No. 804,451,
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`PATENTED NOW, 14, 1905,
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`A, CARLSON,
`JOST HANGER,
`APPLICATION FILED MAR, 29, J.905.
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`0001
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`Simpson Strong-Tie Company Inc. EX1021
`Simpson Strong-Tie Co. v. Columbia Insurance Co.
`U.S. Patent No. 11,649,626
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`

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`UNITED STATES PATENT OFFICE.
`ALFRED CARLSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALE TO
`LUCIEN L. GERWAIS, OF CHICAGO, ILLINOIS.
`OSHANGER
`
`No. 804,451.
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`Patented Nov. 14, 1905.
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`Specification of Letters Patent.
`Application filed March 29, 1905, Serial No, 252,682,
`their rear edges, which flanges extend toward
`To all, whom, it may concern:
`each other, as shown, and at their upper ends
`Be it known that I, ALFRED CARLSON, a citi
`constitute direct angular extensions of the
`zen of the United States of America, and a
`horizontal bearing webs or flanges 3. As so
`resident of Chicago, in the county of Cook and
`formed a hanger structure is provided having
`State of Illinois, have invented certain new
`and useful Improvements in Joist-Hangers, of
`a maximum degree of strength combined with
`which the following is a specification.
`minimum degree of lightness in that the strain
`This invention relates to hangers adapted to
`upon the parts in actual use is in direct ver
`45
`support the ends of the floor-joists of build
`tical lines, with an entire avoidance of the ob
`ings, and has for its object to provide a sim
`lique torsional strains usual to the ordinary
`hanger construction and requiring a shearing
`ple and efficient structural formation of the
`hanger parts whereby a maximum degree of
`stress to overcome the support afforded by the
`present hanger construction.
`strength with a minimum weight of metal is
`It is within the scope of the present inven
`provided in the hanger, as will hereinafter
`more fully appear and be more particularly
`tion to make the vertical rear flanges 4 of a
`rectangular form, as shown in Figs. 1 and 3,
`pointed out in the claim.
`In the accompanying drawings, Figure 1 is
`or of a triangular form, as shown in Fig. 4,
`a perspective view of a joist-hanger embody
`and as the judgment of the constructor may
`55
`deem best to meet particular circumstances.
`ing the present invention. Fig. 2 is a verti
`Having thus fully described my said inven
`cal sectional elevation of the same at line at a,
`Fig. 3. Fig. 3 is a front elevation. Fig. 4
`tion, what I claim as new, and desire to secure
`by Letters Patent, is
`is a front elevation of a modified form of the
`A wrought-metal joist-hanger, comprising
`hanger.
`a lower horizontal seat or web, triangular side
`Similar numerals of reference indicate like
`webs integral with the lower seat or web
`parts in the several views.
`As represented in the drawings, the joist
`aforesaid and formed with vertical rear flanges
`extending toward each other, and upper hori
`hanger is formed of wrought metal bent upon
`Zontal bearing-webs integral with and consti
`itself in various planes to constitute a lower
`tuting direct angular extensions of said verti
`horizontal web or seat 1, counterpart triangu
`cal flanges, substantially as set forth.
`lar intermediate side webs or wings 2 at right
`Signed at Chicago, Illinois, this 20th day
`angles to the horizontal web 1, and upper
`horizontal webs or bearing-flanges 3, as usual
`of March, 1905.
`in the present type of joist-hangers now in
`general use.
`The material part of the present improve
`ment consists in providing the vertical side
`wings or webs 2 with vertical flanges 4 along
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`ALFRED CARLSON.
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`Witnesses:
`ROBERT BURNS,
`M. H. H.OLMES.
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`O
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`2
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`35
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