U.S. patent number 3,791,095 [Application Number 05/206,531] was granted by the patent office on 1974-02-12 for decorative grill joint.
This patent grant is currently assigned to Rimar Manufacturing Inc.. Invention is credited to Robert I. Martin.
United States Patent |
3,791,095 |
Martin |
February 12, 1974 |
DECORATIVE GRILL JOINT
Abstract
A decorative window grill construction employing a plurality of
interconnected, elongated grill bars of flattened construction to
insert within the insulating space of an insulated window assembly
and including connecting pins affixed at the free ends of the grill
bars for insertion into undersized holes provided in the periphery
of the insulated glass construction. The grill bars insert within
axially aligned bores and distort portions of the internal grill
bar construction. Grill bars forming diamond shaped configurations
and having axially aligned central bores abut in angular relation
by means of undersized bent pins which insert within the bores and
restrict therein at the bent portions.
Inventors: |
Martin; Robert I. (Manheim,
PA) |
Assignee: |
Rimar Manufacturing Inc.
(Manheim, PA)
|
Family
ID: |
22766806 |
Appl.
No.: |
05/206,531 |
Filed: |
December 9, 1971 |
Related U.S. Patent Documents
|
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
|
885095 |
Dec 15, 1969 |
|
|
|
|
Current U.S.
Class: |
403/295;
52/456 |
Current CPC
Class: |
E06B
3/667 (20130101); E06B 3/6604 (20130101); Y10T
403/555 (20150115) |
Current International
Class: |
E06B
3/667 (20060101); E06B 3/66 (20060101); E04b
001/48 () |
Field of
Search: |
;287/2.92D,2.92E,2.92A,2.92B,126,189.36H
;52/311,455,456,507,656 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Perham; Alfred C.
Attorney, Agent or Firm: Spivak; Karl L.
Parent Case Text
This is a continuation of application Ser. No. 885,095 filed Dec.
15, 1969, and now abandoned.
Claims
I claim:
1. In a joint for connecting angular abutting members of a
decorative grill wherein the grill bars are provided with small,
axially aligned bores, the combination of
A. a pair of elongated grill bars each having a joined end and a
free end,
1. the said bars abutting at the said joined ends thereof in
angular relation,
2. each said axially aligned bore extending through the joined
end,
a. each bore being fabricated with a cross sectional dimension of
approximately one-sixteenth of an inch,
b. the said bores communicating at the joined ends thereof to form
an end positioned recess, the recess being accessible from outside
of the joint; and
B. a pin, said pin being bent intermediate its length to form an
apex and a pair of bore insertable legs angularly extending from
the apex,
1. said pin being half round in cross-sectional configuration,
2. said pin having a cross-sectional diameter less than the
dimension of each bore,
3. each said bore insertable leg being bent only once intermediate
its length to form a bore restrictive bend,
4. the said apex of the pin being positioned within the recess and
being exposed from outside of the joint,
5. each said bore insertable leg inserting within the bore of an
abutting grill bar to secure the grill bars in angular
relation,
a. each said bore restrictive bend binding against a portion of the
periphery of its associated bore to restrict relative movement
between the pin and the grill bars,
6. said pin being fabricated of steel and having a natural spring
bias,
a. the spring bias of the pin material acting at the said bore
restricing bends to develop sufficient frictional forces, between
the pin and the bar construction which defines the bores to prevent
the joint from being easily pulled apart.
Description
BACKGROUND OF THE INVENTION
This invention relates to the general field of building materials
and more particularly is directed to decorative window grills of
the interlocking plastic bar type adapted for use within the
insulating space of insulated glass windows.
In view of the rising costs encountered in the building material
industry, it has become increasingly important to find substitute
materials and methods which may be employed to replace existing
conventional materials and methods in order to save money without
undue sacrifice in quality or appearance. Such savings have been
almost universally realized in the manufacture of window sash by
eliminating the use of individual muntin bars and other window
dividers. In this manner, a window manufacturer can now produce a
sash having but a single light of glass to thereby completely
eliminate the expense of manufacturing and installing individual
window bars and as many as six or eight individual panes of glass
retained within the window bars.
Even though the initial cost savings realized in the new methods of
manufacture can indeed be significant, the advantages thus gained
are somewhat offset by the fact that all of the windows so produced
look alike and the individual characteristics that were available
with prior art constructions can no longer be produced. In order to
offset this shortcoming, the use of decorative plastic window bar
assemblies affixed to the window sash has become increasingly more
popular.
The instant invention finds particular utility in those
installations wherein it is desired to employ insulated glass in
multi-pane assemblies. It is the present practice to utilize a
plurality of panes of insulated glass retained in any well-known
manner between fixed window bar members which are secured to the
window sash. Such construction combines the advantages of the
thermal qualities of insulated glass with the pleasing aesthetic
appearance of a multi-light sash. However, the disproportionate
expense of this type of manufacture usually outweighs the
advantages and such designs are therefore not economically feasible
in most instances.
SUMMARY OF THE INVENTION
By employing the instant plastic window bar assembly positioned
within the insulating space between the usual spaced panes of
glass, single large panes of insulated glass can thus be utilized.
In this manner, the former high manufacturing cost of producing
sash equipped with a plurality of small panes of insulated glass
can thereby be greatly reduced without sacrificing insulating
qualities. At the same time, the present construction achieves
substantially the same aesthetically pleasing appearance.
It should be further noted that not only are initial installation
economies made possible by employing the instant decorative grill
construction, but also, continuing savings to the homeowner can be
realized through the years by reducing painting costs at the
windows through the elimination of the usual muntin bar
construction. In accordance with the past practice, each individual
window bar must be painstakingly painted with the utmost care to
prevent paint from being also applied to the glass. By employing
the present invention as herein described, window bar painting can
thereby be completely eliminated.
The present invention also teaches inexpensive and unusually secure
methods of rapidly and positively joining individual grill bars in
angular relation which are respectively suitable for use with
decorative grills wherein the individual bars are arranged at right
angles to each other and wherein the individual bars are angularly
disposed as in the case of diamond shaped grill bar
configuration.
It is thereby an object of the present invention to provide an
improved decorative grill construction suitable for use with window
sash of the double insulated glass type.
It is another object of the instant invention to provide a
decorative window grill construction designed to permit the
economical utilization of insulated glass in simulated multi-light
window installations.
It is another object of the present invention to provide novel
grill bar connecting means to positively affix individual grill
bars in angular relation.
It is another object of the present invention to provide a
decorative insulated glass window construction that is inexpensive
in manufacture, rugged in construction and trouble-free when in
use.
Other objects and a fuller understanding of the invention will be
had by referring to the following description and claims of a
preferred embodiment thereof, taken in conjunction with the
accompanying drawings wherein like reference characters refer to
similar parts throughout the several views and in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view showing an insulated type window
with affixed decorative window bars.
FIG. 2 is a side elevational view of an insulated type window glass
with affixed diamond grill shaped window bars therein.
FIG. 3 is an exploded, perspective view of the insulated glass and
decorative grill construction of FIG. 1.
FIG. 4 is an exploded, perspective view showing the connection of a
mitered joint of diamond shaped grill members.
FIG. 5 is a side elevational view of the members of FIG. 4 in
assembled relation.
FIG. 6 is a cross-sectional view taken along Line 6--6 of FIG. 5
looking in the direction of the arrows.
FIG. 7 is an exploded, perspective view showing a modified type of
connecting pin for use with thin, flat grill bar members.
FIG. 8 is an assembled view, partially in section, showing the
construction of FIG. 7 in assembled relation.
FIG. 9 is an enlarged, cross-sectional view taken along Line 9--9
of FIG. 8, looking in the direction of the arrows.
DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION
Although specific terms are used in the following description for
the sake of clarity, these terms are intended to refer only to the
particular structure of my invention selected for illustration in
the drawings and are not intended to define or limit the scope of
the invention.
Referring now to FIGS. 1, 2 and 3, I show an insulated glass window
construction 10 comprising a pair of glass panels 12, 14 maintained
in spaced, insulating relationship by means of a plurality of
peripheral horizontal spacing strips 16 and vertical spacing strips
18 suitably joined by corner connectors 20 to thereby provide a
sturdy, spaced construction as required to achieve the insulating
qualities desired for this type of window installation. A
continuous peripheral clip 22 of plastic, metal, such as aluminum
or other suitable material overlies the peripheral edges of the
spaced, glass panels 12, 14 over the spacing strips 16, 18 in
conventional manner to form a stable, structurally secure,
functional insulating window assembly suitable for use in building
construction.
A plurality of interconnecting plastic muntin bars 24, 26 which are
milled to a flat configuration as indicated to conveniently fit
within the space provided between the glass panels 12, 14 position
within this space for decorative purposes. As illustrated in FIG.
1, the muntin bars 24, 26 may be positioned to assume conventional
horizontal and vertical arrangement to simulate the usual six over
six or eight over eight type of sash. As illustrated in FIG. 2, the
muntin bars may be arranged in diamond configuration to thereby
simulate colonial diamond shape window configuration. Most spacers
utilized in conjunction with usual insulated glass construction for
double hung windows and slider windows provide either a one-quarter
inch air space between the inside faces of the glass a
five-sixteenth inch air space between the inside faces of the
glass. Accordingly, the muntin bars 24, 26 bar for grill connecting
purposes. Each pin 32 axially inserts into the respective end of
the bars 24, 26 and preferably terminates outwardly in a pointed
end 34 to thereby facilitate installation. Each metallic or plastic
spacing strip 16, 18 is drilled, punched or otherwise treated to
provide a plurality of receiving openings 36 suitably spaced about
the periphery of the window construction 10 in alignment with each
grill bar projecting pin 32. It is preferable to drill each opening
thirty-six two thousandths of an inch less than the diameter of the
pin 32 so that each pin 32 inserts within each respective opening
36 in a force fit to thus provide a positive seal at the connection
openings. This seal at the spacer opening, 36 prevents powdery
portions of the dessicant from filtering through the hole about the
pin to thereby enter into and contaminate the insulating space
between the glass panels 12, 14.
Referring now to FIGS. 4, 5 and 6, I show a grill joint connection
especially suitable for use with diamond shaped decorative window
grill bar assemblies. A single joint 100 is illustrated, but it
will be appreciated that the principles described herein are
applicable to all of the other peripheral joints utilized when
fabricating a complete diamond shaped grill assembly. In the
embodiment illustrated, a pair of elongated decorative grill bars
102, 104 endwardly join at the mitered edges 106, 108 to form the
diamond shaped configuration. As illustrated in FIG. 6, each grill
bar 102, 104 is provided with a longitudinal, axially aligned,
central bore 110, 112 which extends the entire length of each grill
bar. The central bores 110, 112 extend through the mitered edges
106, 108 and communicate near the top edge 114 of the mitered joint
100 to therein receive the bent pin 116.
As best seen in FIG. 4, the bent pin 116 comprises a unitary length
of steel rod which is medially bent to form an apex 118 of angular
disposition equal to the angular relation of the adjacent grill
bars 102, 104 to be connected. The pin 116 is fabricated of an
elongated steel rod of cross-sectional diameter less than the
cross-sectional diameter of the respective central bores 110, 112
to thereby permit ready insertion of the pin ends 120, 122
respectively within the bores 110, 112. The pin bends inwardly
intermediate the ends 120, 122 and the apex 118 to form a pair of
restrictive bends 124, 126 for grill connection purposes. As best
seen in FIG. 6, the bent pin 116 serves to strengthen and secure
the mitered joint 100 by inserting within the central bores 110,
112 until the apex 118 enters the common opening 128 formed by the
communication of the ends of the central bores 110, 112 at the top
edge 114 of the joint.
It will be appreciated that the pin ends 120, 122 easily insert
within the central bores 110, 112 inasmuch as the diameter of the
pin is less than the diameter of the bores. As illustrated, the
bends 124, 126 bind against the periphery of the respective bores
110, 112 to thereby restrict relative movement between the pin 116
and the grill bars 102, 104. The natural spring of the bent pin
construction permits the pin ends 120, 122 to be forced into the
grill bores 110, 112 respectively. The bias of the pin material
acting at the bends 124, 126 thus serves to prevent the joint from
being pulled apart due to the action of frictional forces between
each bend 124, 126 and the adjacent peripheral construction of the
bores 110, 112. Thus it is seen that an extremely simple
construction can be utilized to fabricate an extremely strong
diamond shaped joint. The communicating bores 110, 112 at the joint
edge 114, provide adequate recess space to receive the entire apex
118 of the pin 116 so as not to interfere with grill attachment
methods. The undersized construction of the pin with respect to the
diameter of the bores facilitates easy and rapid fabrication of the
mitered, diamond shaped joint 100 to thus provide a strong,
especially rigid and permanent joint construction.
Referring now to FIGS. 7, 8 and 9, I show another modified joint
construction that finds special utility when dealing with
decorative grill bars of exceptionally flat construction wherein
the greatest dimension perpendicular to the flat axis approaches
three-sixteenths of an inch. A pair of flat, decorative grill bars
130, 132, for example having cross-sectional dimensions of
three-sixteenths of an inch by five-eighths of an inch and suitable
for use within spaced pairs of insulating glass similar to that
illustrated in FIG. 3 are employed to form a mitered joint 134 for
use with diamond shaped grills.
Each flat grill bar 130, 132 is drilled or otherwise provided with
a longitudinal, axially extending, central bore 136, 138, having a
cross-sectional diameter of approximately one-sixteenth of an inch.
In view of the required small cross-sectional dimension of the
respective central bores 136, 138 necessitated by the flatness of
the grill bar construction itself, prior workers have found it
extremely difficult to work to the same tolerances, usually in the
range of plus or minus .002 inches, as is common in other grill bar
construction joints. In order to avoid the difficulties occasioned
by close tolerances in small dimensions, a novel bent pin 140 of
elongated, half-round steel construction has been employed. The pin
140 is fabricated with a flat, diametrical edge 142 and a rounded,
semi-cylindrical edge 144 sized to readily fit within the
one-sixteenth inch bores 136, 138 of the flat grill bars 130, 132
without undue binding. By utilizing such a pin configuration, I
have found that tolerances of plus or minus three-one thousandths
of an inch can be employed without looseness, flexing or other
objectionable joint features.
Similar to the construction illustrated in FIG. 4, the bent pin 140
medially bends at the apex 146 intermediate the pin ends 148, 150.
Each pin leg 152, 154 respectively bends out of alignment at 156,
158 for grill bar, central bore restricting purposes in the same
manner as hereinbefore described at FIG. 10.
Referring now to FIG. 8, the pin 140, is illustrated in position
with the pin ends 148, 150 respectively inserted within the central
bores 136, 138. The respective bends 156, 158 restrict against the
sides of the central bores 136, 138 and the bias of the pin steel
construction serves to prevent the bars 130, 132 from pulling
relative to the pin 140. The central bores 136, 138 communicate at
the top edge 160 to provide a top recess 162 which is of adequate
size to receive the pin apex 146 therein. Each grill bar 130, 132
terminates upwardly in a mitered edge 164, 166 which are held in
edge to edge juxtaposition by the action of the pin 140 within the
communicating central bores 136, 138 to thereby provide a rigid,
easily assembled and sturdy mitered joint 134.
* * * * *