US3381892A - Rail joint construction - Google Patents

Rail joint construction Download PDF

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Publication number
US3381892A
US3381892A US446557A US44655765A US3381892A US 3381892 A US3381892 A US 3381892A US 446557 A US446557 A US 446557A US 44655765 A US44655765 A US 44655765A US 3381892 A US3381892 A US 3381892A
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US
United States
Prior art keywords
rail
rails
fishplate
fishplates
paste
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
US446557A
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English (en)
Inventor
Jacob A Eisses
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.)
Goldschmidt ETB GmbH
Original Assignee
Elektro Thermit GmbH
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 Elektro Thermit GmbH filed Critical Elektro Thermit GmbH
Application granted granted Critical
Publication of US3381892A publication Critical patent/US3381892A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E01B11/00—Rail joints
    • E01B11/54—Electrically-insulating rail joints

Definitions

  • An insulating rail joint for two end-to-end abutting rails includes a metallic fishplate arranged on respective sides of the rails between the rail head and the rail foot and they are clamped to the rails by tension bolts which extend completely through the web of the rails and each fishplate.
  • the joint may be easily made by applying a cold-hardening paste of insulating material to the web of the rail and the underlying part of the rail head and the overlying part of the foot of the rails.
  • the fishplates include grooves which extend completely along the tops, sides and bottoms thereof in a continuous or endless path.
  • a resilient rod of a material such as plastic is disposed in the groove of each fishplate at a location to bear upwardly against the rail head at the tops of the fishplates and outwardly against the rail foot at the bottoms of the fishplates, and a complete endless rod is pressed against the rail on both tops, bottoms and sides in order to form a seal to seal the paste Within the fishplate area.
  • This invention relates in general to rail joint and to a method of forming such rail joint, and in particular to a new and useful rail joint including a fishplate spanning the joint of the two rails to be joined and extending between the rail head and the lower rail flange or boot and being spaced from the rail surface by an insulator material, with a rod of a material such as a plastic disposed between the fish plate and the rail and compressed therebetween under the tensioning of securing bolts which extend through the fishplate and the rail.
  • the invention relates to an insulating rail joint using metallic fishplates which are advantageously provided on both sides of the rails to be connected and which are clamped by tensioning bolts to the rails.
  • an insulating layer which comprises preferably a cold-hardening paste.
  • a principal advantage of the invention is that the joint made in accordance with the method of the invention provides a rail connection which permits use of the rails prior to the hardening of the paste. A train can be permitted to travel over the rail before the paste is hardened. The tensioning of the bolts against the fishplates does not exert an impermissible large wedging action on the head and the foot of the rails.
  • a rod of synthetic material which extends at least over a portion of the longitudinal length of the respective fishplate.
  • the rods are advantageously made of nylon or other synthetic plastic material.
  • the fishplates are grooved to provide for ice engagement with the rods and the rod material is caused to flow or yield and be compressed under the tensioning of the bolts.
  • the construction is such that the insulating layer comprising the hardenable paste is bounded by the synthetic rods.
  • a cold-hardening paste may be employed. Due to the flowability or yieldability of the rods any tolerance differences between the fish plate and the rails are compensated. The size and the form of the cross section of the synthetic rods are adapted to the load conditions which occur during use of the rail and also to the profile of the rail structure.
  • the fishplates may be provided with a groove which extends along the longitudinal and transverse edges thereof and which is uninerrupted. In this manner an endless rod can be formed from a single profile length and inserted into the continuous groove. With this embodiment, the insulating layer would be'bounded on all sides.
  • the rods are inserted in position in the grooves of the fishplate and either the rails or the fishplate are covered with the h-ardenable paste at the area to be connected.
  • the rods are advantageously positioned in the grooves of the fish plate and may be imparted with a certain flattening by subjecting them to a loading at the areas where the rods will be brought into contact with the rails. Thereafter the bolts are inserted and additional hardenable paste material positioned therearound and the bolts are then tensioned or tightened to hold the two fish plates to the central rail structure.
  • a further object of the invention is to provide a method of forming a rail joint which comprises coating the rail and a fishplate or both with a coating of a hardenable paste at the areas to be jointed together, positioning a rod of synthetic material around the fishplate at a location to contact the rail, installing the connecting bolts between the rail and through the fishplate and tightening the bolts to cause a flattening of the rod against the rail.
  • a further object of the invention is to provide a joint construction for a rail in which fishplates are arranged to span the connecting rails between the head and the foot thereof with the fishplates having a groove containing a rod element which is adapted to bear against the respective head and foot of the rails and with a hardenable paste material disposed between the fishplates and the rails, the fishplates advantageously being forced against the rails by tensioning bolts extending through the rails on the fishplates to cause a flattening of the rods.
  • a further object of the invention is to provide a rail joint construction which is simple in design, rugged in construction and economical to manufacture.
  • FIG. 1 is a fragmentary side elevation of a joint interconnecting two rail structures in accordance with the invention
  • FIG. 2 is a section taken on the line II--II of FIG. 1;
  • FIG. 3 is a view similar to FIG. 1 of another embodiment of the invention.
  • FIG. 4 is a section taken along the lV--IV of FIG. 3.
  • FIGS. 1 and 2 the invention embodied therein in FIGS. 1 and 2 comprises the two rail ends 1 and 2 which are connected with each other by means of fishplates 3 and 4 and a tensioning bolt 5 having nuts 5a threaded onto each end thereof.
  • an insulating layer 6 which advantageously comprises a cold-hardening paste.
  • This paste may be applied, for example, by coating it onto the fishplate or the rail structure or both. It is preferable that the material also be applied over the bolts 5 so as to extend completely between the bolts and the associated fishplate.
  • Grooves 7 and 8 are defined in the fishplates 3 and 4, preferably adjacent their upper edges in a position facing toward a corresponding head portion or foot portion of the rails.
  • rods 9 and 10 of synthetic material such as nylon are disposed in the respective grooves 7 and 8 and they extend outwardly therefrom into abutting engagement with the head and foot portions, respectively, of the rails 1 and 2.
  • the force advantageously causes the rods 9 and 10 to become flattened against the portion of the rail which they abut.
  • the entire tensioning force of the bolts through the fishplates 3 and 4 can thus be transmitted through the rail ends 1 and 2 by the rods 9 and 10. Because the rods 9 and 10 are permitted to flatten, a certain limitation on the magnitude of the wedge forces is obtained.
  • the bolt 5 may, before the paste has hardened, be completely and rigidly tensioned, and the joints may be immediately used after this tensioning. In this manner, it
  • spacers 11 are provided between the fishplates 3 and 4 and the rail 2 or 3 to insure the desired thickness or strength of the insulating layer on both sides of the rail.
  • a complete continuous groove 14 is defined around the marginal periphery of the fishplates 12 and 13 and an endless wire or rod 15 of synthetic material is positioned therein.
  • Insulating layer 16 is applied between the fishplates 12 and 13 and the rails 1 and 2 in the complete area boundedtby the rod 15.
  • a joint for connecting two rails comprising first and second rails arranged in end to end abutting relationship, a fishplate on each side of said rails spanning the juncture of said rails, an insulating material substantially filling the space between each fishplate and the respective rail, each fishplate having a continuous groove defined around the top and bottom and sides thereof, a continuous rod member disposed in the continuous groove of each of said fishplates, said insulating material extending between said rod at the top edge and said road at the bottom edge of said fishplate and being sealed within the space between said fishplate and said rail by said rod, and tensioning bolt means interconnecting said fish plates and said rails and flattening said rods against said rails.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Insulating Bodies (AREA)
  • Fish Paste Products (AREA)
US446557A 1964-04-08 1965-04-08 Rail joint construction Expired - Lifetime US3381892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0024755 1964-04-08

Publications (1)

Publication Number Publication Date
US3381892A true US3381892A (en) 1968-05-07

Family

ID=7343151

Family Applications (1)

Application Number Title Priority Date Filing Date
US446557A Expired - Lifetime US3381892A (en) 1964-04-08 1965-04-08 Rail joint construction

Country Status (4)

Country Link
US (1) US3381892A (de)
AT (1) AT256158B (de)
CH (1) CH432578A (de)
DE (1) DE1455395C3 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017995A1 (de) * 1979-04-18 1980-10-29 Edilon B.V. Elektrisch isolierende Verbindung zwischen zwei Schienenenden
US4386736A (en) * 1980-02-26 1983-06-07 Walter Benkler Electrically insulated rail joint connection
US5503331A (en) * 1994-05-20 1996-04-02 Portec-Rmp Division Insulated rail joint incorporating spacer-impregnated adhesive and method for bonding insulated rail joints
EP0824162A1 (de) * 1996-08-15 1998-02-18 Edilon B.V. Schienenverbindung
WO1999025926A1 (en) * 1997-11-18 1999-05-27 Edilon B.V. Method for connecting rail bars and rail bar connection obtained according to the method
US20060250126A1 (en) * 2005-04-22 2006-11-09 Rail Road Systems Device for creating a region which is substantially free of magnetic field, surrounded by a region with a magnetic field gradient
US20070272762A1 (en) * 2006-05-24 2007-11-29 Gary Click Insulated rail joint assembly
US20100213269A1 (en) * 2009-02-25 2010-08-26 L.B. Foster Company Composite rail joint end post
WO2019056010A1 (en) 2017-09-18 2019-03-21 L.B. Foster Company SUMMER END OF COMPOSITE RAIL JOINT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US307385A (en) * 1884-10-28 Jean jacques fbeuffd
US568650A (en) * 1896-09-29 Electric track-circuit rail-joint
US1797621A (en) * 1930-07-17 1931-03-24 Rail Joint Co Insulated rail joint

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US307385A (en) * 1884-10-28 Jean jacques fbeuffd
US568650A (en) * 1896-09-29 Electric track-circuit rail-joint
US1797621A (en) * 1930-07-17 1931-03-24 Rail Joint Co Insulated rail joint

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017995A1 (de) * 1979-04-18 1980-10-29 Edilon B.V. Elektrisch isolierende Verbindung zwischen zwei Schienenenden
US4386736A (en) * 1980-02-26 1983-06-07 Walter Benkler Electrically insulated rail joint connection
US5503331A (en) * 1994-05-20 1996-04-02 Portec-Rmp Division Insulated rail joint incorporating spacer-impregnated adhesive and method for bonding insulated rail joints
EP0824162A1 (de) * 1996-08-15 1998-02-18 Edilon B.V. Schienenverbindung
WO1999025926A1 (en) * 1997-11-18 1999-05-27 Edilon B.V. Method for connecting rail bars and rail bar connection obtained according to the method
US20060250126A1 (en) * 2005-04-22 2006-11-09 Rail Road Systems Device for creating a region which is substantially free of magnetic field, surrounded by a region with a magnetic field gradient
US20070272762A1 (en) * 2006-05-24 2007-11-29 Gary Click Insulated rail joint assembly
US7677466B2 (en) 2006-05-24 2010-03-16 Vae Nortrak North America Inc. Insulated rail joint assembly
US20100213269A1 (en) * 2009-02-25 2010-08-26 L.B. Foster Company Composite rail joint end post
WO2010099314A1 (en) 2009-02-25 2010-09-02 L . B. Foster Company Composite rail joint end post
US8070073B2 (en) 2009-02-25 2011-12-06 L.B. Foster Company Composite rail joint end post
WO2019056010A1 (en) 2017-09-18 2019-03-21 L.B. Foster Company SUMMER END OF COMPOSITE RAIL JOINT

Also Published As

Publication number Publication date
AT256158B (de) 1967-08-10
DE1455395C3 (de) 1974-08-08
DE1455395A1 (de) 1969-05-08
CH432578A (de) 1967-03-31
DE1455395B2 (de) 1974-01-03

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