US3558050A - Rail support device - Google Patents

Rail support device Download PDF

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Publication number
US3558050A
US3558050A US768689A US3558050DA US3558050A US 3558050 A US3558050 A US 3558050A US 768689 A US768689 A US 768689A US 3558050D A US3558050D A US 3558050DA US 3558050 A US3558050 A US 3558050A
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Prior art keywords
head
bolt
strip
tie
passageway
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Expired - Lifetime
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US768689A
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English (en)
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Roger Paul Sonneville
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Individual
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Individual
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    • 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
    • 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
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/12—Retaining or locking devices for spikes or screws

Definitions

  • a coach-screw screwed in the wood is a conventional means for fastening the rail to the railway sleeper.
  • the coach-screw lacks elasticity and to maintain the rail firmly integral with the sleeper, frequent tightening is necessary.
  • the conventional coach-screw has another funda mental drawback, namely the pitch of its screw thread is usually large, for example on the order of l2 mm.
  • This feature of the coach-screw makes it very difficult to achieve a precise and carefully adjusted clamping, since a small rotation of the coach-screw results in a relatively large downward movement of its head.
  • it is practically impossible to stop the screwing just when the head of the coachscrew-the fastening strip if one is provided--touches the edge of the rail flange.
  • any excess clamping deteriorates the wood against which the threads of the coachscrew bear and there can occur a loss of elasticity of the fastener which thus accelerates the aging and loosening of the fastening device.
  • the object of the invention is to provide a support device for a railway track rail comprising in combination a sleeper and a fastener having a bolt and a nut, wherein the sleeper comprises a roughly vertical passageway for receiving the head and a part of the shank of the bolt and a roughly horizontal passageway which intersects the said vertical passageway, an elastically yieldable metal strip being interposed between the head of said bolt and the upper face of said horizontal passageway, said strip bearing on said upper face when said nut is tightened on said bolt.
  • the horizontal passageway roughly parallel to the rail and in the vicinity of the middle of the vertical dimension of the sleeper, that is, in the strongest region of a wooden sleeper.
  • the regulation or adjustment of the clamping force is much more precise than in the case of a coach-screw since the pitch of the bolt can be chosen to be about one-fifth of that of a coach-screw.
  • FIG. I is a partial cross-sectional view of a track having a rail support device according to the invention, which is shown in its clamped-down position;
  • FIG. 2 is a sectional view of the device, taken along line 2-2 of FIG. I, before it is clamped down, and
  • FIG. 3 is a sectional view of this device taken along line 3-3 of FIG. 2.
  • An improved rail support device R according to the invention is shown in the drawing, this device mainly comprising a sleeper or tie T, a fastener comprising a bolt B and a nut E and a fastening member C.
  • a sole element S is interposed in the known manner between the rail and the sleeper and the fastening member bears on the flange of the rail and on a pad c, which is for example of elastomer.
  • a passageway I having a roughly vertical axis X-X and, in the presently-described embodiment, a circular section, and a horizontal passageway 2 having a rectangular section.
  • the diameter of the vertical passageway is slightly greater than the diagonal of the head tof the bolt B which must be inserted in this passageway.
  • the horizontal passageway 2 is blind (see FIG. 2) and extends from one of the lateral faces of the sleeper in a direction parallel to the rail R. It is provided at a level slightly lower than midway up the height of the sleeper, that is, in the vicinity of the neutral axis of the cross section of the sleeper and, in the case of a sleeper of wood, in the strongest part.
  • This horizontal passageway has a width I greater than the diameter d of the vertical passageway 1 (FIG. I). It intersects the latter and terminates in an end wall 2a located at a distance from the axis X-X which is such that the correct positioning of a strip 3 is achieved, as will be explained in more detail hereinafter (FIG. 2).
  • the vertical passageway extends downwardly to a level lower than the lower face of the passageway 2 so as to form a cavity 4 whose depth is slightly greater than the axial extent of the head 1 of the bolt B.
  • This bolt is preferably a bolt having a hammer head, such as that described in the French Pat. application No. 40,225 filed on Nov. 30, I965 by the Applicant, and including a forehead portion whose shape can be seen in FIG. 3 and which locks the bolt when clamping.
  • This strip of spring steel is curved and has its concavity facing upwardly. It has an oblong aperture 5 whose major dimension is in the direction of the length of the strip. The dimensions of this aperture are slightly greater than those of the head t'of the bolt B so as to allow placing the latter in position.
  • the strip 3 has a length between one-half of the width of the sleeper and its effective width L (FIG. 2) and a width which is slightly less than the width 1 of the horizontal passageway and less than one-half the length of the strip so as to utilize in the best possible manner the weight of the spring steel.
  • the strip 3 can have a length of about 15 cm, and a width of about 5-6 cm, the width 1 of the passageway 2 being 6 cm.
  • the fastener is mounted in the device according to the invention in the following manner.
  • the strip 3 is introduced into the passageway 2 through the lateral entrance of the latter until the center of the aperture 5 is roughly in alignment with the axis of the vertical passageway I. This is advantageously carried out in the workshop when the sleeper is machined and the apertures are drilled.
  • the strip 3 is held stationary, for example by rails driven vertically in the upper or lower face of the sleeper in the region of the ends of the strip.
  • the bolt B When laying the track, and preferably after the rail has been placed in position, the bolt B is introduced downwardly into the vertical passageway l.
  • the hammer head 1 passes through the aperture (FIG. 2) and at this moment a rotation of 90 of the bolt anchors the head I under the strip 3 and the forehead a abuts the longitudinal walls of the aperture 5.
  • the fastening member C and the nut E are then placed in position by hand.
  • the initial curvature of the strip 2, its initial camber (FIG. 2) and its thin thickness are so calculated and arranged that when the head I of the bolt B exerts the force required for correctly clamping down the fastening member C, namely usually between 1,200 and L500 kg., the strip L is perfectly plane and exerts on upper face of the passageway 2 a pressure which is as uniform as possible without reaching the elastic limit of the treated spring steel of the strip 3.
  • the tensile force exerted upwardly by the bolt fixing the rail is transmitted to the sleeper through the strip 3 in the form of an almost uniform very low pressure, since it is distributed over a large area.
  • a tensile force of 1,500 kg. on the bolt therefore results a pressure of the order of kg./sq. cm. exerted by the strip on the wood in the soundest and hardest part thereof.
  • This pressure is not only considerably less than that exerted by the screw threads of a coach-screw subjected to the same tensile fore force but also very greatly less than the pressure which results in a plastic deformation of the wood. In this way, a stable anchoring is achieved with certainty throughout the useful life of the wooden sleeper.
  • the device according to the invention can be moreover adjusted at any moment; the retightening of the bolt to compensate possible slackenings having no destructive effect on the wood of the sleeper as in the case of the coach-screw.
  • the anchoring device according to the invention is associated, as in the foregoing description, with the aforementioned fastening member and if the elastically yieldable strip 3 is given characteristics close to those of this fastening member, an effective amplitude of elasticity is imparted to the assembly which is close to double that presently obtained with the same fastening member clamped down by a simple coachscrew.
  • the device according to the invention is therefore much less sensitive than the known device to irregularities in the clamping when laying the track and to the effects of slackening due to aging and wear.
  • the effective life of the sleeper and its fastening means is consequently markedly prolonged with a reduction in and a simplification of the maintenance operations which largely compensates the slightly higher price of the fastener according to the invention.
  • a railway track rail support device comprising in combination a tie and rail fastening means including a nut, a bolt having an oblong head and a shank, and a fastener located around said bolt and between said nut and the upper faces of the tie and of the adjacent flange of the rail, said tie having a substantially vertical passageway for receiving said head and a part of said shank and a substantially horizontal passageway which has an upper face and intersects the said vertical passageway, an elastically yieldable metal strip interposed between said head and said upper face of the horizontal passageway, said strip having in its center part an oblong opening whose length is slightly greater than the length of said head of said bolt and whose width is slightly greater than the width of said head but less than the length of said head, said metal strip being curved, when said fastening means is not yet tightened down, and having a concave face directed toward said upper face of the horizontal passageway, said metal strip bearing throughout its surface on said upper face when said nut is tightened on said bolt.
  • a railway track rail support device comprising in combination a tie and rail fastening means including a nut, and a bolt having a head and a shank, said tie having a substantially vertical passageway for receiving said head and a part of said shank and communicating only with horizontal surfaces of said tie, and a substantially horizontal passage communicating only with vertical surfaces of said tie and having an upper face at an intersection with said vertical passageway, an elastically yieldable metal strip interposed betweensaid head and said upper face and bearing on said upper face when said nut is tightened on said bolt, said metal strip having an opening therein, and means for passing the head of the bolt through said opening in a downward direction and for securing said bolt against subsequent removal upwardly through said open-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Bridges Or Land Bridges (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US768689A 1967-10-31 1968-10-18 Rail support device Expired - Lifetime US3558050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR126493 1967-10-31

Publications (1)

Publication Number Publication Date
US3558050A true US3558050A (en) 1971-01-26

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ID=8641027

Family Applications (1)

Application Number Title Priority Date Filing Date
US768689A Expired - Lifetime US3558050A (en) 1967-10-31 1968-10-18 Rail support device

Country Status (6)

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US (1) US3558050A (de)
BE (1) BE720924A (de)
DE (1) DE1806424A1 (de)
ES (1) ES358901A1 (de)
FR (1) FR1550287A (de)
SE (1) SE343352B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4090665A (en) * 1976-11-16 1978-05-23 The Raymond Lee Organization, Inc. Reinforced concrete tie with embedded rail clamp means
US4190200A (en) * 1978-03-17 1980-02-26 Scotco, Inc. Rail clip assembly
US6450415B1 (en) * 1999-09-03 2002-09-17 Halfen Gmbh & Co. Kg Arresting device for support

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847344A (en) * 1971-04-19 1974-11-12 Mc Donnell Douglas Corp Track fastener
CH672009A5 (de) * 1986-10-24 1989-10-13 Schrepfer Rudolf Ag

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1220443A (en) * 1916-08-16 1917-03-27 Jacob H Miller Rail tie and fastener.
US2132571A (en) * 1931-07-27 1938-10-11 Maney Thomas Tie-plate construction
US2479932A (en) * 1945-08-13 1949-08-23 G & H Rail Controls Inc Rail anticreep device
US2656115A (en) * 1949-04-01 1953-10-20 Sonneville Roger Railway sleeper of reinforced concrete with rail fastening bolts
FR1110506A (fr) * 1954-09-08 1956-02-14 Perfectionnements apportés aux moyens pour fixer les rails de chemin de fer sur leurs traverses
US3039695A (en) * 1959-03-16 1962-06-19 John L Harmsen Reinforced concrete railway tie
US3147921A (en) * 1961-01-20 1964-09-08 Frankignoul Pieux Armes Device for fastening a rail to a concrete railway sleeper
US3362639A (en) * 1965-10-22 1968-01-09 Poor & Co Rail fastener assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1220443A (en) * 1916-08-16 1917-03-27 Jacob H Miller Rail tie and fastener.
US2132571A (en) * 1931-07-27 1938-10-11 Maney Thomas Tie-plate construction
US2479932A (en) * 1945-08-13 1949-08-23 G & H Rail Controls Inc Rail anticreep device
US2656115A (en) * 1949-04-01 1953-10-20 Sonneville Roger Railway sleeper of reinforced concrete with rail fastening bolts
FR1110506A (fr) * 1954-09-08 1956-02-14 Perfectionnements apportés aux moyens pour fixer les rails de chemin de fer sur leurs traverses
US3039695A (en) * 1959-03-16 1962-06-19 John L Harmsen Reinforced concrete railway tie
US3147921A (en) * 1961-01-20 1964-09-08 Frankignoul Pieux Armes Device for fastening a rail to a concrete railway sleeper
US3362639A (en) * 1965-10-22 1968-01-09 Poor & Co Rail fastener assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4090665A (en) * 1976-11-16 1978-05-23 The Raymond Lee Organization, Inc. Reinforced concrete tie with embedded rail clamp means
US4190200A (en) * 1978-03-17 1980-02-26 Scotco, Inc. Rail clip assembly
US6450415B1 (en) * 1999-09-03 2002-09-17 Halfen Gmbh & Co. Kg Arresting device for support

Also Published As

Publication number Publication date
FR1550287A (de) 1968-12-20
SE343352B (de) 1972-03-06
DE1806424A1 (de) 1970-01-15
BE720924A (de) 1969-03-03
ES358901A1 (es) 1970-06-01

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