US3420560A - Masonry wall joist hanger - Google Patents

Description

Jan. 7 7, 1969 J- E. PFAHNING 3,420,560

MASONRY WALL 'JOIST HANGER Filed May 23, 1966 JEROME PFAHNING United States Patent 3,420,560 MASONRY WALL JOIST HANGER Jerome E. Pfahniug, 3600 N. Roosevelt Blvd., Key West, Fla. 33040 Filed May 23, 1966, Ser. No. 552,286 U.S. Cl. 28720.94 Int. Cl. E04c /16 4 Claims ABSTRACT OF THE DISCLOSURE This invention relates in general to new and useful improvements in building construction components, and more particularly to a novel joist hanger particularly adapted for hanging joists from a masonry wall.

In the past there have been developed many joists hangers suitable for hanging joists from masonry walls. However, all of these joists hangers have the same deficiency in that they are not readily vertically adjustable so as to compensate for variation in height of joists and thereby provide for all of the hung joists having the upper surfaces thereon lying in a common level plane.

In accordance with this invention there is provided an inexpensive joist hanger which is readily adjustable so as to facilitate the vertical adjustment of each hung joist and wherein once the joist hanger is vertically adjusted and is anchored relative to the joist, the vertical position of the joist becomes fixed.

Wit-h the above and other objects in view that will hereinafter appear, the nature of the invention will be more clearly understood by reference to the following detailed description, the appended claims and the several views illustrated in the accompanying drawing.

In the drawing:

FIGURE 1 is a fragmentary top isometric view of a masonry Wall having mounted therein a joist hanger in accordance with this invention.

FIGURE 2 is a transverse sectional view through the wall of FIGURE 1 and shows a joist fixed relative to the wall by means of the joist hanger.

FIGURE 3 is a fragmentary horizontal sectional view taken along the line 3-3 of FIGURE 2.

FIGURE 4 is a fragmentary vertical sectional view taken along the line 44 of FIGURE 3.

FIGURE 5 is a fragmentary top isometric view of another masonry wall showing a slightly modified form of the joist hanger.

FIGURE 6 is a fragmentary top isometric view showing still another form of joist hanger.

FIGURE 7 is a transverse vertical sectional view taken through a masonry wall and shows the details of still another form of joist hanger.

FIGURE 8 is a fragmentary isometric view of a modified form of bearing plate.

Referring now to the drawing in detail, it will be seen that there is illustrated in FIGURE 1 a conventional masonry wall which is generally referred to by the numeral 10. In accordance with conventional construction,

3,420,560 Patented Jan. 7, 1969 the masonry wall 10 is formed of a plurality of blocks 11 which are laid up in courses and bonded together 'by mortar 12. The blocks of certain of the courses are tied together by reinforcement which is generally referred by the numeral 13. The reinforcement 13 includes a pair of longitudinally extending rods 14. The rods 14 are connected together at intervals by means of portions of joist hangers which constituted this invention, the joist hangers being referred to by the numeral 15.

Each joist hanger 15 includes a hanger, which is generally referred to by the numeral 16 and a bearing plate 17. Each hanger 16 includes an anchoring portion which is in the form of a pair of rods 18 which extend transversely across the blocks 11 at regularly spaced intervals and which overlie the reinforcing rods 14. If desired, the rods 18 may be welded to the reinforcing rods 14 and the hangers 16 may be integral components of the reinforcing 13. The joist hangers 15, when welded, will be on predetermined centers.

Each hanger 16 also includes a sling portion which is formed of extensions 20 of the rods 18 and a transverse connecting portion 21.

Referring now to FIGURE 2 in particular, it will be seen that the sling portion is duplicated on opposite sides of the wall 10. This will occur only when the wall 10 is a divider wall. When the wall 10 is an exterior wall, then the hanger 15 will have only a single sling portion projecting from the interior face of the wall.

Referring now to FIGURES 3 and 4 in particular, it will be seen that the bearing plate 17 has struck from the central portion thereof a downwardly projecting tab 22. When properly positioned, the tab 22 faces away from the wall 10 and is locked behind the transverse portion 21 of the associated sling.

A joist 23 is illustrated as being supported from the wall 10 by the joist hanger 15. In order that the joist 23 may be accurately vertically positioned, after it has been positioned on the bearing plate 17, it is adjusted to the proper vertical position and the bearing plate 17 is driven to the right, as viewed in FIGURE 4, until the transverse portion 21 of the sling portion tightly bears against the underside of the bearing plate 17. During this adjustment, it will be apparent that the rod extensions 20 will bend relative to the rods 18 to provide for the necessary adjustment of the hanger 15.

After the bearing plate 17 has been driven this far to the right as possible, the bearing plate 17 is secure in its adjusted position relative to the joist 23 by driving nails 24 through pre-formed openings 25 in the bearing plate 17. At this time the joist 23 is firmly positioned with respect to the masonry wall 10.

It is pointed out here that the joist 23 cannot move to the left, as viewed in FIGURE 2, in that the ends thereof abut the masonry wall 10. It cannot move downwardly without the rod extensions 20 swinging ina clockwise direction. However. the swinging of the rod extensions 20 downwardly in a clockwise direction towards the wall 10 is prevented by the tab or ear 22 of the bearing plate 17 which, in turn, is anchored to the joist 23. Therefore, the joist 23 is fixed against downward movement and thereby is permanently anchored by the hanger 15.

Referring once again to FIGURE 2 in particular, it will be seen that by adjusting the angle A, the vertical position of the bearing plate 17 may be readily adjusted. Inasmuch as the courses of the masonry wall 10 do not always fall at the exact level desired for the mounting of the joist, it will 'be apparent that by adjusting the angle A in advance, for all practical purposes, the hangers 15 may be vertically adjusted in advance to receive the individual joists and further adjustment may be made only to compensate for variations in heights of the individual joists.

Reference is now made to FIGURE 5 wherein the hangers 16 of the joist hangers are incorporated in a slightly modified form of reinforcement which is generally referred to by the numeral 26. It is to be noted that the reinforcement 26 is of a conventional zig-zag pattern and is adapted for the positioning of the hangers 16 on predetermined centers. The rods 18 of the hanger 16, which form the anchoring portions thereof, are welded to the reinforcement 26 and the hangers 16 become integral components.

Reference is now made to FIGURE 6 wherein a slightly modified form of joist hanger is illustrated, the joist hanger being generally referred to by the numeral 27. The joist hanger 27 incorporates the bearing plate 17. However, the hanger thereof, which hanger is identified by the numeral 28, is slightly different from the hanger 16 in that it is of a two-piece construction. In the hanger 28, the anchoring portion is formed separately from the sling portion. The rods 18 which form the anchoring portion terminate in upstanding ends 29 from which the sling portion of the hanger 28 is suspended. The sling portion of the hanger 28, like the sling portion of the hanger 16, is formed of a pair of transversely spaced rods 20 which are connected together at their lower ends by a transverse rod portion 21. However, in lieu of the rods 20 being extensions of the rods 18, the upper ends of the rods 20 are provided with downwardly opening hooks 30 which are engaged over the upstanding ends 29 of the rods 18 and provide for a pivotal connection between the sling portion and the anchoring portion of the hanger.

It is to be understood that the joist hanger 27 functions in the same manner as described above with respect to the joist hanger 15, and no further description thereof is believed to be necessary.

Referring now to FIGURE 7 in particular, it will be seen that there is illustrated a third form of joist hanger which is generally referred to by the numeral 31. The joist hanger 31 differs both in the construction of the hanger thereof and in the bearing plate. The hanger, which is generally referred to by the numeral 32, includes an anchoring portion formed by transversely extending rods 33 which are similar to the rods 18 and which may be parts of a wall reinforcement. The sling portion of the hanger 32 is in the form of a pair of downwardly sloping rod extensions 34 which project away from the face of the wall and which terminate at their lower ends in upwardly opening hooks 35.

The bearing plate of the joist hanger 31 is identified by the numeral 36 and is provided at the opposite ends thereof with upstanding ears 37. The ears 37 are spaced apart a distance sufficient to permit the passage of a joist 23 therebetween. The ears 37 are provided with suitable openings 38 through which the hooks 35 pass. It will thus be seen that the bearing plate 36 is pivotally carried by the sling portion of the hanger 32.

It is to be understood that once the joist 23 has been installed in place on the wall 10 by means of a joist hanger 31, it will be anchored in place by one or more nails 40 driven upwardly through the bearing plate 36 into the lower part of the joist 23. A principal advantage of the joist hanger 31 is that the bearing plate 36 is substantially flush with the underside of the joist 23 and therefore, the bearing plate 36 in no way interferes with the mounting of a ceiling on the underside of the joist 23.

The several forms of bearing plates previously described have been provided with apertures through which nails may be driven. In certain instances, it may be desirable to provide the bearing plates with integral fastening means so as to eliminate the necessity of locating a nail when anchoring the bearing plates to the joist. In FIGURE 8 there is illustrated the bearing plate 17 having integral fastening means. It is to be noted that the integral fastening means are in the form of triangular pleats 41 which have been struck from the metal of the bearing plate 17. Each pleat 41 is connected to the hearing plate by means of a strap 42. The strap 42 of each pleat 41 initially slopes downwardly from the bearing plate so that the point of the associated pleat 41 is disposed below the upper surface of the bearing plate so as to not interfere with the adjustment of the bearing plate relative to a joist. When the cleats 41 are driven into the joist, the straps 42 move back into position coplanar with the bearing plate. It is to be noted that the straps 42 are tapered so that the straps 42 and the cleats 41 may be formed with a single cut.

Although several embodiments of the invention have been specifically illustrated and described herein, it is to be understood that other variations may be made in the disclosed joist hangers without departing from the spirit and scope of the invention, as defined by the appended claims.

Iclaim:

1. A masonry wall and joist assembly comprising a masonry wall formed of masonry units laid in courses, a joist hanger supported by said masonry wall intermediate the height thereof; said joist hanger having an anchoring portion embedded in said masonry wall between two of said courses thereof with the vertical position of said anchoring portion being determined by the vertical positions of said two courses, a depending sling portion, and means connecting said sling portion to said anchoring portion with said sling portion being disposed in an angularly adjusted relation to and spaced laterally relative to said masonry wall and at a predetermined vertical position independent of the vertical positions of said two courses and said anchoring portion, and a horizontally disposed bearing plate carried by said sling portion, and a joist flushly seated on said bearing plate in end abutting relation to said masonry wall, said bearing plate being fixedly secured to said joist and anchoring said sling portion in said angular and laterally spaced relation to said masonry wall and thus retaining the predetermined vertical position of said fling portion and said joist.

2. The joist hanger of claim 1 wherein said sling portion and said anchoring portion are both formed of rodlike material with said sling portion being formed separately from said anchoring portion and being connected thereto by means of downwardly opening hooks on the upper ends of said sling portion releaseably hooked over upturned ends on said anchoring portion.

3. The masonry wall and joist assembly of claim 1 wherein said joist extends above and below said anchoring portion.

4. The masonry wall and joist assembly of claim 1 wherein said anchoring portion is part of a reinforcement for said masonry wall with said reinforcement extending longitudinally of said masonry wall.

References Cited UNITED STATES PATENTS 247,050 9/1881 Ham 28720.94

271,730 2/1883 Morrison 287-20.94

824,470 6/1906 Dyer 287-20.94 1,055,050 3/1913 Knape 287-2094 1,692,351 11/1928 Ropp 28720.94 2,900,684 8/1959 Miles 287--20.94 2,637,608 5/1953 McDonald 248291 FOREIGN PATENTS 172,684 1/ 1935 Switzerland.

CARL W. TOMLIN, Primary Examiner.

RAMON S. BRITTS, Assistant Examiner.

U.S. Cl. X.R. 248-291

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