US3652048A

US3652048A - Vertically adjustable wall bracket assembly for mounting a shelf

Info

Publication number: US3652048A
Application number: US61547A
Authority: US
Inventors: Lawrence Hartman
Original assignee: HARTMAN WOOD PRODUCTS Inc
Current assignee: HARTMAN WOOD PRODUCTS Inc
Priority date: 1970-08-06
Filing date: 1970-08-06
Publication date: 1972-03-28
Anticipated expiration: 1989-03-28

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.

Description

llite t es 1e Hartman 51 ar. 2a, 1972 [54] VERTllCAlLLY ADJUSTALE WALL BRACKET ASSEMLY FOR MOUNTING A SHELF [72] Inventor:

[73] Assignee:

Lawrence Hartman, Royal Oak, Mich.

Hartman Wood Products Inc., Royal Oak, Mich.

[221 Filed: Aug.6, 1970 [21] Appl.No.: 61,547

[52] 11.8. CL .248/243, 108/108, 211/90, 248/245 [51] Int. Cl ..A47g 29/02 [58] Field of Search....'. ..248/243, 241, 244, 245, 246; 108/108, 107, 106, 109, 152; 52/36; 211/90, 148

[56] References Cited UNITED STATES PATENTS 501,591 7/1893 Richards ..248/246 3,250,584 5/1966 Tassell ..248/245 X 3,280,527 10/1966 Faust ..108/l06 UX 3,265,344 8/1966 Ornstein 108/1 52 X 3,029,056 4/1962 Breglia ..248/243 FOREIGN PATENTS OR APPLICATIONS 1,021,879 3/1966 Great Britain ..248/245 Primary Examiner-J. Franklin Foss Attorney-Hauke, Gifford & Patalidis [5 7] 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.

6 Claims, 6 Drawing Figures PATENTED AR I972 I 3,652,048

SHEET 1 OF 2 INVENTOR I LAWRENCE HARTMAN we; 5 Jaw FIG-3 f 23 Orneys PATENTEDMAR28 1912 3,652,048

' snmz 0F 2 INVENTOR LAWRENCE HARTMAN W fW/ VERTICALLY ADJUSTABLE WALL BRACKET ASSEMBLY FOR MOUNTING A SHELF 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 ofthe 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 I 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 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 shelfsupporting 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 ofthe 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 ofthe 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 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 arevsecurely 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 ofthe appended 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.

UNTTED STATES PATENT OFFICE CERTIFICATE @F CORRECTIQN Patent No. 3 652 O48 Dat d .March 31, 1972 Invent Lawrence Hartman It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

IN THE REFERENCES CITED:

under Foreign Patents or Applications, please insert l,3l4,0l2 French 11-1962 Versatile 248/245- IN THE SPECIFICATION:

Col. 3, line 56, after "60 and 62" insert -of the screws-'- Col. 4, line 35, change "the" second occurrence to (SEAL) Attest:

ROBERT GOTTSCHALK EDWARD M.FLETCHER,JR.

Commissioner of Patents Attesting Officer FORM PO-105O (10-69)

Claims

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 Tshaped 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.

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.