Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1989834 A
Publication typeGrant
Publication dateFeb 5, 1935
Filing dateNov 25, 1931
Priority dateNov 25, 1931
Publication numberUS 1989834 A, US 1989834A, US-A-1989834, US1989834 A, US1989834A
InventorsWatson Charles G
Original AssigneeWatson Charles G
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of reenforcing beams
US 1989834 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Q? g? ArroRNEg Patented Feb. 5, 1935 UNITED STATES PATENT OFFICE 1,989,834 'ME'rnon F ansm onome BEAMS I Charles G. Watson, Youngstown, Ohio Application November 25, 1931, Serial No. 571,291

out resorting to the dismantling of the structures of which the beams are a part.

A primary object of the invention .is to provide a novel reenforced beam for use as a structural member and a novel method of reenforcing such beams.

To the accomplishment of this and-related ends, the invention, then, consists of the means hereinafter fully described and particularly pointed out in the claim, the annexed drawing and the following description setting forth in detail certain forms of construction embodying the invention, such disclosed means constituting, however, but a'tew of the various forms in which the principle of the invention may be used.

In'said annexed drawing:

. Fig. 1 isa cross-sectional view of a preferred form of the reenforced beam made in accordance 30 with my invention; and Fig. 2 is a cross-sectional view of a modified formof reenforced beam'made in accordance with the invention.

As will be seen from the drawing, each beam comprises an I-beam of usual cross-section, havinto the form shown to provide portions 2:; which are in contact with the upper flange 1a of the beam, and portions 2b which extend to the outer edges of the lower flange 1b oi the beam. Additional reenforcement for the I-beam may be provided by a plate or element 3 which is placed 5 below the lower flange or base of the beam. With the various parts thus assembled, portions of the plates 2 and 3 are made integral with the flanges of the I-beam and with each other as by welding, as indicated in the drawing. It will bereadily seen that the welding operations produce a rigid unitary beam having greater strength than the I-beam itself.

In the form of the invention illustrated in Fig. 2, the I-beam is reeniorced by means of plates 4 which are bent intermediate their edges to form diverging portions 40, which extend to the outer edges of the flanges of the beam. The edges of the plates are made integral with the flanges of the beam as by welding, and the plates are secured to the web of the beam as by spot-welding the plates thereto at longitudinally spaced points.

Other modes of applying the principle of my invention may be employed instead of the ones explained, change being made as regards the constructions herein disclosed, provided the means stated by the following claim or the equivalents of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

The method of strengthening a bridge, or the like, supported on I beams to which access may be had, which comprises welding an edge of a steel plate integral with one edge of a lower flange on a supporting beam, forcing a section of said plate into contact with the web of said beam and welding the opposite edge of said plate integral with the upper flange of said beam.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2985121 *Feb 5, 1957May 23, 1961United States Steel CorpMetallic skewback for furnace roofs
US3232394 *Aug 7, 1961Feb 1, 1966Halle Roger JReinforced beam and column joint
US3387424 *Jan 17, 1967Jun 11, 1968Specialties ConstCooling tower screen
US4660491 *Jan 23, 1986Apr 28, 1987Hitachi Zosen CorporationDouble hull ship without reinforcing transverse members between the inner and outer hull platings
US4674430 *Jan 31, 1986Jun 23, 1987Hitachi Zosen CorporationShip without transverse reinforcing members between the inner and outer hull plating
US4793115 *Nov 12, 1987Dec 27, 1988Blumcraft Of PittsburghMethod of cladding metal extrusions and product obtained therefrom
US5379557 *Oct 8, 1993Jan 10, 1995Rodman W. KotterArchitectual panel system for geodesic-like structures
US5462144 *Apr 13, 1994Oct 31, 1995Gec Alsthom Transport SaImpact-absorber device
US5487199 *Apr 4, 1994Jan 30, 1996Nelson; JohnVandalism prevention device for highway bridges
US5491309 *Oct 4, 1993Feb 13, 1996Quilite International Limited Liability CompanyAcoustical panel system
US5579699 *Apr 26, 1994Dec 3, 1996Gec Alsthom Transport SaImpact-absorber devices, impact-absorption method, and framework and vehicle including such impact-absorber devices
US5641950 *Aug 23, 1995Jun 24, 1997Quilite International Limited Liability CompanyAcoustical panel system
US5660116 *May 9, 1996Aug 26, 1997Gec Alsthom Transport SaImpact-absorber devices, impact-absorption method, and framework and vehicle including such impact-aborber devices
US5715757 *Feb 19, 1997Feb 10, 1998Gec Alsthom Transport SaImpact-absorber devices, impact-absorption method, and framework and vehicle including such impact-absorber devices
US6758134 *May 23, 2003Jul 6, 2004Metso Paper, Inc.Method for rebuilding a calender
DE19502174A1 *Jan 25, 1995Aug 31, 1995Wolfgang TaenzerComposite girders for construction of buildings etc.
EP0293789A1 *May 28, 1988Dec 7, 1988Scheffer Maschinen- u. Apparatebau GmbHCrane with box section
EP0420084A1 *Sep 22, 1990Apr 3, 1991Scheffer Maschinen- u. Apparatebau GmbHBox-girder for a crane girder
U.S. Classification29/897.1, 14/74.5, 52/634, 105/416, 29/402.16
International ClassificationE04C3/04, E04C3/07
Cooperative ClassificationE04C2003/0413, E04C2003/0439, E04C2003/0452, E04C3/07, E04C2003/043
European ClassificationE04C3/07