U.S. patent number 3,652,048 [Application Number 05/061,547] was granted by the patent office on 1972-03-28 for vertically adjustable wall bracket assembly for mounting a shelf.
This patent grant is currently assigned to Hartman Wood Products Inc.. Invention is credited to Lawrence Hartman.
United States Patent |
3,652,048 |
Hartman |
March 28, 1972 |
**Please see images for:
( Certificate of Correction ) ** |
VERTICALLY ADJUSTABLE WALL BRACKET ASSEMBLY FOR MOUNTING A
SHELF
Abstract
A vertically adjustable wall bracket assembly for mounting a
shelf having two or more elongated support members adapted to be
mounted vertically on a wall, each support member having a
vertically disposed T-shaped channel with an anchor plate slidably
disposed therein, means on the anchor plate to secure the anchor
plate inside the T-shaped channel at any vertical height, and means
to attach the anchor plate to a shelf supporting bracket, the shelf
supporting bracket being arranged for use as a support for a
shelf.
Inventors: |
Hartman; Lawrence (Royal Oak,
MI) |
Assignee: |
Hartman Wood Products Inc.
(Royal Oak, MI)
|
Family
ID: |
22036465 |
Appl.
No.: |
05/061,547 |
Filed: |
August 6, 1970 |
Current U.S.
Class: |
248/243;
248/297.21; 211/90.04; 108/108; 248/245 |
Current CPC
Class: |
A47B
57/565 (20130101) |
Current International
Class: |
A47B
57/56 (20060101); A47B 57/00 (20060101); A47g
029/02 () |
Field of
Search: |
;248/243,241,244,245,246
;108/108,107,106,109,152 ;52/36 ;211/90,148 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Foss; J. Franklin
Claims
What is claimed is:
1. A vertically adjustable wall bracket assembly for mounting one
or more shelves on a wall, comprising:
at least two elongated support members;
first means for securing said support members vertically on the
wall;
each support member having a longitudinal T-shaped channel with the
smaller width leg portion thereof opening from the outer surface of
the support member opposite the wall abutting surface thereof;
a rectangular elongated metal channel having a longitudinal groove
inserted in the larger width head portion of the T-shaped channel
of the support member so that the longitudinal groove of the metal
channel registers with the smaller width leg portion of the
T-shaped channel;
at least one shelf supporting bracket;
an anchor plate slidably carried in said metal channel;
second means for locking the anchor plate in any adjusted
longitudinal position in said metal channel, said second means
comprising at least one set screw member threadably engaged with
the anchor plate and abutting against the inner base surface of the
metal channel, thereby urging the anchor plate outwardly to
frictionally engage its edges with the lower edge surfaces of the
elongated metal channel adjacent its longitudinal groove to lock
the anchor plate against longitudinal displacement; and
third means for securing a shelf supporting bracket to the anchor
plate.
2. The invention according to claim 1 wherein said third means
comprises:
one or more screws with enlarged heads, the screws being adjustably
threadably engaged with the anchor plate with their enlarged heads
protruding outwardly through the longitudinal groove of the metal
channel member and the leg portion of the anchor plate T-shaped
channel;
a recess in one surface of said shelf supporting bracket closed by
a mounting plate secured to the bracket and flush with said one
surface;
keyhole openings in said mounting plate and registering for
engagement with the enlarged heads of the screws engaged with said
anchor plate.
3. The invention according to claim 1 wherein said first means
comprises one or more holes punched through said metal channel and
the rear surface of said support members, the edges of the hole
through the metal channel tapering rearwardly into and gripping the
said support member, and screw members inserted through said holes
for further attaching said metal channel to said support member and
said support member to said wall.
4. A vertically adjustable wall bracket assembly for mounting one
or more shelves on a wall, comprising:
at least two elongated support members, each support member having
a longitudinal T-shaped channel with the smaller width leg portion
thereof opening from the outer surface of the support member
opposite the wall abutting surface thereof;
at least one shelf supporting bracket;
an anchor plate slidably carried in the T-shaped channel of the
support member;
second means for locking the anchor plate in any adjusted
longitudinal position in the T-shaped channel, said second means
comprising at least one set screw member threadably engaged with
the anchor plate and abutting against the inner surface of the
T-shaped channel, thereby urging the anchor plate outwardly to
frictionally engage its edges with the inner edge surfaces of the
T-shaped channel adjacent its leg portion to lock the anchor plate
against longitudinal displacement; and
third means independent of said set screw member for securing said
shelf supporting bracket to the anchor plate whereby said anchor
plate can be first locked into position with respect to said
support members and then said shelf supporting bracket can be
secured to said anchor plate
5. The invention according to claim 4 wherein said first means
comprises one or more holes punched through said support members
and screw members inserted through said holes for attaching said
support members to said wall.
6. The invention according to claim 4 wherein said third means
comprises:
at least one screw with an enlarged head, said screw being
adjustably threadably engaged with the anchor plate with its
enlarged head protruding outwardly through the leg portion of the
T-shaped channel;
a mounting plate on one surface of said shelf supporting bracket
secured to the bracket and flush with said one surface; and
keyhole openings in said mounting plate and registering for
engagement with the enlarged head of the screw engaged with said
anchor plate.
Description
BACKGROUND OF THE INVENTION
I. Field of the Invention
This invention relates to adjustable wall bracket assemblies for
mounting shelves and the like, and more particular to infinitely
vertically adjustable wall bracket assemblies thereby providing any
desired vertical positioning of shelves and the like.
II. Description of the Prior Art
In the prior art vertically adjustable wall bracket assemblies for
mounting shelves have been devised in which two or more elongated
support members are vertically mounted on a wall. The support
members contain a plurality of openings, usually in the form of
slots, into which supporting brackets for the shelves may be
inserted and locked. To alter the vertical positioning of a shelf,
it is necessary to remove it and disengage the shelf supporting
brackets from the slots in the wall mounted support member, which
is oftentimes a difficult and laborious procedure. A new position
for the shelf must be determined and the shelf supporting brackets
reinserted into new slots in the support members and the shelves
then replaced. However, there are several inherent disadvantages in
this type of assembly for mounting shelves. The wall brackets must
be mounted very accurately, parallel to each other, otherwise the
slots in the support members will not be horizontally aligned and
the shelves will be tilted. Secondly, in order to support any
reasonable weight on a shelf, it is necessary to provide a rather
tight fitting locking engagement between the shelf supporting
brackets and the support members. In view of this, it is often
difficult and time consuming to separate the shelf supporting
bracket from the wall bracket.
Another disadvantage of many slotted bracket systems is that the
weight of the shelves often causes the metal in the slot area to
bend out, permitting the shelves to sag. Also, it is often
difficult to assure accurate alignment of the slots of a plurality
of support members, which is required to keep the shelves
horizontal.
Finally, it is often desirable to mount a shelf at some vertical
height intermediate two sets of slots, which cannot be done due to
the limitation of a finite number of vertical slots available.
SUMMARY OF THE INVENTION
Generally, two or more support members, each having a longitudinal
T-shaped channel, are mounted vertically on a wall so that the
smaller width leg of the T-shaped channel forms a longitudinal
groove on the outward face of the support members. An elongated
generally rectangular metal channel, having a longitudinal groove,
may be placed in that larger width head portion of the T-shaped
channel so that the longitudinal groove of the metal channel
registers with the smaller width leg portion of the T-shaped
channel.
A preferably elongated anchor plate, slidably carried in the metal
channel is then adjusted to the desired height and locked in place
by tightening a set screw in the anchor plate against the rear
inner surface of the metal channel, thereby forcing the forward
edges of the anchor plate to frictionally engage with the forward
inner edge surfaces of the metal channel adjacent the groove. The
anchor plate also holds one or more screws with enlarged heads so
that the enlarged heads of the screws protrude through the smaller
width leg portion of the T-shaped channel and outwardly of the
forward surface of the supporting members. A shelf supporting
bracket, having a rear mounting plate with keyhole openings
fastened on a stepped recess, is then locked to the anchor plate by
engaging the enlarged heads of the screws with the keyhole openings
of the mounting plate.
A shelf board is then placed across the shelf supporting
bracket.
In view of the disadvantages of shelf support systems heretofore in
common use, it is therefore a primary object of the invention to
provide a vertically adjustable wall bracket assembly for mounting
shelves and the like, comprising at least two support members for
mounting at least two shelf supporting brackets at any desired
vertical position.
Another object of the invention is to provide a vertically
adjustable wall bracket assembly for mounting shelves and the like
in which each shelf supporting bracket may be independently
vertically adjusted to any vertical height along the wall mounted
support member, thereby eliminating the necessity of absolute
parallelism or other alignment of the support members in order to
obtain a horizontal shelf.
Another object of the invention is to provide a shelf supporting
bracket which is readily installed and removed from the wall
mounted support member.
Another object of the invention is to provide a vertically
adjustable wall bracket assembly for mounting shelves and the like
in which the wall mounted support member has adjustable means for
tightening of the connection between it and the shelf supporting
bracket.
Another object of the present invention is to provide a vertically
adjustable wall bracket assembly for mounting shelves and the like
which may be installed and adjusted by an unskilled persons using
only simple tools, such as a screw driver.
DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the invention, reference may
be had to the accompanying drawings in which like reference
characters refer to like parts throughout the several views, and in
which:
FIG. 1 is a perspective frontal view of assembled wall mounted
support members and shelf supporting brackets with a shelf-board
supported by the brackets;
FIG. 2 is an exploded perspective view illustrating the shelf
supporting bracket and the means by which the shelf supporting
bracket is attached to the wall mounted support member;
FIG. 3 is an elevational view of the rear surface of the shelf
supporting bracket;
FIG. 4 is an exploded perspective view of the wall bracket assembly
illustrating the means by which the support member is attached to
the wall and adapted to carry the shelf supporting bracket;
FIG. 5 is a cross-sectional view taken substantially along line
5--5 of FIG. 1; and
FIG. 6 is a cross-sectional view taken substantially along line
6--6 of FIG. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown, the vertically adjustable wall bracket assembly for
mounting a shelf comprises at least two elongated support members
10 and 12 fastened vertically against a wall 14. As shown, these
members are made of wood, but they may also be made from
roll-formed metal. Since the support members 10 and 12 are
substantially identical, a description of the member 10 will
suffice as a description of both. The support member 10 has a
substantially flat rear surface 16 which abuts the wall 14 when
installed, a substantially flat front surface 18 which is
preferably parallel the rear surface 14 and engages a shelf
supporting bracket 20. Side surfaces 22 and 24 of the support
member 10 serve no functional purpose, but may be utilized for
decoration or styling.
Preferably midway between the side surfaces 22 and 24 on the
support member, as shown in FIGS. 4-6, and elongated T-shaped
channel 26 is longitudinally routed out of the support member 10 so
that the bottom of the "T" forms a longitudinal groove 28 in the
front surface 18. An elongated metal, generally rectangular,
channel member 30, having a longitudinal groove 32 to provide an
opening to the inside of the channel member 30 in conjunction with
the groove 28, is closely fitted into the head portion of the "T"
of the T-shaped channel 26. After the metal channel 30 has been
longitudinally inserted into the T-shaped channel 26 of the support
member 10, a number of holes 34 may be punched or extruded through
the metal channel 30 and the wooden support member 10, as seen in
FIG. 6, to form a frustoconical shaped or tapered portion 36 at the
point of extrusion, and the hole 34 opens through the rear surface
16 of the support member 10. The tapered portion 36 has a twofold
purpose; first, it serves to grip the support member 10 and firmly
retain the metal channel 30 to the support member 10 against
longitudinal displacement and secondly, it serves as a countersink
for a screw 40 which is used to secure the support member 10
against the wall 14, so that the head of the screws 40 will not
interfere with the other components of the assembly.
An elongated barlike anchor plate 42 is sized to slidably fit into
the metal channel 30, as shown in FIG. 4. A hole 44 is provided
preferably near the center of the anchor plate 42 and is threaded
as at 46 to be engaged by the threads 48 of a set screw 50. In
addition, two other holes 52 and 54 are provided as shown, threaded
as at 56 and 58, to be engaged by the threads 60 and 62 of screws
64 and 66 having enlarged diameter head portions 65 and 67
respectively. The screws 64 and 66 are preferably disposed on each
side of the hole 44 and on a longitudinal center line passing
therethrough. The purpose and operation of the anchor plate 42 and
the parts attached to it will be later described in detail.
The shelf supporting bracket 20, shown in FIGS. 2 and 3, is
preferably made of wood and has two substantially flat and
perpendicular surfaces 68 and 70. The upper surface 68 of the shelf
supporting bracket 20 lies in a horizontal plane, when assembled,
and is utilized to support a shelf board 72, as shown in FIG.
1.
A trapezoidal groove 200 may be routed through the upper surface 68
of the shelf supporting bracket 20 to be engaged by the heads 206
of screws 204 which are screwed into the bottom side of the shelf
board 72 providing a strong mechanical engagement between the shelf
board 72 and the shelf supporting bracket 20.
The rear surface 70 of the shelf supporting bracket 20 lies in a
vertical plane and, when assembled, abuts against the outer surface
18 of the support member 10. An elongated, generally oval shaped,
stepped recess 74 is formed on a vertical centerline in the rear
surface 70 of the shelf supporting bracket 20, thereby providing a
generally oval-shaped shoulder 78, as best shown in FIGS. 2 and 5.
A metal plate 80, having an oval shape and thickness substantially
identical to the shape and depth of the larger portion of the
recess 74 is inserted therein so that when it rests on the shoulder
78 it is flush with the surface 70 of the shelf supporting bracket
20. Preferably, three screws 82, 84 and 86 inserted through three
countersunk holes 88, 90 and 92, in the plate 30 respectively, are
screwed into the inner surface of the recess 74 to secure the plate
80 to the shelf supporting bracket 20. Two keyhole openings 96 and
98 are formed in the plate 80, having generally circular lower
portions 100 with a diameter large enough so that the heads 65 and
67 of the screws 64 and 66 extending from the anchor plate 42, may
easily pass through, the bracket 20 then being pushed downward to
engage the screw threads 60 and 62 64 and 66 of the screws 60 in
the smaller portions 104 and 106 of the keyhole openings 96 and 98
to thereby affix the bracket 20 to the anchor plate 42 on
assembly.
In summary, the fabrication and complete assembly of the invention
is as follows: the support members 10 and 12 are each preferably
factory formed and the T-shaped channel 26 is routed in. The metal
channel 30 is inserted lengthwise into the T-shaped channel 26 and
the countersunk holes 34 are punched through. Each of the assembled
structures is secured to the wall 14 by the screws 40 in a
generally vertical position. The anchor plate 42 is then inserted
lengthwise into the metal channel 30 and adjusted to the desired
shelf height. The set screw 50 is then tightened against the rear
inner surface 108 of the channel 30, thereby forcing front edges
110 of the anchor plate 42 to engage the front inner surface 112 of
the channel 30, as best shown in FIG. 5. The elongated nature of
the anchor plate 42 provides a long edge surface 110, thereby
providing a firm frictional engagement between the two surfaces 110
and 112 capable of supporting comparatively heavy loads. The screws
64 and 66 are then screwed into holes 52 and 54 of the anchor plate
42 with their heads extending outwardly enough to engage with the
keyhole openings of the shelf supporting bracket plate 80.
A shelf supporting bracket, with the plate 80 properly secured
thereto by the screws 82, 84 and 86, may then be attached to each
of the wall brackets 10 and 12 by engaging the heads 65 and 67 of
the screws 64 and 66 with the keyhole openings of the plate 80 and
pushing the shelf bracket 20, downwardly thus firmly locking the
shelf bracket 20 to the support member 10. If a stronger engagement
between the shelf 72 and the shelf supporting bracket 20 is
desired, the screws 204 may be screwed into the bottom side of the
shelf 72 and the screw heads 206 may be inserted into the
trapezoidal grooves 200 of a pair of brackets prior to the
engagement of shelf supporting brackets 20 with the supporting
members 10 and 12. In this way the shelves 72 are securely locked
in place and cannot be removed without removing the brackets
20.
If the screws 204 are not used with shelf supporting brackets 20
similarly installed on each support member 10 and 12 at
substantially the same vertical height, a shelf board 72 is then
placed on the upper surfaces 68 of the shelf supporting brackets
20, to complete the shelf assembly. Vertical adjustment to level
the shelves can then be made by loosening the set screws 50 and
moving the anchor plates 42 vertically before again tightening the
set screws 50. The anchor plate 42 can, of course, be removed at
this point by grasping and moving the bracket 20.
It will be apparent that a number of shelves may be mounted to each
set of support members. It should also be obvious that any shelf
height, within the limits of the wall brackets 10 and 12, may be
obtained with the use of convenient tools by merely lifting the
shelf supporting brackets 20 off the the screws 64 and 66,
loosening the set screws 50, adjusting the anchor plates 42 to new
positions, retightening the set screws 50, and re-installing the
shelf supporting brackets 20.
It will be apparent that the foregoing description of the invention
is for illustrative purposes only and that modifications and
alterations may be made to the invention by those skilled in the
art without departing from the spirit of the inventions or the
scope of the appended claims.
* * * * *