US2855155A - Hollow rail with three flanges - Google Patents

Hollow rail with three flanges Download PDF

Info

Publication number
US2855155A
US2855155A US614017A US61401756A US2855155A US 2855155 A US2855155 A US 2855155A US 614017 A US614017 A US 614017A US 61401756 A US61401756 A US 61401756A US 2855155 A US2855155 A US 2855155A
Authority
US
United States
Prior art keywords
flanges
rail
webs
arcs
points
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
US614017A
Other languages
English (en)
Inventor
Andrianne Jules Louis Charles
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2855155A publication Critical patent/US2855155A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/06—Reversible or invertible rails

Definitions

  • the subject of this invention is the provision of a rail with three flanges which, for the minimum weight that is the minimum expenditure of material, permits as great a load as possible and which offers an advantageous moment of resistance together with a regular distribution of stresses. Moreover, manufacture is rendered less costly since it affords the possibility of using a single starting profile.
  • the tubular starting profile and the final profile have a constant wall thickness over their entire periphery and the webs are limited on the inside and on the outside by arcs of a circle or by the chords which subtend the said arcs and whose circles to which these arcs belong have their centers situated on the axes of symmetry of the respective flanges opposite the webs which they form and are traced out with one or other of radii such that each external arc cuts the lateral faces of the two neighboring flanges at two symmetrical points and, if extended, meets the enclosing circumference corresponding to the tubular starting profile at symmetrical points.
  • the circles of which certain arcs or the chords which subtend them form the external walls of the webs are traced out with a radius equal to the distance separating similar points situated respectively on the axes of symmetry of the flanges; these points may, for example, be situated outside or on the enclosing circumference, on the lines limiting the flanges, outside or, finally, inside these lines.
  • the thickness of the walls is preferably selected so that the stresses on the inner surface of the profile at the site of the flanges are equal to zero and reach their maximum value at the outer surface of the profile, this value obviously remaining below the breaking load. In this Way only compression stresses occur in the flanges, which prove particularly favorable in the case of a load.
  • Figure l is a diagrammatic view of the end of a rail with three flanges, with the arcs limiting the webs and the centers.
  • Figure 2 is similar to Figure 1 and shows the arrangement of the isostatic lines.
  • Figure 3 is similar to Figure l, but in this case the webs are limited by chords subtending the arcs.
  • Figures 4 and 15 are respectively similar views to Figures land 3, showing modified embodiments.
  • the rail is made from the ordinary tubular starting profile, the outer peripheral surface of which is shown diagrammatically in chain-dotted lines by the enclosing circumference 1; it has the same thickness 4 for the walls both at the flanges 2 and at the webs 3.
  • the webs are limited by two arcs, 5 on the outside and 6 on the inside.
  • the centers of the circles corresponding to these arcs are situated at 8 on the respective axes of symmetry 2' of the flanges and at the middle of the lines 7 limiting the said flanges 2; each center is on a flange 2 opposite a web 3.
  • each external arc of a circle 5 pass through the two similar points 8 of the two neighboring flanges situated on either side of the corresponding web 3, that is to say the circles to which the arcs 5 belong are traced with radii R equal to the distance between two similar points 8.
  • the radii of the internal arcs 6 are smaller than the radii of the external .arcs 5 by a value equal to the thickness 4 0f the wall.
  • the external arcs 5 cut the lateral faces 2a at two points 3a which are symmetrical in relation to the axes 2; the connection of the Webs to the flanges is progressive however.
  • the points 8 may be taken as centers and arcs be traced of a circle of radius R equal to the distance between two points 8'.
  • the webs would be limited by arcs similar to 5a.
  • the points 8 or 8 could be taken as center and as radius the distance from the said center to one or other of the points 8', 8 which are similar and symmetrical in relation to the axis of symmetry passing through the center in question.
  • Figure 2 shows a rail as illustrated in Figure 1 and subjected to three equal forces 9 acting at 8 on the center of the flanges 2.
  • the distribution of the isostatic lines is shown by chain-dotted lines. It will be seen that the isostatic curves coincide with the surfaces 5 of the webs and that especially favorable proportions are thus obtained.
  • the width of the cluster of isostatic 3 are curved and limited by arcs of a circle.
  • . 3 lines is equal to the thickness 4 of the wall of the rail having the maximum number of isostatic lines and the most favorable capacity of resistance for a minimum of weight and material.
  • the profile of the rail is thus used to the maximum in its entirety under the, action of a load, thus giving the minimum fatigue of the material for a maximum load.
  • Figure 3 shows the straight cross-section of a rail similar to that shown in Figure 1; according to this modified embodiment, the webs 3 are limited on the outside and on the inside by the plane walls 5 and 6 constituted by the chords of the arcs 5 and 6 traced as explained hereinabove.
  • Figure 4 is similar to Figure 1, that is to say the webs In theembodiment illustrated, having as center the point 12 inside a flange land a radius equal to the distance between two similar points 12, the arcsSb limiting the webs to the outside and 6b. limiting the websto the inside are traced.
  • The. axesuofsymmetry 2' when extended givesimilar points at 10.
  • I Two other neighboring modified embodiments can be obtained by taking respectively the points 8 and 8'. as center and as radius the distances 8-10 and 8'.1 0.fro m these respective centers to the meeting point of the axis of symmetry which passes through the said centers with the arc 5b limiting the opposite web to the outside.
  • the arcs limiting the webs being capable of being traced in this manner have not been included in the drawing in order not to overburden the figure.
  • the webs are limited on the outside by the chords 5b subtending the arcs of a circle 5b traced from the points 12 as center with radii equal to the distance between the said points 12; on the inside, the webs are limited according to the thickness of the tube by parallels 6b to the chords 5b.
  • the present invention is not restricted to the exemplified embodiments described hereinabove; without departing from the scope of the invention it is possible to select at any point whatsoever of the axes 2' the centers of the circles corresponding to the arcs limiting the webs and traced with a radius such that the are described to form the external wall of the webs meets the two neighboring lateral faces of the flanges and, if extended, cuts the enclosing circumference between the lateral faces of the flanges situated on either side of the axis on which the center is situated.
  • a hollow rail comprising three rail heads symmetrically located with respect to the longitudinal axis of the rail obtained by deforming of a tube or by extrusion and having the same wall thickness over its entire periphery, the webs of the rail between two neighboring rail-heads being limited on the inside and on the outside by arcs of circles, the centers of the circles to which these arcs belong being on the respective axes of symmetry of the opposite rail-heads and each external are extension cuts the enclosing circumference of the rail in those parts comprised in the width of the rail-heads.
  • a hollow rail comprising three rail heads symmetrically located with respect to the longitudinal axis of the rail obtained by deforming of a tube or by extrusion and having the same wall thickness over its entire periphery, the webs of the rail between two neighboring rail heads being limited on the inside and on the outside by arcs of circles, the centers of the circles to which these arcs belong being on the respective axes of symmetry of the opposite rail heads and each external are extension cuts the enclosing circumference of the rail in those parts comprised in the width of the rail-heads and the centers of the circles to which belong the arcs limiting the webs, being located adjacent the rail heads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
US614017A 1955-10-07 1956-10-04 Hollow rail with three flanges Expired - Lifetime US2855155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1158084X 1955-10-07

Publications (1)

Publication Number Publication Date
US2855155A true US2855155A (en) 1958-10-07

Family

ID=3893991

Family Applications (1)

Application Number Title Priority Date Filing Date
US614017A Expired - Lifetime US2855155A (en) 1955-10-07 1956-10-04 Hollow rail with three flanges

Country Status (4)

Country Link
US (1) US2855155A (de)
AT (1) AT199686B (de)
FR (1) FR1158084A (de)
GB (1) GB852888A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973669A (en) * 1975-02-19 1976-08-10 Kornylak Corporation Endless cable conveyor with molded lugs
US4398469A (en) * 1979-10-22 1983-08-16 Sante Zelli Laterally compensating radial trolleys

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523165B1 (fr) * 1982-03-12 1986-07-11 Pouget Robert Perfectionnements apportes aux rails, traverses, et organes de fixation du rail sur les traverses d'une voie ferree de chemin de fer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE518720A (de) *

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE518720A (de) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973669A (en) * 1975-02-19 1976-08-10 Kornylak Corporation Endless cable conveyor with molded lugs
US4398469A (en) * 1979-10-22 1983-08-16 Sante Zelli Laterally compensating radial trolleys

Also Published As

Publication number Publication date
GB852888A (en) 1960-11-02
AT199686B (de) 1958-09-25
FR1158084A (fr) 1958-06-06

Similar Documents

Publication Publication Date Title
US1911413A (en) Metallic column and girder
US10550914B2 (en) Concave-convex arc line gear mechanism for parallel shaft transmission
DE3437564C2 (de) Stahlrohr als Rißstopper für Gasleitung
US2260779A (en) Method of making ferroconcrete reinforcing elements
DE2626256A1 (de) Luftreifen
DE202015103534U1 (de) Homokinetisches Universalgelenk des Dreibeintyps
WO1980001193A1 (en) Coupling assembly
US2855155A (en) Hollow rail with three flanges
US4180895A (en) Methods of forming angled end bearing liners
GB746130A (en) Improvements relating to pipe element and the assembly thereof with another element
DE1505877B2 (de) Schwingungsgedaempfter fahrzeugluftreifen
AT516941B1 (de) Vollrad für ein Schienenfahrzeug
US3038755A (en) Railway wheel
US3149513A (en) Method of making laminated pipe
US3442170A (en) Sleeve adaptor
US2685305A (en) Corrugated tube and bellows
US993242A (en) Solid-rolled cross-sectionally-h-shaped metal bar or structural section.
US2197631A (en) Keyed shaft structure
US11493157B2 (en) Flush joint high torque thread
GB564269A (en) Improvements in or relating to thread-generating machines
US1703905A (en) Device for reducing piston slap in internal-combustion engines
US2142758A (en) Ferroconcrete reinforcement section
US1211763A (en) Connecting-bar.
US2006145A (en) Pulley
US3426616A (en) Eccentric shaft and plunger pump provided with such a shaft