US1933429A - Structural shape - Google Patents

Structural shape Download PDF

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Publication number
US1933429A
US1933429A US449617A US44961730A US1933429A US 1933429 A US1933429 A US 1933429A US 449617 A US449617 A US 449617A US 44961730 A US44961730 A US 44961730A US 1933429 A US1933429 A US 1933429A
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United States
Prior art keywords
web
section
rolled
structural shape
cross
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
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US449617A
Inventor
Robert J Harry
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Individual
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Individual
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Priority to US449617A priority Critical patent/US1933429A/en
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Publication of US1933429A publication Critical patent/US1933429A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Description

R. J. HARRY STRUCTURAL SHAPE Filed May 5, 1950] igzz mvemom' EOBEET .7. #451? Y,
Zf W F Patented a. 31, 1933 f UNITED STATES P ATENT OFFICE r I I 1,933,429 I it,
STRUCTURAL SHAPE Robert J. Harry, Homestead, Pa.
Application May 3, 1930. Serial No. 449,617 3 Claims. (01. 189-37) This invention relates tostructural shapes and, while not limited thereto, "relates more particularly to built-up structural shapes or beams formed by welding a series of rolled metal plates 5 together to form the .web and flange portions thereof, and has for its object the provision of a beam having a web portion of varying cross-sectional area throughout its length so as to provide maximum cross-section where the stress is greatest.
Referring more particularly tothe drawing, the
letter A designates the web portion of the beam and the letter B designates the flange portions thereof.
The web A is composed of a relatively thin center section 2 and successively thicker end sections 3 and 4, all of which sections arewelded together end-to-end, as at 5, to form acontinuous web.
The flange portions B are each composed of a single'rolled metalplate which extends along the entire length of the assembled and welded webA and is secured thereto by Welds 6 alongthe longitudinal edges of the web A. 1
By building up a beam as above described, I am able to provide a beam capable of supporting a predetermined load, which beam will be materially lighter than rolled beams capable of supporting a similar load due to the factthat rolled beams are necessarily of the same cross-section throughout their length, while a beam constructed in accordance with this invention may be made heavier where the stresses are greatest and lighter where the stresses are less.
The invention is shown in connection only with a shape analogous to an I-beam. But it may be applied to various shapes which; are in general The invention is illustrated connection with arc welding. But it is applicable alsotoshapes in which the parts are weldecl'together by any I-Ieretofore beams have generally had webs of I throughout its length.
similar to I-beams but differ therefrom in'theone of various other known or suitable methods.
While I have shown and described one specific embodiment of my invention, it will be understood that I do not wish to be limited thereto since various modifications may be'made without de- 69 parting from the scope thereof, as defined in the appended claims.
I claim: c
1. As a new article of manufacture, the builtup structural shape, characterized by having a 5 cross-section within the limits that may be rolled as an integral shape, which comprises web and flange portions formed of rolled metal plates and continuous welds uniting the fianges and longitudinal edges of the web portions into a unified 7 structure, said web portion being composed of a plurality of relatively short lengths of rolled meta1 plates of varying thickness welded end-to-end to form a continuous web of single plate thickness 2. As a new article of manufacture, the built.- up structural shape, characterized by having a cross-section within the limits that may be rolled as an integral shape, which comprises web .and
flange portions formed'of rolled metal plates and continuous welds uniting the flanges and longitudinal edges of the web portions into a unified structure, said web portion being composed of a central section of rolled metal plate of relatively thin cross-section, and otherrelatively short sections of rolled metal plate of successively thicker cross-section, said sections of plate being arranged end-to-end and welded together to form a, continuous web of single plate thickness throughout its length. 3. As a new article of manufacture, the builtup structural shape, characterized by having a cross-section within the limits that may be rolled as an integral shape, which comprises web and flange portions formed of rolled metal plates and continuous welds uniting the flanges and longitudinal edges of the web portions into a unified structure, said web portion being composed of a central section of rolledmetal plate of relatively thin cross-section, and other relatively short sections of rolled metal plate of successively thicker cross-section, said sections of plate being arranged end-to-end and welded together to form a continuous web of single plate thickness throughout its length, and each of said flange portions being composed of a single rolled metal plate of uniformcross-section throughout.
'ROBERT J. HARRY.
US449617A 1930-05-03 1930-05-03 Structural shape Expired - Lifetime US1933429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US449617A US1933429A (en) 1930-05-03 1930-05-03 Structural shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US449617A US1933429A (en) 1930-05-03 1930-05-03 Structural shape

Publications (1)

Publication Number Publication Date
US1933429A true US1933429A (en) 1933-10-31

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US449617A Expired - Lifetime US1933429A (en) 1930-05-03 1930-05-03 Structural shape

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