US1025341A - Retaining-valve device. - Google Patents

Retaining-valve device. Download PDF

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Publication number
US1025341A
US1025341A US1909516129A US1025341A US 1025341 A US1025341 A US 1025341A US 1909516129 A US1909516129 A US 1909516129A US 1025341 A US1025341 A US 1025341A
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US
United States
Prior art keywords
valve
pressure
retaining
brake cylinder
port
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
Inventor
Walter V Turner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Priority to US1909516129 priority Critical patent/US1025341A/en
Application granted granted Critical
Publication of US1025341A publication Critical patent/US1025341A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/54—Other control devices or valves characterised by definite functions for controlling exhaust from triple valve or from brake cylinder
    • 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
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7905—Plural biasing means
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7929—Spring coaxial with valve

Definitions

  • This invention relates to retaining valves, and is more particularly adapted to be em- ⁇ ployed in connection with an automatic fluid pressure brake system for controlling the brake cylinder exhaust from the triple valve.
  • a retaining valve connected by a pipe to the triple valve exhaust is usually employed for holding a certain degree of pressure in the brake cylinder, so that the triple valve may be moved to release position and the auxiliary reservoir recharged without releasing the brakes, and in heavy freight service particularly on long grades, it has been proposed to employ a retaining valve adapted to hold the usual degree of pressure in the brake cylinder when turned to one position on light cars and having another position in which the retaining valve is 'adapted to hold a higher degree of pressure in the brake cylinder where the car is loaded.
  • the principal object of my invention is to provide an improved retaining valve device of the above character having fluid pressure operated means for varying the load on the retaining valve.
  • Figure 1 is a sectional view of a retaining valve device embodying my improvement
  • Fig. 2 a fragmentary sectional view showing the controlling cock in position for effecting the adjustment of the retaining valve to the higher degree of pressure
  • Fig. 3 a similar view showing the cock in the low pressure load position.
  • the retaining valve device may comprise a casing 1 having a chamber 2, within which is mounted a weight 3 carried by the usual retaining valve 4.
  • I provide a bushing 5 adapted to be secured in the casing cap 6 and extending into a chamber 7 of the weight 3.
  • a piston 8 is iitted within the bushing and a spring 9 is interposed between the weight 3 and the Specification of Letters Patent.
  • a passage 10 leads to a controlling cock 11 having three ports 12, 13, and l4lopening into a common central cavity15.
  • the port 14 registers with the inlet port 1G leading to the triple valve exhaust
  • the port 13 registers with exhaust port 17, so that in this position the triple valve exhaust is open to the atmosphere.
  • port 13 registers with port 1G and a port extension 18 of port 12 registers with port 19 leading to the valve 4, so
  • the spring 9 is compressed a certain definite amount and thereby the load acting on the valve 4 is increased by the action of the spring and the valve 4 will then open only when the brake cylinder pressure exceeds the load on t-he valve due to the combined action of the weight 3 and the spring 9.
  • a pressure retaining valve device for the brake cylinder of a Huid pressure brake system comprising a loaded valve and fluid pressure operated means for varying the load on said valve to thereby retain different degrees of pressure in the brake cylinder.
  • a pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a cock, a loaded valve, and means operated by fluid pressure supplied upon movement of the cock for varying the load on said valve and thereby the degree of pressure retained in the brake eylinder.
  • a pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a loaded valve, a spring adapted to act on the valve, and fluid pressure operated means adapted to compress the spring for increasing the load on the valve and thereby the pressure retained in the brake cylinder.
  • a pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a cock, a Weighted valve, a spring adapted to act on the valve, and a piston operated by fluid pressure admitted by the movement of the cock f'oi1 compress- 25 ing said spring and thereby increasing the load on the valve.
  • a pressure rctaining valve device for the brake cylinder 30 comprising a valve subject to the opposing pressures of the brake cylinder and a spring for regulating the degree of pressure retained in the brake cylinder and a piston operated by fluid under pressure for increns- 35 ing the load on said valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Description

UNITED STATES PATENT OFFICE.
WALTER V. TURNER, OF EDG-EWOOD, PENNSYLVANIA, ASSIGNOR T0 THE WESIING- HOUSE AIR BRAKE COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.
RETAINING-VALVE DEVICE.
To all whom it may concern: I
Be it known that I, WALTER V. TURNER, a citizen of the United States, residing at Edgewood, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Retaining` Valve Devices, of which the following is a specification.
This invention relates to retaining valves, and is more particularly adapted to be em-` ployed in connection with an automatic fluid pressure brake system for controlling the brake cylinder exhaust from the triple valve.
More especially in freight service, a retaining valve connected by a pipe to the triple valve exhaust is usually employed for holding a certain degree of pressure in the brake cylinder, so that the triple valve may be moved to release position and the auxiliary reservoir recharged without releasing the brakes, and in heavy freight service particularly on long grades, it has been proposed to employ a retaining valve adapted to hold the usual degree of pressure in the brake cylinder when turned to one position on light cars and having another position in which the retaining valve is 'adapted to hold a higher degree of pressure in the brake cylinder where the car is loaded.
The principal object of my invention is to provide an improved retaining valve device of the above character having fluid pressure operated means for varying the load on the retaining valve.
In the accompanying drawing; Figure 1 is a sectional view of a retaining valve device embodying my improvement; Fig. 2, a fragmentary sectional view showing the controlling cock in position for effecting the adjustment of the retaining valve to the higher degree of pressure, and Fig. 3 a similar view showing the cock in the low pressure load position.
As shown in the drawing, the retaining valve device may comprise a casing 1 having a chamber 2, within which is mounted a weight 3 carried by the usual retaining valve 4.
Various constructions may be employed for varying the load on the valve 4, but preferably I provide a bushing 5 adapted to be secured in the casing cap 6 and extending into a chamber 7 of the weight 3. A piston 8 is iitted within the bushing and a spring 9 is interposed between the weight 3 and the Specification of Letters Patent.
Application led September 3, 1909.
Patented May 7 1912.
serial No. 516,129.
piston. From the space at the outer face of said piston a passage 10 leads to a controlling cock 11 having three ports 12, 13, and l4lopening into a common central cavity15. In one position, as shown in Fig. 1, the port 14 registers with the inlet port 1G leading to the triple valve exhaust, and the port 13 registers with exhaust port 17, so that in this position the triple valve exhaust is open to the atmosphere. In the position shown in Fig. 3 port 13 registers with port 1G and a port extension 18 of port 12 registers with port 19 leading to the valve 4, so
that fluid under pressure can only escape by `lifting the weighted valve 4, the chamber 2 being provided with an atmospheric port 20, to permit the exhaust of air when the valve is lifted from its seat. Thus it will be seen that the retaining valve is subject in this position to the usual weight for retaining a certain low degree of pressure in the brake cylinder, usually about 15 pounds. When the cock 11 is' turned to the position shown in Fig. 2 the port 12 registers with port 19 and an extension port 21 of port 14 registers with port 16 and also with passage 10, so that, while opening communication to the retaining valve 4, air is also admitted to the top of piston 8 through the passage 10 and forces the piston to a seat 22 provided at the bottom of the bushing 5. By this means the spring 9 is compressed a certain definite amount and thereby the load acting on the valve 4 is increased by the action of the spring and the valve 4 will then open only when the brake cylinder pressure exceeds the load on t-he valve due to the combined action of the weight 3 and the spring 9.
It will now be apparent that I have provided a compact retaining valve structure adapted to operate in the usual manner for retaining the ordinary degree of pressure in the brake cylinder, while by simply admitting iiuid under pressure to the piston 8 the load on the retaining valve is increased a definite amount, so that a higher degree of pressure may be retained in the brake cylinder of a loaded car.
Having now described my invention, what I claim as new and desire to secure by Letters Patent, is
1. A pressure retaining valve device for the brake cylinder of a Huid pressure brake system comprising a loaded valve and fluid pressure operated means for varying the load on said valve to thereby retain different degrees of pressure in the brake cylinder.
2. A pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a cock, a loaded valve, and means operated by fluid pressure supplied upon movement of the cock for varying the load on said valve and thereby the degree of pressure retained in the brake eylinder.
3. A pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a loaded valve, a spring adapted to act on the valve, and fluid pressure operated means adapted to compress the spring for increasing the load on the valve and thereby the pressure retained in the brake cylinder.
4. A pressure retaining valve device for the brake cylinder of a fluid pressure brake system comprising a cock, a Weighted valve, a spring adapted to act on the valve, and a piston operated by fluid pressure admitted by the movement of the cock f'oi1 compress- 25 ing said spring and thereby increasing the load on the valve.
5. In a fluid pressure brake, the Combination with a brake cylinder, of a pressure rctaining valve device for the brake cylinder 30 comprising a valve subject to the opposing pressures of the brake cylinder and a spring for regulating the degree of pressure retained in the brake cylinder and a piston operated by fluid under pressure for increns- 35 ing the load on said valve.
In testimony whereof I have hereunto set my hand.
lVALTER V. TURNER. Witnesses:
B. A. OLIVER,
A. M. (ELEMENTS.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
US1909516129 1909-09-03 1909-09-03 Retaining-valve device. Expired - Lifetime US1025341A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509623A (en) * 1945-02-24 1950-05-30 Leo L Jaskey Means for operating collapsible vehicle tops
US2612838A (en) * 1949-03-01 1952-10-07 Allis Chalmers Mfg Co Fluid pressure control apparatus
US2616450A (en) * 1947-04-02 1952-11-04 Flight Refueling Ltd Pilot controlled valve with pressure surge relief
US2697327A (en) * 1948-01-19 1954-12-21 Bendix Aviat Corp Fuel regulator for intermittent jet engines
US2890715A (en) * 1955-08-26 1959-06-16 Warner Swasey Co Multi-pressure relief valve
US2990850A (en) * 1956-09-27 1961-07-04 Clark Equipment Co Pressure regulator mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509623A (en) * 1945-02-24 1950-05-30 Leo L Jaskey Means for operating collapsible vehicle tops
US2616450A (en) * 1947-04-02 1952-11-04 Flight Refueling Ltd Pilot controlled valve with pressure surge relief
US2697327A (en) * 1948-01-19 1954-12-21 Bendix Aviat Corp Fuel regulator for intermittent jet engines
US2612838A (en) * 1949-03-01 1952-10-07 Allis Chalmers Mfg Co Fluid pressure control apparatus
US2890715A (en) * 1955-08-26 1959-06-16 Warner Swasey Co Multi-pressure relief valve
US2990850A (en) * 1956-09-27 1961-07-04 Clark Equipment Co Pressure regulator mechanism

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