US2752948A - Manual throwover assembly - Google Patents

Manual throwover assembly Download PDF

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US2752948A
US2752948A US350721A US35072153A US2752948A US 2752948 A US2752948 A US 2752948A US 350721 A US350721 A US 350721A US 35072153 A US35072153 A US 35072153A US 2752948 A US2752948 A US 2752948A
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Prior art keywords
bore
disc
ball
inlet
end wall
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Expired - Lifetime
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US350721A
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Clair Theodore A St
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Weatherhead Co
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Weatherhead Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86815—Multiple inlet with single outlet

Definitions

  • Fig. l is a side view partially in section showing a manual throw-over valve embodying a preferred structure according to this inventionp it
  • Fig. 2 is a cross sectional Fig. 1;
  • Fig. 3 is a cross sectional Fig.2. 1 r i
  • the throwover valve is provided withfa body formed with a central bore terminating in anendwall.
  • A,plurality of in-. lets are formed in the body having inlet passages opening into said end wall providing a plurality:.of inlets into the central bore.
  • An outlet is also formed: in the body opening into the central bore.
  • a resilient disc is positioned against the end wall overlapping the inlet passages.
  • a rigid ball is positioned within the central bore and adapted to engage theresilient disc and urge that porview taken along 2-2 of view taken along 3-3 of tion of the disc engaged by the ball toward the end walh nited States Patent Patented July 3,
  • Drive means are provided to move the ball from a position adjacent to one of the inlet passages to a position adjacent to the other inlet passage and to urge the ball into engagement with the resilient disc thereby causing the disc to seal at least one of the inlet passages and isolate itfrom the central bore.
  • the body 10 is formed with a bore 11 terminating in a substantially radial end wall 12 at the inner end thereof.
  • the body 10 is also provided with inlets 13 and 14 which are preferably threaded so they may be attached to sources of fluid under pressure by any normal coupling means.
  • the inlets 13 and 14 are coaxial.
  • Smaller bores 16 and 17 coaxial with the inlets 13 and 14 project beyond the bottom of the inlets 13 and 14 and are terminated at a point spaced from each other by the wall 18.
  • Inlet passages 19 and 21 extend be tween the end wall 12 and thebores 16 and 17 respectively providing fluid communication between the inlets 13 and 14 and the bore 11 through the bores 16 and 17.
  • the inlet passages 19 and 21 are formed with axes parallel to andequally spaced from the. axis of the bore 11.
  • An outlet 22 is provided in the body 10 which is in fluid communication with the bore 11 through the outlet passages 23 and 24 at a point spaced from the end wall 12.
  • the outlet 22 is also formed with threads tofacilitate the coupling with the system to be supplied with the fluid under pressure.
  • the bore 11 is formed with the threads .26 at its outer end into which the bonnet 27 may be threaded.
  • the bonnet 27 is formed with a central bore 28 therethrough adapted to guide the cam assembly 29.
  • the cam assembly 29 embodies a cam member 31, a cap or handle 32, a spherical sealing ball 33 and a resilient spring 34.
  • the cam member 31 is formed with a shaftsection 36 adapted to extend through the bore 28 in the bonnet 27 thereby providing a guide for the cam assembly 29.
  • a resilient disc 37 which is preferably formed of syntheticrubber is positioned against the end wall 12 of the bore 11 and is adapted to overlap the inlet passages 19 and 21. ameter substantially larger than the diameter of the inlets 19 and 21 engages the other side of the disc 37 and urges the disc into engagement with the portion of the end Wall 12 adjacent to the ball 33 under the force of the spring 34.
  • the cam 31 is provided with an olfset bore 38 having a diameter larger than the diameter of the sealing ball 33 in which the sealing ball 33 is positioned.
  • the spring 34 extends between the bottom 39 of the offset bore 38 and the sealing ball 33 thereby urging the sealing ball into tight engagement with the disc 37.
  • the axis of the ofiset bore 38 is preferably parallel.
  • the spherical sealing ball 33 which has a di-
  • the cam 31 is formed with a shoulder 41 adjacent to the end of the shaft section 36 which provides a surface against which the thrust bearing 42 is urged.
  • the thrust bearing is formedof nylon or similar material which has desirable wearing characteristics.
  • a shaft seal 44 Positioned between the thrust bearing 42 and the end face 43 of the bonnet 27 is a shaft seal 44 of the O-ring variety which; is adapted to engage the shaft section 36 and the end face 43,0f the bonnet 27' thereby providing a" fluid. seal therebet'ween.
  • the outer end of the s'haft'section 36 is formed with a flat 46 which is adapted'to engage; a simi lar flat in the recess 47 formed in the handle 32 thereby preventing a relative rotational movementbetween the cam 31 and the handle'32.
  • a screw 48 is provided to securely fasten the handle 32 to the cam member 31.
  • the cam member 31 is formed with a stop surface 49 adapted to engage the stopmember 51 which is secured in the bore 52 in the body 10.
  • the stp 51 is adapted to engage and limit the rotation of th e cam member 31 when the sealing ball 33 is positioned adjacent to one or the other of the inlet pasn sages 19 or 21.
  • An'adde'd safety factor is provided since the disc 37 is adapted to'normally engage the end wall 12 so if the pres-v sure within the pressure source is reduced below the pres-; sure within the system the disc 37 acts as a check valve to preventany flow of air into the bore 11 and on into the system thereby preventing any possibility of a combustible mixture being present within the system which could cause explosions and fire hazards.
  • a throw-over valve comprising a body formed with a main chamber terminating in an end wall, a plurality of inlet passages said body opening into said chamber through; said end wall, an outlet formed in said body in fluid communicationwithsaid chamber in an area spaced Base and certainty of operation from said end wall, a flexible disc positioned against said end wall covering all 'o'f'saidinlet 'passages, a ball in said chamber adapted to engage and urge said disc into sealing engagement with at least one of said inlet passages, means for rolling said ball on the side of the disc away from said inlet passages in a path intersecting the center line of said inlet passages and urging said ball against said disc adjacent to at least one of said inlets, said disc being free to be deflected away from the other of said inlet passages by fluid flow through said passages into said chamber.
  • a throw-over valve comprising a body formed with a main chamber terminating in an end wall, a plurality of inlet passages in said body opening into said chamber through said end wall, an outlet formed in said body in fluid communication with said chamber, a resilient disc positioned against said end wall covering all of said inlet passages, a ball in said chamber adapted toengage and urge said disc into sealing engagement with at least one of said inlet passages, drive means for rolling said ball on the side of the disc away from said inlet passages in a path intersecting the center line of said inlet passages to positions adjacent to each of said inlets, and spring means to urge said ball against said disc, said disc remaining substantially non-rotative relative to the wall during the moving of said ball between positions adjacent to each inlet.
  • a throw-over valve comprising a body formed with; i a main bore terminating in a substantially fiat end wall,
  • a throw-over valve comprising a body formed with a main bore terminating in a substantially flat end wall
  • a plurality of inlet passages with their axes parallel to and equally spaced from the axis of said main bore in said body opening into said chamber through said end wall, an outlet formed in said body in fluid communica-' tion with said main bore spaced from said end wall, a resilient disc positioned against said end wall covering all of said inlet passages, a cam mounted in said body for rotation about an axis coaxial with said main bore formed with an otfset bore parallel to and spaced from the axis of said main bore a distance substantially equal to the spacing of the axes of said inlet passages from the axis of said main bore, a ball in said offset bore adapted to engage and urge said disc into sealing engagement with at least one of said inlet passages, and spring means to urge saidball against said disc, the diameter of said ball being substantially larger than the diameter of said inlet passages and the diameter of said offset bore being substantially larger than the diameter of said ball, rotation of said camrolling said ball on the side of the disc away from said inlet passages in

Description

y 3, 56 T. A. ST. CLAIR 2,752,948
MANUAL THROWOVER ASSEMBLY Filed April 25, 1953 INVENTOR. 49 I 77/500025 A. .sz CLAIR BY J RICHE); WATTS, oaznwusn9vs/m I A TTOR/VEHS 2,7s2,94s e MANUAL THRowovER ASSEMBLY Theodore A. St. Clair, South Euclid, Ohio, assignor to The Weatherhead Company, Cleveland, Ohio, at corporation of Ohio Application April 23, 1953,S erial No. 350,721
4 Claims. cum-625.4
below the pressure necessary forthe system, a valve must be operated which changes the source of supply to the reserve cylinder. Since the consumer in such installations is normally inexperienced it is necessarythat the operation of changing from the supply cylinder to the reserve cylinder be simplified asmuch as possibleMAlsO, since the fluid being controlled in such a system isinflammable, it is essential that the throw-over valve be essentially foolproof so as to prevent any possibility of explosion or fire.
It is an important object of this invention to provide a throw-over valve for switching from one source of fluid under pressure to another source of fluid under pressure which is easy to operate and relativelyfoolproof.
It is another object of this invention toprovidel athrowover valve for use in liquefied petroleum gas installations which virtually eliminates possibility of leakage or contamination of the gas within the system "whichgmight cause fire hazards.
It is still another object of this "invention to, provide a throw-over valve wherein the tolerences of manufacture are relatively large so that thefabrication cost is reduced to a minimum. 1 r
The foregoing and other objects and advantageswill become apparent in view of the following description taken in conjunction with the drawings, wherein:
Fig. l is a side view partially in section showing a manual throw-over valve embodying a preferred structure according to this inventionp it Fig. 2 is a cross sectional Fig. 1; and,
Fig. 3 is a cross sectional Fig.2. 1 r i In a preferred embodimentof thisinventionthe throwover valve is provided withfa body formed with a central bore terminating in anendwall. A,plurality of in-. lets are formed in the body having inlet passages opening into said end wall providinga plurality:.of inlets into the central bore. An outlet is also formed: in the body opening into the central bore. A resilient disc is positioned against the end wall overlapping the inlet passages. A rigid ball is positioned within the central bore and adapted to engage theresilient disc and urge that porview taken along 2-2 of view taken along 3-3 of tion of the disc engaged by the ball toward the end walh nited States Patent Patented July 3,
of the central bore. Drive means are provided to move the ball from a position adjacent to one of the inlet passages to a position adjacent to the other inlet passage and to urge the ball into engagement with the resilient disc thereby causing the disc to seal at least one of the inlet passages and isolate itfrom the central bore.
Referring to the drawings, the body 10 is formed with a bore 11 terminating ina substantially radial end wall 12 at the inner end thereof. The body 10 is also provided with inlets 13 and 14 which are preferably threaded so they may be attached to sources of fluid under pressure by any normal coupling means. In the preferred embodiment of this invention the inlets 13 and 14 are coaxial.
Smaller bores 16 and 17 coaxial with the inlets 13 and 14 project beyond the bottom of the inlets 13 and 14 and are terminated at a point spaced from each other by the wall 18. Inlet passages 19 and 21 extend be tween the end wall 12 and thebores 16 and 17 respectively providing fluid communication between the inlets 13 and 14 and the bore 11 through the bores 16 and 17.
in the preferred embodiment of this invention the inlet passages 19 and 21 are formed with axes parallel to andequally spaced from the. axis of the bore 11. An outlet 22 is provided in the body 10 which is in fluid communication with the bore 11 through the outlet passages 23 and 24 at a point spaced from the end wall 12. The outlet 22 is also formed with threads tofacilitate the coupling with the system to be supplied with the fluid under pressure. p
The bore 11 is formed with the threads .26 at its outer end into which the bonnet 27 may be threaded. The bonnet 27 is formed with a central bore 28 therethrough adapted to guide the cam assembly 29.
The cam assembly 29 embodies a cam member 31, a cap or handle 32, a spherical sealing ball 33 and a resilient spring 34. The cam member 31 is formed with a shaftsection 36 adapted to extend through the bore 28 in the bonnet 27 thereby providing a guide for the cam assembly 29.
A resilient disc 37 which is preferably formed of syntheticrubber is positioned against the end wall 12 of the bore 11 and is adapted to overlap the inlet passages 19 and 21. ameter substantially larger than the diameter of the inlets 19 and 21 engages the other side of the disc 37 and urges the disc into engagement with the portion of the end Wall 12 adjacent to the ball 33 under the force of the spring 34. The cam 31 is provided with an olfset bore 38 having a diameter larger than the diameter of the sealing ball 33 in which the sealing ball 33 is positioned. The spring 34 extends between the bottom 39 of the offset bore 38 and the sealing ball 33 thereby urging the sealing ball into tight engagement with the disc 37. The axis of the ofiset bore 38 is preferably parallel. to the axis of the bore 11 and spaced therefrom a distance equal to the spacing of the axes of the inlet passages 19 and 21 from the axis of the bore 11. Because the spacing of the offset bore 38 is equal to the radial spacing of the inlet passages 19 and 21 rotation of the cam assembly 29 will position the sealing ball 33 adjacent to the opening of one of the inlet passages 19 and 21 in the end wall 12 therebycausing the sealing ball 33 to urge the disc 37 into tight sealing engagementwith the opening of the adjacent inlet passage 19 or 21 therer by isolating this inlet from the bore 11.
The spherical sealing ball 33 which has a di- The cam 31 is formed with a shoulder 41 adjacent to the end of the shaft section 36 which provides a surface against which the thrust bearing 42 is urged. In the preferred embodiment, the thrust bearing is formedof nylon or similar material which has desirable wearing characteristics. Positioned between the thrust bearing 42 and the end face 43 of the bonnet 27 is a shaft seal 44 of the O-ring variety which; is adapted to engage the shaft section 36 and the end face 43,0f the bonnet 27' thereby providing a" fluid. seal therebet'ween.
The outer end of the s'haft'section 36, is formed with a flat 46 which is adapted'to engage; a simi lar flat in the recess 47 formed in the handle 32 thereby preventing a relative rotational movementbetween the cam 31 and the handle'32. A screw 48; is provided to securely fasten the handle 32 to the cam member 31. i
The cam member 31 is formed with a stop surface 49 adapted to engage the stopmember 51 which is secured in the bore 52 in the body 10.. In the preferred embodimentthe stp 51 is adapted to engage and limit the rotation of th e cam member 31 when the sealing ball 33 is positioned adjacent to one or the other of the inlet pasn sages 19 or 21.,
I I It the cam assembly 29 is in the position shown in Fig.
2 fluid under pressure entering the inlet 13 flows through the bore 16 and the inlet passage 19 deflecting the disc 37. From the inlet passage 19 the fluid flows into the bore 11 and out through the outlet 22 to the system to be supplied. The source of fluid under pressure connected to the inlet 14 is isolated from the bore 11 by the disc 37 which is pressed into sealing engagement with the opening of the inlet passage 21 by the sealing ball 33. When the supply of fluid under pressure connected to the inlet 13 is exhausted the cam assembly 29 is rotated until 'the sealing ball 33 is positioned adjacent to the inlet 19 thereby providing fluid communication between the inlet"21' and the bore 11. At this time the exhausted cylinder which is connected to the inlet 13 may be removedand a new cylinder installed at this inlet.
By providing the bore 38 with a diameter larger than the diameter of the ball a good seal of the inlet is insured'even if the bore 38 is not exactly coaxial with the inlet opening being sealed. Reference to Fig. 2 will disclose thatfthe ball 33 will deflect the disc 37 into the inlet opening and automatically align itself relative to the inlet so long as enough clearance is provided between the bore 38, and the ball. are also cliaracteristic of this valve since the ball tends to roll between its positions and since the resilient disc insures aseal even though the valve seat or the ball might not be perfectly formed.
, An'adde'd safety factor is provided since the disc 37 is adapted to'normally engage the end wall 12 so if the pres-v sure within the pressure source is reduced below the pres-; sure within the system the disc 37 acts as a check valve to preventany flow of air into the bore 11 and on into the system thereby preventing any possibility of a combustible mixture being present within the system which could cause explosions and fire hazards.
Having completed a detailed description of a preferred embodiment of the present invention so that others skilled in the art may be able to understand and practice the same, I state that what I desire to secure by Letters Patent is not limited by said preferred embodiment but rather is defined in what is claimed.
What is claimed is: i
l. A throw-over valve comprising a body formed with a main chamber terminating in an end wall, a plurality of inlet passages said body opening into said chamber through; said end wall, an outlet formed in said body in fluid communicationwithsaid chamber in an area spaced Base and certainty of operation from said end wall, a flexible disc positioned against said end wall covering all 'o'f'saidinlet 'passages, a ball in said chamber adapted to engage and urge said disc into sealing engagement with at least one of said inlet passages, means for rolling said ball on the side of the disc away from said inlet passages in a path intersecting the center line of said inlet passages and urging said ball against said disc adjacent to at least one of said inlets, said disc being free to be deflected away from the other of said inlet passages by fluid flow through said passages into said chamber.
2. A throw-over valve comprising a body formed with a main chamber terminating in an end wall, a plurality of inlet passages in said body opening into said chamber through said end wall, an outlet formed in said body in fluid communication with said chamber, a resilient disc positioned against said end wall covering all of said inlet passages, a ball in said chamber adapted toengage and urge said disc into sealing engagement with at least one of said inlet passages, drive means for rolling said ball on the side of the disc away from said inlet passages in a path intersecting the center line of said inlet passages to positions adjacent to each of said inlets, and spring means to urge said ball against said disc, said disc remaining substantially non-rotative relative to the wall during the moving of said ball between positions adjacent to each inlet.
, 3. A throw-over valve comprising a body formed with; i a main bore terminating in a substantially fiat end wall,
a plurality of vinlet passages with their axes parallel to and equally spaced from the axis of said main bore in said body opening into said chamber through said end wall,.an outlet formed in said body in fluid communication withsaid main bore spaced from said end wall, a resilient disc positioned against said end wall covering all of said inlet passages, a cam mounted in said body for rotation about an axis coaxial with said main bore formed with an offset bore parallel to and spaced from the axis of saidg main bore a distance substantially equal to the spacing .of the axes of said inlet passages from the axis of said main bore, a ball in said offset bore adapted to engage and urge said disc into sealing engagement with at leastone of said inlet passages, and spring means to urge saidball against said disc, rotation of said cam rolling said ball onthe side of the disc away from said inlet passages in a path intersecting the center line of said inlet passages from a position adjacent to one of said passages to, PQSltlOI1S121dj3CI1t to the other of said passages, said disc remaining substantially non-rotative relative to said end wall during said rolling of said ball.
4.,A throw-over valve comprising a body formed with a main bore terminating in a substantially flat end wall,
. a plurality of inlet passages with their axes parallel to and equally spaced from the axis of said main bore in said body opening into said chamber through said end wall, an outlet formed in said body in fluid communica-' tion with said main bore spaced from said end wall, a resilient disc positioned against said end wall covering all of said inlet passages, a cam mounted in said body for rotation about an axis coaxial with said main bore formed with an otfset bore parallel to and spaced from the axis of said main bore a distance substantially equal to the spacing of the axes of said inlet passages from the axis of said main bore, a ball in said offset bore adapted to engage and urge said disc into sealing engagement with at least one of said inlet passages, and spring means to urge saidball against said disc, the diameter of said ball being substantially larger than the diameter of said inlet passages and the diameter of said offset bore being substantially larger than the diameter of said ball, rotation of said camrolling said ball on the side of the disc away from said inlet passages in a path intersecting the center line "of said inlet passages from a position adacent to one-of-said" passages topositions. adjacent to the other of said passages, said disc remaining substantial- 1y non-rotative relative to said end Wall during said rolling of said ball.
References Cited in the file of this patent UNITED STATES PATENTS 6 Parker July 23, 1940 Evarts Aug. 7, 1945 Langdon July 19, 1949 Reeves Feb. 14, 1950 Fairchild Aug. 22, 1950 FOREIGN PATENTS Italy 1948 France July 12, 1924
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086746A (en) * 1960-03-23 1963-04-23 Us Industries Inc Kelly valve dynamically balanced in open position
US4531549A (en) * 1982-12-15 1985-07-30 Phillips Petroleum Company Valve means and fluid transport system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US766420A (en) * 1903-07-27 1904-08-02 Elias J Calley Faucet for soda-fountains.
FR578803A (en) * 1924-01-10 1924-10-04 Improvements to valve devices
US1725280A (en) * 1927-05-26 1929-08-20 Kiefer Karl Valve mechanism
US2075458A (en) * 1935-09-13 1937-03-30 Arthur L Parker Disk valve assembly
US2105183A (en) * 1934-11-19 1938-01-11 Harvey S Cover Valve
US2209136A (en) * 1939-04-01 1940-07-23 Arthur L Parker Valve assembly
US2380956A (en) * 1941-06-04 1945-08-07 Bastian Biessing Company Throwover regulator
US2476310A (en) * 1944-12-05 1949-07-19 Jesse D Langdon Valve construction
US2497558A (en) * 1943-11-09 1950-02-14 Donald H Reeves And Associates Fluid valve assembly
US2519448A (en) * 1947-03-14 1950-08-22 Fairchild Gross Mfg Co Mixing valve

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US766420A (en) * 1903-07-27 1904-08-02 Elias J Calley Faucet for soda-fountains.
FR578803A (en) * 1924-01-10 1924-10-04 Improvements to valve devices
US1725280A (en) * 1927-05-26 1929-08-20 Kiefer Karl Valve mechanism
US2105183A (en) * 1934-11-19 1938-01-11 Harvey S Cover Valve
US2075458A (en) * 1935-09-13 1937-03-30 Arthur L Parker Disk valve assembly
US2209136A (en) * 1939-04-01 1940-07-23 Arthur L Parker Valve assembly
US2380956A (en) * 1941-06-04 1945-08-07 Bastian Biessing Company Throwover regulator
US2497558A (en) * 1943-11-09 1950-02-14 Donald H Reeves And Associates Fluid valve assembly
US2476310A (en) * 1944-12-05 1949-07-19 Jesse D Langdon Valve construction
US2519448A (en) * 1947-03-14 1950-08-22 Fairchild Gross Mfg Co Mixing valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086746A (en) * 1960-03-23 1963-04-23 Us Industries Inc Kelly valve dynamically balanced in open position
US4531549A (en) * 1982-12-15 1985-07-30 Phillips Petroleum Company Valve means and fluid transport system

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