US3881672A - Railway train including emergency braking apparatus - Google Patents

Railway train including emergency braking apparatus Download PDF

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Publication number
US3881672A
US3881672A US433230A US43323074A US3881672A US 3881672 A US3881672 A US 3881672A US 433230 A US433230 A US 433230A US 43323074 A US43323074 A US 43323074A US 3881672 A US3881672 A US 3881672A
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United States
Prior art keywords
wheel
branch pipe
wagon
pipe
train
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Expired - Lifetime
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US433230A
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English (en)
Inventor
Roland Gittard
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.)
MINES DE FER DE MAURITANIA SA
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MINES DE FER DE MAURITANIA SA
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Filing date
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Application filed by MINES DE FER DE MAURITANIA SA filed Critical MINES DE FER DE MAURITANIA SA
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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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger

Definitions

  • the present invention relates to apparatus for emergency braking of a railway train, in particular of a mine train, in the event of derailment of a car or wagon of the train.
  • An object of the present invention is to provide a simple apparatus for detecting derailment of a wagon in particular in a mine train of considerable length, and causing the immediate actuation of the automatic brake.
  • apparatus for emergency braking of a railway train in which the brakes are controlled by the pressure in a common manifold, referred to as a train pipe, includes at least one branch pipe connected to the train pipe and so located adjacent a wheel of a wagon as to be engaged and fractured by the wheel if the latter shifts abnormally in relation to the body of the wagon, thereby altering the pressure in the train pipe and applying the brakes throughout the train.
  • the apparatus includes a branch pipe situated above the wheel so that upward movement of the wheel, e.g. due to a broken bearing, will cause the wheel to fracture it.
  • a branch pipe situated above the wheel so that upward movement of the wheel, e.g. due to a broken bearing, will cause the wheel to fracture it.
  • it may include at least one branch pipe horizontally spaced from the rim of a wheel inwardly towards the companion wheel, so that movement of the wheel in that direction, for example due to derailment, will fracture it.
  • it may include a branch pipe extending transversely across the wagon above the axle so as to be capable of being fractured by either wheel.
  • the horizontal branch pipe may be above the floor of the wagon which has in it apertures through which a wheel can project to fracture the branch without damaging the floor.
  • two vertical branch pipes depend from a transverse branch pipe, one adjacent each of the wheels of the axle.
  • the braking system of each car includes a compressed air tank and a brake cylinder connected by a distributor.
  • This distributor is also connected to the common manifold or train-pipe which extends the whole length of the train. When the air pressure in this pipe decreases, the distributor places in communication the tank and the brake cylinder, thus applying the brake.
  • the present invention takes advantage of the abnormal relative displacements between car wheels and chassis which occur in the event of derailment, to connect the trainpipe with the atmosphere and thus cause stoppage of the train.
  • FIG. 1 The wagon shown diagrammatically in FIG. 1 has a horizontal branch pipe 1 extending transversely across the wagon above the axle, and connected to the usual common manifold or train pipe 2. A pressure of air is normally maintained in the latter, and when this is reduced to atmospheric, the brakes all along the train are applied.
  • the level of the branch pipe 1 will depend upon the vertical clearance between the wheel and the wagon when the latter is unloaded, and the variation of this clearance depending on the characteristics of the suspension and working conditions.
  • the branch pipe 1 may be at or below the floor of the wagon, but in the arrangement shown it is above the floor 5 which has in it an aperture 7 above each wheel 4 so that under abnormal conditions the wheel can project up through the aperture and fracture the branch pipe.
  • Each horizontal branch pipe 1 is fitted with a cock (not shown) so that it can be put out of action after damage has occurred and thus permit at least partial movement of the wagon and train.
  • each wheel Depending from the horizontal transverse branch pipe 1 are a pair of vertical branch pipes 3, one adjacent the upper edge of each wheel and displaced from it inwardly, that is to say towards the companion wheel, at a distance of approximately 6 cms. from the inner vertical plane of the wheel.
  • the vertical branch pipe is provided with a weakened section 6 at which fracture will occur.
  • the apparatus in accordance with the invention is very inexpensive; in fact it enables a yard of one thousand cars to be equipped for the purchase price of a single conventional hot-box detector. Moreover, it is applicable to any type of car.
  • This apparatus is applicable as a whole and without modification, other than optionally increasing the section of the branch pipes, to trains fitted with vacuum braking systems, in which the train pipe is connected to a vacuum tank.
  • the one branch pipe being situated above a wheel so that upward movement of the wheel will cause the wheel to fracture it
  • the one branch pipe extending transversely across the wagon above the axle so as to be capable of being fractured by either one of the pair of wheels, and the one branch pipe being above the floor of the wagon, the floor having apertures through which a wheel can project to fracture the one branch pipe without damaging the floor.
  • An apparatus for braking a railway train including at least one wagon having a wheel, an axle connected to the wheel, a common train pipe and the wagon having a brake controlled by the pressure in the train pipe, the improvement comprising at least one branch pipe connected to said train pipe,
  • the one branch pipe being disposed above and spaced from the wheel so as to be engaged and fractured by the wheel upon movement of the wheel relative to said wagon and in a direction toward and into engagement with the one branch pipe.
  • Appatatus as claimed in claim 6 wherein a screwed connection is arranged between the one branch pipe and one of the vertical branch pipes to facilitate replacement.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
US433230A 1973-11-28 1974-01-14 Railway train including emergency braking apparatus Expired - Lifetime US3881672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
OA55071A OA04676A (fr) 1973-11-28 1973-11-28 Dispositif destiné à provoquer, en cas de déraillement d'un wagon d'un convoi ferroviaire, le freinage d'urgence dudit convoi.

Publications (1)

Publication Number Publication Date
US3881672A true US3881672A (en) 1975-05-06

Family

ID=19929266

Family Applications (1)

Application Number Title Priority Date Filing Date
US433230A Expired - Lifetime US3881672A (en) 1973-11-28 1974-01-14 Railway train including emergency braking apparatus

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US (1) US3881672A (fr)
OA (1) OA04676A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269288A (en) * 1979-05-11 1981-05-26 Collins Joseph A Train derail emergency brake system
US4339997A (en) * 1980-06-28 1982-07-20 Chiles David T Automatic emergency activated railway brakes
US4362338A (en) * 1981-02-12 1982-12-07 Sanchez Charles D Safety device to actuate railroad car air brake
US5188038A (en) * 1991-02-11 1993-02-23 Shanley Thomas E Railroad car derailment safety device
US20060122745A1 (en) * 2003-05-15 2006-06-08 Siemens Transportation Systems Gmbh & Co. Kg Detection of derailment by determining the rate of fall

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US752012A (en) * 1904-02-09 vance
US788744A (en) * 1904-06-16 1905-05-02 John B Wright Safety attachment for car-trucks.
US851464A (en) * 1906-12-11 1907-04-23 Robert Port Williams Car-wheel.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US752012A (en) * 1904-02-09 vance
US788744A (en) * 1904-06-16 1905-05-02 John B Wright Safety attachment for car-trucks.
US851464A (en) * 1906-12-11 1907-04-23 Robert Port Williams Car-wheel.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269288A (en) * 1979-05-11 1981-05-26 Collins Joseph A Train derail emergency brake system
US4339997A (en) * 1980-06-28 1982-07-20 Chiles David T Automatic emergency activated railway brakes
US4362338A (en) * 1981-02-12 1982-12-07 Sanchez Charles D Safety device to actuate railroad car air brake
US5188038A (en) * 1991-02-11 1993-02-23 Shanley Thomas E Railroad car derailment safety device
US20060122745A1 (en) * 2003-05-15 2006-06-08 Siemens Transportation Systems Gmbh & Co. Kg Detection of derailment by determining the rate of fall
US7937192B2 (en) * 2003-05-15 2011-05-03 Siemens Aktiengesellschaft Osterreich Detection of derailment by determining the rate of fall

Also Published As

Publication number Publication date
OA04676A (fr) 1980-07-31

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