GB1596002A - Fastening railwy rails to concrete railway sleepers - Google Patents

Fastening railwy rails to concrete railway sleepers Download PDF

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Publication number
GB1596002A
GB1596002A GB512578A GB512578A GB1596002A GB 1596002 A GB1596002 A GB 1596002A GB 512578 A GB512578 A GB 512578A GB 512578 A GB512578 A GB 512578A GB 1596002 A GB1596002 A GB 1596002A
Authority
GB
United Kingdom
Prior art keywords
retaining member
shoulder
arch
sleeper
leg
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
Application number
GB512578A
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.)
Pandrol Ltd
Original Assignee
Pandrol Ltd
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 Pandrol Ltd filed Critical Pandrol Ltd
Priority to GB512578A priority Critical patent/GB1596002A/en
Publication of GB1596002A publication Critical patent/GB1596002A/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/04—Making metal objects by operations essentially involving machining but not covered by a single other subclass involving slicing of profiled material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)

Description

(54) FASTENING RAILWAY RAILS TO CONCRETE RAILWAY SLEEPERS (71) We, PANDROL LIMITED, a British company, of 9, Holborn, London ECIN 2NE, do hereby declare the invention, which was communicated from B. Sardoni, of Italian nationality, of Italy via Torino 21, 10071 Borearo (Torinese) for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a retaining member suitable for incorporation in a concrete railway sleeper, a concrete railway sleeper with four such members in it and a railway rail-and-fastening assembly including the sleeper.
According to a first aspect of the invention, there is provided a retaining member suitable for incorporation in a concrete railway sleeper to provide an arch above the top of the sleeper to receive an upwardly pressing part of a clip for holding down a rail, the retaining member being somewhat U-shaped and thus having first and second legs extending from opposite ends of an intermediate portion which provides said arch and the retaining member having been made by a process including rolling a long piece of metal to the desired somewhat U-shaped cross-section and cutting it transversely to produce a number of shorter somewhat Ushaped parts. each of the legs having a length several times the maximum thickness of the retaining member.
If desired, before or after the shorter somewhat U-shaped parts are cut from the long piece of metal, one leg or each leg of each of them has a piece cut out of it so that the leg is bifurcated.
On either or both of the legs there may be a shoulder which faces upwardly when the retaining member is placed in a position with the arch uppermost and the free ends of the legs lowermost and about equidistant from a vertical plane which passes through the top of the arch, the shoulder being on the outside of the retaining member at the top of the leg concerned, the or each shoulder having been formed during the rolling operation. Preferably, the or each shoulder has a surface which is substantially flat and horizontal or inclined by only a few degrees to the horizontal when the retaining member is in said position. If there are the two shoulders, one of them may be higher than the other, for example between 1 cm. and 3cm., preferably about 2 cm., higher.
According to a second aspect of the invention. there is provided a concrete railway sleeper having incorporated in it four retaining members according to the first aspect of the invention, with or without any one or any combination of the further features specified above.
According to a third aspect of the invention, there is provided a railway rail-andfastening assembly comprising a concrete railway sleeper according to the second aspect of the invention, two rails resting crosswise on the sleeper, one between two adjacent ones of the arches and the other between another two adjacent ones of the arches, and four railway rail-fastening clips holding down the rails, each clip having a part which has been driven in a respective one of the arches.
In the accompanying drawings:- Figure I illustrates a side view of an assembly comprising a concrete railway sleeper according to Patent No. 1,059,190, with two rails secured to it, and Figures 2 to 5 show views of a retaining member according to the present invention which can be used in a modification of the assembly shown in Figure 1.
Figure 1 shows two flange-footed rails I resting on rubber pads 2 which are placed on the top of a concrete railway sleeper 3, the rails being parallel and crosswise with respect to the sleeper and spaced apart in accordance with the gauge of the track. On opposite sides of each rail there are two passages in which are driven substantially straight legs 7, constituting the "first portions" of two clips according to claim 1 of expired British Patent No. 861.473 or claim 1 of British Patent No.
1,213.762. Each of these clips has its "third portion" 8 resting on the rail base or flange and its "fifth portion" 9 bearing upon a portion of a retaining member 10. The meanings of the terms "first portion", "third portion" and "fifth portion" will be apparent from the specification of Patent No. 861,437.
It will be seen that in each half of the length of the sleeper there are two of the passages spaced apart in the length direction of the sleeper by a distance a little greater than the width of the rail base or flange. Each passage is substantially straight and extends in the width direction of the sleeper and is open at both ends. Each passage is formed between the upper surface Il of the concrete and a portion 12 of a retaining member, which portion 12 forms an arch above the surface 11. There are four retaining members in all.
Just beyond each of the four arches, considered from the nearest adjacent arch, there is a further portion 13 which extends parallel to the upper surface of the concrete and in contact with that surface and it is upon this portion 13 that the portion 9 of the clip rests.
As shown in the specification of Patent No.
1,213,762, an insulator could electrically insulate the portion 8 of each clip and the adjacent retaining member from the rail flange.
The present invention concerns a modified form of the retaining member. This is shown in Figures 2 to 5 and it will be seen that it is somewhat U-shaped and thus has first and second legs 21 and 22 extending from opposite ends of an intermediate portion 23 which provides an arch above the surface of the concrete. The portion 23 also provides at the top of the leg 21 an upwardly-facing shoulder 24 and at the top of the leg 22 an upwardly-facing shoulder 25 which is about 2 cm. higher than the shoulder 24 when the U of the retaining member is inverted. as shown in Figure 2, so that the arch is uppermost and the free ends of the legs 21 and 22 are lowermost and about equidistant from a vertical plane which passes through the top of the arch.Each shoulder is on the outside of the retaining member and has a surface which is substantially flat and horizontal or inclined by only a few degrees to the horizontal when the retaining member is in the position shown in Figure 2. The shoulder 25 has a portion 9 of a clip bearing upon it. the portion 7 of the clip lies under the arch 23 and presses upwardly upon it and the shoulder 24 lies flush with the surface 11 of the concrete and projects underneath the rail or very close to the rail. When the concrete sleeper is cast in a mould, the shoulder 24 makes contact with the bottom of the mould and prevents the retaining member from turning in the mould.
Each leg 21 and 22 has a length several times the maximum thickness of the retaining member and is bifurcated by virtue of a piece having been cut out of it, leaving a recess 26 or 27, the recess 26 in the leg 21 being longer than the recess 27 in the leg 22 and both recesses narrowing, progressing downwardly, so that the two limbs on either side of each recess widen, progressing downwardly (considering Figures 2 to 4).
Four retaining members like that shown in Figures 2 to 5 can be incorporated in a concrete sleeper and used in an assembly which is otherwise as described above with reference to Figure 1.
The retaining members are made by a process which includes rolling a long piece of steel to the desired somewhat U-shaped cross-section exactly the same as that shown in Figure 2 or perhaps the same except that the legs 21 and 22 are straight. Then the long piece of steel is cut into shorter pieces by cuts perpendicular to its length and then each shorter piece has its legs 21 and 22 bent (if they were straight after the rolling operation) and pieces cut out of them to form the recesses 26 and 27. Alternatively, it would be possible to cut out the pieces to form the recesses 26 and 27 before cutting the long piece of steel transversely into shorter lengths.
WHAT WE CLAIM IS: 1. A retaining member suitable for incorporation in a concrete railway sleeper to provide an arch above the top of the sleeper to receive an upwardly pressing part of a clip for holding down a rail, the retaining member being somewhat U-shaped and thus having first and second legs extending from opposite ends of an intermediate portion which provides said arch and the retaining member having been made by a process including rolling a long piece of metal to the desired somewhat U-shaped cross-section and cutting it transversely to produce a number of shorter somewhat U-shaped parts.
each of the legs having a length several times the maximum thickness of the retaining member.
2. A retaining member according to claim I and made by a process in which, before or after the shorter somewhat Ushaped parts are cut from the long piece of metal, one leg or each leg of each of them has a piece cut out of it so that the leg is bifurcated.
3. A retaining member according to claim I or 2, having a shoulder which faces upwardly when the retaining member is placed in a position with the arch uppermost
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    with the gauge of the track. On opposite sides of each rail there are two passages in which are driven substantially straight legs 7, constituting the "first portions" of two clips according to claim 1 of expired British Patent No. 861.473 or claim 1 of British Patent No.
    1,213.762. Each of these clips has its "third portion" 8 resting on the rail base or flange and its "fifth portion" 9 bearing upon a portion of a retaining member 10. The meanings of the terms "first portion", "third portion" and "fifth portion" will be apparent from the specification of Patent No. 861,437.
    It will be seen that in each half of the length of the sleeper there are two of the passages spaced apart in the length direction of the sleeper by a distance a little greater than the width of the rail base or flange. Each passage is substantially straight and extends in the width direction of the sleeper and is open at both ends. Each passage is formed between the upper surface Il of the concrete and a portion 12 of a retaining member, which portion 12 forms an arch above the surface
    11. There are four retaining members in all.
    Just beyond each of the four arches, considered from the nearest adjacent arch, there is a further portion 13 which extends parallel to the upper surface of the concrete and in contact with that surface and it is upon this portion 13 that the portion 9 of the clip rests.
    As shown in the specification of Patent No.
    1,213,762, an insulator could electrically insulate the portion 8 of each clip and the adjacent retaining member from the rail flange.
    The present invention concerns a modified form of the retaining member. This is shown in Figures 2 to 5 and it will be seen that it is somewhat U-shaped and thus has first and second legs 21 and 22 extending from opposite ends of an intermediate portion 23 which provides an arch above the surface of the concrete. The portion 23 also provides at the top of the leg 21 an upwardly-facing shoulder 24 and at the top of the leg 22 an upwardly-facing shoulder 25 which is about 2 cm. higher than the shoulder 24 when the U of the retaining member is inverted. as shown in Figure 2, so that the arch is uppermost and the free ends of the legs 21 and 22 are lowermost and about equidistant from a vertical plane which passes through the top of the arch.Each shoulder is on the outside of the retaining member and has a surface which is substantially flat and horizontal or inclined by only a few degrees to the horizontal when the retaining member is in the position shown in Figure 2. The shoulder 25 has a portion 9 of a clip bearing upon it. the portion 7 of the clip lies under the arch 23 and presses upwardly upon it and the shoulder 24 lies flush with the surface 11 of the concrete and projects underneath the rail or very close to the rail. When the concrete sleeper is cast in a mould, the shoulder 24 makes contact with the bottom of the mould and prevents the retaining member from turning in the mould.
    Each leg 21 and 22 has a length several times the maximum thickness of the retaining member and is bifurcated by virtue of a piece having been cut out of it, leaving a recess 26 or 27, the recess 26 in the leg 21 being longer than the recess 27 in the leg 22 and both recesses narrowing, progressing downwardly, so that the two limbs on either side of each recess widen, progressing downwardly (considering Figures 2 to 4).
    Four retaining members like that shown in Figures 2 to 5 can be incorporated in a concrete sleeper and used in an assembly which is otherwise as described above with reference to Figure 1.
    The retaining members are made by a process which includes rolling a long piece of steel to the desired somewhat U-shaped cross-section exactly the same as that shown in Figure 2 or perhaps the same except that the legs 21 and 22 are straight. Then the long piece of steel is cut into shorter pieces by cuts perpendicular to its length and then each shorter piece has its legs 21 and 22 bent (if they were straight after the rolling operation) and pieces cut out of them to form the recesses 26 and 27. Alternatively, it would be possible to cut out the pieces to form the recesses 26 and 27 before cutting the long piece of steel transversely into shorter lengths.
    WHAT WE CLAIM IS:
    1. A retaining member suitable for incorporation in a concrete railway sleeper to provide an arch above the top of the sleeper to receive an upwardly pressing part of a clip for holding down a rail, the retaining member being somewhat U-shaped and thus having first and second legs extending from opposite ends of an intermediate portion which provides said arch and the retaining member having been made by a process including rolling a long piece of metal to the desired somewhat U-shaped cross-section and cutting it transversely to produce a number of shorter somewhat U-shaped parts.
    each of the legs having a length several times the maximum thickness of the retaining member.
    2. A retaining member according to claim I and made by a process in which, before or after the shorter somewhat Ushaped parts are cut from the long piece of metal, one leg or each leg of each of them has a piece cut out of it so that the leg is bifurcated.
    3. A retaining member according to claim I or 2, having a shoulder which faces upwardly when the retaining member is placed in a position with the arch uppermost
    and the free ends of the legs lowermost and about equidistant from a vertical plane which passes through the top of the arch, the shoulder being on the outside of the retaining member at the top of the first leg, said shoulder having been formed during the rolling operation.
    4. A retaining member according to any preceding claim having a shoulder which faces upwardly when the retaining member is placed in a position with the arch uppermost and the free ends of the legs lowermost and about equidistant from a vertical plane which passes through the top of the arch, the shoulder being on the outside of the retaining member at the top of the second leg, said shoulder having been formed during the rolling operation.
    5. A retaining member according to claim 3 or 4 in which the or each shoulder has a surface which is substantially flat and is horizontal or inclined by only a few degrees to the horizontal when the retaining member is in said position.
    6. A retaining member according to claims 3 and 4 or according to claims 3,4 and 5 in which one shoulder is higher than the other,
    7. A retaining member according to claim 6 in which one shoulder is between 1 and 3 cm. higher than the other.
    8. A retaining member suitable for incorporation in a railway sleeper to provide an arch above the top of the sleeper to receive an upwardly pressing part of a clip for holding down a rail, the retaining member being substantially as described above with reference to Figures 2 to 5 of the accompanying drawings.
    9. A concrete railway sleeper having incorporated in it four retaining members according to any preceding claim.
    10. A concrete railway sleeper according to claim 9 and substantially as described above with reference to Figures 2 to 5 of the accompanying drawings.
    11. A railway rail-and-fastening assembly comprising a concrete railway sleeper according to claim 9 or lO, two rails resting crosswise on the sleeper. one between two adjacent ones of the arches and the other between another two adjacent ones of the arches. and four railway rail-fastening clips holding down the rails, each clip having a part which has been driven in a respective one of the arches.
    12 A railway rail-and-fastening assem bly according to claim 11 and substantially as described above with reference to Figures 2 to 5 of the accompanying drawings.
GB512578A 1978-05-31 1978-05-31 Fastening railwy rails to concrete railway sleepers Expired GB1596002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB512578A GB1596002A (en) 1978-05-31 1978-05-31 Fastening railwy rails to concrete railway sleepers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB512578A GB1596002A (en) 1978-05-31 1978-05-31 Fastening railwy rails to concrete railway sleepers

Publications (1)

Publication Number Publication Date
GB1596002A true GB1596002A (en) 1981-08-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB512578A Expired GB1596002A (en) 1978-05-31 1978-05-31 Fastening railwy rails to concrete railway sleepers

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126835A1 (en) * 1983-05-31 1984-12-05 FAGROBEL Société anonyme Element for fastening a rail to a concrete railway sleeper
US6049982A (en) * 1998-05-22 2000-04-18 Tseng; Shao-Chien Integrated molding method for the front fork of a bicycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126835A1 (en) * 1983-05-31 1984-12-05 FAGROBEL Société anonyme Element for fastening a rail to a concrete railway sleeper
US6049982A (en) * 1998-05-22 2000-04-18 Tseng; Shao-Chien Integrated molding method for the front fork of a bicycle

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee