US3697747A - Frog - Google Patents

Frog Download PDF

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Publication number
US3697747A
US3697747A US50660A US3697747DA US3697747A US 3697747 A US3697747 A US 3697747A US 50660 A US50660 A US 50660A US 3697747D A US3697747D A US 3697747DA US 3697747 A US3697747 A US 3697747A
Authority
US
United States
Prior art keywords
frog
wedges
rail
point
wedge
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
US50660A
Other languages
English (en)
Inventor
Curt Edeling
Joseph Eisenmann
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.)
ELEKTRO-THERMIT WEICHENBAU 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
Priority claimed from DE19691933451 external-priority patent/DE1933451C/de
Application filed by Elektro Thermit GmbH filed Critical Elektro Thermit GmbH
Application granted granted Critical
Publication of US3697747A publication Critical patent/US3697747A/en
Anticipated expiration legal-status Critical
Assigned to ELEKTRO-THERMIT WEICHENBAU GMBH reassignment ELEKTRO-THERMIT WEICHENBAU GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ELEKTRO-THERMIT GMBH
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
    • E01B7/00—Switches; Crossings
    • E01B7/10—Frogs
    • E01B7/14—Frogs with movable parts

Definitions

  • This invention relates to a frog in which the gap between the frog point and the wing rail is closed by means of wedges corresponding to the direction of travel.
  • the present invention obviates the disadvantages and drawbacks described above by means of an improved construction of the frog.
  • the guideless point of the frog between the frog point and the wing rail is closed by means of specifically designed wedges which are displaceable in the longitudinal direction.
  • the wedges are maintained in position in the vertical and horizontal directions by means of recesses in the bottom of the frog and by means of machining in the lower side of the rail head.
  • the upper edges of the wedges are positioned at the same height as the wing rails; the frog point is lowered in the forward portion thereof.
  • the wedges are moved on an oblique plane whose inclination may be so selected that the wedges act in a self-locking manner.
  • the displacement of the wedges may be linked to that of the tongues electrically, hydraulically, mechanically, or in any other manner.
  • the assumption of the end position of the wedge is controlled with the aid of electrical contacts. These contacts are connected in series with those which serve for checking the end position of the switch tongue.
  • the gap in the branching-off rail is equally closable in accordance with the present invention. It is also possible in this manner to drive onto the branching-off rail also at full speed.
  • the advantage of the present invention is that the frog remains a closed unit in contrast to the known constructions of frogs with movable wing rails or frog points, and, if necessary, the frog according to the present invention may be travelled on as a normal frog. Additional advantages of the present invention are that the wedges are laterally well supported by means of the wing rails in the direction in which the greatest guide forces are effective, that the frog with the movable parts thereof may be installed in an existing rail system, and the wedges can be easily replaced in case of wear and tear thereon.
  • FIG. 1 is a plan view of a rail including the improved frog of the present invention
  • FIG. 2 is a view in cross-section taken on line A-A of FIG. 1 looking in the direction of the arrows, and
  • FIG. 3 is a view in cross-section taken on line BB of FIG. 1 and looking in the direction of the arrows.
  • the wedges 1 and 1' may be slid by meansof the hydraulic cylinders 2 and 2' into the gap between the frog point 3 and the wing rails 4 and 4 thus locking the path of travel in the lateral direction.
  • the wedges 1 and 1' are maintained in the position thereof in the horizontal and vertical directions.
  • the drive of the wedges also may be effected by means of a spindle or other mechanical and/or electrical devices suitable for the purpose.
  • the end position of the wedges in the operative position is assured by means of stop members but the wedges also may be maintained in the end position thereof by means of a special construction of the hydraulic cylinders and/or appropriate mechanical devices.
  • FIGS. 2 and 3 A specific shaping of the surfaces of the wedges 1 and 1' is illustrated in FIGS. 2 and 3.
  • the wedge l' is shown slightly higher than the frog point 3
  • the wedge l is lower than the wing rail4.
  • a frog having a frog point and wing rail
  • the improvement comprising longitudinally movable wedge means for closing the gap between the frog point and the wing rail, said means being vertically displaced when moved longitudinally.
  • a frog according to claim 1 including means for locking the wedge means in the end position thereof.
  • a frog according to claim 1 in which the wedge means are inclined and act in self-locking manner.
  • a frog according to claim 1 including means for varying the end position of the wedge means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Railway Tracks (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
US50660A 1969-07-02 1970-06-29 Frog Expired - Lifetime US3697747A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691933451 DE1933451C (de) 1969-07-02 Herzstück mit heb- und senkbaren Füllstücken zwischen der Herzstückspitze und den Flügelschienen

Publications (1)

Publication Number Publication Date
US3697747A true US3697747A (en) 1972-10-10

Family

ID=5738588

Family Applications (1)

Application Number Title Priority Date Filing Date
US50660A Expired - Lifetime US3697747A (en) 1969-07-02 1970-06-29 Frog

Country Status (11)

Country Link
US (1) US3697747A (enrdf_load_stackoverflow)
JP (1) JPS4822723B1 (enrdf_load_stackoverflow)
AT (1) AT295577B (enrdf_load_stackoverflow)
BE (1) BE752867A (enrdf_load_stackoverflow)
CH (1) CH505252A (enrdf_load_stackoverflow)
FR (1) FR2053966A5 (enrdf_load_stackoverflow)
GB (1) GB1309776A (enrdf_load_stackoverflow)
NL (1) NL149873B (enrdf_load_stackoverflow)
NO (1) NO125004B (enrdf_load_stackoverflow)
SE (1) SE355618B (enrdf_load_stackoverflow)
YU (1) YU32446B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764802A (en) * 1972-05-04 1973-10-09 Abex Corp Railroad frogs
US3857536A (en) * 1970-10-24 1974-12-31 Elektro Thermit Gmbh Frog with closable wheel over-run
US3860205A (en) * 1971-12-28 1975-01-14 Elektro Thermit Gmbh Closing device for movable parts in railway frog and crossing areas
US4917339A (en) * 1987-11-05 1990-04-17 Voest-Alpine Maschinenbau Gesellschaft M.B.H. Reversing device for swivelable rails or movable frogs within the crossing area of a railway switch
ES2080642A2 (es) * 1993-01-07 1996-02-01 Segundo Serrano Eugenio San Desvio con bloques para desviar en los ferrocarriles el material movil de una via a otra.
US6266866B1 (en) * 1999-07-21 2001-07-31 Vae Nortak North America Inc. Frog insert and assembly and method for making frog assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2399735B1 (es) * 2010-06-15 2013-11-13 Jez Sistemas Ferroviarios, S.L. Corazon agudo de punta movil para aparatos de via de carril garganta
JP6525482B2 (ja) * 2013-12-20 2019-06-05 ラフバラ・ユニバーシティＬｏｕｇｈｂｏｒｏｕｇｈ Ｕｎｉｖｅｒｓｉｔｙ 鉄道ポイント、鉄道ポイント操作装置、及び鉄道軌道クロッシング

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329098A (en) * 1885-10-27 Railroad-frog
US345733A (en) * 1886-07-20 Railroad tie or sleeper
US528776A (en) * 1894-11-06 Railroad-frog
US569653A (en) * 1896-10-20 Railroad-switch
US584530A (en) * 1897-06-15 Railway-frog
US1146888A (en) * 1911-10-17 1915-07-20 James B Snyder Rail device.
US2385248A (en) * 1944-01-27 1945-09-18 Harrison R Akers Guardrail clamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329098A (en) * 1885-10-27 Railroad-frog
US345733A (en) * 1886-07-20 Railroad tie or sleeper
US528776A (en) * 1894-11-06 Railroad-frog
US569653A (en) * 1896-10-20 Railroad-switch
US584530A (en) * 1897-06-15 Railway-frog
US1146888A (en) * 1911-10-17 1915-07-20 James B Snyder Rail device.
US2385248A (en) * 1944-01-27 1945-09-18 Harrison R Akers Guardrail clamp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857536A (en) * 1970-10-24 1974-12-31 Elektro Thermit Gmbh Frog with closable wheel over-run
US3860205A (en) * 1971-12-28 1975-01-14 Elektro Thermit Gmbh Closing device for movable parts in railway frog and crossing areas
US3764802A (en) * 1972-05-04 1973-10-09 Abex Corp Railroad frogs
US4917339A (en) * 1987-11-05 1990-04-17 Voest-Alpine Maschinenbau Gesellschaft M.B.H. Reversing device for swivelable rails or movable frogs within the crossing area of a railway switch
ES2080642A2 (es) * 1993-01-07 1996-02-01 Segundo Serrano Eugenio San Desvio con bloques para desviar en los ferrocarriles el material movil de una via a otra.
US6266866B1 (en) * 1999-07-21 2001-07-31 Vae Nortak North America Inc. Frog insert and assembly and method for making frog assembly

Also Published As

Publication number Publication date
NL7009170A (enrdf_load_stackoverflow) 1971-01-05
YU159670A (en) 1974-04-30
CH505252A (de) 1971-03-31
FR2053966A5 (enrdf_load_stackoverflow) 1971-04-16
NL149873B (nl) 1976-06-15
NO125004B (enrdf_load_stackoverflow) 1972-07-03
YU32446B (en) 1974-10-31
DE1933451A1 (de) 1971-01-28
BE752867A (fr) 1970-12-16
JPS4822723B1 (enrdf_load_stackoverflow) 1973-07-09
AT295577B (de) 1972-01-10
SE355618B (enrdf_load_stackoverflow) 1973-04-30
GB1309776A (en) 1973-03-14

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ELEKTRO-THERMIT WEICHENBAU GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ELEKTRO-THERMIT GMBH;REEL/FRAME:005242/0323

Effective date: 19891025