechanism.
  • the shank 11 is bored at 2O and has secured rigidly to its outer end a tubular shell A21.
  • the enlarged bore of the shell is formed at itslower end with screw threads 22 and above the threadsl it is tapered upwardly, the smooth tapered surface cooperating with the tapered extreme upper end 23 of the main shank. solutely -airtight joint and one which is strong and rigid.
  • the exterior surface of the shell in which the taper is formed is screw threaded, as shown at 24, terminating in a shoulder 25.
  • a lock nut 26 of peculiar construction cooperates with the screw threads 24 to lock the shank and shell as a ⁇ unit to the rim and felly.
  • This lock nut has a cavity 27 having internal cam surfaces 28.
  • lugs 29 interlock with the cam surfaces 28 and beneath the overhanging lips 32 of the lock nut 26.
  • 33 l show a' rubber gasket ooperating with a metal washer 34 between the .dust cap base and the main portion of the lock nut to positively exclude moisture from the valve mechanism.
  • Adjacent the shoulder 25 is a reduced shoulder portion 35 having an external screw closing the sp'aceinto which the ports 47,
  • a cap 36 which will be termed hereinafter air cap 7 to distinguish it from other caps.
  • the air cap at its closedouterend is fitted with a ⁇ gasket 37 held in an undercut socket by means of a stud 38 arranged in the axis Iof the capyand having'a shallow cavity in its upper end.
  • the air cap 36 constitutes'an airtight closure for the valve shank and shell and is removed from the shoulder 35 when the valve is to be inspected or the tire is to be recharged.
  • valve seat 43 tapered to correspond to the aforesaid taper and provided with a plurality of vertical parallel ports 44 shown herein as eight in number. These ports are arranged with their upper ⁇ ends in .a circle and communicating in the same annular space between a pair of -concentric ridges 45'- against which an upwardly movable blowoff valve 46 is normally seated.
  • This valve 46 includes arubber or similar packing 47 adapted t'o bear against the ridges 45 and threaded upon the extreme upper end of the' stem 49 prior to assembling the device.
  • this nut 53 may be noted' that of determining the proper strength of the spring 50 for use in connection with the valve of a predetermined strength or registry;
  • the aforesaid pin 42 is tapped into the head 51 and hence causes the movement of the head downwardly ywith the sleeve 40,
  • the threaded upper end of the stem 49 projects into a recess 54 at the upper end of the nipple 39T and a nut 55 secured thereto forms a seat or cup in which is supported' the lower end of a light spring 56 surrounding the stem 57 of the check valve 58.
  • the upper end of the spring 56 is heldin place .by means of a cap 58 within the nipple.
  • Said cap is provided with a plurality of ports 59 extending upwardly therethrough and diver-ging from points close to the stem 57.
  • Said stem 57 extends freely through a central bore 60 extending through the stem 49 of the blow-olf valve 46.
  • the check valve 58 includes ⁇ a gasket 61 held normallyseated lby virtue of the spring 56 against a nozzle. 62 formed on the lower surface of a plug 63.
  • the plug and nozzle have a central bore 60 corresponding to and alining with the stem bore 60 and leading into a distributer chamber 64 and communicating with the lower ends of all ofthe ports 44.
  • the plug 63 has a tapered periphery and is fitted snugly airtight into the taper of the shell 21 against the valve seat 43.
  • the spring 50 is so designed that when the head 51 is adjusted as shown in Figs. l and 2, the excess air will blow oif when an internal pressure of seventy pounds per square inch is reached, and, when the sleeve 40 is pushed downwardly to lock the pin 42 in the angular portion ⁇ of the slot 4l, .the pressure required to unseat the valve will be increased to eighty pounds. 'Assuming then, that the tire is to be infiated to eighty pounds, the sleeveV 40 will be forced downwardly and locked as 'just stated while the air is being introduced. lVhen the eighty poundspressure is reached in the tire, the excess pressure will be dissipated and the check valve will be closed, retaining within the tire the precise pressure required. In
  • the combined area of the ports -l-l is preferably approximately the same as that of the bore 60, and itthe ports are formed too large, one or more of them may be plugged, i'l desired, to properly proportion the ⁇ relative areas in any particular case.
  • That form of vthe invention shown in Fig. 5 is substantially the same as that already described with respect to the main and blowoii' valves 58 and 46 and the parts which control their operation.
  • This form of the device typifies its use as a detached part or structure capable of l-ieingicarried in ones pocket or tool box as a feature separate from the tire nipple.
  • 4The device of Fig. 5, however,' is adapted to be. applied to any standard nipple or that portion correspond- -ing to the nipple 39 with a resulting operation substantially similar to thatalrcady set forth in detail..
  • the shell 21 may be quickly secured to the nipple 39, with the rim or end ofthe nipple abutted snugly against a washer 67.
  • the saine including a coupling body 68 in which are slidably tted a pair of radially movable blocks 69 having their inner ends threaded at 70 to correspond to the threads onA the.,y
  • the body.68 carries a stud 38 which serves to unseat any checkl valve carried within the nipple to w-hieh the devieemay beapplied as above described, andfafter' the device is attached it may be'used as ablowuff charging device for the tire or as atestlng'device'in @substantially the same ways y :hat lare ⁇ described above in connection with Fig. 1.
  • the pin 42 extends through a slotv 41 formed through the shell and secured in the.
  • the sleeve 40 is connected to ,the shell 25 by means of pins 7 6 projecting .,into'a spiral groove 77 formed in the outeri I, surface of the. shell 25.
  • the effective posi- ⁇ tion of the sleeve members with respect to .40 each other andthe spring is determined by certain 'graduations formed upon the adi jacent ends of the sleeve members and indifcated as including a point 78 carried by one I- member and' coperating with a plurality .4
  • the sleevel members may be graduated according to any desired pressure, the illustration indicating, for example, pressures ranging from is carried downwardly to the suppprt or valve seat 43.
  • a check valve 80 coperates with a valve seat 62 formed in the support 43. When the check valve 80 is seatedas is the condition normally under the pressure of the fluid l approaching the same ,through the nipple, it prevents the loss of through the vent 65.
  • -F ig. 9 is a somewhat diagrammatic view indicating a further modification and showing a check valve 58 seating upwardly .against the ⁇ valve seat 62 and preventing the upward flow of air from the tire when the required degree of pressure is received therein.;l 'The blow-off valve 46 is held normallyseated upon a valve seat 43 under the force of the spring 50, the other end of the spring acting against a head 5l movable through a pin or finger piece 42 to provide the maximum and minimum pressure points as previously explained.
  • the valve steam 48 is connected through a rocking lever 83 to aV valve- 84 'held normally open by the spring 50.
  • the main support 43a is bored at 85A to permit the passage of air downwardly to the tire directly and also in the other direction to unseat the blow-off valve when the required pressure is reached, the
  • valve* 84 closing promptly, however, and stopping the How through the bore or port 85.
  • I provide a safety blow-off valve to indicate that the required degree of pressure is reached in the tire and automatically providing for the dissipation o-r discharge of the excessive pressure, and. that in all forms of the invention I provide a valve seat or supporting structure with which a plurality of'valves cooperate to control the liow of air throughthe vsupport in either or both of two directions.
  • the check valve 58 is locked upon its stem with respect to the gasket by means of a conical nut whose largest diameter is approximately equal to, the diameter of the check valve seat bore. Said nut being conical enters freely within the valve seat, bringing thel gasket. directlyagainst the seat in such a manner that there is no possibility for the internal pressure to cause the clipping of the gasket and hence the check valve readily unseats when pressed downwardly.
  • a valve shell In 'a device of the character set forth, the combination of a valve shell, supporting means therein providing a plurality of valve seats coaxially arranged, a tubular stem extending upwardly from the supportin, 'l means, means 'to introduce an air supply through said stem, a check valve coperating with the lower portion of the supporting means and opened b v said air supply up to a predetern'iined degree of pressure, 'said supporting means having upwardly directed ports in communication with the air supply, a blow-ott valve surrounding said stem and subject to the action of air through said ports, and a spring of predetermined strength surrounding said.
  • a valve casing having a tapered interior, supporting means fitted in said taper and providing upper and lower valve seats ⁇ said supporting means having a chamber formed therein and a plurality ot' ports leading upwardly from said chamber, the upper valve seat constituted by a pair of spaced ridges between which said ports pass, aV blow-off valve seated upon said ridges and preventing the passage of air from said space up to a predetermined degree of pressure,'and means to -control the iiow of air through said supporting means.
  • valve casing having tapered interior
  • valve seat having a similar taper fitted airtight'within the casing, said valve seat having a plurality of longi- -tudinal ports, a plug likewise fitted. in the lltltl casing against one end of the valve seat,
  • said plug having a chamber communicating with said ports anda downwardly projecting tubular lvalve seat, a check valve cooperating with the latter mentioned valve seat, a blow-off valve coperating with the other end of theiirst mentioned valve seat,
  • valve shell having a reinthe reduced extension' of the ,shell,-a ⁇ .spring of predetermined strength acting between t-he head and the valve, a shell having a slot adjacent the head, apin extending' through the slot and fitted in the head, and
  • a valve seat in the shell and having va central opening, an annular groove in one face and ports extending through the same and opening into the groove, a sliding and spring .pressed blow-o valve for engaging Isaid seat, a second valve seat adjacent the first seat and having van 4opening in alinement 'with the central opening of the irst seat and va chamber in one yface and into which open the ports of the first seat, and a check for the second seat and having a stem extending through the said valve seats.
  • a shell a valve seat in the shell and having a central tn bular stem, an annular groove in ⁇ one face and ports extending through the same and opening into the groove, a sliding .and ⁇ spring pressed blow-off valve mounted on the tubular stem, a second 4valve seat adjacent tlie first valve seat and having a central opening and a chamber ⁇ in one face around said opening, and a check valve for the second seat and having a stem extending 1 through the opening of the second seat into the tubular stem of the first seat.
  • a shell having a port in its side, an adjustable headin the shell, a valve seat in the shell and between which and the head the port is lr cated, lsaid seat having a central tubular stem and an annular groove in one face and ports extending through the same and open ing'into the groove, a blow-off valve mount ed to slide on the stem of the said seat, a spring surroundingithesaid tubular stein between the head and valve, a second valve seat engaging the first valvc and seat and having a chamber in its face next to the first seat and provided with a tubular projection on its other face, and a check valve engaging the said tubular projection and having a.l stem extendingthrough the same into the tubular stem of the first valve seat.
  • a shell having a bayonetl slot, a head in the shell, a sleeve slidable on the shell, a pin secured tothe sleeve and head, said pin working in the slot of the shell, a valve seat in the shell and havinga tubular stem extending through the head and having its projecting end threaded, a nut on the said threaded end,-
  • a, blow-off valve mounted to slide on the valveseat, and -a spring surrounding the stem of the valve seat between said Seat and the head.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Check Valves (AREA)
US1419715A 1915-03-13 1915-03-13 Blow-off valve. Expired - Lifetime US1166221A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US1419715A US1166221A (en) 1915-03-13 1915-03-13 Blow-off valve.
GB3709/16A GB100183A (en) 1915-03-13 1916-03-13 Improvements in Blow-off Valves.
FR481706A FR481706A (fr) 1915-03-13 1916-05-09 Perfectionnements dans les soupapes d'échappement pour bandages pneumatiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US100183XA 1915-03-13 1915-03-13
US1419715A US1166221A (en) 1915-03-13 1915-03-13 Blow-off valve.

Publications (1)

Publication Number Publication Date
US1166221A true US1166221A (en) 1915-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US1419715A Expired - Lifetime US1166221A (en) 1915-03-13 1915-03-13 Blow-off valve.

Country Status (3)

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US (1) US1166221A (fr)
FR (1) FR481706A (fr)
GB (1) GB100183A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693841A (en) * 1951-03-07 1954-11-09 Mack Mfg Corp Tire inflation and deflation system
US20080078450A1 (en) * 2006-10-03 2008-04-03 John Kostin Milanovich Inflation stem with blow-off valve to prevent overinflation
US20080115838A1 (en) * 2006-11-22 2008-05-22 Tien-Tsai Huang Inflation valve
US20090095359A1 (en) * 2007-10-15 2009-04-16 Flow-Rite Controls, Ltd. Stem-mounted tire inflation pressure regulator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693841A (en) * 1951-03-07 1954-11-09 Mack Mfg Corp Tire inflation and deflation system
US20080078450A1 (en) * 2006-10-03 2008-04-03 John Kostin Milanovich Inflation stem with blow-off valve to prevent overinflation
US7404412B2 (en) * 2006-10-03 2008-07-29 John Kostin Milanovich Inflation stem with blow-off valve to prevent overinflation
US20080115838A1 (en) * 2006-11-22 2008-05-22 Tien-Tsai Huang Inflation valve
US7624752B2 (en) * 2006-11-22 2009-12-01 Tien-Tsai Huang Inflation valve
US20090095359A1 (en) * 2007-10-15 2009-04-16 Flow-Rite Controls, Ltd. Stem-mounted tire inflation pressure regulator
US8113234B2 (en) * 2007-10-15 2012-02-14 Flow-Rite Controls, Ltd. Stem-mounted tire inflation pressure regulator
US8402988B2 (en) 2007-10-15 2013-03-26 Flow-Rite Controls, Ltd. Stem-mounted tire inflation pressure regulator

Also Published As

Publication number Publication date
GB100183A (en) 1917-01-04
FR481706A (fr) 1917-01-09

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