US2256325A - Rail brake - Google Patents

Rail brake Download PDF

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Publication number
US2256325A
US2256325A US272808A US27280839A US2256325A US 2256325 A US2256325 A US 2256325A US 272808 A US272808 A US 272808A US 27280839 A US27280839 A US 27280839A US 2256325 A US2256325 A US 2256325A
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US
United States
Prior art keywords
brake
bars
rail
braking
rails
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
US272808A
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English (en)
Inventor
Posentrup Heinrich
Schutte Hans
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.)
Rheiner Maschinenfabrik Windhoff A-G
WINDHOFF RHEINER MASCHF
Original Assignee
WINDHOFF RHEINER MASCHF
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 WINDHOFF RHEINER MASCHF filed Critical WINDHOFF RHEINER MASCHF
Application granted granted Critical
Publication of US2256325A publication Critical patent/US2256325A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
    • B61K7/02—Track brakes or retarding apparatus
    • B61K7/04—Track brakes or retarding apparatus with clamping action
    • B61K7/08—Track brakes or retarding apparatus with clamping action operated pneumatically or hydraulically

Definitions

  • This invention relates to a rail brake and has particular reference to rail brakes of the type in which braking rails or bars are positioned on both sides of the track rails and forced against the wheel by feeding members'in the form of thrust rods or the like.
  • the thrust rods are arranged to act upon the outer and inner braking bars on adjacent points over the length of the'rails and each braking rail is adjusted in such a manner that it is somewhat pressed aside by each wheel as it enters the brake.
  • Fig. 1 is a diagrammatic bottom view showing a rail brake including braking rails and associated feeding means and having the invention applied thereto.
  • Figs. 2 and 3 are cross sectional views on line II-1I and IIIIII, respectively, of Fig. l, viewed in the direction of the arrows.
  • Fig. 4 is a schematic plan view of a wheel operatively engaged in a rail brake of the type shown in Figs. 1-3.
  • a pair of inner brake rails or bars b which in this case take the form of double- T irons, are supported on cross bars 1, by means of pivoted supports it and holders t.
  • Thrust rods h are also linked to the holders t at e (Fig. 1), and acted upon knee-lever fashion by the piston rod n of a cylinder and piston system c which can be operated by compressed air. In this manner, it is possible to feed the braking bars 22 towards the'rail p of the rail track, in order to operate the brake, and to retract them therefrom in order to put. the brake out of action.
  • Outer braking bars a are mounted at f on kneeor L-shaped holders 0 extending underthe rails 10 of the track and supported on cross bars 1-, by means of pivoted supports q.
  • Levers s are pivoted at s and connected at their lower ends to, theholder o and, at their upper ends; to rodsi which are operated knee-lever fashion by the piston rod 112 of a cylinder and piston system d, by means of compressed air.
  • each wheel 9 entering the brake is at first engaged and braked at its inner side only, by the inner braking bar 12, while the braking action by the outer braking rail a becomes effective at a later moment.
  • a wheel 9 is shown between the two braking bars a and b.
  • the wheel is drawn at a larger scale in an axial direction than in a radial direction, so as to show more clearly the points of engagement of the wheel with the braking rails.
  • the wheel is diagonally engaged by the two braking bars, so that the maximum pressure from the outer side acts on the front side of the wheel while the maximum pressure from the inner side acts on the rear side of the wheel, or vice versa, depending on the travelling direction and the position of the wheel in the brake. It will be understood that the tendency of the wheels of climbing up in the brake is thus considerably reduced.
  • the operating devices 0 at the ends of the brake in a manner to exert a lower pressure than that caused by the operating devices 0 in the middle of the brake, whereby the tendency of the wheels of climb-ing up in the brake can be further reduced.
  • a rail brake comprising a pair of braking bars on the outer and inner sides of a rail track
  • each braking bar acting upon each braking bar at spaced points along the track rail for feeding said braking bars towards the associated track rail, the points of action of the feeding members for the outer braking bars being staggered with respect to the points of action of the feeding members for the inner braking bars, and the feeding members at the ends of the rail brake being adjusted to produce less braking action than the remaining feeding members.
  • a brake construction for rail tracks comprising a pair of rails, two pairs of brake bars, inner and outer, respectively, a brake bar being positioned at each side of each of said rails, and a plurality of independent devices for reciprocable movement of said bars toward and from said rails, one of said devices being adapted to move said inner bars, another of said devices being adapted to move said outer bars, each device for moving said outer bars being positioned between adjacent devices for moving said inner bars whereby diagonal engagement of a wheel with an inner and an adjacent outer brake bar is caused when said wheel is moving along a track rail and said devices move said outer andinner bars thereagainst.
  • a brake construction for rail tracks comprising a pair of rails, two pairs of brake bars, inner and outer, respectively, a brake bar being positioned at each side of each of said rails, and a plurality of independent devices for reciprocable movement of said bars toward and from said rails, one of said devices being adapted to move said inner bars, another of said devices being adapted to move said outer bars, said one of said devices alternating with said another of said devices whereby diagonal engagement of a wheel with an inner and an adjacent outer brake bar is caused when said wheel is moving along a track rail and between said brake bars moved thereagainst.
  • a brake structure for rail tracks comprising a pair of rails, a pair of inner brake bars, a pair of outer brake bars, said inner brake bars extending adjacent said rail track beyond said outer brake bars, and a plurality of independently actuating devices, one of said devices being disposed adjacent each end of said pair of said inner brake bars, another of said devices being positioned between both of said one actuating devices, each of said one devices being adapted to reciprocably shift said pair of inner brake bars relatively to said rails, said another of said devices being adapted to reciprocably shift said pair of outer brake bars relatively to said rails and being actuatable with retardation with re- .spect to the action of said one devices, whereby diagonal engagement of a wheel with an in ner and an adjacent outer brake bar may be caused when said wheel is moving along said rail.
  • a brake structure for rail tracks comprising a pair of rails, a pair of inner brake bars positioned between said pair of rails and extendinglengthwise thereto, a pair of outer brake bars, and series of independently actuating devices for movement of said brake bars toward and from said rails, one of said series being disposed adjacent each end of said pair of said inner brake bars, another of said series being disposed adjacent each end of said pair of said outer brake bars and between both ends of said pair of said inner brake bars, said one series alternating with said another series and being actuable prior to said latter series whereby diagonal engagement of wheels with inner and adjacent outer brake bars may be caused when said wheels run along said rail track.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Arrangements (AREA)
US272808A 1937-06-27 1939-05-10 Rail brake Expired - Lifetime US2256325A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1937R0099704 DE700607C (de) 1937-06-27 1937-06-27 Gleisbremse
FR852809T 1939-04-07
BE433792T 1939-04-12

Publications (1)

Publication Number Publication Date
US2256325A true US2256325A (en) 1941-09-16

Family

ID=7992621

Family Applications (1)

Application Number Title Priority Date Filing Date
US272808A Expired - Lifetime US2256325A (en) 1937-06-27 1939-05-10 Rail brake

Country Status (4)

Country Link
US (1) US2256325A (enrdf_load_stackoverflow)
BE (1) BE433792A (enrdf_load_stackoverflow)
DE (1) DE700607C (enrdf_load_stackoverflow)
FR (1) FR852809A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173122B (de) * 1960-01-08 1964-07-02 Thyssen Ind G M B H In einer Gleiskruemmung angeordnete Gleisbremse

Also Published As

Publication number Publication date
BE433792A (enrdf_load_stackoverflow) 1939-05-31
DE700607C (de) 1942-02-21
FR852809A (fr) 1940-03-06

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