US3888414A - Resiliently yieldable rail fastening - Google Patents

Resiliently yieldable rail fastening Download PDF

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Publication number
US3888414A
US3888414A US466919A US46691974A US3888414A US 3888414 A US3888414 A US 3888414A US 466919 A US466919 A US 466919A US 46691974 A US46691974 A US 46691974A US 3888414 A US3888414 A US 3888414A
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United States
Prior art keywords
fastening
rail
tie
boss
plate
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Expired - Lifetime
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US466919A
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English (en)
Inventor
Michel Duchemin
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Ressorts du Nord SA
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Ressorts du Nord SA
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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
    • E01B9/32—Fastening on steel sleepers with clamp members
    • E01B9/34—Fastening on steel sleepers with clamp members by resilient steel clips
    • 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
    • E01B9/306—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped plate

Definitions

  • ABSTRACT A fastening device for fastening to a railway tie a rail comprising at least one resiliently yieldable fastening plate bearing on the flange of the rail and on the tie,
  • the plate is provided with an aperture for the passage of plate'tightening means and has in its centre part, in the region of the aperture, a thickening defining a curved boss for bearing against the tightening means in a contact point located between a region in which the fastening bears against the tie and a region in which the fastening bears against the flange of the rail.
  • the plate is thinned down progressively from the boss in the direction of each of the ends of the plate. The fastening pivots around the contact point as the rail vertically moves.
  • the thickness of the plate however is constant adjacent its ends which form two thin very flexible feet.
  • a boss may also be provided on the lower face of the plate.
  • the fastening must oppose the tipping of the rail under the action of lateral forces exerted on its head, that is to say, the fastening must be strong enough to preclude any raising of the flange of the rail.
  • rails are generally fastened by means of fastenings in the form of spring plates or strips which bear, at one end, on the flange of the rail and, at the other end, on the support and are provided with an aperture for the passage of fastening-tightening means.
  • fastenings in the form of spring plates or strips which bear, at one end, on the flange of the rail and, at the other end, on the support and are provided with an aperture for the passage of fastening-tightening means.
  • An object of the present invention is to provide an extremely flexible and strong rail fastening device whereby it is possible to maintain a rail even when it is mounted on a very flexible pad.
  • a fastening device comprising at least one resiliently yield able fastening plate bearing on the flange of the rail on the sleeper and provided with an aperture for the passage of tightening means, the fastening comprising in its centre part in the region of the aperture a thickening constituting a curved boss for bearing against the tightening means at a point located between a bearing point or points between the fastening and the sleeper and a bearing point or points between the fastening and the rail flange, the fastening being progressively thinned down from the boss in a direction toward each of its ends.
  • the plate terminates at each end beyond the thinned down part in a thin foot which has a substantially constant thickness.
  • the fastening is pivotable about its point of contact with the tightening means.
  • the elastically yieldable pad supporting the rail is depressed, it is completely relieved and contributes in its entirety at the maintenance of the rail.
  • the thinning down of the two parts of the fastening imparts to the branch bearing on the sleeper the same flexibility as the branch bearing on the rail, so that the fastening may have maximum flexibility.
  • the plate abuts against the head of the tightening means not only through its thickest part but also through the neighbouring portions lo cated between the boss and the flange of the rail. so that the rail is held completely stationary against any lateral tipping.
  • FIG. I is a longitudinal sectional view of a fastening according to the invention.
  • FIG. 2 is a plan view of the fastening shown in FIG. 1;
  • FIG. 3 is a sectional view of a rail fastening device employing the fastening shown in FIG. I;
  • FIG. 4 is a sectional view of a modification of the device shown in FIG. 3;
  • FIGS. 5 and 6 are sectional views of two other modi fications of the rail fastening device according to the invention.
  • FIG. 7 is a side elevational view of a modification of the fastening.
  • FIG. 8 is a plan view of the fastening shown in FIG. 7.
  • the fastening shown in FIG. 1 comprises a resiliently yieldable metal strip or plate I provided with a centre aperture 2 for the passage of fastening-tightening means.
  • This plate has in the region of the aperture 2 a thickening which forms a boss 4 on one of the faces of the plate. On each side of this boss, the thickness of the plate decreases progressively in the direction of each of its ends. However, this reduction in thickness stops preferably at 6 and 8 at a distance from said ends so that the plate I terminates in two thin very flexible feet 10, I2 of substantially constant thickness so that the fastening has on each side of the boss 4 two branches ll, 13 which are thinned down in a similar manner.
  • the surface 14 of the plate 1 opposite the boss 4 is preferably planar.
  • This surface 14 is rectangular in the embodiment shown in FIG. 2, the feet I0 and I2 having the same width as the centre part of the plate. But the plate may have any other preferred shape, the feet It) and 12 being either wider or narrower than the rest of the plate.
  • the plate I bears at one end against the flange 16 of a rail [8 whereas at the other end it is in contact. through the foot 12. with the sleeper or tie T which supports this rail.
  • a coach-screw 20 extends through the aperture 2 and is screwed in the sleeper T.
  • a head 22 of this coach-screw exerts a force on the upper surface of the plate I in the region of the boss 4 and applies the fas tening against the flange 16 of the rail as shown in FIG. 3 in constraining it to flex and bend.
  • the c ..ach-screw 20 is sufficiently near to the flange 16 to alow its head 22 to extend slightly over the flange so that the tightening down of the fastening plate is limited by the contact of the plate 1 with the edge 17 of this flange.
  • the foot 10 of the fastening is clamped or tightened against the flange I6 and is in full contact therewith with a uniformly-distributed pressure.
  • the head 22 bears, as shown in the drawing, not only on the top of the boss 4 but also on the neigh bouring part of the plate I, that is to say, on the thickest part of the branch 11. Thus no raising of the rail I8 is possible.
  • a space 24 remains free between the head 22 and the branch 13 and the foot 12 is in full contact with and exerts a uniformly-distributed pressure on the sleeper.
  • the rail 18 is mounted on the sleeper T with interposition ofa pad 25 composed of a very flexible elastically yieldable material. Consequently, when a train passes over the rail and its weight compresses the pad 25 and moves the flange l6 nearer to the sleeper T, the branch II of the plate I is untightened and leaves its support under the head 22 and only the top of the boss 4 remains in contact with the head. There results a reliev ing of said plate I and a pivoting of the fastening about this single point of contact with the head 22. The thickening of the boss 4 promotes this pivoting and performs the function of an articulation or pivot so that the whole of the plate that is to say. both branch 13 and branch 11 participates in the flexibility. only the foot 12 remaining rigid. The force exerted by the tightening means remains applied at its point of contact with the plate and the reaction on the rail and on the sleeper are respectively localized in the regions of the feet and 12.
  • a fastening which has very high resilience with great strength.
  • a fastening of maximum flexibility which is that in which each section has a modulus of inertia proportional to the bending moment applied thereto. can be easily constructed. the increase in the thickness in the vicinity of the aperture 2 compensating for the reduction in the useful width.
  • circular aperture 2 shown in FIG. 2 may be replaced. in order to facilitate the assembly. by a longitudinal notch without modifying in a marked manner the strength of the assembly. It is sufficient to conserve the same shape for the upper face of the branch 13 which extends over the sleeper.
  • the lower surface 14 of the plate 1 also with a boss constituted in the same way as the boss 4 by a local thickening of the plate in the opposite direection.
  • the second boss constitutes a bearing point on the sleeper T and defines a free space between this bearing point and the foot 12 in contct with the sleeper.
  • This lower boss is preferably exactly opposite the boss 4 and, in the same way as the latter, coaxialwith the aperture 2.
  • this second boss may be. in the same way as the upper boss. laterally offset from the aperture 2.
  • FIG. 4 shows an embodiment of this type.
  • the fastening is constituted by a plate or strip 3i which has, in the same way as the plate 1, a boss 26 on its upper face in the region of the aperture 32 for the passage of the tightening means 30, but this boss is not centred on this aperture but laterally offset onto the branch 27 of the fastening adapted to bear on the flange 16 of the rail.
  • the plate 31 further comprises on its lower face a second boss 28 which is also laterally offset from the aperture 32 for the passage of the tightening means but in the direction of the opposite end, that is to say. on the branch 29 which is adapted to come in contact with the sleeper.
  • the rail 18 is disposed in a recess 34 in the sleeper T of concrete. bears against a pad 35 and is blocked or retained laterally by means of blocks 36 which are preferably of an electrically insulating material and fill the recess 34 on each side of the rail 18 and extends along the upper part of the corresponding flange 16.
  • the branch 27 of the plate is tightened against this insulating block 36 by means of a nut 38 screwed on the bolt 30.
  • the nut 38 is in contact with the boss 26 and with the neighbouring portion of plate 31.
  • a space 40 remains empty on the other side of the bolt between the latter and the part of the plate 31 which is located directly above the boss 28.
  • the plate 31 pivots about the point of Contact of the boss 26 with the nut 38 which raises the boss 28 off the sleeper and enables the whole of the plate to participate in the resilience of the fastening.
  • the whole of the plate located between the boss 28 and the flange l6 constitutes a relatively thick means which is sufficiently rigid 4 to strongly maintain the rain against any lateral tipping notwithstanding the fact that the nut 38 does not extend over the flange 16.
  • the fastening plate provided with a thickening at its 5 centre part may also be employed for other types of sleepers or ties.
  • it may b rnounted on metal sleepers provided with lateral abutments or stops on each side of the position of the rail. such as those shown in FIGS. 5 and 6. in this case.
  • the fastening 41 extends over the abutment and the tightening bolt 42 extends in succession through the aperture in the plate and an aperture in the abutment 48.
  • the fastening 41 is therefore not only thinned down but also curved in such manner as to allow the foot 46 at the end of the branch 45 to come in contact with the sleeper.
  • This fastening comprises an upper boss 50 in contact with the tightening bolt and preferably a lower 52 on the op posite side of the plate and in contact with the abutment 48.
  • a lateral packing block 54 constituting an electrically insulating cladding is interposed between the flange 16 of the rail, the abutment 48 and the branch 43 of the fastening 44.
  • This branch 43 is tightened against the flange l6 and is in contact with the latter in the region of the foot 44 and in the region of the edge 17 of this flange.
  • the fastening pivots with respect to the tightening means 42 in the same way as the fastenings l and 31 when the pad is compressed.
  • the lateral abutment 48 may be a projecting portion integral with the sleeper or constituted by an independent member 58 which extends through an aperture 56 in the sleeper as shown in FIG. 6.
  • the abutment 58 is then hollow and maintained in position, together with the fastening 41, by the tightening means 42.
  • a fastening 60 may comprise a lower plate or strip 62 of constant thickness and adapted to bear against the sleeper adjacent one end of the strip 62 and against the flange of the rail adjacent the other end, this lower plate being associated with a second plate or strip 64 whose thickness varies and is maximum in the centre part at 65.
  • the two plates are'provided in this centre part with an aperture 66 for the passage of tightening means.
  • the thickness of the second plate 64 decreases progressively from the aperture 66 to its ends.
  • the plate 64 is less than that of the plate 62 and the ends of the latter form on each side of the plate 64 two thin feet of constant thickness.
  • the width of the plate 64 may be the same as that of the plate 62 or less and decrease progressively at the same time as the thickness decreases in the direction of each of the ends of the fastening.
  • the fastening may have a plurality of plates or strips whose thicknesses. and possibly widths. are variable. Such an assembly of superimposed plates constitutes. in the same way as a single plate. a very strong fastening which is nonetheless highly flexible.
  • the thickness and the width of the plates are so chosen that each section has a modulus of inertia which is proportional to the bending moment applied thereto so as to achieve maximum flexibility.
  • a fastening device for fastening to a railway tie a rail which has a flange and is supported by the tie through an elastically yieldable pad comprising a fastening comprising at least one resiliently yieldable plate bearing, in a first branch adjacent one end of the fastening at at least one point of the fastening, against the tie and, in a second branch adjacent an opposite end of the fastening at at least one point of the fastening, against the flange of the rail, means defining in the plate an aperture, between the two branches, the fastening having a thickening in a centre part of the fastening in the region of the aperture constituting a curved boss, the fastening progressively thinning down from the boss in directions toward said ends of the fastening", and tightening means for tightening down the fastening onto the rail flange extending through the aperture and connected to the tie, the tightening means being pivotally engaged with the upper face of the boss at a contact point located between a region in which the
  • a fastening device as claimed in claim 1 having a constant thickness in the vicinity of each of said ends so as to constitute a foot adjacent each end, its thickness decreasing between said boss and said feet.
  • a fastening device as claimed in claim 1, comprising a plurality of superimposed plates of which at least the uppermost plate has a thickening in its centre part.
  • a fastening device as claimed in claim 3, comprising at least one plate of constant thickness and a plate of variable thickness.
  • a fastening device for fastening to a railway tie a rail which has a flange and is supported by the tie through an elastically yieldable pad comprising: a fastening comprising at least one resiliently yieldable plate bearing, in a first branch adjacent one end of the fastening at at least one point of the fastening, against the tie and, in a second branch adjacent an opposite end of the fastening at at least one point of the fastening, against the flange of the rail, means defining in the plate an aperture between the two branches, the fastening having a thickening in a centre part of the fastening in the region of the aperture constituting a curved first boss, the fastening progressively thinning down from said first boss in directions toward said ends of the fastening; and tightening means for tightening down the fastening onto the rail flange extending through the aperture and connected to the tie, the tightening means being pivotally engaged with the upper face of said first boss at a contact point located between a region in which
  • a device for fastening to a railway tie a rail which has a flange and is supported by the tie through an elastically yieldable pad comprising: a fastening comprising at least one resiliently yieldable plate bearing. in a first branch adjacent one end of the fastening at at least one point of the fastening, against the tie and, in a second branch adjacent an opposite end of the fastening at at least one point of the fastening, against the flange of the rail, means defining in the plate an aperture.
  • the fastening having a thickening in a centre part of the fastening in the region of the aperture constituting a curved boss, the fastening progressively thinning down from the boss in directions toward said ends of the fastening; and tightening means for tightening down the fastening onto the rail flange extending through the aperture and connected to the tie, the tightening means being in contact with the boss and with a portion of the second branch of the fastening, there being defined between the tightening means and the first branch of the fastening a free space, the end of the fastening corresponding to said first branch being flat on the tie.
  • the boss bearing against the tightening means at a contact point located between a region in which the fastening bears against the tie and a region in which the fastening bears against the flange of the rail.
  • a device as claimed in claim 9, comprising an abutment for limiting the lateral displacement of the rail relative to the tie and integral with the tie and located between the rail and the tightening means, and a lateral electrically-insulating rail-blocking packing block interposed between a side of the rail and said abutment and covering an upper part of the flange of the rail, the second branch of the fastening bearing on said block.
  • a device as claimed in claim 10, wherein the abutment comprises an attached member which is fixed to the tie by the tightening means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
US466919A 1973-05-03 1974-05-03 Resiliently yieldable rail fastening Expired - Lifetime US3888414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7315918A FR2228134B1 (de) 1973-05-03 1973-05-03

Publications (1)

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US3888414A true US3888414A (en) 1975-06-10

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US466919A Expired - Lifetime US3888414A (en) 1973-05-03 1974-05-03 Resiliently yieldable rail fastening

Country Status (16)

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US (1) US3888414A (de)
JP (1) JPS5069704A (de)
AT (1) AT331834B (de)
BE (1) BE814358A (de)
BR (1) BR7403621D0 (de)
CA (1) CA1007216A (de)
DE (1) DE2421553A1 (de)
DK (1) DK143353C (de)
ES (1) ES425931A1 (de)
FR (1) FR2228134B1 (de)
GB (1) GB1471023A (de)
IT (1) IT1014091B (de)
LU (1) LU69960A1 (de)
NL (1) NL7405893A (de)
OA (1) OA04660A (de)
ZA (1) ZA742778B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088267A (en) * 1975-11-26 1978-05-09 Ressorts Du Nord S.A. Elastically yieldable rail fastener and rail fixing device including said fastener
US4109860A (en) * 1975-03-26 1978-08-29 Societe Anonyme De Traverses En Beton Arme - Systeme Vagneux Rail spring clip with tension limiting feature
US4373667A (en) * 1979-10-02 1983-02-15 Ressorts Industrie Devices for elastically fastening rail-way rails by locking
US4754921A (en) * 1986-12-24 1988-07-05 Utility Vault Co., Inc. Cushioned railroad truck roadway crossing module
US5485955A (en) * 1994-07-11 1996-01-23 Kerr-Mcgee Chemical Corporation Rail-tie fastening assembly for concrete tie
GB2394497A (en) * 2002-10-22 2004-04-28 Pandrol Ltd Rail clip anchoring device and method of attaching it to a railway rail support
US20060060662A1 (en) * 2002-10-22 2006-03-23 Geissele William H Method of attaching rail clip anchoring device to a railway rail support
CN102529750A (zh) * 2012-02-03 2012-07-04 天津二十冶建设有限公司 电动平车地面供电滑触线绝缘结构及其施工工艺
US20190211512A1 (en) * 2018-01-10 2019-07-11 Voestalpine Nortrak Inc. Keyway tie

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU175713B (hu) * 1978-12-13 1980-10-28 Budapesti Mueszaki Egyetem Prishivanie rel'sa
JPS61117305A (ja) * 1984-11-12 1986-06-04 東急建設株式会社 リアクションプレ−トの取り付け方法
GB2185281B (en) * 1986-01-11 1989-10-25 Serni Ltd Improvements relating to rail sleepers with rail securing devices
JP4897348B2 (ja) * 2006-05-09 2012-03-14 株式会社関ヶ原製作所 レール位置決め装置及びそれに用いるタイプレート

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203994A (en) * 1939-06-29 1940-06-11 Gerald M Magee Spring clip rail fastener
US2526005A (en) * 1947-02-17 1950-10-17 Glen F Carpenter Rail stabilizer
US3688984A (en) * 1970-02-16 1972-09-05 Ferroviaires Soc Elastically yieldable insulating rail fastening device
US3784098A (en) * 1971-07-30 1974-01-08 Traverses En Beton Arme Syst V Rail fastening

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203994A (en) * 1939-06-29 1940-06-11 Gerald M Magee Spring clip rail fastener
US2526005A (en) * 1947-02-17 1950-10-17 Glen F Carpenter Rail stabilizer
US3688984A (en) * 1970-02-16 1972-09-05 Ferroviaires Soc Elastically yieldable insulating rail fastening device
US3784098A (en) * 1971-07-30 1974-01-08 Traverses En Beton Arme Syst V Rail fastening

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109860A (en) * 1975-03-26 1978-08-29 Societe Anonyme De Traverses En Beton Arme - Systeme Vagneux Rail spring clip with tension limiting feature
US4088267A (en) * 1975-11-26 1978-05-09 Ressorts Du Nord S.A. Elastically yieldable rail fastener and rail fixing device including said fastener
US4373667A (en) * 1979-10-02 1983-02-15 Ressorts Industrie Devices for elastically fastening rail-way rails by locking
US4754921A (en) * 1986-12-24 1988-07-05 Utility Vault Co., Inc. Cushioned railroad truck roadway crossing module
US5485955A (en) * 1994-07-11 1996-01-23 Kerr-Mcgee Chemical Corporation Rail-tie fastening assembly for concrete tie
US5494212A (en) * 1994-07-11 1996-02-27 Kerr-Mcghee Chemical Corporation Rail-tie fastening method for concrete tie
GB2394497A (en) * 2002-10-22 2004-04-28 Pandrol Ltd Rail clip anchoring device and method of attaching it to a railway rail support
GB2394497B (en) * 2002-10-22 2005-08-24 Pandrol Ltd Method of attaching rail clip anchoring device to a railway rail support
US20060060662A1 (en) * 2002-10-22 2006-03-23 Geissele William H Method of attaching rail clip anchoring device to a railway rail support
CN102529750A (zh) * 2012-02-03 2012-07-04 天津二十冶建设有限公司 电动平车地面供电滑触线绝缘结构及其施工工艺
US20190211512A1 (en) * 2018-01-10 2019-07-11 Voestalpine Nortrak Inc. Keyway tie
US10711406B2 (en) * 2018-01-10 2020-07-14 Voestalpine Nortrak Inc. Keyway tie

Also Published As

Publication number Publication date
AT331834B (de) 1976-08-25
JPS5069704A (de) 1975-06-10
CA1007216A (en) 1977-03-22
ZA742778B (en) 1975-04-30
AU6859674A (en) 1975-11-06
LU69960A1 (de) 1974-08-06
GB1471023A (en) 1977-04-21
IT1014091B (it) 1977-04-20
OA04660A (fr) 1980-07-31
DK143353B (da) 1981-08-10
ATA364674A (de) 1975-12-15
BE814358A (fr) 1974-10-29
NL7405893A (de) 1974-11-05
DK143353C (da) 1981-12-07
FR2228134B1 (de) 1980-04-11
FR2228134A1 (de) 1974-11-29
BR7403621D0 (pt) 1974-12-24
DE2421553A1 (de) 1974-11-21
ES425931A1 (es) 1976-07-01

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