U.S. patent number 3,861,104 [Application Number 05/399,992] was granted by the patent office on 1975-01-21 for pivoted wall anchor device.
This patent grant is currently assigned to Beven-Herron, Inc.. Invention is credited to Warren H. Bower.
United States Patent |
3,861,104 |
Bower |
January 21, 1975 |
PIVOTED WALL ANCHOR DEVICE
Abstract
An anchor plate for embedding in a concrete wall has an
extending end pivoted to a bar in turn arranged to overlie the top
of a roof framing, the pivotal connection permitting swinging of
the bar should the horizontal location of the roof framing be
slightly out of alignment with the anchor plate. The bar includes a
given pattern of nail holes permitting certain nail holes to be
selected so as to effect required securement of the bar to the top
of the roof framing and thus securely anchor the roof framing to
the concrete wall.
Inventors: |
Bower; Warren H. (Buena Park,
CA) |
Assignee: |
Beven-Herron, Inc. (La Mirada,
CA)
|
Family
ID: |
23581771 |
Appl.
No.: |
05/399,992 |
Filed: |
September 24, 1973 |
Current U.S.
Class: |
52/283; 52/289;
52/713 |
Current CPC
Class: |
E04B
1/41 (20130101); E04B 7/00 (20130101) |
Current International
Class: |
E04B
7/00 (20060101); E04B 1/41 (20060101); E04b
001/41 (); E04b 005/00 () |
Field of
Search: |
;52/712-715,289,283,751,702 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Abbott; Frank L.
Assistant Examiner: Ridgill, Jr.; James L.
Attorney, Agent or Firm: Pastoriza & Kelly
Claims
What is claimed is:
1. In combination;
a. a roof framing member;
b. a concrete wall having one side intercepted by said framing
member;
c. an anchor plate terminating at one end in anchor means embedded
in said concrete wall so that its other end extends a given
distance from said one side of the wall at a location corresonding
to the point the top of the roof framing member intercepts the
wall;
d. a flat securing bar of length six to eight times its width
pivoted at one end to the extending end of the anchor plate so that
the free end of the bar can swing in a horizontal plane, said bar
having a series of nail holes each of diameter no greater than
one-eighth the width of the bar, and in a given pattern spaced at
least one-fourth said width on either side of the longitudinal
center line of the bar, and longitudinally spaced apart a distance
between one and one-fourth times the width of the bar, and
additional nail holes on the longitudinal center line of the bar
between the mid point of the bar and its free end, whereby, if the
top of the roof framing member does not intercept the concrete wall
at the precise horizontal position of the anchor plate, the
securing bar may be pivoted slightly in an horizontal plane so that
the member will underlie a major portion of the bar and so that
suitable nail holes making up the given pattern may be selected for
receiving nails to secure the bar to the top of the roof framing
member;
e. a ledger board; and
f. a spacer block, said anchor plate including means in its
extending end for enabling securement of the device to said leger
board with said spacer block thereunder for proper vertical
positioning of the anchor plate relative to the contemplated
vertical location of the top of said roof framing member.
Description
This invention relates generally to building construction and more
particularly to a device facilitating the anchoring of roof framing
to concrete walls.
For convenience of terminology in the present specification, a wall
whether constructed of concrete, brick or concrete blocks will
simply be referred to as a concrete wall.
BACKGROUND OF THE INVENTION
It is common practice to anchor roof framing to a concrete wall at
the point of intersection in addition to other normal securing
means in order to provide additional safety particularly in
earthquake-prone areas. In fact, some codes actually require this
additional anchoring.
Normal practice is to provide a metal bar with one end embedded in
the concrete wall and its other end then secured to the top or side
of a roof framing member. In actual construction operations, the
anchoring of the bar in the concrete wall is effected prior to
assembling of the roof framing. For example, if the wall is
concrete the bars will be embedded in the concrete at the time of
pouring the concrete. After the wall has then been positioned
vertically, the roof framing is assembled. Hopefully, the roof
framing members will then be properly positioned so that the
protruding ends of the bars can be secured to the top of the roof
framing members to provide the additional anchoring.
Problems in the foregoing operations arise, however, when actually
assembling the roof framing in accord with the specifications as
set forth in the building plan. More often than not the horizontal
location of the roof framing member relative to the one side of the
concrete wall from which the anchor bar extends is not always
precisely alilgned with the anchor bar. As a result, it is
sometimes not possible to actually secure the bar to the top of the
roof framing member or it is necessary to deviate from the
specifications to properly position the roof framing member under
the anchoring bar. It will be appreciated that the latter solution
is often the only one possible since the bar, once anchored into
the concrete wall, cannot be moved.
BRIEF DESCRIPTION OF THE PRESENT INVENTION
With the foregoing in mind, the present invention contemplates the
provision of an improved wall anchor device which overcomes the
foregoing problem of any misalignment in the final assembly of roof
framing members relative to the concrete wall.
More particularly, rather than a single bar or structure embedded
in the concrete wall, the device of the present invention comprises
an anchor plate terminating at one end in an anchor means for
embedding in the concrete wall. A flat securing bar, in turn, is
pivoted to the extending end of the anchor plate so that the free
end of the bar can swing in a horizontal plane. A series of nail
holes in a given pattern is provided on either side of the
longitudinal center line of the bar.
The foregoing arrangement is such that if the roof framing member
does not intercept the block wall at the precise horizontal
position of the anchor plate, the securing bar may be pivoted
slightly so that the member will underlie a major portion of the
bar. Suitable nail holes may then be selected from the given
pattern for receiving nails to secure the bar to the top of the
roof framing member.
BRIEF DESCRIPTION OF THE DRAWINGS
A better understanding of the present invention will be had by now
referring to the accompanying drawings in which:
FIG. 1 is a perspective view of a pivoted wall anchor device
according to the present invention;
FIG. 2 is a fragmentary, perspective view partly broken away of a
concrete wall with an intercepting roof framing member wherein the
device of FIG. 1 is shown in position to anchor the roof framing
member to the wall;
FIG. 3 is a plan view partly in section taken in the direction of
the arrows 3--3 of FIG. 2;
FIG. 4 is a view similar to FIG. 3 illustrating the operation of
the device when a misalignment occurs in one direction; and,
FIG. 5 is a view similar to FIG. 4 illustrating the operation of
the device when a misalignment occurs in an opposite direction.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1, the improved wall anchor device comprises an
anchor plate 10 terminating at one end in an anchor means 11 which
may take the form of rigidly secured dowels extending in opposite
directions as shown. A flat securing bar 12, in turn, has one end
12a pivoted as at 13 to the other end of the anchor plate 10 so
that the free end 12b can swing in an horizontal plane as indicated
by the arrow 14.
As shown, the bar 12 includes a series of nail holes 15 and 16 in a
given pattern on either side of a longitudinal center line C.L. for
the bar 12. Additional holes 17 are included on the longitudinal
center line between the midpoint of the bar and its free end
12b.
The size of the nail holes, and their pattern relative to the width
and length of the bar 12 constitute important features of this
invention. If the width of the bar 12 is designated W as shown, the
length L is from six to eight times the width. The diameter of each
of the nail holes, designated D for one of the nail holes 15, is no
greater than one-eighth of the width W. Further, the series of nail
holes on either side of the longitudinal center line are spaced at
least one-fourth of the width W from this center line. Finally, the
longitudinal spacing designated P between the successive nail holes
is between one and one and one-fourth times the given width W.
Two nail holes 18 are also provided in the anchor plate 10, the
purpose for which will become clearer as the description
proceeds.
Referring to FIG. 2, the manner in which the anchor device of FIG.
1 is used will now be described. In FIG. 2 there is shown a
concrete wall 19 in a vertical position. The anchor plate 10 and
anchor means 11 are shown embedded in this wall, such embedding
taking place at the time the concrete wall is poured. The bar 12 is
permanently affixed in pivotal relationship to the anchor plate 10
and thus protrudes out from the extending end of the anchor plate
as shown. At the time the concrete wall 19 is poured, anchor bolts
are also provided for supporting a horizontal ledger board 20 so
that when the wall 19 is raised to a vertical position, the ledger
board 20 will be at a vertical level corresponding to the top of
the roof framing.
One such roof framing member itself is shown at 21 and is secured
to the ledger board 20 as by metal brackets 22. Normally, plywood
23 overlies the top of the roof framing to provide a floor base. A
spacer block 24 underlies the extending end of the anchor plate 10
and is secured between the underside of the anchor plate and top of
the ledger 20 by means of nails passed through the nail holes 18.
This spacer block assures that the extending bar 12 will be in a
position to clear the top surface of the plywood 23 when the same
is positioned between the top of the roof framing member 21 and the
bar 12.
When the roof framing member 21 precisely intercepts in a
perpendicular relationship the one side of the concrete wall 19 at
the point of the anchor plate 10, the bar 12 will overlie the
member properly so that nails such as indicated at 25 may be passed
through selected nail holes to thus adequately anchor the member 21
together with the plywood 23 to the concrete wall 19.
Referring specifically to FIG. 3, the blackened areas above the
nail holes indicate the application of nails through the holes for
securement purposes. The nails are shown as staggered merely to
minimize the risk of splitting of the wood through which the nails
pass. In FIG. 3, the plywood 23 is not shown to avoid obscuring a
view of the position of the upper edge of the framing member
21.
As mentioned earlier, in the actual assembly of the roof framing in
accord with specifications, the roof framing member will not always
intercept the concrete wall 19 at the precise point of the anchor
plate 10. Thus referring to FIG. 4, there is shown a situation
where the roof framing member 21 is positioned slightly to the left
of the anchor plate as viewed in plan. In this instance, and in
accord with the invention, the bar 12 may be pivoted about the
point 13 to a position in which a major portion of the top of the
roof framing member underlies the bar 12. Thereafter, suitable nail
holes may be selected to effect the required securement of the bar
to the top of the roof framing member. The selected holes having
nails are shown in enlarged black areas in FIG. 4 and because of
the pattern of holes available from which selections may be made,
it will be noted that securement of the nails into central portions
of the top of the roof framing member can be effected even though
the member is out of alignment with the anchor plate.
Referring to FIG. 5, there is illustrated the situation where the
roof framing member is dislocated slightly to the right of the
anchor plate. In this event, the bar 12 is simply pivoted in an
opposite direction to a position in which a major portion of the
top of the roof framing member 21 underlies the bar. Again,
suitable holes are selected such as those illustrated in FIG. 5, as
enlarged black areas to effect a secure nailing of the bar 12 to
the roof framing member.
From the foregoing description, it will thus be evident that the
pivoted wall anchor device of the present invention permits proper
and secure anchoring of roof framing members to concrete walls even
though there may be misalignment between the position of the roof
framing member and the location of the anchor plate.
* * * * *