U.S. patent number 3,913,558 [Application Number 05/471,287] was granted by the patent office on 1975-10-21 for fireplace screen.
This patent grant is currently assigned to Pacific Fence and Wire Company. Invention is credited to Byron Lee Caldwell.
United States Patent |
3,913,558 |
Caldwell |
October 21, 1975 |
Fireplace screen
Abstract
Folding glass doors have a novel pivotal mounting for easy
removal for cleaning. An optional wire mesh curtain may be mounted
behind the doors. A draft control at the bottom of the frame is
adjustable by a foot or hand operated lever. Installation of the
frame is facilitated by an improved lintel bracket.
Inventors: |
Caldwell; Byron Lee (Boring,
OR) |
Assignee: |
Pacific Fence and Wire Company
(Portland, OR)
|
Family
ID: |
23871013 |
Appl.
No.: |
05/471,287 |
Filed: |
May 20, 1974 |
Current U.S.
Class: |
126/548;
126/549 |
Current CPC
Class: |
F24B
1/192 (20130101); F24B 13/004 (20130101) |
Current International
Class: |
F24C
15/04 (20060101); F24B 1/00 (20060101); F24B
1/192 (20060101); F24C 15/02 (20060101); F24C
015/04 () |
Field of
Search: |
;126/139,140,200,202
;160/DIG.8 ;49/388,501 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
721,104 |
|
Feb 1932 |
|
FR |
|
1,124,367 |
|
Aug 1968 |
|
GB |
|
Primary Examiner: O'Dea; William F.
Assistant Examiner: Joyce; Harold
Attorney, Agent or Firm: Schermerhorn; Lee R.
Claims
Having now described my invention and in what manner the same may
be used, what I claim as new and desire to secure by Letters Patent
is:
1. In a fireplace screen, a vertical frame having upper and lower
channel strips forming the upper and lower edges of a door opening,
a folding door in said opening comprising a pair of substantially
identical door panels, each of said door panels comprising a single
channel member bent to rectangular configuration with the flanges
of the channel directed outwardly, a vertical pivot rod welded in
the channel of said channel member along one vertical edge of the
panel and projecting beyond the upper and lower edges of the panel,
a pair of straight square bars welded in the channel of said
channel member along the horizontal upper and lower edges of the
panel, one end of each bar being welded to said pivot rod, a pair
of L-shaped square bars welded in the channel of said channel
member around the corners at the opposite vertical edge of said
panel, a hinge connecting said opposite vertical edges of the two
panels, and means pivotally mounting said vertical pivot rod of one
panel in said upper and lower channel strips, the projecting upper
and lower ends of the vertical pivot rod in the second panel being
slidable in said upper and lower channel strips.
2. A fireplace screen as defined in claim 1 including a glass pane
in said panel in the plane of said rectangular configuration, and
trim channel members on the vertical and horizontal edges of the
panel enclosing said panel channel member, pivot rod and bars and
overlying opposite faces of said glass pane to retain the glass
pane in the panel.
3. A fireplace screen as defined in claim 1 including a second
folding door similar to said first folding door, and centering
guides at mid length in said channel strips engageable with said
pivot rods in said second panels of both doors to hold the meeting
edges of the two doors in alignment with each other when the doors
are closed.
4. A fireplace screen as defined in claim 1, including a curtain
rod, a pair of wire mesh curtains slidable on said curtain rod,
hanger brackets for said curtain rod, and means supporting said
hanger brackets on said frame with said curtains disposed behind
said door opening.
5. A fireplace screen as defined in claim 1 including an apertured
draft control plate slidable in said frame beneath said door
opening, and a foot operated control for said plate comprising a
bell crank lever having a horizontal arm projecting from said frame
for up and down movement and a vertical arm connected to said
plate.
6. A fireplace screen as defined in claim 1 including a vertical
back plate on an upper portion of said frame having a vertical slot
therein, a lintel bracket having a horizontal T head on one end
thereof insertable in said slot, and a slot in the other end of
said bracket adapted to receive a screw in a fireplace lintel bar
to secure said frame to a fireplace.
7. A fireplace screen comprising a vertical frame, a back plate on
an upper portion of said frame having vertical slot therein, a
lintel bracket having a horizontal T-head on one end thereof
insertable in said slot, said T-head comprising a flat plate of
less thickness than the width of said slot having a wide head
portion wider than said slot and a narrow neck portion narrower
than said slot whereby said head portion will pass through said
slot in vertical position, the opposite end of said bracket
extending horizontally in a rearward direction and offset in a
vertical direction from said T head, and a longitudinal slot in
said opposite end adapted to receive a screw in a fireplace lintel
bar to secure said frame to a fireplace with said head portion in
horizontal position.
8. A fireplace screen as defined in claim 7 including a pair of
pressure clamps for securing the lower corners of said frame, each
pressure clamp comprising a slotted L-shaped bracket, a screw in
said slot securing one leg of said bracket to said frame, and a
setscrew in the other leg of the bracket arranged to clamp against
a vertical side wall in the fireplace.
Description
BACKGROUND OF THE INVENTION
This invention relates to a fireplace screen.
Fireplace screens of relatively simple and inexpensive construction
have heretofore lacked various desirable features such as glass
doors to close the fireplace opening and prevent loss of room heat
up the chimney when the fireplace is not in use, convenient foot
operated draft controls for glass door screens and convenient
attachment means for mounting the screen in the fireplace opening
without the services of a skilled mechanic.
The glass door type of screens heretofore provided have not had
doors that are readily removable for cleaning nor have they been
equipped with wire mesh curtains for optional use with the glass
doors in open position. The types of construction heretofore
employed have made the cost of such additional features prohibitive
for most users.
Objects of the present invention are, therefore, to provide an
improved fireplace screen, to provide a fireplace screen with glass
doors and an optional wire mesh curtain behind the doors, to
provide a fireplace screen having glass doors which are easily
removable for cleaning, to provide a foot operated draft control,
to provide an improved lintel bracket, and to provide a more
economical form of construction which makes the above features
possible without prohibitive cost.
SUMMARY OF THE INVENTION
In the present construction the fireplace opening is closed to
prevent loss of room heat by glass doors and a convenient foot
operated draft control device. A novel hinging arrangement makes
the doors readily removable for cleaning and simplifies the initial
assembly. A wire mesh curtain is provided for optional use when it
is desired to have the doors open. A new and improved lintel
bracket simplifies installation in the fireplace.
The invention will be better understood and the foregoing and other
objects and advantages will become apparent from the following
description of the preferred embodiment illustrated in the
accompanying drawings. Various changes may be made in the details
of construction and arrangement of parts and certain features may
be used without others. All such modifications within the scope of
the appended claims are included in the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view, with parts broken away, of a
fireplace screen embodying the invention;
FIG. 1A is a fragmentary perspective view showing a pressure clamp
for securing the bottom of the screen;
FIG. 2 is a fragmentary perspective view showing the lintel bracket
for securing the top of the screen;
FIG. 3 is a view similar to FIG. 1 with one of the doors removed to
show the optional curtain mesh behind the doors;
FIG. 4 is a fragmentary front elevation view with parts broken
away;
FIG. 5 is a view on the line 5--5 in FIg. 3;
FIG. 6 is an elevation view, with parts broken away, showing a
frame for a door panel;
FIG. 7 is a view on the line 7--7 in FIG. 6;
FIG. 8 is a view on the line 8--8 in FIG. 6;
FIG. 9 is a fragmentary view showing the method of forming the door
panel frame in FIG. 6;
FIG. 10 is a view on the line 10--10 in FIG. 1;
FIG. 11 is a fragmentary perspective view showing the draft
control; and
FIG. 12 is a view on the line 12--12 in FIG. 11.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The screen has a rectangular frame comprising an upper horizontal
channel membere 10 and a lower horizontal angle iron 11, as shown
in FIG. 10, and a pair of vertical angle irons 12, one of which
appears in FIG. 11. Upper channel member 10 is covered by a pair of
trim members 13 and 14 and the lower angle iron 11 is covered by a
trim member 15 which has draft openings 16. Each vertical angle
iron 12 is covered by a trim member 17. These trim members cover
the frame in FIGS. 1 and 3.
Means are provided for securing the frame across the fireplace
opening with the rear edges of trim members 13 and 17 abutting the
front face of the fireplace wall 20 as shown in FIGS. 1 and 3. The
top of the frame is secured by a pair of lintel brackets, one of
which is shown in FIG. 2. A back plate 21 having a vertical slot 22
is welded at its upper and lower ends to the back flanges of
channel member 10. Lintel bracket 23 comprises a horizontal flat
plate portion 24 having a longitudinal slot 25 which is preferably
open at its back end.
The front end of plate portion 24 is bent downward to form a
vertical portion 26 and projecting forward from the lower end of
portion 26 is a T-shaped key portion 27. The head of T portion 27
is rotated into vertical position for insertion in slot 22 as shown
in broken lines. Then the vertical end portion 26 may be turned
either upward or downward as desired to provide additional vertical
adjustment beyond the range of slot 22. When the head of T 27 is
horizontal, the bracket 23 is locked to back plate 21 but is
movable up and down in slot 22.
A screw 28 in slot 25 secures the bracket 23 to the underside of
metal lintel bar 30. Lintel bar 30 spans the top of the fireplace
opening and supports courses of brick 31 or other structural
material secured in position by the usual layers of mortar 32. Slot
25 provides forward and backward adjustment to hold the back edges
of trim members 13 and 17 against the front face of the fireplace
wall.
This construction provides a convenient and simplified connection
between the top of the fireplace screen frame and the lintel bar
with only one screw in each bracket and ample vertical and
horizontal adjustments to accommodate variations in the
configuration and dimensions of the fireplace opening. Insulating
material 33 may be inserted in hollow trim members 13 and 17 to
provide an air seal against the brickwork 31 and 20.
Each lower corner of the screen is secured by a pressure clamp as
shown in FIG. 1A. An L-shaped bracket 35 is attached to lower angle
iron 11 by a screw 36 in a horizontal slot 37 in one leg of the
bracket. The other leg of the bracket extends in a rearward
direction and is equipped with a setscrew 38 to clamp against the
vertical side wall 40 in the fireplace. Thus, the frame of the
fireplace screen is mounted securely in the fireplace opening by
means of two lintel brackets as shown in FIG. 2 and two pressure
clamps as shown in FIG. 1A to provide a safe and rigid
structure.
The fireplace screen includes a pair of folding doors, each having
a panel A hinged at one edge to the screen frame and a panel B
connected to the swinging edge of panel A by piano hinge 42 as
shown in FIG. 4. Each panel is fitted with a pane of heat-resistant
glass 43.
The frames of both panels A and B are of identical construction as
shown in FIG. 6. Referring also to FIG. 9, a panel frame is formed
by cutting 90.degree. notches 46 at intervals in the side flanges
of a U-shaped channel member 45 so that the web portion of the
channel may be bent at an angle of 90.degree. as indicated in
broken lines. Each such 90.degree. bend forms a corner of the panel
frame, the ends of the channel member 45 being similarly beveled
and brought together at 47 in FIG. 6.
Two of the corners of the panel frame are stiffened by square
L-shaped angle bars 48 spot welded between the flanges of the
channel member 45 as shown in FIGS. 6 and 7. A round pivot rod 50
is spot welded between the flanges of the channel member on one
vertical side of the frame and the corners on this side are
stiffened by a pair of straight square bars 51. The ends of bars 51
are welded to one side of pivot rod 50 and the opposite sides of
bars 51 are spot welded to the flanges of channel member 45 as
shown in FIG. 8.
Two such frames as shown in FIG. 6 form a pair of panels A and B,
the edge 42a of one frame being connected to the corresponding edge
of another frame by the piano hinge 42 in FIG. 4. In panel A the
pivot rod 50 forms part of a hinge for mounting the double door and
in the panel B the pivot rod 50 provides a guide member for the
free edge of the panel. For the latter purpose the projecting upper
and lower ends of rod 50 in panel B are fitted with sleeve bushings
52 of suitable plastic such as Nylon. These bushings are omitted on
rod 50 in panel A. The projecting lower ends of rods 50 on both
panels are preferably slightly longer that the projecting portions
of the upper ends.
As shown in FIG. 7, a complete door panel includes the pane of
glass 43 with its edges enclosed and protected by a plastic channel
strip 54. The glass is retained in the frame 45 by vertical and
horizontal channel-shaped trim members 55 which overlap the edges
of the glass around its periphery.
Upper and lower guide bushings 52 in FIG. 6 travel in upper and
lower frame channels 60 and 61 in FIG. 10. Referring also to FIG.
4, an inclined leaf spring 62 is mounted in each end of each
channel 60 and 61. One end of spring 62 is secured to the web of
the channel by a bolt 63 and the other end inclines away from the
web of the channel and contains a hole 64 (FIGS. 10 and 12).
The doors are designed for easy snap-in installation and removal.
To install a door the panels A and B are folded together and the
lower end of rod 50 on panel A is inserted in hole 64 in spring 62
in lower channel 61. Then the upper end of this rod is moved along
channel 60 and under the upper spring 62 until the rod snaps into
hole 64, locking it in operative position.
The door is readily removable by moving it to three-quarter open
position. Then upper spring 62 is pressed upward with a finger,
releasing the upper end of rod 50 from hole 64 and allowing the
door to tip sideways out of upper channel 60. This allows the lower
end of rod 50 to be lifted out of hole 64 in lower spring 62. This
arrangement makes the doors easy to remove for cleaning by the user
from time to time and it also simplifies initial assembly thereby
reducing the cost.
A centering guide 65 is provided in the middle of each channel 60
and 61 as shown in FIG. 5. The centering guide is formed from a
short piece of channel stock which has its web portion secured in
the bottom of channel 60 or 61 by a bolt 66. The side flanges of
channel member 65 extend beyond the ends of its web portion and are
deflected in divergent relation to guide the bushings 52 on rods 50
into the centers of guide track channels 60 and 61 when the doors
are closed.
Centering guides 65 accurately align the mating edges of the two
panels B to impart a neat appearance. This allows the channels 60
and 61 to be somewhat wider than the bushings 52 for easy
installation and removal of the doors and provides greater
dimensional tolerance in general to simplify manufacture. Each
panel A is provided with a spring catch 67 as shown in FIGS. 3 and
4 to hold the doors in closed position.
Draft means are provided for supplying air to the fire when the
doors are closed. As shown in FIGS. 1 and 11, a stationary
apertured draft plate 70 has reversely bent upper and lower edges
to provide guides for a sliding apertured draft plate 71. The draft
is controlled by sliding the plate 71 to bring its openings into or
out of register with the openings in plate 70.
Sliding movement of draft plate 71 is controlled by a bell crank
foot lever 72 which is pivotally mounted on a pin 73 in a bracket
74 on vertical frame member 12. A vertical arm of bell crank lever
72 is connected by pin 75 with a bolt 76 in a tongue 77 on one end
of slide 71. A horizontal arm of bell crank lever 72 protrudes
through trim member 17 a short distance above the floor level so
that the lever may be easily shifted up or down by a simple foot
movement or by hand.
Still referring to FIG. 10, a pair of wire mesh curtains 80 is
provided as optional equipment when it is desired to operate the
fireplace with the doors open. Curtain 80 is supported by rings 81
for sliding movement on a horizontal rod 82 as manipulated by a
handle 83 on each curtain. Rod 82 is mounted at its ends in a
removable frame member 84 which is supported by hanger brackets 85
on studs 86 in upper frame member 10 and secured by nuts 87. These
parts form an attachment which may be provided to enhance the
utility of the fireplace screen.
* * * * *