U.S. patent number 3,574,980 [Application Number 04/821,683] was granted by the patent office on 1971-04-13 for shelf bracket for panelled walls.
This patent grant is currently assigned to Woodcarve Products, Inc.. Invention is credited to James R. Keller.
United States Patent |
3,574,980 |
Keller |
April 13, 1971 |
SHELF BRACKET FOR PANELLED WALLS
Abstract
A wooden construction is disclosed comprising a bracket
supported by a single screw in a grooved vertical standard. The
groove prevents the bracket from twisting on the screw. Screw holes
are provided at intervals in the bottom of the groove so that the
bracket may be shifted up or down on the standard. Portions of the
groove not occupied by the bracket are filled by a filler strip.
The back side of the standard has a central tongue to fit between
the edges of two adjacent wall panels whereby the standard also
serves as a molding strip to cover the joint between the
panels.
Inventors: |
Keller; James R. (Beaverton,
OR) |
Assignee: |
Woodcarve Products, Inc. (Palo
Alto, CA)
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Family
ID: |
25234035 |
Appl.
No.: |
04/821,683 |
Filed: |
May 5, 1969 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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758824 |
Sep 10, 1968 |
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Current U.S.
Class: |
52/36.5; 108/108;
52/468; 248/243 |
Current CPC
Class: |
A47B
57/46 (20130101) |
Current International
Class: |
A47B
57/46 (20060101); A47B 57/00 (20060101); A47g
029/02 () |
Field of
Search: |
;248/235,241,243,239,248,247 ;108/106,107,108,109 ;287/20.92
;52/36,468 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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13,765 |
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1889 |
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GB |
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155,268 |
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Jul 1956 |
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SW |
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Primary Examiner: Allen; Edward C.
Assistant Examiner: Foss; J. Franklin
Parent Case Text
CROSS REFERENCES TO RELATED APPLICATIONS
This application is a continuation-in-part of my copending
application, Ser. No. 758,824, filed Sept. 10, 1968, on "Adjustable
Shelf Bracket" now abandoned.
Claims
I claim:
1. A wooden shelf bracket construction having a single screw height
adjustment comprising a longitudinally grooved vertical standard
having inclined vertically spaced screw holes in the bottom of the
groove, a shelf bracket having a thickness to fit in said groove,
the base end of said bracket being seated in said groove, said
bracket having a single inclined screw hole therein with an upper
end emergent through the top surface of the bracket and a lower end
emergent through said base end, a screw extending through said
bracket screw hole and having threaded engagement with one of said
screw holes in said standard, a filler strip in portions of said
groove not occupied by said bracket, horizontal screw holes in the
bottom of said groove receiving screws to secure the standard to a
wall stud, a longitudinal tongue on the opposite side of said
standard from said groove, and a pair of wall panels having
adjacent vertical edges abutting opposite sides of said tongue,
said standard forming a molding strip covering the joint between
said panels.
2. A construction as defined in claim 1, said bracket screw hole
having a counterbore in its upper end to receive the head of said
screw.
Description
BACKGROUND OF THE INVENTION
This invention relates to an improved construction for an
adjustable shelf bracket made of wood.
Wood construction, although more attractive and desirable for many
purposes, has become largely supplanted by metal construction
because of the decreasing cost of metal fabrication and the
increasing cost of wood fabrication. For this reason, shelf
brackets are usually made of metal. A need exists for wooden shelf
brackets to harmonize with wooden wall panelling and wood
cabinets.
Objects of the invention are, therefore, to provide an improved
adjustable shelf bracket of wooden construction, to provide an
economical form of wooden construction which is competitive in
price with metal, to provide a wooden shelf bracket and supporting
standard which can be made in quantity by pantograph type wood
carving machines, to provide a standard for a shelf bracket which
may be used as a molding strip to cover a vertical joint between
adjacent wall panels and to provide a wooden shelf bracket which is
attractive in appearance, sturdy and solid, readily adjustable and
which requires but a single screw for mounting it on the
standard.
SUMMARY OF THE INVENTION
The present construction involves simply two vertical standards,
two horizontal brackets and two wood screws. The face side of each
standard is provided with a vertical groove to fit the base end of
the bracket and prevent the bracket from twisting on its single
supporting screw. The groove is provided with screw holes at
intervals for vertical adjustment of the bracket and a filler strip
is provided to fill portions of the groove not occupied by the
bracket. The back of the standard has a tongue to fit between
adjacent wall panels whereby the standard may serve as a molding
strip to cover the joint between the panels.
The wood shaping operations on the parts may be performed on a
number of pieces simultaneously by a pantograph type wood carving
machine whereby the cost of the bracket and the standard may be
made competitive with low cost metal equipment. The wood parts are
more attractive for use in the home, office and other purposes than
are metal parts, since the wood may be finished to harmonize with
wood panelling, cabinets and furnishings in the room.
The invention will be better understood and still other objects and
advantages will become apparent from the following description of
the preferred embodiment illustrated on the accompanying drawing.
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 DRAWING
FIG. 1 is a perspective view showing shelves supported on
adjustable shelf brackets embodying the principles of the
invention;
FIG. 2 is a side elevation view of one of the standards and
brackets with parts broken away;
FIG. 3 is a sectional view on the line 3-3 in FIG. 2; and
FIG. 4 is a fragmentary perspective view.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown in FIG. 1, the present construction comprises a pair of
vertical standards 10 and pairs of horizontal brackets 11 to
support the shelves 12. The face side of each standard 10 is
provided with a vertical groove 13 of rectangular cross section.
The groove 13 has a flat bottom surface 15 and flat side surfaces
16 perpendicular to the surface 15. Groove 13 is of a width to
receive the thickness of bracket 11, the base end of the bracket
being seated in the groove.
Inclined screw holes 17 are drilled at intervals in the groove
bottom surface 15 and a larger inclined screw hole 18 is drilled in
bracket 11 to receive screw 20. The outer end of hole 18 is
counterbored at 21 in the top surface of the bracket to receive the
head of the screw. Counterbore 21 forms a shoulder 22 under the
screw head whereby the base end 23 of the bracket is clamped firmly
against groove bottom surface 15.
Standards 10 may be made with a flat and tongueless back side for
mounting in a bookcase, cabinet or on a wall surface as desired.
Such mounting may be accomplished by additional screws 24 in
horizontal screw holes 25 in the bottom of groove 13 or by other
suitable means. Bracket 11 may be raised or lowered by merely
shifting screw 20 to an appropriate one of the holes 17. The inner
end 23 of the bracket seats against groove bottom surface 15 and
the lateral groove surfaces 16 hold the bracket in stable position
and prevent it from twisting on the screw without the necessity of
a second screw. Counterbore 21 emerges through the top surface of
the bracket and serves to countersink the head of the screw. Shelf
12 may be screwed to bracket 11, left unattached or secured by
other suitable means.
In the present embodiment, the back side of standard 10 is provided
with a longitudinal tongue 30 to fit between adjacent edges of wall
panels 31 whereby the standard 10 serves as a molding strip to
cover the vertical joint between the panels. The screws 23 then
secure the standard 10 directly to wall stud 32. After standard 10
has been mounted and brackets 11 adjusted to desired position,
filler strips 35 are inserted in exposed portions of the groove 13.
These filler strips cover the heads of screws 24 and the screw
holes 17 and impart a neat and trim appearance to the structure.
The filler strips are preferably secured in place by a suitable
adhesive. Shelf brackets are seldom changed in position after
initial adjustment but readjustment presents no problem as the
filler strips 35 may be readily pried out of grooves 13 to permit
shifting the brackets up or down when desired.
The shaping operations on the standards and brackets may be
performed simultaneously on a plurality of pieces by machines
having a gang of cutters to effect an economy over the conventional
woodworking method of making one piece at a time. Holes 17 may be
drilled by a machine which spaces the holes accurately so that any
number of the brackets 11 may be aligned horizontally on their
respective standards without measuring or drilling any holes when
the brackets are installed or adjusted by the user. This
arrangement provides the same convenience of adjustability found in
factory built metal shelving.
* * * * *