US2717740A - Rail anchor with positive applying stop - Google Patents

Rail anchor with positive applying stop Download PDF

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Publication number
US2717740A
US2717740A US284047A US28404752A US2717740A US 2717740 A US2717740 A US 2717740A US 284047 A US284047 A US 284047A US 28404752 A US28404752 A US 28404752A US 2717740 A US2717740 A US 2717740A
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United States
Prior art keywords
rail
anchor
bar
hook
bend
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Expired - Lifetime
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US284047A
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English (en)
Inventor
Max K Ruppert
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Poor and Co
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Poor and Co
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Publication date
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Priority to US284047A priority Critical patent/US2717740A/en
Priority to FR1076074D priority patent/FR1076074A/fr
Application granted granted Critical
Publication of US2717740A publication Critical patent/US2717740A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01B13/00—Arrangements preventing shifting of the track
    • E01B13/02—Rail anchors
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2201/00—Fastening or restraining methods
    • E01B2201/08—Fastening or restraining methods by plastic or elastic deformation of fastener

Definitions

  • This invention relates to railway rail anchoring devices and particularly to a well known type of rail anchor in which a rolled metal bar is bent at one end into hook form to provide the anchor device with upper and lower jaw portions for gripping the top and bottom surfaces of a rail base flange at one side of the rail.
  • the unbent portion of the bar constitutes the main body of the anchor and extends across the rail beneath the base thereof in a position to abut against a vertical face of a crosstie.
  • This portion of the anchor is provided with a locking shoulder for engaging the longitudinal edge of the base flange at the other side of the rail.
  • the invention is directed to the solution of a problem (undue spreading of the hook by overdriving) which is present in rail anchors of the heavy bar hook-jaw type because of the structural features which characterize this type of rail anchor.
  • Anchors of this type are characterized by their ruggedness of construction, as distinguished from the more flexible and resilient type of one piece anchor devices. The ruggedness is required to maintain the desired strong grip on-the rail base and to prevent undue spreading of the rail clamping jaws when the pressure on said jaws is increased by a lever grip of the jaws which is developed when the creeping movement of a rail presses the under-rail portion of the anchor against an adjacent crosstie or other stationary part of the roadbed.
  • the anchors of the above type are also characterized by their simplicity of contour, whereby it is practical to form such type of anchor from a heavy rolled steel bar and principally by bending operations, as distinguished from forging and upsetting operations, the bending operations being utilized to facilitate economical production and to avoid substantial change in the molecular structure of the rolled steel bar.
  • the hook portiontof such anchor is in theform of a single continuous bend and is bent to provide precision fit of the upper and lower jawson the rail base flange.
  • the upper and lower jaws are provided so as to accommodate rail baseflanges of slightly diflerent thickness, but the spreading tolerance of the hook is necessarily. low, since the elastic limit of the heavy bar stock is quite low.
  • the principal object of the present invention is to provide, in a rail anchor of the above general type,.a stop means for preventing overdriving of the hook portion of the anchor in the course of its application to. a rail flange and thereby prevent undue spreading of the jaws during such application.
  • the improved stop means are in the form of spaced apart shoulders formed on the curved inner surface of the hook and, since the curved inner surface of the hook, of anchors of the type above described, is normally spaced a short distance outwardly from the vertical edge face of a rail base flange, the location of the stop shoulders does not involve increasing the length of the hook portion of the anchor or otherwise altering its characteristic grip on the rail base.
  • the stop shoulders of the present invention are spaced apart lengthwise of the rail in a manner whereby they can be formed by displacing the metal of the bar at the marginal portions of the bar and therefore do not alter or weaken the molecular structure of the bar intermediate said stop shoulders.
  • the specific from of heavy bar anchor herein shown is formed from metal stock of T-shaped configuration in cross-section, the said metal stock including a reinforcing rib having a width equal at least to the combined widths of the lateral arms of the bar and is centrally arranged and extends lengthwise of the stock.
  • the necessary rigidity in the hook end for resisting outward spreading thereof is provided principally by the said centrally arranged reinforcing rib and to a lesser extent by the lateral arms of the T-shaped stock.
  • the improved stop shoulders are formed in the bend of the hook by displacing a portion of the metal contained in the horizontal arms of the T-shaped bar preliminary to the bending of the bar into its final form.
  • the lateral arms are relatively thin as compared with the minimum overall width (hereinbefore specified) for bars ordinarily used.
  • the lateral flanges of the bar are approximately thick and, therefore, do not have sufficient thickness to cushion or absorb the shoulder forming pressures applied thereto, but on the contrary permit sufficient displacement of metal in the arms to form the outpressed stop shoulders.
  • the said stop shoulders being formed by displacing a portion of the metal contained in the horizontal arms of the T-bar, do not extend across the bar, but on the contrary taper off and merge into the bend of the bar at locations adjacent'the opposite faces of the central reinforcing rib, thereby making it practical to form the bend, in the region of the vertical reinforcing rib with a continuous are, whereby the flexing of the hook is uniformily distributed to the reinforcing rib throughout the entire curvature of said continuous are.
  • the displacement of the metal in the lateral arms of the T-bar can be accomplished Without materially weakening the bend of the anchor, since the rigidity of the hookshaped bend, as previously indicated, is provided largely by the outwardly extending rigidifying rib.
  • the tail end of the anchor body is formed with an offset locking shoulder for engaging the edge of the rail base 'flangeat the other side of the rail when the anchor is in its applied position.
  • Pig. 1 is a plan view of a base portion of a railroad rail supported on a rail supporting structure and .provided with a rail anchor device, constructed in accordance with this invention, applied to said base; i
  • Fig. 2 is a side view of the rail anchor shown in Fig. l, the rail base flange being shown in section;
  • Fig. 3 is an enlarged view of the hook end of the anchor device shown in Fig. 2 for the purpose of showing in clearer detail the configuration of the hook-shaped bend and the construction of the stop shoulders;
  • Fig. 4 is a fragmentary plan view similar to Fig. 1, but illustrating a slightly modified construction
  • Fig. 5 is a side view similar to Fig. 2, but illustrating specifically the modified embodiment shown in Fig. 4;
  • Fig. 6 is a fragmentary sectional plan taken on line 6-6 of Figs. 2 and 5, respectively, to illustrate the spaced relation of the stop shoulders of both anchor structures herein shown.
  • 10 designates the main body portion of a rail anchor constructed in accordance with this invention applied to the base portion 11 of a railroad rail.
  • the said railroad rail is supported by means of a crosstie 12 and a tie plate 13 which intervenes between the top surface of the cross tie and the bottom surface of the rail base.
  • the tie plate 13, as herein illustrated, is provided with spaced shoulders 14-14 for defining a seat for the rail base and the plate is secured to the crosstie 12 by means of suitable fastening devices 15.
  • the fastening devices may be of any approved form and are illustrated herein as ordi nary track spikes which are driven into the underlying crosstie through square openings 16 formed in the tie plate.
  • the rail anchor device is formed from a rolled metal bar of T-shaped cross-section, the bar being arranged so that the lateral arms 17-17 provide a platform for engaging the bottom surface of the rail base and the centrally dispose-d rib 18 of the bar provides a flat vertical face of large area for abutting against a vertical face of the adjacent crosstie 12.
  • One end of the main body 10 is bent into hook form to provide the anchor with upper and lower jaws 19-26 which grip the top and bottom surfaces, respectively, of one flange of the rail base.
  • the bend 21 for connecting the upper jaw 19 with the lower jaw is formed with a radius of approximately so that the diameter of the inner bend of the hook will be sufiicient to provide a substantial clearance 22 above the upper corner portion 23 of the rail base and also provide a substantial clearance 24 below the lower corner portion of the rail base.
  • a pair of aligned but spaced apart shoulders 25-25 are formed on the inner surface 26 of the bend so as to provide vertical shoulder surfaces 27-27 adapted to abut against a vertical edge surface of the rail base to limit the applying movement of the anchor.
  • the lower edges of the shoulders 25-25, as illustrated in Figs. 1, 2 and 3, ex tend below the plane of the bottom surface of the rail base and merge into the inner curved surface of the hook by means of a fillet 28.
  • the upper portion of the said shoulders 25-25 likewise merge into the inner curved surface of the hook by means of fillets 29.
  • the clearance space 24, as shown in Fig. 3, provides the necessary clearance to facilitate the formation of the rigidifying fillet 28 without danger of obstructing flat contact of the shoulder surfaces 27 with the adjacent vertical edge face of the rail base flange.
  • the shoulders 25-25 are preferably formed by applying metal displacing force to the outer face of the arms 17-17 of the T-bar near the lower portion of the bend 21 whereby the metal is displaced substantially as indicated by the indentation 30.
  • a portion of the displaced metal is, of course, pressed laterally into the walls of the depression 30, but the major portion is pressed through the lateral arms 17-17 of the bar and is utilized to form the shoulders 25-25.
  • the inner ends of said shoulders merge into the inner curved surface 26 of the hook at locations closely adjacent to the planes of the opposite sides of the vertical flange 18 as shown in Figs. 1 and 6.
  • the dotted line position of the upper jaw 19, as shown in Fig. 3, illustrates the initial position of the upper jaw before the hook portion is spread during the application of the anchor to a rail. It will be seen, therefore, that the normal spreading of the upper and lower jaws, during the application of an anchor to a rail, is rather small.
  • the upper jaw 19 bears only at its terminal end against the inclined upper surface of the rail base, the bearing contact being at a substantial distance from the vertical edge of the rail.
  • This construction utilizes the upper jaw as a lever to turn the anchor about the lower jaw 20 as a fulcrum to hold the main body portion tightly against the bottom surface of the rail base.
  • the tail end of the body is offset to provide a shoulder 31 which snaps up into locking engagement with the edge of the rail base flange 32 so as to hold the jaw end of the anchor in its tight gripping engagement with the rail.
  • the distance between the vertical faces 27-27 of the stop shoulders 25-25 and the vertical surface of the locking shoulder 31 is sufiicient to accommodate the normal variations in the widths of rail bases for which the anchor is designed to fit. There will be normally a slight clearance between the vertical faces 27-27 of the stop shoulders 25-25 and the adjacent vertical edge surface of the rail base.
  • the hook portion of the anchor device is formed by bending as distinguished from upsetting operations and the single continuous bend is a characterizing feature of the general type of anchor dealt with in this application.
  • the specific manner and the means for bending the bar into book form is not disclosed nor claimed specifically in this application, since the said method and apparatus constitute the subject matter of my co-pending application Serial No. 153,164, filed March 31, 1950, of which the present application is a continuation in part.
  • the anchor construction shown in said Figs. 4 and 5 is identical to the construction shown in Figs. 1, 2 and 3 except that the inner surface 26 of Figs. 2 and 3 curved downwardly beneath the lower surface of the rail base and in spaced relation to the lower corner of said base to provide the clearance 24, whereas the lower portion 26 of the inner surface of the bend 21 of the embodiment shown in Fig. 5 merges into the plane of the flat upper surface of the lower jaw 20 at the lower corner of the rail base.
  • the bend 21 is so positioned to provide a substantial clearance 22 above the upper corner of the rail base flange, but there is no appreciable clearance beneath the lower corner of the rail base and the top surface of the lower jaw 20 and the vertical faces 27-27 of the shoulders 25-25 of said Fig.
  • a railway rail anchor adapted to be driven transversely of a rail to its rail gripping position and comprising a rolled steel bar of T-shaped cross-section bent at one end into hook form with the lateral arms of the T-bar forming the inner face of the bend and providing upper and lower jaws having wide flat faces for gripping the top and bottom surfaces, respectively, of a rail base flange at one side of the rail and with the vertical web of the T-bar providing a centrally arranged outwardly projecting reinforcing rib for said bend and the upper jaw, and the bend of the hook having a continuous arc in the region within the side planes of said reinforcing rib, a pair of spaced apart aligned shoulders pressed outwardly from the lateral arms of the T-bar, one at each side of said reinforcing rib, to project outwardly from the curved inner face of said continuous bend for abutting against an edge portion of said base flange to limit the applying movement of the anchor and thereby prevent flexing of said hook beyond its
  • a railway rail anchor adapted to be driven trans versely of a rail to its rail gripping position and comprising a rolled steel bar of T-shaped cross-section bent at one end into hook form with the lateral arms of the T-bar forming the inner face of the bend and providing upper and lower jaws having wide flat faces for gripping the top and bottom surfaces, respectively, of a rail base flange at one side of the rail and with the vertical web of the T-bar providing a centrally arranged outwardly projecting reinforcing rib for said bend and the upper jaw, and the bend of the hook having a continuous arc in the region within the side planes of said reinforcing rib, a pair of spaced apart aligned shoulders pressed outwardly from the lateral arms of the T-bar, one at each side of said central reinforcing rib, to project outwardly from the curved inner face of said continuous bend for abutting against an edge portion of said base flange to limit the applying movement of the anchor and thereby prevent flexing of said hook beyond
US284047A 1952-04-24 1952-04-24 Rail anchor with positive applying stop Expired - Lifetime US2717740A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US284047A US2717740A (en) 1952-04-24 1952-04-24 Rail anchor with positive applying stop
FR1076074D FR1076074A (fr) 1952-04-24 1953-04-23 Ancrage de rails

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US284047A US2717740A (en) 1952-04-24 1952-04-24 Rail anchor with positive applying stop

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US2717740A true US2717740A (en) 1955-09-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100081A (en) * 1957-09-17 1963-08-06 Poor & Co Rail anchor
US3102690A (en) * 1959-06-29 1963-09-03 True Temper Corp Rail anchors
US3168245A (en) * 1962-02-07 1965-02-02 Poor & Co Continuous stop rail anchor
US11186449B2 (en) * 2019-05-31 2021-11-30 Kyocera Document Solutions Inc. Gripping method and component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1680437A (en) * 1927-07-20 1928-08-14 P & M Co Rail anchor
US1918305A (en) * 1930-11-28 1933-07-18 P & M Co Rail anchor
US2161484A (en) * 1938-06-16 1939-06-06 Poor & Co Double bearing rail anticreeper
US2171819A (en) * 1938-06-18 1939-09-05 Poor & Co Rail anchor
US2483491A (en) * 1947-05-21 1949-10-04 Gehnert Adam Rail anchor and spike harness

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1680437A (en) * 1927-07-20 1928-08-14 P & M Co Rail anchor
US1918305A (en) * 1930-11-28 1933-07-18 P & M Co Rail anchor
US2161484A (en) * 1938-06-16 1939-06-06 Poor & Co Double bearing rail anticreeper
US2171819A (en) * 1938-06-18 1939-09-05 Poor & Co Rail anchor
US2483491A (en) * 1947-05-21 1949-10-04 Gehnert Adam Rail anchor and spike harness

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100081A (en) * 1957-09-17 1963-08-06 Poor & Co Rail anchor
US3102690A (en) * 1959-06-29 1963-09-03 True Temper Corp Rail anchors
US3168245A (en) * 1962-02-07 1965-02-02 Poor & Co Continuous stop rail anchor
US11186449B2 (en) * 2019-05-31 2021-11-30 Kyocera Document Solutions Inc. Gripping method and component

Also Published As

Publication number Publication date
FR1076074A (fr) 1954-10-22

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