US3525495A

US3525495A - Hanger assembly for suspended concrete forms

Info

Publication number: US3525495A
Application number: US734472A
Authority: US
Inventors: Louis Philippe Brosseau
Original assignee: Individual
Current assignee: Individual
Priority date: 1968-06-04
Filing date: 1968-06-04
Publication date: 1970-08-25
Anticipated expiration: 1987-08-25

Description

HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMS Filed June 4, 1968 Aug. 25, 1970 L. P. BROSSEAU.

2 Sheets-Sheet 1 M E M n Aug. 25, 1970 3,525,495

HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMS Filed June 4., 1968 L. P. BROSSEAU 2 Sheets-Sheet 2 Mum r01? f? 5/? 05 S E A l/ Aria/Ma United States Patent 3,525,495 HANGER ASSEMBLY FOR SUSPENDED CONCRETE FORMS Louis Philippe Brosseau, 7600 Place dAubigny, Ville dAnjou, 5 Montreal, Quebec, Canada Filed June 4, 1968, Ser. No. 734,472 Int. Cl. E04g 17/00 US. Cl. 248-327 7 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION Field of the invention The present invention relates to a hanger assembly intended to rest on the top of a beam, usually a metal I-beam, for supporting a concrete form for the molding of concrete floor slabs or the like.

Description of the prior art There presently exist hanger assemblies of this type generally formed of a pair of suspension members rigidly connected together by a transverse tie rod intended to rest on and overhang from the lateral edges of the top flange on an I-beam. Each suspension member is provided with an opening through which a bolt vertically extends, said bolt also extending through one edge of the form which can then hang from the top flange of the I-beam.

A major drawback of the above-mentioned hanger assembly resides in that each suspension member is formed with a single opening which is vertical and which therefore only provides one single direction for the extension of the bolt and nut assembly adapted to support the concrete form. However, in some cases it is necessary that the bolts, intended to support the form, extend obliquely rather than vertically and in such cases it is necessary to change the corresponding suspension member or members and replace it by a member formed with an oblique opening corresponding to the desired direction of the bolts. Usually, this direction is 45. This means that the construction contractor has to carry in stock, a large supply of hanger assemblies since the suspension members may both have 90 openings, or both 45 openings or one a 90 and one a 45 opening. In view of the multiplicity of assemblies to be provided, the manufacturing cost is higher, deliveries are sometimes delayed and there is also possibilities of errors in the delivery, the latter being particularly important in view of the costly delays that they may cause during construction.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a hanger assembly which is universal with respect to the orientation of the supporting bolts, that is, each suspension member is so formed that the said supporting bolts may selectively be disposed either vertically or at 45 More specifically,. an object of the invention resides in the provision of a three-part hanger assembly of the aforementioned type that comprises first means defining a vertical guiding and holding opening and second means defining an inclined guiding and holding opening for the selective extension therethrough of a vertical or obliquely inclined form-supporting bolt, the inclination being preterably at 45.

With an arrangement according to the present invention, it will thus be appreciated that the hanger assembly may inditferently be used for a suspension at and one at 45, for two suspensions at 90 or for two suspensions at 45 that a hanger assembly of a single type will be required for any type of suspension, greatly reducing any errors or delays during construction. For the supplier, it will mean that only one type of assembly need be carried thus eliminating any error in delivery. Finally, for the manufacturer, this will mean that only one type of hanger assembly need be manufactured thus increasing production and delivery and reducing cost.

BRIEF DESCRIPTON OF THE DRAWINGS A preferred embodiment of the invention will now be described with reference to the appended drawings wherein:

FIG. 1 is a general perspective view of the hanger assembly of the invention as shown mounted on the top flange of an I-beam and illustrating the two most general and common ways of inserting the supporting bolts through the suspension members;

FIG. .2 is a perspective view of a suspension member, showing the possibility of selecting one of two directions for the insertion of the supporting bolts;

FIG. 3 is a cross-sectional view of a concrete slab molded over an I-beam and in a concrete form held by a hanger assembly according to the present invention; and

FIG. 4 is a blank form from which the suspension member of the invention may be manufactured.

With particular reference to FIGS. 1 and 3, it will be seen that the hanger assembly of the present invention is secured to the top flange 7 of a structural I-beam 9.

The assembly comprises two identical suspension members 1, partly resting on and partly overhanging the lateral edges 11 of the flange 7 and a connecting rod 3 joining the two suspension members together. The overhanging portions 29 of members 1 are formed with two passages, a vertical passage 13 and an oblique passage 15, defining two preferred directions for the selective insertion of a supporting bolt 17. In the usual manner, the bolt 17 passes through the beam 21 and bottom plywood sheet 23 of the concrete form before extending through either the passage 13 or 15 of the suspension member 1. A washer 27 is then slid over the threaded end of the bolt 17 followed by a tightening nut 19 so that the bolt 17 may be removed after the concrete has set.

In the illustration of FIGS. 1 and 3, one bolt extends vertically while the other bolt extends at 45 which are the two preferred directions of orientation of the bolts. It will of course be understood that in some cases, the orientation of both bolts may be vertical or both may be in clined at 45 as aforesaid.

FIG. 3 illustrates a cross-section through the I-beam 9, the

concrete form

21, 23 and the concrete slab 4. The illustration is the same as that of FIG. 1 with the addition of the concrete slab 4.

The perspective view of FIG. 2 more clearly illustrates the overhanging or second portion 29 of a suspension member 1. It will be seen that this overhanging portion defines a vertical passage 13 and an oblique passage 15 generally extending at 45. Inwardly of overhanging portion 29 is an upstanding first portion 31, generally corrugated for strength purposes and resting, along its bottom edge, on the top flange 7 of beam 9 along the lateral edges thereof. This first portion 31 is actually formed of a pair of spaced upright sidewalls 35 between which the end 37 of the connecting tie rod 3 is received to be welded to the said sidewalls 35. The latter are bent, at

3 39, outwardly to define laterally projecting flanges 41 provided as stabilizing means for the suspension members 1. The two selective directions of orientation of the bolts are emphasized by the illustration of the said bolts, in

dotted lines.

Preferably, the suspension member 1 may be made of a rigid metal plate folded from a blank produced by a combined stamping and punching operation or by any other suitable method. Such a blank is illustrated in FIG. 4.

The blank generally comprises a pair of rectangular wing-like side portions 45 and a middle portion 47, the latter having a central part 48 projecting upwardly above portions 45 and having two ear-like protrusions 49. The lower edge of middle portion 47 is cut out to define a rectangular opening 51 capped by an elongated slot 53. The blank is then bent 180 about a vertical central line through central part 47, ensuring that the sidewalls 35 (FIG. 2) are spaced a distance generally equal to the diameter of the connecting rod 3. Bars 49 are then bent inward as shown in FIG. 2 and the outward ends of the rectangular wing-like portions 45 bent outward to define the aforesaid flanges 41. Furthermore, flaps 55 (FIG. 4) defined by the rectangular opening 51 and the elongated slot 53, are bent inward to define a vertical wall intended to stand in alignment with the edge 11 (see FIG. 1) of the top flange 7 of beam 9.

In this manner (see FIGS. 2 and 4), the vertical passage 13 is defined by the bight of the U-shaped element formed in bending the blank of FIG. 4, the said bight also forming a top horizontal opening 14 for the seating of a washer 27 and a bottom opening 16 for the outlet of the bolt 17.

The legs 18 of the U-shaped element have upper inclined edges 20 intended for the seating of a washer 27 While the lower edges of the legs 18 merge with the bottom opening 16 to thus define the inclined passage 15 for a bolt 17.

Transverse wall 43, formed by the ears 49 has a top edge that closes up the horizontal opening 14.

Referring back to FIG. 4, suitable guide lines 54 may be provided to facilitate folding.

I claim:

1. A hanger assembly for supporting concrete forms from the top of a beam or other supporting surface, said assembly comprising:

(a) a pair of suspension members resting on the top of said beam, each member having means thereon for receiving in preselected directions a suspension bolt for supporting said concrete form;

(b) a rod connecting said supporting members;

(c) said suspension members each being made of a bent metal plate and each being provided with two openings corresponding to said preselected directions, each opening being adapted to receive said suspension bolt in one of said preselected directions;

(d) wherein one of said openings provides a vertical passage for said suspension bolt and said other opening provides a second passage for said suspension bolt, said second passage being inclined at an angle of 45 with respect to the vertical passage;

(e) each suspension member having a cantilever head portion with respect to the edge of the top surface of said beam, said head portion defining said openings; a middle portion having a pair of spaced side walls to which said connecting rod is fixed, and two outwardly projecting back flanges perpendicular respective to said side Walls and adapted to stabilize said suspension member on said top surface.

2. A concrete form supporting assembly comprising:

(a) a structural beam having a substantially horizontal (b) a pair of suspension members each formed of a first portion resting on said beam top and merging into a second portion overhanging from one lateral edge of said beam top;

(0) first means in said second portion of each suspension member defining a vertical guiding and holding passage for the vertical extension therethrough of a form-supporting bolt;

(d) second means in said second portion of each suspension member defining an inclined guiding and holding passage for the inclined extension therethrough of a form-supporting bolt;

(e) form-supporting bolts extending through said guiding and holding passages of said supporting members, and

(f) an elongated element joining together said first portions of said suspension members over said beam top.

3. An assembly as claimed in claim 2 wherein:

said first portion of each suspension member is a pair of spaced upright walls having lower edges resting on said beam top, up to the adjacent lateral edge thereof;

wherein said second portion is a generally U-shaped element having a bight and two legs projecting therefrom; said legs integrally joining said upright walls;

wherein said first means is defined by said bight; said bight forms a horizontal top opening, forms a lower opening and forms said vertical passage, and

wherein said second means is defined by said legs; said legs form upper inclined edges, form lower edges merging with said bottom opening and form said inclined passage.

4. An assembly as claimed in claim 3, including a transverse Wall extending across said legs at the top of said inclined edges; said wall having an edge thereof closing up said horizontal top opening.

5. An assembly as claimed in claim 3, wherein said spaced upright walls are bent out at right angles at the ends thereof away from said second portion to define stabilizing flanges.

6. An assembly as claimed in claim 3, wherein said elongated elements are rods fixedly secured at the ends thereof between said spaced upright walls of said suspension members.

7. An assembly as claimed in claim 3, wherein said second portion stands, at least partially, at a level above said first portion.

References Cited UNITED STATES PATENTS 1,423,927 7/1922 Falk 28754 1,571,581 2/1926 Fliegelman et a1. 248-300 X 2,985,937 5/1961 Hillberg 25-1315 FOREIGN PATENTS 566,256 4/1958 Belgium. 867,516 5/ 1961 Great Britain.

ROY D. FRAZIER, Primary Examiner J. F. FOSS, Assistant Examiner U.S. Cl. X.R.