U.S. patent number 3,686,814 [Application Number 05/007,452] was granted by the patent office on 1972-08-29 for false window muntin bar structure.
This patent grant is currently assigned to V. E. Anderson Mfg. Co.. Invention is credited to Richard N. Anderson.
United States Patent |
3,686,814 |
Anderson |
August 29, 1972 |
FALSE WINDOW MUNTIN BAR STRUCTURE
Abstract
False window muntin bar structure including unique muntin bar
member interlock structure and retaining clip structure is
disclosed. The interlock structure is operable in conjunction with
hollow false muntin bars and includes an interlock member in the
form of a cross adapted to fit within intersecting false muntin bar
members with one end of the cross extending in each direction of
extent of the intersecting false muntin bar members. The retainer
clip for the false muntin bar structure includes a central abutment
portion against which an end of the muntin bar member is abutted, a
retaining portion extending from one side of the abutment portion
for securing the end of the muntin bar member thereto, and a barbed
portion extending from the other side of the abutment portion of
the retainer clip for securing the retainer clip to the frame of a
window in which the false muntin bar structure is installed.
Modifications of the false muntin bar interlock member and the
retainer clip are disclosed.
Inventors: |
Anderson; Richard N.
(Owensboro, KY) |
Assignee: |
V. E. Anderson Mfg. Co.
(Owensboro, KY)
|
Family
ID: |
21726242 |
Appl.
No.: |
05/007,452 |
Filed: |
February 2, 1970 |
Current U.S.
Class: |
52/456; 52/665;
52/507; 52/668 |
Current CPC
Class: |
E06B
3/685 (20130101) |
Current International
Class: |
E06B
3/00 (20060101); E06B 3/68 (20060101); E06b
003/30 (); E06b 009/01 (); E04c 002/42 () |
Field of
Search: |
;52/309,455,456,507,665,668 ;287/189.36,189.36A ;46/27,28,29 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Perham; Alfred C.
Claims
What I claim as my invention is:
1. False muntin structure for a window including a peripheral frame
and a glazing panel comprising a grill, including a plurality of
hollow intersecting linear members having sections rabbeted at each
intersection to substantially half the depth of the linear members,
which rabbeted sections are interfitted to form the intersections,
said linear members having ends terminating adjacent the frame of
the window structure, means for securing the linear members
together at the intersections thereof, including a cross-shaped
interlocking member having cylindrical portions at the ends thereof
extending perpendicularly of the cross-shaped member, the ends of
which interlocking member are received within the separate linear
members at the intersection thereof, and retainer clips secured to
the window frame and the ends of the linear members.
2. Structure as set forth in claim 1 wherein the retaining clips
include a central abutting portion adapted to be positioned against
an end of a linear member, a portion extending from one side of the
abutting portion for securing the end of the linear member thereto
against transverse movement and a portion extending from the other
side of the abutting portion adapted to extend into the window
frame for securing the retaining clip and linear member held
thereby to the window frame in contact with the glazing panel.
3. Structure as set forth in claim 2, wherein the portion of the
retaining clip extending from one side of the abutting portion of
the clip comprises a pair of spaced apart stepped leg portions
having beads at the ends thereof which leg portions extend toward
each other away from the abutting portion.
4. Structure as set forth in claim 2 wherein the portion of the
retaining clip extending from the one side of the abutting portion
of the clip comprises a substantially flat portion adapted to fit
within a hollow false muntin member.
5. Structure as set forth in claim 2 wherein the portion of the
retaining clip extending from the other side of the abutting
portion of the clip includes a substantially flat portion having a
relatively sharp edge and barb means extending upwardly from the
substantially flat portion and toward the abutting portion at the
end of the barb means to prevent withdrawal of the clip from the
frame after installation thereof.
6. A retainer clip for false window muntins or the like comprising
a central abutting portion for abutting the end of a false window
muntin member, means extending from one side of the abutting
portion for securing an end of a false window muntin member
thereto, and means extending from the opposite side of the abutting
portion of the retainer clip for securing the retainer clip to a
window frame, including a pair of spaced apart triangular parts
having grooves in one side thereof extending in a direction
parallel to the abutting portion of the retaining clip and portions
extending beyond the abutting portion of the retaining clip which
extend at an angle with respect to the rest of the triangular
parts.
7. Structure as set forth in claim 6 wherein the portion of the
retainer clip extending from one side of the abutting portion
comprises a pair of spaced apart stepped leg portions having beads
at the ends thereof extending toward each other.
8. Structure as set forth in claim 7 wherein the spaced apart
stepped leg portions converge toward each other outwardly of the
abutting portion of the retaining clip.
9. False muntin structure for a window including a peripheral frame
and a glazing panel comprising a grill, including a plurality of
hollow intersecting linear members having sections rabbeted at each
intersection to substantially half the depth of the linear members,
which rabbeted sections are interfitted to form the intersections,
said linear members having ends terminating adjacent the frame of
the window structure, means for securing the linear members
together at the intersections thereof, including a cross-shaped
interlocking member having ends received within the separate linear
members at the intersection thereof, and retainer clips secured to
the window frame and the ends of the linear members.
10. Structure as set forth in claim 9 wherein the means for
securing the linear members together at the intersections thereof
comprises a pair of substantially flat elongated portions in
adjacent planes secured together in side by side relation in the
form of a cross and cylindrical portions secured to each end of
each elongated portion having the axis of generation thereof
extending perpendicular to the cross formed by the flat elongated
portions and extending primarily toward the plane of the elongated
portion to which they are not attached.
11. Structure as set forth in claim 10 wherein two of the
cylindrical portions at the opposite ends of one of the flat
elongated portions have a beveled edge on the end thereof extending
toward the other flat elongated portion.
12. Structure as set forth in claim 10 wherein two of the
cylindrical portions at the opposite ends of one of the flat
elongated portions of the interlock are beveled on one end from
substantially the center thereof toward the other end of the flat
elongated portion.
13. Structure as set forth in claim 10 wherein at least some of the
cylindrical portions secured to the ends of the elongated portions
are offset from the other cylindrical portions axially thereof.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to window structure and refers more
specifically to false muntin structure for windows including unique
muntin bar member interlock structure and retainer clip structure
for securing the ends of the bars of the false muntin bar structure
within a window frame against a window glazing panel.
2. Description of the Prior Art
In the past, large windows were constructed with small panes by
providing intermediate muntin bars framing each of the small panes.
More recently, false muntin bars have been applied over large
window panes to give the effect of a plurality of small panes
connected by muntin bars without the expense of the prior window
structure. Such structure also permits easier cleaning of the
windows if the false muntin bar structure is removable. The
provision of false muntin structure requires that linear muntin
members be connected at intersections thereof so as to give the
appearance of being in substantially the same plane and requires
that the ends of the false muntin structures be secured to the
frame of the window in which the false muntin structure is to be
positioned or that other suitable means be found to secure the
false muntin structure in place.
In the past, the interlocking structure for false muntin members
and the retaining clips therefor have been deficient in that they
have not permitted rapid assembly of the muntin structure itself or
the ready installation of the muntin structure in a window and the
periodic removal of the muntin structure from the window. In
addition, some of the proposed interlocking structure and retaining
clips have been complicated and/or expensive while being
inefficient.
SUMMARY OF THE INVENTION
False window muntin structure is provided in which hollow muntin
bar members are connected at intersections by means of a
cross-shaped interlocking member, one end of which extends in each
direction within the intersecting false muntin members. The false
muntin bar structure is then secured within a window frame adjacent
a window glazing panel by means of retainer clips at the ends of
the false muntin bar members.
The interlocking members include cylindrical portions at the ends
of the cross arms, the axis of generation of which extends
perpendicularly to the cross shape thereof, which cylindrical
members are complementary to the inner profile of a portion of the
hollow false muntin bar members. The retainer clips include an
abutment portion for abutting the ends of the false muntin bar
members, a portion extending on one side of the abutment portion
thereof for receiving the ends of the false muntin bar members, and
a portion extending from the other side of the abutment portion for
securing the clips to the frame of a window structure in which the
false muntin structure is installed.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an elevation view of window structure including false
muntin structure constructed in accordance with the invention.
FIG. 2 is a perspective view of an interlocking member for use in
the false muntin structure of FIG. 1.
FIG. 3 is an enlarged cross section view of a false muntin member
as illustrated in FIG. 1 taken substantially on the line 3--3 in
FIG. 4.
FIG. 4 is a plan view of a length of false muntin bar taken at the
intersection thereof with another section of false muntin bar not
shown, and illustrating an interlocking member positioned
therein.
FIGS. 5, 6 and 7 are partial section views of two false muntin
members taken at the intersection thereof and illustrating the
connection of the false muntin bar members by means of an
interlocking member such as illustrated in FIG. 2, in progressive
stages.
FIG. 8 is an enlarged partial section view of the false muntin
structure of FIG. 1 taken substantially on the line 8--8 and
showing the two false muntin bar members of FIG. 1 secured together
at their intersection by means of an interlocking member such as
illustrated in FIG. 2, following the procedure illustrated in FIGS.
5, 6 and 7.
FIGS. 9 and 10 show modifications of the interlocking member
illustrated in FIG. 2.
FIG. 11 is a perspective view of a universal retaining clip
securing the false window muntin structure illustrated in FIG. 1 to
the frame of the window illustrated in FIG. 1.
FIG. 12 is an enlarged plan view of the universal retaining clip
illustrated in FIG. 11.
FIG. 13 is an elevation view of the retainer clip illustrated in
FIG. 12 taken substantially in the direction of arrow 13 in FIG.
12.
FIG. 14 is an elevation view of the universal retaining clip
illustrated in FIG. 12 taken in the direction of the arrow 14 in
FIG. 12.
FIGS. 15, 16 and 17 are perspective views of modifications of the
retaining clip illustrated in FIGS. 11 through 14.
FIGS. 18, 19 and 20 are a plan and two elevation views respectively
of another modification of the universal retaining clip illustrated
in FIG. 11.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The window 10 illustrated in FIG. 1 includes an exterior frame 12
in which a glazing panel 14 is secured by convenient means such as
vinyl glazing strips or the like as, for example, shown in U.S.
Pat. No. 3,480,623. A false muntin bar structure 16 constructed in
accordance with the invention is secured within the frame 12 by
retaining clips 20. The separate false muntin bars 22 and 24 are
connected together at their intersection by interlocking structure
26.
False muntin structure 16 is positioned on one side of the glazing
panel 14 only. However, due to its position in contact with the
glazing panel 14, the false muntin structure 16 gives the
impression of a plurality of small glazing panels supported by
intermediate frame members. The false muntin structure 16 may be
readily removed to facilitate cleaning of the windowpane 14 and may
subsequently be replaced in the retaining clips 20 of the
invention.
Frame 12 may be either wood or metal. Plastic may also be used if
in a particular installation this material is desired. Only the
ability to insert a very thin barbed edge of the retaining clips 20
of the invention between the edge of the glazing panel 14 and frame
12 of the window 10 is required to permit use of the retaining
clips 20. The false muntin bar members 22 and 24 may be hollow
plastic members, as illustrated best in FIGS. 3 through 8, or they
may be solid wood false muntin bar members, not shown.
When the false muntin bar members 22 and 24 are solid wood, they
may be secured together at the intersection thereof by being
rabbeted to provide only a half thickness at the intersection
thereof and connected by means of screws, nails or a suitable
adhesive or the like. When the false muntin bar members 22 and 24
are hollow plastic members as shown, the interlocking structure 26
is provided in accordance with the invention.
Interlocking structure 26 requires first rabbeting the false muntin
bar members 22 and 24 at their intersection as shown in FIGS. 4
through 8 to expose the interior of the members 22 and 24 having
the cross section illustrated in FIG. 3 to substantially half the
depth of the members. An interlocking member 28 such as shown in
FIG. 2 is then positioned within one of the false muntin bar
members 22 or 24 as, for example, member 24 as shown in FIG. 4.
The interlocking member 28 includes a pair of relatively flat arms
30 and 32 centrally connected at right angles to each other in the
form of a cross. Cylindrical portions 34, 36, 38 and 40 are
provided at both ends of each of the cross arms having their axis
of generation extending substantially perpendicular to the plane of
the cross formed by the arms, as illustrated in FIG. 2.
With the interlocking member 28 positioned in the muntin bar member
24, as shown in FIG. 4, the cylindrical portions 36 and 40 are
received within the complementary portion 42 of the cross section
of the false muntin bar member 24 at each side of the rabbeted
section 44. The false muntin bar member 22 is then secured to
member 24 by the interlocking member 28, as shown in FIGS. 5
through 7, to provide the assembled structure 16, as illustrated in
the section view of FIG. 8.
In assembly, the false muntin bar 24 having the interlocking member
28 therein, as shown in FIG. 4, is positioned over the false muntin
bar member 22 with the rabbeted sections adjacent to each other,
and the cylindrical portion 38 on the arm 32 is inserted into the
complementary portion 42 of the false muntin bar member 22 through
the rabbeted opening 46 therein. At the same time, the false muntin
bar member 24 is rotated clockwise from its position as shown in
FIG. 5 to extend over the false muntin bar 22 at the rabbeted
portion 46 thereof, while the cylindrical portion 38 is moved into
the interior of the false muntin bar member 22 to the position
illustrated in FIG. 6 just prior to snapping of the cylindrical
portion 34 on the cross arm 32 into the rabbeted portion of the
false muntin bar member 22.
Slight further movement of the false muntin bar member 24 to the
left from the position illustrated in FIG. 6 will cause the
cylindrical portion 34 of the interlocking member 28 to snap into
the rabbeted portion of the false muntin bar member 22, after which
the interlocked joint is completed by moving the false muntin bar
member 24, as illustrated in FIG. 7, to the right so that the false
muntin bar member 24 snaps into the rabbeted portion of the false
muntin bar member 22 with counterclockwise rotation at the
interlocking structure to provide a completely assembled
interlocked false muntin structure, as illustrated in section in
FIG. 8.
The interlocking joint structure 26 thus formed is particularly
rigid. Further, the interlocking joint structure 26 is clean,
having no connecting members showing, and may be disassembled by
reversing the above recited procedure.
The interlocking member 28 may be modified to increase the facility
with which the interlocking of the false muntin bar members 22 and
24 is accomplished. The two modifications of the interlocking
member 28 shown in FIGS. 9 and 10 increase the ability to insert
the cylindrical portions 38 and 34 within the false muntin bar
member 22. Thus, with the structure of FIG. 9, the upper part of
the cylindrical portions 34 and 38 has been beveled to provide a
conical surface 48 at one end of the cylindrical portions 34 and 38
of the interlocking member 28. In the modified structure of FIG.
10, the cylindrical portions 34 and 38 at the opposite ends of the
cross arm 32 have been beveled from approximately the axis of
generation thereof inwardly toward the cross arm member 30 to
provide a cam surface 50.
The retainer clip 20, illustrated best in FIGS. 11 through 14,
includes an abutting portion 80 against which one end of the muntin
bars 22 or 24 may be abutted in assembly, as shown in FIG. 11, a
retaining portion 82 extending from one side of the abutting
portion 80 for retaining the end of a false muntin bar in assembly
therewith, and a barbed portion 84 extending from the other side of
the abutting portion 80 adapted to fit between the frame 12 of the
window structure 10 and the glazing panel 14 to retain the false
muntin bar structure 16 in the window 10.
The particular retaining clip 20 illustrated in FIGS. 11 through 14
is universal in that it may be used with either plastic or wood
false muntin bar structures and in conjunction with either wood or
metal window frames. With this in mind, the retaining portion 82 of
the clip 20 is provided with a first-stepped surface 86 to receive
a flatter, wider wood muntin bar, and a second-stepped surface 88
to receive a thicker, narrower plastic muntin bar. A separate
retaining bead 90 is provided at both edges of the clip 20 to
secure the plastic muntin bar members in position. The abutment 92
provided between the stepped surfaces 86 and 88 serves to retain
the wood muntin bars within the clip 20.
The barbed portion 84 of the clip 20 is particularly thin and the
edge 94 is beveled to sharpen it so that the portion 84 of the clip
20 may be slipped between the glazing panel 14 and either metal or
wood frame structure 12. The barb 96 of the clip 20 is cut from the
barbed portion 84 on three sides and extends upwardly, as shown
best in FIG. 13, to prevent ready withdrawal of the clip 20 from a
window structure on which it has been installed.
Both the barb and the sharp edge of the barbed portion 84 permit
lateral movement of the clip 20 in a window installation to permit
adjusting of the window false muntin structure 16 as desired. The
particular construction of the barb 96 provides proper barb contact
with the window frame in structures having different openings
between the frame and glazing panel without providing excessive
stress in the glazing panel.
The retaining clip 20 may be modified to provide the retaining clip
98 shown in FIG. 15 if hollow muntin bars are to be used. The
modified clip 98 includes the retaining portion 100 adapted to fit
within the cross section of the hollow muntin members 22 and 24 in
place of the retaining structure 82 of the clip 20. The barbed
portion 102 of the clip 98 and the abutment portion 104 are the
same as those of the clip 20.
The further modifications 106 and 108 of the clip 20, illustrated
in FIG. 16 and 17, have triangular barbed portions 110 and 112,
respectively. The clip 106 is best suited for use with wood frames
and includes a plurality of small barbs on a relatively thin barbed
portion 110, while the clip 108 is best suited for use with metal
frames and has a relatively higher single barb 116 on the barb
portion 112 suitable for locking behind a bead on a metal window
frame. As shown, the clip 106 has a universal mullion bar retaining
portion similar to that of clip 20, while clip 108 has a retaining
portion adapted specifically to be used with hollow muntin bar
members similar to the retaining portion 100 of the clip 98.
The modified retaining clip 130 is again a universal retaining clip
and includes the abutting portion 132 against which the end of a
muntin bar is positioned in assembly. The retaining portion of the
clip 130 is again in two separate parts 134 and 136 which converge
toward each other outwardly of the abutting portion 132 and have
stepped surfaces 138 and 140 respectively. Thus, muntin bars having
both width and breadth of somewhat different dimensions may be
retained by the plastic resilient parts 134 and 136 of clip 130
which are sufficiently resilient to assume a parallel relation.
The barbed portion of the retaining clip 130 is also divided into
two parts 142 and 144, both of which are generally triangular in
plan and are provided with low barbs 146 and 148 to permit use of
the clips 130 with wood frames. The parts 142 and 144 of the
retaining clip 130 extend beyond the abutting portion 132 of the
clip 130 and are provided with an incline on the portions 150 and
152 thereof extending beyond the abutting portion 132 for locking
the portions 150 and 152 behind a retaining bead when the clip 130
is used in conjunction with a metal frame including a retaining
bead.
In use, one of the clips 20 or the modifications thereof are
secured to the free ends of the muntin bar members 22 and 24 which
have previously been interlocking with the interlocking structure
26, one of the barbed portions of the clips is inserted between the
glazing panel 14 and frame 12, and the muntin bar member retained
by the inserted clip is bowed to permit insertion of the clip on
the other end thereof between the frame and glazing panel. At this
time, the installed muntin bar may be moved transversely in one
direction or the other to insert the clip on one end of the other
muntin bar member, and again the other muntin bar member is bowed
to insert the clip at the other end thereof between the glazing
panel and window frame whereby the installation of the false muntin
bar structure is complete.
Removal of the false muntin bar structure 16 may require bowing of
the muntin bar members to remove them from the retaining clips
therefor. Replacing the false muntin bar structure again similarly
may require bowing of the false muntin bar members and positioning
of them within the retaining clips from which they were
removed.
* * * * *