US1604151A - Light-weight girder - Google Patents

Light-weight girder Download PDF

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Publication number
US1604151A
US1604151A US392563A US39256320A US1604151A US 1604151 A US1604151 A US 1604151A US 392563 A US392563 A US 392563A US 39256320 A US39256320 A US 39256320A US 1604151 A US1604151 A US 1604151A
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US
United States
Prior art keywords
girder
light
flange plates
plates
sheet metal
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
US392563A
Inventor
Dornier Claude
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.)
FIRM LUFTSCHIFFBAU ZEPPELIN GM
FIRM LUFTSCHIFFBAU ZEPPELIN GmbH
Original Assignee
FIRM LUFTSCHIFFBAU ZEPPELIN GM
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 FIRM LUFTSCHIFFBAU ZEPPELIN GM filed Critical FIRM LUFTSCHIFFBAU ZEPPELIN GM
Application granted granted Critical
Publication of US1604151A publication Critical patent/US1604151A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
    • B64C1/065—Spars
    • 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
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • 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

Definitions

  • My invention refers to girders which combine small weight with reat strength and can be manufactured witfi ease, so that they are suitable for wholesale manufacture more especially for the purpose of air craft construction.
  • a middle web of sheet metal bent in zigzaa fashion has its longitudinal edges rigidly fixed to flange plates extending vertically in regard to the surface of the middle web.
  • the width of the flange plates does not materially exceed the depth of the corrugations formed in the middle web which is thus easily accessible from both sides and in this way distinguishes favorably from girders whose webs consist of a row of adjoining cells. Besides, it braces the flange plates in a most effective manner and the danger of buckling and'bending is thus effectually avoided.
  • Fig. 1 is a perspective view of aplate girder with plane flange plates and Fig. 2 is a similar view of a girder with corrugated flange plates, the parts being shown unassembled.
  • the middle web is formed by a thin corrugated sheet metal strip at having its lateral edges provided with tongues b deflected at right angles to said strip a.
  • plane flange plates 0 being fixed to the tongues b by riveting or welding.
  • gle strips e, e are riveted or otherwise secured to both sides of the middle web (1 so as to laterally project above and below it, respectively, an the flange plates f are secured .by riveting or otherwise to the outer surfaces of the angle strips e.
  • the girder is reinforced by means of strong plates h extending between and fixedto the angle stri s on each side of the middle web.
  • girders which at least artially consist of wood, cellulose or other artificial products. According to the constructional material employed, the various parts of the girder can also be united with each other by gluing or bolting or in similar manner.
  • I claim 1 In a composite sheet metal girder in combination, two sheet metal plates disposed parallel, a separate sheet metal web bent zi zag fashion arranged intermediate said plates and angle strips fixed to said web and to said plates, respectively.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

Patented Oct. 26,1926.
UNITED STATES PATENT OFFICE.
CLAUDE DORNIER, OI FRIEDBIOESHAIEN, GERMANY, ASBIGNOR TO THE FIRE: LUI'TSCHIFFBAU ZEPPELIN GESELLBCHAFT MIT BESCKBANKTEB HAI'TUNG, OI
FRIEDBICHSHAFEN, GERMANY.
LIGHT-WEIGHT GIRDEB.
Application illed June 88, 1820, Serial No. 392,583, and in Germany In 4, 1917.
(GRANTED UNDER- m PROVISIONS 01' THE ACT OF KARO! 3, 1921, 41 STATE. L, 1818.)
My invention refers to girders which combine small weight with reat strength and can be manufactured witfi ease, so that they are suitable for wholesale manufacture more especially for the purpose of air craft construction.
In the novel girder, which is preferably made of light metal, a middle web of sheet metal bent in zigzaa fashion has its longitudinal edges rigidly fixed to flange plates extending vertically in regard to the surface of the middle web. The width of the flange plates does not materially exceed the depth of the corrugations formed in the middle web which is thus easily accessible from both sides and in this way distinguishes favorably from girders whose webs consist of a row of adjoining cells. Besides, it braces the flange plates in a most effective manner and the danger of buckling and'bending is thus effectually avoided. I
The drawings attached to this specification and forming part thereof illustrate two modifications of a girder embodying my invention by way of example.
Fig. 1 is a perspective view of aplate girder with plane flange plates and Fig. 2 is a similar view of a girder with corrugated flange plates, the parts being shown unassembled. In the modification'shown in Fig. 1 the middle web is formed by a thin corrugated sheet metal strip at having its lateral edges provided with tongues b deflected at right angles to said strip a. plane flange plates 0 being fixed to the tongues b by riveting or welding. 1
In the modification illustrated in Flg. 2
(I is the zigzag-shaped sheet metal strip forming the middle web. f, 'f are the top and bottom flange plates each of which is braced by two longitudinal grooves g. An-
gle strips e, e are riveted or otherwise secured to both sides of the middle web (1 so as to laterally project above and below it, respectively, an the flange plates f are secured .by riveting or otherwise to the outer surfaces of the angle strips e. At the ends the girder is reinforced by means of strong plates h extending between and fixedto the angle stri s on each side of the middle web.
Prefera 1y, thin steel plate or light metal sheetis employed. but it is also possible to produce girders which at least artially consist of wood, cellulose or other artificial products. According to the constructional material employed, the various parts of the girder can also be united with each other by gluing or bolting or in similar manner.
I wish it to be understood that I do not desire to be limited to the exactdetails of construction shown and described, for obvious. modifications will occur to a person skilled in the art.
I claim 1. In a composite sheet metal girder in combination, two sheet metal plates disposed parallel, a separate sheet metal web bent zi zag fashion arranged intermediate said plates and angle strips fixed to said web and to said plates, respectively.
In testimony whereof I. afiix signature.
CLAUDE DORNIER.
US392563A 1917-05-04 1920-06-23 Light-weight girder Expired - Lifetime US1604151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1604151X 1917-05-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997262A (en) * 1960-01-21 1961-08-22 Gen Dynamics Corp Aircraft wing structure
US3495816A (en) * 1967-06-22 1970-02-17 John Stuart Lyle Variable rate spring reinforced structural member
EP0009975A1 (en) * 1978-10-04 1980-04-16 Ford Motor Company Limited Load support structural members and motor vehicle frames including such members
US4769968A (en) * 1987-03-05 1988-09-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Truss-core corrugation for compressive loads
US6851246B2 (en) * 2000-01-17 2005-02-08 Faurecia Industries Structural member comprising a body and reinforcing ribs and corresponding motor vehicle
US20080006000A1 (en) * 2006-07-05 2008-01-10 Sukup Manufacturing Company Support for a grain bin floor and method of making the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997262A (en) * 1960-01-21 1961-08-22 Gen Dynamics Corp Aircraft wing structure
US3495816A (en) * 1967-06-22 1970-02-17 John Stuart Lyle Variable rate spring reinforced structural member
EP0009975A1 (en) * 1978-10-04 1980-04-16 Ford Motor Company Limited Load support structural members and motor vehicle frames including such members
US4386792A (en) * 1978-10-04 1983-06-07 Ford Motor Company Fabricated load support structural member
US4769968A (en) * 1987-03-05 1988-09-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Truss-core corrugation for compressive loads
US6851246B2 (en) * 2000-01-17 2005-02-08 Faurecia Industries Structural member comprising a body and reinforcing ribs and corresponding motor vehicle
US20080006000A1 (en) * 2006-07-05 2008-01-10 Sukup Manufacturing Company Support for a grain bin floor and method of making the same
US7845129B2 (en) * 2006-07-05 2010-12-07 Sukup Manufacturing Company Support for a grain bin floor

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