|Publication number||US3752512 A|
|Publication date||Aug 14, 1973|
|Filing date||Jan 24, 1972|
|Priority date||Jan 24, 1972|
|Publication number||US 3752512 A, US 3752512A, US-A-3752512, US3752512 A, US3752512A|
|Original Assignee||Simpson Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (30), Classifications (5), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Gilb Simpson Company, San Leandro, Calif.
Filed: Jan. 24, 1972 Appl. No.: 220,041
US. Cl. 287/2094 Int. Cl. F16!) 5/00 Field of Search 287/2094, 20.95, 287/2092 C; 220/62; 229/32 References Cited UNITED STATES PATENTS 2/l904 Eberhardt 287/2094 3/ 1969 Lock 229/32 11] 3,752,512 Aug.-l4, 1973 9/ i965 Schmitt 220/62 5/1962 Findleton 287/2094 ABSTRACT A metal hanger for use in wood frame construction adapted for attachment to a support such as a carrying beam for receiving a joist member. The hanger consists of a back, a pair of sides, a seat and a uniquely folded connecting area connecting the sides and the seat. The seat consists of a single thickness of material and the distance between the bottom of the joist and the bottom of the hanger constitutes no more than a single thickness of said material.
lClaim,7Drawingl1gures 1 SINGLE-THICKNESS SEAT HANGER BACKGROUND OF THE INVENTION It has become general practice in the light, wood frame building construction industry to attach the ceiling joist members to the carrying beams by means of metal hangers. These hangers are formed from a single sheet of flat metal, but in order to obtain the required loading requirements, it has been necessary to bend the material so that in the seat area there is at least a double thickness of material at the edges. This thickening in the seat area causes a problem in sheet rocking of the ceilings. The ceiling sheet rock must bend over each of the lower portions of the hangers causing a bulge in the sheet rock and giving a slight ripple effect to the ceiling. Further, the bending of the sheet rock places a strain on the sheet rock nails and popping of nails or the plaster around the nails in the vicinity of the bulding sheet rock is a common problem.
SUMMARY OF THE INVENTION hanger with a single-thickness seat which meets or exceeds the strength requirements of the Uniform Building Code and other governmental building requirements, uses a minimum amount of material, may be machine mass produced and competitively priced.
BRIEF DESCRIPTION OF THE, DRAWINGS FIG. 1 is an isometric view of the device constructed in accordance with the present invention.
FIG. 2 is a plan view of the sheet material before folding into the shape shown in FIG. 1.
FIG. 3 is a side view of the device shown in FIG. 1.
FIG. 4 is a front view of the device shown in FIG. 1.
FIG. 5 is a top view of the device shown in FIG. 1.
FIG. 6 is a bottom view of the device shown in FIG. 1.
FIG. 7 is an isometric view of the device shown as it would appear in a typical frame building. A portion of the ceiling sheet rock is indicated by the letter D.
BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION The present invention consists of a hanger A adapted for attachment to a support B and adapted for receiving a wood joist C and being constructed from a single flat sheet of bendable material, the sheet being divided into areas constituting a back 2, a pair of sides 3 and 4, a seat 6, and connecting areas 7 and 8 connecting the respective sides and the seat, the improvement comprising: the seat being formed from a single thickness of material by folding the material along a line 9 dividing the back from the seat, the connecting areas being folded to form substantially right angles between the sides and the base with all folded areas occurring at the sides of the hanger; a pair of tabs 13 and 14 formed in the connecting areas and being positioned at the sides and folded to frictionally engage the folded portions of the connecting areas; and each of the sides being formed with an opening 16 and 17 set at staggered elevations above the seat and adapted for receiving fasteners I8 and 19 so as to join the sides to the joist to prevent unfolding of the folded connecting areas. The
- hanger is so constructed that the distance between the bottom of the joist and the bottom of the hanger constitutes no more than a single thickness d of the material.
The construction of the upper portion of the hanger is standard design and consists of an offset 21 formed with openings 22 and 23 through which nails are driven into the carrying beam. Openings 24 and 25 are formed in the upper portion of the back of the hanger through which nails are driven into the carrying beam. Embossments 26 are formed at the bend line 27 to strengthen the hanger.
The manner in which the hanger is constructed may be more easily understood by referring to FIG. 2. In this figure, the material is shown in flat sheet form. The sides are formed by folding degrees along fold lines 28 and 29.
In the connecting areas, portions 31 and 32 are folded up along respective fold lines 33 and 34 portions 36 and 37 are folded down 180 degrees along respective fold lines 38 and 39 and portions 36 and 37 are folded upwardly 90 degrees along fold lines 41 and 42.
After the above folds are made, portions of the sides in the vicinity of arrows 43-50 are drawn in the directions indicated by said arrows so that the lower portions of the sides have edges 52 which extend beyond the leading edge 53 of the upper portion of the sides for additional frictional area in engagement with the flap portions. After the cold drawing, the tab portions are folded down 180 along fold lines 54 and 55.
Note in FIG. 2 that each connecting area is cut at an angle to the sides forming edges 57 and 58.
The tabs are forced into frictional engagement with the connecting areas of the hanger but no other connection of the folded area is required. In order to prevent the seat from unfolding, it is necessary to keep the sides 3 and 4 of the hanger in parallel relationship and in close association with the carried joist member. This may be accomplished by affixing the sides to the beam by nails 18 and 19 or other suitable fasteners. Thus the nails perform their usual function of preventing withdrawal of the joist but their primary function is to coact with the construction of the hanger to prevent failure of the hanger in the seat area due to unfolding of the hanger in the connecting areas. This rather unique fact changes the loads attained in a given series of hangers from the barely adequate range of 5,500 to 6,000 lbs to the very adequate range of 7,500-8,000 lbs.
The hanger thus described may be constructed in various sizesand various gages. As an example, the hanger may be made according to the following specifications: seat l 9/l6 X 2 inches; top flange 1 5/16 X 3% inches, distance from seat to top flange may range from about 5% to 13 '6; inches, material l8-gage galvanized steel.
1. A hanger adapted for attachment to a support and adapted for receiving a wood joist and being constructed from a single flat sheet of bendable material; said sheet being divided into areas constituting a back, a pair of sides, a seat and a connecting area connecting said sides and said seat; the improvement comprising:
3 4 a. said seat being formed from a single thickness of the bottom of the hanger constitutes no more than said material by folding said material along a line a single thickness of said material; and; dividing said back from said seat; f. said sides being folded 90 degrees to said back b. said connecting area being folded to form a subalong fold lines wherein the seat and adjacent side stantially right angle between said sides and said 5 portions are formed by folding each of the connectbase, and all folded areas occurring at the sides of ing areas as follows; said hanger; 1. starting at a first point below and substantially in 0. each connecting area is cut at an angle to said sides alignment with said side fold lines and extending with a pair of tabs formed in said connecting area along a line outwardly to the outer edge of said having their bend lines coextensive with said angle side, fold the portion below said line 180 and being positioned at the sides and folded to fricupwardly; tionally engage the folded portions of said connect- 2. starting at said first point and extending diagoing areas; nally downwardly along a line substantially coind. each of said sides being formed with an opening cident with a line forming the upper edge of said spaced above said seat adapted for receiving a fastab, fold the area below said line 180' tener adapted to join said sides to said joist to predownwardly along said line; and vent unfolding of said folded connecting area; 3. along a line coincident to the edge formed by e. said material being folded and positioned so that said angular cut, bend said tab downwardly 180.
the distance between the bottom of the joist and
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US753053 *||Jul 10, 1903||Feb 23, 1904||Joist-hanger|
|US3036347 *||May 31, 1957||May 29, 1962||Easybow Engineering & Res Co||Joist hanger|
|US3207357 *||Jan 28, 1963||Sep 21, 1965||Schmitt Alois||Foldable container from plastic material|
|US3432085 *||Oct 27, 1967||Mar 11, 1969||Mead Corp||Panel interlocking arrangement|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3945741 *||Jan 6, 1975||Mar 23, 1976||United States Gypsum Company||Self-aligning hanger attachment bracket for structural steel joists|
|US4291996 *||Jul 1, 1980||Sep 29, 1981||Simpson Manufacturing Co., Inc.||Positive nail angling device for metal connectors|
|US4462629 *||Aug 23, 1982||Jul 31, 1984||Hitachi, Ltd.||Construction of car structure|
|US4525971 *||Apr 9, 1984||Jul 2, 1985||Kern Gilbert G||Attachment clip for suspended woodbeam ceiling|
|US4560301 *||Jan 3, 1984||Dec 24, 1985||Simpson Strong-Tie, Company, Inc.||Heavy slope and skew sheet metal hanger and method of making same|
|US4594017 *||Jun 17, 1985||Jun 10, 1986||Altech Industries, Inc.||Joist hanger and blank therefor|
|US4665672 *||Mar 20, 1985||May 19, 1987||Simpson Strong-Tie Company, Inc.||One piece, non-welded holdown|
|US4920725 *||Feb 14, 1989||May 1, 1990||Truswal Systems Corporation||Self-gripping hanger device|
|US5104252 *||Oct 31, 1991||Apr 14, 1992||Simpson Strong-Tie Company, Inc.||Hanger connection|
|US5367853 *||Mar 5, 1993||Nov 29, 1994||Bryan; Robert||Prefabricated deck system|
|US5603580 *||May 30, 1995||Feb 18, 1997||Simpson Strong-Tie Company, Inc.||Positive angle fastener device|
|US6523321||Aug 27, 1999||Feb 25, 2003||Simpson Strong-Tie Company, Inc.||Snap-in hanger|
|US6698971||Mar 3, 2000||Mar 2, 2004||Simpson Strong-Tie Company, Inc.||Wood connector of sheet metal|
|US7334372||Oct 15, 2004||Feb 26, 2008||Simpson Strong-Tie Co., Inc.||Top flange hanger with strengthening embossment|
|US8250827 *||Jun 26, 2006||Aug 28, 2012||Simpson Strong-Tie Company, Inc.||Hanger with gripping tabs|
|US8413402||Apr 9, 2013||Worthington Armstrong Venture||Beam clip with teeth|
|US8424250||Apr 23, 2013||Building Performance Americas Ltd.||Method and apparatus for retrofit connection of roof to wall|
|US9206594||Sep 4, 2014||Dec 8, 2015||Columbia Insurance Company||Hanger with locator tooth|
|US9228338 *||Oct 18, 2006||Jan 5, 2016||Simpson Strong-Tie Company, Inc.||Wide back flange hanger|
|US20040096269 *||Nov 20, 2002||May 20, 2004||George Shahnazarian||Joist hangers|
|US20050287938 *||Oct 18, 2004||Dec 29, 2005||Goei Co. Ltd.||Cutting apparatus with dust discharging|
|US20070119108 *||Nov 14, 2005||May 31, 2007||Downard Evan M||End cap for wood frame construction|
|US20070193194 *||Jan 26, 2007||Aug 23, 2007||Marlows Timber Engineering Ltd.||Joists and Floor Panels containing same|
|US20070294979 *||Jun 26, 2006||Dec 27, 2007||Jin-Jie Lin||Hanger with gripping tabs|
|US20080202057 *||Feb 8, 2008||Aug 28, 2008||Wall Harlin J||Joist and beam hanger for connecting transverse members to a U-shaped edge beam|
|US20080286038 *||May 15, 2007||Nov 20, 2008||Ogden Stephen F||Retrofitting apparatus for reinforcement of roof frame structure|
|US20080308686 *||May 19, 2006||Dec 18, 2008||I.C.M. Group||Connecting Part and Set of Orientable Connecting Parts|
|US20100031601 *||Oct 18, 2006||Feb 11, 2010||Jin-Jie Lin||Wide back flange hanger|
|US20100043310 *||Oct 28, 2009||Feb 25, 2010||Platts Robert E||Method and apparatus for retrofit connection of roof to wall|
|WO1990010765A1 *||Mar 7, 1990||Sep 20, 1990||Charles Edward Harris||Joist hangers|
|U.S. Classification||403/190, 403/232.1|
|Jul 14, 1983||AS||Assignment|
Owner name: SIMPSON STRONG-TIE COMPANY, INC. 1450 DOOLITTLE DR
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SIMPSON MANUFACTURING CO., INC., A CORP. OF CA;REEL/FRAME:004162/0330
Effective date: 19830707