US2595466A - Brake pipe vent control - Google Patents

Brake pipe vent control Download PDF

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Publication number
US2595466A
US2595466A US75824A US7582449A US2595466A US 2595466 A US2595466 A US 2595466A US 75824 A US75824 A US 75824A US 7582449 A US7582449 A US 7582449A US 2595466 A US2595466 A US 2595466A
Authority
US
United States
Prior art keywords
brake
piston
valve
pressure
casing
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
US75824A
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English (en)
Inventor
Keller Siegfried
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US2595466A publication Critical patent/US2595466A/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
    • B60T15/42—Other control devices or valves characterised by definite functions with a quick braking action, i.e. with accelerating valves actuated by brake-pipe pressure variation
    • 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

Definitions

  • control valve of each wagon braked should, when the indirect-acting pneumatic brakes are applied, automatically produce a specific decrease in pressure in the continuous brake-line with a view to achieving a quick response of the brakes throughout the train.
  • the invention relates to a device for indirectacting pneumatic brakes for achieving a sudden tapping of the pressure medium in the continuous brake-line at the moment when the brakes are first applied, said device comprising a rocker which is controlled by a piston actuated by the drop in pressure in the brake-line and momentarily opens a valve leading from the brake-line to the atmosphere, being thereupon tipped up by the movement of said piston to such an extent that the operated valve can return to'its position of closure, said rocker being, after the brakes have been initially applied, held in its tipped-up position, independently of the further movements of the piston operating it, by a looking member controlled by the brake cylinder pressure, until such time as the pressure in the brake cylinder has dropped to a pre-determined minimum value upon the release of the brake.
  • I designates a known type of control valve for indirect-acting pneumatic brakes, II the compressed air reservoir, III the brake cylinder, IV the rocker accelerator, V the locking member.
  • the brake-line I is connected, in response to a decrease in pressure in the brake-line I effected from the drivers cabin with a view to app y the brakes, to the left as a result of the throttling effect of the duct 2.
  • the guide bush 4, in which the rocker 5 (comprising two arms l1, l8 forming a right angle) is pivotally mounted at 6, is thereby likewise displaced out of a rest position to the left in opposition to the slight pressure exerted by the spring 7.
  • the arm ll of the rocker 5 which, in the rest position shown in the drawing is in alignment with the tappet 8 of the accelerator valve 9, engages this tap'pet and opens the valve against the influence of a spring H5 pressing the valve on its seat.
  • the brake line I is connected with the atmosphere through the housing l5. Owing to the sudden escape of compressed air the piston 3 is impelled still further to the left to a working position. Shortly before reaching this position the arm 58 of the rocker 5 bears against the edge H ⁇ of the housing I5, whereupon it is pivoted about the pin 6. At this moment the tappet 8 of the valve 9 is released and the latter is closed again by the spring It.
  • the guide sleeve i is arrested by the plunger II in the groove [2 as soon as a specific brake cylinder pressure on the piston Hi corresponding to the first pressure stage is produced via the conduit I3. Only when, upon release of the brakes-- which is performed by increasing the pressure in the brake pipe l-the brake cylinder pressure has dropped below that of the first pressure stage, can the brake-line pressure acting on the plunger ll overcome the brake cylinder pressure exerted on the piston 14, whereupon the guide-sleeve t is released and slides back to its initial position under the pressure exerted by the spring I, to operate again, in the manner described, when the brakes are again applied.
  • a pneumatic brake in combination with a brake line, a brake cylinder and a compressed air reservoir, an accelerator valve having a valve seat, a movable valve body and a spring pressing said valve body against said valve seat; a control valve comprising a movable pressure-actuated piston, a cylinder containing said piston and u-havins, o da o ne ed w h-sai brake n and the other side connected withvsaidcompressed air reservoir, whereby said piston is actuated by difference in pressure between said brake line and said compressed air reservoir, a casing communicating with said cylinder, a rocker, a bush movable along with said piston and pivotally supporting said rocker, said rocker being movable along with said piston in the direction of movement of said valve body to open said accelerator valve against the pressure of said spring when said piston is moved, said casing connecting said brake line with said accelerator valve, said casing having a stop engaging a part of said rocker during movement of said piston and moving said rocker
  • a pneumaticbrake having a brake line
  • a casing connected with the brake line, a pistonmovable Within said casing and having one side subjected to pressure in said brake line, a compressed air reservoir connected with said casing and supplying compressed air to the other side of said piston to normally balance said piston, whereby said piston is moved when pressure drops in said brake line
  • a valve in said casing for connecting said one side of the piston with the atmosphere and having a valve seat, a valve body and resilient means pressing said valve body against said valve seat to maintain said valve normally closed
  • a member movable along with the piston from a rest position to a working position said member engaging said valve body during this movement and opening the valve against the action of said resilient means to vent air from said brake line
  • said casing comprising a member engaging the first-mentioned member during the movement of the piston and causing the first-mentioned member to disengage from said valve body, whereupon said valve is closed by said resilient means and the venting of air from said brake line is interrupted.
  • a pneumatic brake having a brake line. in combination, a casing connected with the brake line, a piston movable within said casing and having one side subjected to pressure in said brake line, a compressed air reservoir connected with said casing and supplying compressed air to the other side of said piston to normally balance said piston, whereby said .piston is moved when pressure drops in said brake line, a valve in said casing for connecting said one side of the piston with the atmosphere and having a valve seat, a valve body and resilient means pressing said valve body against said valve seat to maintain said valve normally closed, a member movable along with said piston from a rest position to a working position, said member engaging said valve body during this movement and opening the valve against the action of said resilient means to vent air from .said brake line, said casing comprising a member which is out of engagement with the first-mentioned member in the rest position of the latter and which engages the first-mentioned member during the movement of the piston to disengage the firstmentioned member from said valve
  • a pneumatic brake having a brake line
  • a casing connected with the brake line, a piston movable within said casing and having one side subjected to pressure in said brake line, a compressed air reservoir connected with said casing and supplying compressed air to the other side of said piston to normally balance said piston, whereby said piston is moved when pressure drops in ,said brake line, a valve in said casing for connecting said one side of the piston with the atmosphere and having a valve seat, a.
  • valve body and resilient means pressing said valve body against said valve seat to maintain said valve normally closed
  • a guide bush located in said casing and movable by said piston from a rest position to a working position
  • a rocker mounted upon said guide bush and movable along with said guide bush as well as transverse- 1y thereto, said rocker engaging said valve body during the movement to a working position and opening the valve against the action of said resilient means to vent air from said brake line
  • said casing comprising, a stop engaging said rocker during the movement of the piston and causing the rocker close to the end of this movement to move transversely to the guide bush and thereby become disengaged from said valve body, whereupon said valve is closed by said resilient means and the venting of air from said brake line is interrupted.
  • a pneumatic brake having a brake line and a brake cylinder
  • a casing connected with the brake line
  • a piston movable within said casing and having one side subjected to pressure in said brake line
  • a compressed air reservoir connected with said casing and supplying compressed air to the other side of said piston to normally balance said piston, whereby said piston is moved when pressure drops in said brake line
  • a valve in said casing for connecting said one side of the piston with the atmosphere and having a valve seat, a valve body and resilient means pressing said valve body against said valve seat to maintain said valve normally closed
  • a member movable along with the piston from a rest position to a working position, said member having means engaging said valve body during this movement and opening the valve against the action of said resilient means to vent air from said brake line
  • said casing comprising a member engaging said means during the movement of the piston and causing the means to disengage from said valve body, a locking device for locking said first-mentioned member in said working position, and pneumatic means connected with said locking

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Braking Arrangements (AREA)
US75824A 1948-02-16 1949-02-11 Brake pipe vent control Expired - Lifetime US2595466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3208648 1948-02-16

Publications (1)

Publication Number Publication Date
US2595466A true US2595466A (en) 1952-05-06

Family

ID=38464223

Family Applications (1)

Application Number Title Priority Date Filing Date
US75824A Expired - Lifetime US2595466A (en) 1948-02-16 1949-02-11 Brake pipe vent control

Country Status (6)

Country Link
US (1) US2595466A (ru)
DE (1) DE802878C (ru)
ES (1) ES187041A1 (ru)
FR (3) FR980975A (ru)
GB (1) GB661572A (ru)
NL (1) NL81175C (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714534A (en) * 1952-01-17 1955-08-02 Mach Tool Works Oerlikon Admin Control device for compressed air brakes
US2829926A (en) * 1951-10-11 1958-04-08 Mach Tool Works Oerlikon Admin Fluid pressure brake

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3864677D1 (de) * 1988-02-17 1991-10-10 Oerlikon Knorr Eisenbahntech Beschleunigungsvorrichtung an indirekt wirkender druckluftbremse.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551822A (en) * 1895-12-24 Automatic fluid-pressure brake apparatus
US1404102A (en) * 1914-05-28 1922-01-17 Dubois Robert Tail-valve apparatus for compressed-air brakes
US1881209A (en) * 1930-08-22 1932-10-04 Westinghouse Air Brake Co Fluid pressure brake
US2032145A (en) * 1932-03-12 1936-02-25 Westinghouse Air Brake Co Fluid pressure brake
FR72766E (fr) * 1958-01-02 1960-07-22 Us Rubber Co Mousses cellulaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551822A (en) * 1895-12-24 Automatic fluid-pressure brake apparatus
US1404102A (en) * 1914-05-28 1922-01-17 Dubois Robert Tail-valve apparatus for compressed-air brakes
US1881209A (en) * 1930-08-22 1932-10-04 Westinghouse Air Brake Co Fluid pressure brake
US2032145A (en) * 1932-03-12 1936-02-25 Westinghouse Air Brake Co Fluid pressure brake
FR72766E (fr) * 1958-01-02 1960-07-22 Us Rubber Co Mousses cellulaires

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829926A (en) * 1951-10-11 1958-04-08 Mach Tool Works Oerlikon Admin Fluid pressure brake
US2714534A (en) * 1952-01-17 1955-08-02 Mach Tool Works Oerlikon Admin Control device for compressed air brakes

Also Published As

Publication number Publication date
FR980975A (fr) 1951-05-21
NL81175C (ru)
FR62619E (fr) 1955-06-15
FR70359E (fr) 1959-04-06
GB661572A (en) 1951-11-21
ES187041A1 (es) 1949-04-01
DE802878C (de) 1951-02-26

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