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Publication numberUS3907445 A
Publication typeGrant
Publication dateSep 23, 1975
Filing dateJan 6, 1975
Priority dateJan 6, 1975
Publication numberUS 3907445 A, US 3907445A, US-A-3907445, US3907445 A, US3907445A
InventorsWendt Alan C
Original AssigneeUnited States Gypsum Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Self-aligning joist hanger for structural steel framing
US 3907445 A
Abstract
A hanger for mounting a hollow metal joist perpendicular to headers and the like is disclosed. The hanger has a U-shaped top flange for hanging the hanger over a header and the hanger also having a backplate with side flanges projected outward therefrom and with the side flanges each being divided from the backplate outward at a point intermediate to the top and bottom thereof with the upper portion of each of the two side flanges being spaced together in order that the hollow metal joist may rest on the upper portion of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges. The side flanges are not connected other than by the backplate thereby enabling them to accommodate any height joist.
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Description  (OCR text may contain errors)

[ Sept. 23, 1975 1 1 SELF-ALIGNING JOIST HANGER FOR STRUCTURAL STEEL FRAMING [75] Inventor: Alan C. Wendt, Harrington. Ill.

[73] Assignee: United States Gypsum Company,

Chicago, Ill.

[22] Filed: Jan. 6, 1975 [21] Appl. No.: 538,698

[52] US. Cl. 403/232; 52/751 [51] Int. Cl. F16B 5/00 [58] Field of Search 403/13, 14, 189, 187, 190,

[56] References Cited UNITED STATES PATENTS 2,700,457 1/1955 Munroe 52/752 X 3,481,635 12/1969 Tracy 52/751 FOREIGN PATENTS OR APPLICATIONS 105.169 6/1924 Switzerland 403/231 Primary ExaminerAndrew V. Kundrat Attorney, Agent, or FirmDonnie Rudd; Stanton T. Hadley; Samuel Kurlandsky [57] ABSTRACT A hanger for mounting a hollow metal joist perpendicular to headers and the like is disclosed. The hanger has a U-shaped top flange for hanging the hanger over a header and the hanger also having a backplate with side flanges projected outward therefrom and with the side flanges each being divided from the backplate outward at a point intermediate to the top and bottom thereof with the upper portion of each of the two side flanges being spaced together in order that the hollow metal joist may rest on the upper portion of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges. The side flanges are not connected other than by the backplate thereby enabling them to accommodate any height oist.

2 Claims, 5 Drawing Figures US Patent Sept. 23,1975 Sheet 1 of 2 3,907,445

US Patent Sept. 23,1975 Sheet 2 of 3 3,907,445

III.

I II

(aw 13 o US Patent Sept. 23,1975 Sheet 3 of3 3,907,445

SELF-ALIGNING JOIST HANGER FOR STRUCTURAL STEEL FRAMING BACKGROUND OF THE INVENTION l. Field of the Invention This invention relates to a hanger for mounting hollow metal joists perpendicular to headers and the like. The hanger has a U-shaped top flange for hanging the hanger on the header and a backplate attached to the top flange with the sides of the backplate bent outward to form side flanges with the top portions of the side flanges spaced closer together to engage the upper portion of the hollow metal joist and the remaining side flanges used for attaching to thejoist to hold it in place.

2. Description of the Prior Art Many types of metal hangers exist for attachinghollow metal joists perpendicular to headers. These prior hangers, however, seem to be divided into two different design classes. The first such class is one in which the hangers have a U-shaped lip for hanging the hanger with side flanges terminating in a saddle arrangement whereupon the joist sits in the saddle while the side flanges are being attached to the joist. This type of hanger has one inherent difficulty. It will accommodate only one given size of joist if the top of the joist is to match the top of the header. in other words, if the joist has a height greater than that of the header, or if different height joists are used, then one size hanger cannot be used if the object is to have the top of the joist in the same plane with the top of the header.

The other type of basic design for a hanger is one having a U-shaped top flange for hanging thev hanger with a backplate depending therefrom and with the sides of the backplate bent outward to form two parallel side flanges, unconnected except through the backplate, for attaching to the joist. While this type of hanger will accommodate any height joist, it does have one deficiency with respect to installation. The deficiency is that if one person is to install the joist and attach it to the header, then the installer must support the weight of the joist at its exact location while he goes about drilling and attaching the joist to the hanger. Small errors in this operation provide very poor alignment thus demonstrating the inherent disadvantage of this type of hanger. Prior hangers, therefore, all have disadvantages which have been overcome by the new and novel design of the present invention.

SUMMARY OF THETNVENTION It is an object of this invention to provide a hanger for mounting hollow metal joists perpendicular to headers and the like.

It is a further object of this invention to provide a hanger for mounting hollow metal joists perpendicular to headers and the like whereby the hanger will accommodate any height of joist.

It is still another object of this invention to provide a hanger for mounting hollow metal joists perpendicular to headers and the like wherein one installer can utilize the hanger to obtain exact alignment of the metal joist with respect to the header.

It is also an object of this invention to provide a method for making a hanger and a method for attaching a joist perpendicular to a hanger.

The objects of this invention are accomplished in a hanger for mounting hollow metal joists perpendicular to headers and tilt; like. including a U-shaped top flange for hanging the hanger, and a backplate suspended from the hanger with the side flanges projecting outward from the backplate for connection to a joist, by the improvement comprising: the side flanges each divided from the backplate outward at a point intermediate to the top and bottom thereof thereby forming a top and bottom portion of the side flanges, and the spacing of the top portions of the side flanges closer together, wherein said side flanges are unconnected except by the backplate thereby enabling them to accommodate any height joist and whereby a joist to be attached to the side-flanges is supported by the spaced together top portions of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges. If desired, an additionally improved, from the standpoint of installation, design includes the one in which the central portion of each side flange is eliminated. Additionally, the design may include that in which the bottom portion of one side flange is eliminated or placed in the same plane as the plane of the backplate since that portion is not needed if a C-shaped joist is being mounted. This is not preferable, however, since this restricts the adaptability of the hanger and even with C-shaped joists limits the joist installation to only one direction. A

The objects of this invention are also accomplished by a method for producing a hanger for mounting hollow metal joists perpendicular to headers and the like, said method comprising: forming the top of a backplate into a U-shaped flange for hanging the hanger; dividing the sides of the remaining portion of the backplate along lines imtermediate to the top and bottom thereof; bending the sides of the backplate outward to form side flanges; and spacing the top portions of the backplate closer together than the bottom portions of the backplate in order that the inner upper portion of a hollow metal joist may rest on the spaced together top portions of the side flanges. As discussed above with relation to the hanger, the method may additionally consist of the removal of a central portion of the side flanges either prior to or after the side flanges are formed by bending outward the backplate. Additionally, the hanger may be used to mount C-shaped metal joists when the method includes either the elimination of the bottom portion of one of the side flanges or else the leaving of the bottom portion of one of the side flanges in the same plane as the plane of the backplate to act as an.

extension thereof, although both of these alternatives have the problems hereinabove discussed with relation to the hanger.

The objects of this invention are additionally accomplished by a method for attaching a hollow metal joist perpendicular to a header comprising: hanging a hanger over the header; resting a joist on spaced together upper portions of the hanger; and attaching the joist to at least one of two spaced together bottom portions of the hanger, the bottom portions being on the outside of the joist.

The invention herein described has certain distinct advantages over any of the hangers hereinbefore known. The inward spaced top portions of the side flanges provide an insert for engaging the hollow metal joist and keeping the hanger attached thereto while it is being attached to the header. Most importantly, however, the upper portion of the flanges provides a convenient portion of the hanger for the inside upper portion of the joist to rest upon while in perfect alignment with the header to which it is being attached. An additional advantage of the hanger is that it will accommodate any height of joist since the hanging of the joist is only at the top thereof and the bottom extension of the joist is immaterial to its suspension with relation to the header. A still further distinct advantage of this hanger is the fact that the inner disposed portions of the side flanges provide a support for the joist in addition to the supporting screws or other supporting attachments. This new design for a hanger accordingly represents a significant advancement in the design of hangers used in attaching hollow metal joists perpendicular to headers.

BRIEF DESCRIPTION OF THE DRAWINGS The attached drawings may be used to further describe, but not to limit, this invention. In the drawings:

FIG. 1 is a perspective view of the hanger of this invention with the hollow metal joist and header in phantom;

FIG. 2 is a perspective view of an embodiment of the hanger of this invention wherein a portion of the side flange has been removed and wherein the top portion of the side flanges is bent inward to more readily accommodate the metal joist;

FIG. 3 is a top view of the hanger of this invention with the metal joist and header in phantom;

FIG. 4 is a front view of the hanger of this invention with the hollow metal joist and header in phantom; and

FIG. 5 is a perspective view of an alternative embodiment of the hanger of this invention used to accommodate a header over a door with the stud and joist in phantom.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to FIG. 1, the numeral is used to illustrate the top flange of the hanger. This top portion is terminated by downward section 11 which gives the U-shape to the hanger. The hanger preferably has side flanges l2 and 13, generally in parallel planes formed by bending outward the backplate 14, although these side flanges may be independently attached instead of being a bent extension of the backplate. Also, the bottom of one of the side flanges may be eliminated or left in the plane of the backplate although this embodiment is not shown because it is of more limited use as hereinbefore discussed. The side flanges are divided, leaving upper portions 15 and 16, respectively, for permitting additional closer together spacing. The upper portions 15 and 16 are then bent inward so that they may be inserted inside the hollow metal joist. For the purpose of illustration, a header 17 is shown in phantom as well as a hollow metal joist 18 being shown in phantom. The joist shown is of the C shape although this invention fully contemplates joists of rectangular cross-section.

The inside upper portion of the side flanges provides a convenient support for the inside upper portion of the hollow metal joist to rest upon. This supports the metal joist while it is being attached to the hanger. The hanger may be attached to the header by any wellknown method, such as screws 19 being placed through a suitable opening, and the hanger may also be attached to the metal joist by any conventional method, such as screws 19 being attached in a suitable manner such as through holes 20 into the metal joist. Obviously, if a C-shaped joist is used, only one flange is attached to the joist. It must be understood, however,

that any of the well-known and accepted methods of attachment may be used and the attachment need not be limited to the screw-type arrangement.

It is particularly desirable in this invention to remove portions 21 and 22 of the center of flanges l2 and 13 in order to make the hanger more receptive to the hollow metal joist. Likewise, it is highly desireable to bend inward the end portions 23 and 24 of the upper portion of the side flanges in order that they may more readily receive the hollow metal joist.

FIG. 5 shows an alternative embodiment of this invention. In FIG. 5, the hanger 26 is shown with a bent down portion 27 forming a U-shaped hanger. The backplate 28 is bent upward to form side flanges 29 and 30. Portions of the side flanges are severed to form upper portions 31 and 32 to accommodate the inside of metal joist 33, shown in phantom. The U-shaped portion of the hanger sits over a stud 34, also shown in phantom. Appropriate attachments are made through holes 35 and 36 to attach the joist and the stud to the hanger. This particular embodiment of this invention is useful when the joist is to be used for a facing or when the hanger or any portion of the stud or joist cannot extend outward, such as when the hanger is used in attaching a joist to a stud to form the header for a door.

In utilization of the hanger, the hanger may either first be placed on the header and attached thereto with the metal joist then being slipped onto the hanger and supported thereby while it is being attached to the hanger or else the hanger may be inserted in the metal joist and attached thereto and then the hanger hung on the header and attached to it. In either of the installation methods, one person may easily do the entire attachment procedure without assistance from another individual.

Although many different designs and modifications are within the scope of this claimed invention to add versatility to the particular usage, the attached drawings and the description pertaining thereto constitute the preferred embodiments of this invention.

This invention is a remarkable improvement in hangers for use in mounting hollow metal joists perpendicular to headers and the like. The hanger provides an exceptional savings in utilization of manpower as well as providing an adaptable hanger for use with any height metal joist. This invention also provides a hanger that can provide exact alignment of the joist with the header in all installations. In addition, this invention provides a hanger having increased supporting ability and not relying entirely upon screws or the like to overcome the shear created by weight on the joist.

Having fully described this new and novel invention the following is claimed:

1. In a hanger for mounting hollow metal joists perpendicular to headers and the like, including a U- shaped top flange for hanging the hanger, and a backplate suspended from the hanger with side flanges projecting outward from the backplate for connection to a joist, the improvement comprising: the side flanges each divided from the backplate outward at a point intermediate to the top and bottom thereof thereby forming a spaced top and bottom portions of the side flanges, and with the distance between the top portions of the side flanges being less than the distance between the bottom portions of the side flanges, wherein said side flanges are unconnected except by the backplate to define a channel open at both ends thereby enabling them to accommodate any height joist, and whereby a tion of at least one of the side flanges. joist to be attached to the side flanges is supported by 2. The improvement as in claim 1 wherein a central the spaced together top portions of the side flanges portion of each side flange is eliminated. while the joist is being attached to the remaining por- UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION PATENT NO. 3, 9 7 5 DATED Sept 23 1975 |NVENTOR(S) Alan C Wendt:

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Claim 1, Column 4, Line 62 "a" should be deleted.

Signed and Scaled this tenth Day of February 1976 [SEAL] A ttest;

RUTH C. MASON C. MARSHALL DANN AIIPSII'NX ff Commissioner oflarems and Trademarks

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2700457 *Sep 19, 1951Jan 25, 1955Moraine Box CompanyBox joint member
US3481635 *Apr 3, 1968Dec 2, 1969Intern Enterprises IncUniversal roof bracket
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4318628 *Oct 1, 1979Mar 9, 1982International W Systems S.R.L.Connecting device for construction panels
US4462629 *Aug 23, 1982Jul 31, 1984Hitachi, Ltd.Construction of car structure
US4498801 *Sep 23, 1982Feb 12, 1985Simpson Strong-Tie Company, Inc.Ridge rafter connector
US4893961 *Jun 5, 1989Jan 16, 1990Trus Joist CorporationJoist hanger
US5394668 *Feb 12, 1993Mar 7, 1995Herman Miller, Inc.Panel extension assembly
US5437137 *Oct 1, 1993Aug 1, 1995Land And Seas Business Corp., Inc.Roof edge anchor
US5819956 *Feb 25, 1997Oct 13, 1998Sigma-Aldrich CompanyRack for electrical equipment
US6006925 *Sep 10, 1998Dec 28, 1999Hendry Mechanical WorksEquipment rack system
US6230467Feb 18, 1999May 15, 2001Simpson Strong-Tie Co., Inc.Steel joist hanger
US6427416May 7, 2001Aug 6, 2002Aegis Metal Framing LlcConnector plate
US6430890Mar 28, 2000Aug 13, 2002Dietrich Industries, Inc.Web stiffener
US6481582Jun 4, 2001Nov 19, 2002Cooper Technologies CompanyRack
US6517174Apr 27, 2001Feb 11, 2003Hendry Telephone ProductsEquipment mounting racks and cabinets
US6527351Jun 23, 1998Mar 4, 2003Hendry Mechanical WorksEquipment mounting racks and cabinets
US6561602Oct 13, 2000May 13, 2003Hendry Mechanical WorksEquipment mounting racks and cabinets
US6718724 *Jul 13, 2001Apr 13, 2004James L. ThomasTruss insert track system
US7739850Jun 15, 2007Jun 22, 2010Dietrich Industries, Inc.Building construction components
US8720155 *Oct 23, 2009May 13, 2014Glenn RobellMethod and system of framing components and hangers used in a structural interface
US8746402 *Aug 8, 2011Jun 10, 2014Steven Christopher Nichols, Jr.Devices, systems and methods relating to fall protection anchorage for over head and roofing installation featuring evacuation from service
US20120031700 *Aug 8, 2011Feb 9, 2012Nichols Jr Steven ChristopherDevices, systems and methods relating to fall protection anchorage for over head and roofing installation featuring evacuation from service
US20140130441 *May 28, 2012May 15, 2014Nippon Steel & Sumitomo Metal CorporationConnecting fitting, frame provided with same, and building using frame
US20140305978 *Jan 21, 2014Oct 16, 2014Vincent Bernard AustrieRack System
WO2000049239A1Feb 17, 2000Aug 24, 2000Simpson Strong Tie Co IncSteel joist hanger
WO2007070924A1 *Dec 12, 2006Jun 28, 2007Onesteel Trading Pty LtdConnector
Classifications
U.S. Classification403/191, 403/232.1
International ClassificationE04B1/26
Cooperative ClassificationE04B1/2612
European ClassificationE04B1/26B2
Legal Events
DateCodeEventDescription
Dec 1, 1998ASAssignment
Owner name: FIRST NATIONAL BANK OF CHICAGO, AS AGENT, THE, ILL
Free format text: SECURITY AGREEMENT;ASSIGNOR:UNIMAST, INCORPORATED;REEL/FRAME:009605/0579
Effective date: 19981124
Jul 31, 1989ASAssignment
Owner name: ROCKEFELLER GROUP CAPITAL CORPORATION, A CORP. OF
Free format text: SECURITY INTEREST;ASSIGNOR:UNIMAST INCORPORATED;REEL/FRAME:005203/0884
Effective date: 19890630
Owner name: UNIMAST INCORPORATED, 325 STAHL ROAD, FREMONT, OHI
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNITED STATES GYPSUM COMPANY, A DE. CORP.;REEL/FRAME:005164/0043
Jul 31, 1989AS06Security interest
Owner name: ROCKEFELLER GROUP CAPITAL CORPORATION, A CORP. OF
Owner name: UNIMAST INCORPORATED
Effective date: 19890630
Jul 31, 1989AS02Assignment of assignor's interest
Owner name: UNIMAST INCORPORATED, 325 STAHL ROAD, FREMONT, OHI
Owner name: UNITED STATES GYPSUM COMPANY, A DE. CORP.
Effective date: 19890630