U.S. patent number RE31,536 [Application Number 06/383,461] was granted by the patent office on 1984-03-13 for metal cladded window products.
Invention is credited to Joseph W. Holdiman, Douglas E. Justice.
United States Patent |
RE31,536 |
Holdiman , et al. |
March 13, 1984 |
Metal cladded window products
Abstract
This invention relates to a metal clad window product. The
window frame and sash are basically made of milled, elongated
wooden members with suitable interconnecting parts, such as
mortises and tenons, at the ends of the same. A metal cladding
member is attached to each elongated member before assembly of the
window parts. The metal cladding member has flanges formed integral
therewith which fit into rabbets in the sides of the elongated
wooden members forming the frame and sash parts to secure the
cladding to the part. The cladding includes an extension at one
edge thereof which forms with suitable stop members in the
assembled sash, a mounting for a glazing panel assembly. In the
case of the window frame, the extension forms the mounting of the
weather seal for sealing the sash to the window frame.
Inventors: |
Holdiman; Joseph W. (Dubuque,
IA), Justice; Douglas E. (Cedar Falls, IA) |
Family
ID: |
27010202 |
Appl.
No.: |
06/383,461 |
Filed: |
June 1, 1982 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
Reissue of: |
925162 |
Jul 17, 1978 |
04207707 |
Jun 17, 1980 |
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Current U.S.
Class: |
49/501;
49/504 |
Current CPC
Class: |
E06B
3/302 (20130101); E06B 3/984 (20130101) |
Current International
Class: |
E06B
3/30 (20060101); E06B 3/984 (20060101); E06B
3/96 (20060101); E06B 003/00 () |
Field of
Search: |
;49/501,504
;52/213,208,204,716 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Kannan; Philip C.
Claims
What we claim is:
1. A metal clad window sash comprising: a plurality of rails and
stiles forming the sash, each rail and stile being formed by an
elongated milled wooden member having front and rear surfaces and
an outwardly extending rabbet located on .[.each side.].
.Iadd.inner and outer sides .Iaddend.of said member between the
front and rear surfaces and extending the length thereof; a metal
cladding member mounted onto each of said elongated .Iadd.wooden
.Iaddend.members by means of a pair of spaced L-shaped flanges
formed integral therewith.Iadd., each flange having a free end
.Iaddend.with the free .[.arm.]. .Iadd.end .Iaddend.of said flange
being of a substantial length so as to be fitable into said rabbets
on said .Iadd.elongated wooden .Iaddend.members only by being slid
therein, thereby positioning said cladding member in full contact
with the milled front surface of said .Iadd.elongated
.Iaddend.wooden member over the extent of the width and the length
of said .Iadd.elongated wooden .Iaddend.member, said cladding
member having an extension .[.to the internal side of said
flanges.]. .Iadd.along its length which extends beyond the width of
the front surface adjacent the inner side of said elongated wooden
member.Iaddend.; the ends of said elongated .Iadd.wooden
.Iaddend.members forming the rails and stiles having mortises and
tenons selectively such that the .Iadd.elongated wooden
.Iaddend.members overlap and fit together at the ends to form
stiles and rails of the sash, said metal cladding member having
mitered ends which fit together in a mitered butt joint; stop
members positioned on .[.one.]. .Iadd.the inner .Iaddend.side of
each of the .Iadd.elongated wooden .Iaddend.members forming the
stiles and rails and spaced from and being parallel to the
extension of the cladding members to form a rabbet to receive a
glazing panel assembly; and sealing material positioned on said
wooden members beneath the mitered joint of the cladding members
.[.and sealed thereto.]. .Iadd.to seal said joint.Iaddend.; the
rabbets on the outer .[.edge.]. .Iadd.side .Iaddend.of said
.[.sash.]. .Iadd.elongated wooden members .Iaddend.having a
cross-sectional width greater than the thickness of the
.[.engaged.]. .Iadd.free .Iaddend.end of the L-shaped flange of the
.[.mtal.]. .Iadd.metal .Iaddend.cladding member fitting therein to
provide a loose fit of the cladding member on the elongated
.Iadd.wooden .Iaddend.member to permit movement between the rails
and stiles and said cladding member in the direction of the plane
of the front surface of said .Iadd.elongated .Iaddend.wooden
member.
2. The metal clad window sash of claim 1 in which the spaced
L-shaped flanges of the cladding members are non-flexible.
3. The metal clad window sash of claim 1 in which the .[.flanges
and.]. extensions of the cladding members are formed integral with
the cladding member.
4. The metal clad window sash of claim 3 in which the cladding
member is an extruded aluminum product.
5. The metal clad window sash of claim 1 in which the glazing panel
assembly is mounted in the rabbet formed by the extensions and the
stop members with a glazing material therein.
6. The metal clad window sash of claim 5 in which the extensions of
the cladding members have roughened surfaces facing the stop
members.
7. The metal clad window sash of claim 6 in which the outwardly
extending .[.open.]. rabbets located on the sides of the elongated
members are parallel to one another and disposed in the same plane.
.Iadd. 8. A metal clad window product comprising:
a plurality of elongated members interconnected to form the
configuration of a window frame or sash, each of said elongated
members having front and rear surfaces and first and second sides
located between said front and rear surfaces and a rabbet extending
in each of said first and second sides for the length of said
elongated member;
a metal cladding member coupled to each of said elongated members
to form a metal cladding surface over the front surface of each
elongated member, said metal cladding member including a metal
member having a width and length sufficient to cover said front
surface wherein said cladding member is in full contact with said
front surface, first and second flanges integrally formed on said
metal member so that said flanges are spaced from one another and
each extend the length of said metal member, and a metal extension
integrally formed with said metal member adjacent one of said
flanges and extending the length of said metal member adjacent to
the first side of said elongated member;
each metal cladding member being coupled to one of said elongated
members prior to their interconnection to form said configuration
solely by slidably engaging said flanges in said rabbets from one
end of the elongated member until the metal member is positioned
over the front surface of said elongated member along the entire
length and width of the elongated member;
each metal cladding member being formed to have mitered ends which
fit to form a mitered joint with adjacent metal cladding members on
the elongated members forming said configuration; and
sealing material positioned between said metal member and said
elongated member along each mitered joint to seal said mitered
joints. .Iaddend.
.Iadd. 9. The metal clad window product of claim 8 including a
sealing material coupled to said extensions along the length of
said extension. .Iaddend..Iadd. 10. The metal clad window product
of claim 8 further including a stop member coupled to the first
side of each elongated member and being spaced from and parallel to
the extension of the metal cladding member on said elongated
member, each said stop member and extension forming a rabbet to
enable said configuration to receive a glazing panel assembly.
.Iaddend. .Iadd. 11. The metal clad window sash of claim 10 further
including a sealing material located adjacent the extension of each
cladding member along its length to form a seal between the
extension and a glazing panel assembly when a glazing panel
assembly is disposed in the rabbets formed by said stop members and
extensions. .Iaddend.
Description
FIELD AND BACKGROUND OF THE INVENTION
Our invention relates to metal cladded wood products and more
particularly to wood products, such as windows or doors, in which
metal cladding is installed on the window parts before assembly of
the same into a completed product.
Windows and doors have been extensively made of wood, primarily
because it is easily milled and assembled and because it has an
attractive appearance. However, such material is subject to
weathering, particularly in external locations or on external
surfaces. To protect against such deterioration or weathering,
attempts have been made to apply a thin metallic surface, in the
form of a cladding surface, to the external surfaces of a product
of this type. The U.S. Pat. No. 3,815,285 shows an arrangement of
this type in which a metal cladding is applied to the exterior
surface after assembly of the wood product. This arrangement has
not proved completely satisfactory because of the costs of the
parts and the labor of installation as well as the fact that the
cladding is not permanently attached to the wood surface.
Other attempts have been made to apply a cladding material to a
portion of a milled part of a window product prior to assembly.
These have resulted in relatively structurally unsound window
components .[.because the cladding is fixed to the wood such as to
allow no differential expansion between materials.]..
SUMMARY OF PRESENT INVENTION
The present invention is directed to a window product in which the
rails, stiles, jambs, headers and sills are cut from wood stock and
milled in a conventional manner. In addition, rabbets are milled in
the elongated wooden members so that a preformed metal extrusion or
cladding may be attached to the facing surface of the elongated
members prior to assembly of the members into the frame and sash
parts of the window product. The wooden members are interconnected
through conventional mortise and tenons joints and the cladding,
which is .[.a.]. .Iadd.an .Iaddend.extrusion, has flanges
relatively loosely fitting into the rabbet to secure the cladding
to the individual pieces prior to the assembly of the parts. The
cladding has mitered joints or ends of the same which abut to form
a mitered joint with a suitable sealant material added below the
joint and to the wood surface to seal the metal joints to the wood
product. The loose fit of the flange of the cladding member into
the slot of the rabbet allows for relative expansion of the
materials, and the cladding is formed with an extension which, in
the case of the sash, provides a support for a glazing panel
assembly in the sash. In the case of the frame, the extension
mounts a seal or cushion to position the sash in the frame.
The improved arrangement in a metal clad window product overcomes
the objections in the prior art in that it overcomes time-consuming
methods of installation of cladding on existing window, or fitting
metal cladding to parts and securing the same thereto prior to
assembly. In the improved arrangement of parts, the metal cladding
is sized at the time the frame and sash parts are constructed and
it is slidably positioned thereon. The wooden parts are assembled
and secured in a conventional manner with the cladding parts mating
in mitered joints to which sealant material is applied. This
provides an attractive metal cladding window product which requires
a minimum use of members and a minimum of installation time.
Further, the metal cladding is so attached to the wooden frame
parts that it is relatively movable to a limited degree to allow
for a differential expansion therebetween insuring that the joints
and seals will be properly maintained.
IN THE DRAWINGS
FIG. 1 is a perspective view of a window frame and sash constructed
in accordance with the present invention;
FIG. 2 is a sectional view of the window of FIG. 1 taken along the
lines 2--2 therein;
FIG. 3 is a broken .[.prospective.]. .Iadd.perspective
.Iaddend.view of a sash constructed in accordance with the present
invention; and,
FIG. 4 is a cross-sectional perspective view of a corner of the
window of FIG. 1.
Description of the Preferred Embodiment
Our improved metal cladded window product is shown generally at 10
in FIG. 1. It is comprised of a sash 15 and a surrounding and
supporting frame 20 with the sash being adapted to be movable or
fixed relative thereto, depending upon the application of the same.
Frame 20 is comprised of the header 21, side jambs 22, and a sill
24 which may form a single unit or may be readily interconnected to
a similar frame for a double unit depending upon the application.
Similarly, the sash 15 is comprised of stiles 16 and rails 18
suitably interconnected to support a glazing panel assembly 25
which may take a variety of forms.
As will be best seen in FIGS. 2, 3, and 4, sash 15 or its rails 18
and stiles 16, are each formed of an elongated wooden member which
is suitably milled to provide a front and rear finished surface
with suitable mortises 34 and tenons 35 respectively, at alternate
ends of the same by means of which the rails and stiles may be held
in assembled relationship. The mortises and tenons are
interconnected to provide an overlapping wood joint which is
suitably secured by gluing, stapling, or other conventional means.
The elongated members forming the rails and stiles each have
rabbets 40, 41 on .[.each.]. .Iadd.an inner and outer .Iaddend.side
.Iadd.respectively, .Iaddend.of the .[.same.]. .Iadd.wooden member
.Iaddend.adjacent to the front face 30 of the elongated member.
.[.As can be seen in the Figures, at least the exposed rabbet 40 is
of much greater width than required for the flange to be inserted
therein. The purpose for this construction will be explained
below..].
A metal cladding member 50 is positioned over the front face 30 of
each stile and rail. The metal cladding member is preferably an
extruded metal product, such as aluminum, having a finished
surface. As will be seen in FIGS. 2, 3, and 4, the metal cladding
members 50 have a generally flat extent with a pair of L-shaped
flanges 51, 52 formed integral therewith and extending from one
side of the flat surface. These flanges have generally the same
dimensions. In addition to the flanges, the cladding member has an
extension 53 .Iadd.along its length .Iaddend.which extends
.Iadd.beyond the front face 30 adjacent the inner side of the
wooden member and which extends .Iaddend.beyond one of the flanges
51 thus placing flange 51 intermediate the width edges of the
cladding member, with the opposite flange 52 being disposed at one
edge of the cladding member. The extension 53 has a roughened
undersurface, as indicated at 54, for purposes to be later noted.
The flanges and extensions extend the complete length of the
cladding member and the cladding members are cut to correspond with
the length of the elongated wood members forming the rails and
stiles 18 and 16. When each cladding member is slipped over the
front surface of the respective elongated wood member, the general
extent of the inner side of the flat surface is disposed in contact
with the milled front face of the elongated member with the
L-shaped flanges 51, 52 .Iadd.each having a free end
.Iaddend.disposed in the rabbets 40, 41 respectively. The flanges
are of such a size that the cladding member must be slipped on
rather than snapped on as in prior art windows. This insures
positive locking and gives structural strength to the assembly. As
will be seen in FIG. 2, the rabbet 41 maybe of a larger dimension
than dimension of the rabbet 40. The flange 52 fitted in rabbet 41
is relatively loose .[.from front to back.]. so as to permit
movement between the cladding member in the .[.width and.]. length
direction of the flat surface and the elongated member to allow for
relative expansion between the materials forming the same. The
flanges, however, retain the cladding members on the elongated
members. The cladding members have a mitered extremity, as
indicated at 55, at either end of the same. The elongated members
forming the rails and stiles 18 and 16, are then assembled through
the mortise and tenon joints at the ends of the elongated members
to provide an overlap of the same. They are secured in assembled
relationship by gluing, stapling or by nailing.The cladding members
have mitered extremities which fit together in a mitered butt joint
and suitable sealant material, indicated at 60, is positioned on
the surface of the elongated members beneath the mitered butt
joints to seal the joints and prevent entrance of moisture between
the cladding members and the wood surfaces beneath the same.
The overall strength of the resulting sash with the
.[.overlaping.]. .Iadd.overlapping .Iaddend.cladding members is
greatly enhanced by the deep locking of the cladding member to the
frame. The frame parts or sash parts are secured in assembled
relationship with the cladding members forming a metal facing
surface for the same. After the sash has been assembled with the
cladding members thereon, suitable stop members 70 may be added to
the inner face of the opening formed in the stiles and rails. The
stop member 70 with the extension 53 of the cladding member forms
an outwardly extending open rabbet within which the glazing panel
.[.assemble.]. .Iadd.assembly .Iaddend.25 is positioned. Suitable
sealing material 71, such as glazing compound, will seal the
glazing panel assembly within this rabbet. If desired, suitable
screening, such as is shown at 75, may be mounted in the opening to
the opposite end of the stop member 70. The roughened surface 54 of
the extension aids in holding the glazing sealant 71 within the
rabbet to secure the glazing panel assembly therein.
Frame 20 is similarly formed of elongated milled wooden members
which form the header, jambs and sill 21, 22, 24 respectively.
These elongated members have milled front and rear surfaces along
the extent of the same with suitable means to connect the members
to form the frame at the ends of the members. Thus, they may
include mortise and tenons, or mitered joints or other equivalent
interconnecting surfaces. Similarly, the elongated members forming
the frame parts may be suitably secured by gluing, nailing, or
other means. The .Iadd.inner and outer .Iaddend.sides of the
elongated members forming the frame parts have outwardly extending
open rabbets 81, 82 .Iadd.respectively.Iaddend., therein, with the
cross-sectional shape of the elongated members being different from
that of the sash for the purpose of providing recessed opening in
which the sash will be positioned. Suitable cladding members 90 are
added to the front of the frame parts or the elongated members to
provide a metallic facing surface. As will be best seen in FIGS. 2
and 4, the cladding members 90 have flanges 85, 86 extending
therefrom with an extension 87 to one side of the cladding member
beyond the intermediate extension 85. In addition, these cladding
members have a projecting surface 88 in the sill, header and jamb
to space a portion of the cladding member from the front face of
the milled elongated member. These cladding members are slidably
positioned over the front face of the frame parts with the flanges
85, 86 riding in the open rabbets 81, 82 in the elongated members
to secure the same thereto. The cladding members 90 are added to
the frame parts of the window frame prior to the assembly of parts
in the complete frame, as header, jambs, and sill. They are slid
into position and the ends of the cladding members are mitered, as
at 95, to form butt joints between the cladding members as the
elongated members forming the frame parts are assembled and
secured. In the area of the joints .[.beneath the wood portions of
the frame parts.]. .Iadd.between the cladding members 90.Iaddend.,
suitable sealant material, such as 96 is added thereto. The
cladding members may also include a plowed or notched extremity
extending the length of the cladding member, as at 97, by means of
which adjacent frames may be attached or a double unit may be
provided as a window sill. Similarly, the extensions 87 of the
cladding member have bracketed extremites 89 by means of which
suitable weather stripping 92 may be mounted along the extent of
the same and surrounding the opening in the frame. Suitable trim
parts, such as stop member 98, may be added to the frame parts to
provide a stop for the sash when the sash is positioned therein.
The extensions with the weather stripping thereon form a seal for
the sash in the opening of the frame. Suitable hardware may be
added to the sash to pivot or otherwise mount the sash for movement
relative to the frame for varying types of windows or the sash may
be secured to the frame.
The improved window product construction provides an arrangement
and mounting of the metal cladding on the facing surface of the
frame and sash for protection to the exposed surface of the wooden
frame parts and to add decoration to the same eliminating the
problems of painting and maintenance. The cladding members, in
addition to adding an area of protection, further strengthen the
connections between the frame and sash parts and are relatively
loosely positioned therein to allow for differential expansion
between the materials forming the frame and sash. This eliminates
the problems of breaking of seals or the opening of joints to
detract from the appearance of the same.
In considering this invention it should be remembered that the
disclosure is illustrative only and the scope of the invention
should be determined by the appended claims.
* * * * *