US 3158349 A
Description (OCR text may contain errors)
Nov. 24, 1964 E. w. BERGSTROM VERTICALLY ADJUSTABLE sum BRACKET AND CHANNEL SUPPORT Fild March 5, 1962 IN VEN TOR.
United States Patent VERTTQALLY ADJUSTABLE SHELF BRACKET AND tJHANNEL SUPPORT Evar Wilhelm Bergstriim, Mossgatan 4, Nassjo, Sweden Filed Mar. 5, 1962, Ser. No. 177,501
Claims priority, application Australia, Mar. 17, 1961,
2,647/61 1 Claim. (Cl. 248-243) This invention relates to support devices suitable for supporting shelves, racks and the like.
The device, which closely resembles the construction described in US patent specification No. 2,902,242, cornprises an arm having a T-shaped end part, and a channelshaped bar having, in its base wall, at least one aperture and, from each side wall, a side flange projecting inwardly towards the opposite side wall. The bar is adapted, in use to be fixed in an upright position. The flange of the T-shaped part fits closely in the bar between the side flanges and base Wall of the bar to restrict movement of the arm away from, transversely to the longitudinal axis of the bar channel and the web of the T-shaped part has a projection fittable into the aperture in the bar to prevent the bar sliding, in use, downwardly along the channel.
There is a slight risk of the arm in such a device being pivoted upwardly with the flange of the. T-shaped part as fulcrum, and if this is done the projection is moved out of the aperture with the result that the arm is free to slide down the channel in the bar under the weight of the load on the arm.
In order to prevent this upward pivoting of the arm, the projection of the arm of a device according to the invention has a hook-like part extendable through the aperture to engage the opposite side of the base wall to the T-shaped part.
Like the device described in the above-mentioned specification there is advantageously a cut-away part in the web between the flange and the projection of the T-shaped part such that by pivoting the arm upwardly and sidewardly a side channel wall enters the cut-away part to permit the flange to move into a position in which it is approximately parallel to the channel axis so that the arm can be removed from the bar without sliding the arm to an end of the bar.
The scope of the invention is defined by the appended claim; and how it may be performed is hereinafter particularly described with reference to the accompanying drawings in which:
FIG. 1 is a side elevation of a device according to the invention and FIG. 2 is a plan View of the same device.
The device comprises a bar 1 and an arm 2. The bar 1, when the device is in use, is fixed in an upright position either by being fixed to a wall or by a fitting secured to the floor. The arm 2 may be used to support shelves, racks and the like.
The bar 1, which is channel-shaped, has in its base wall 3 a series of rectangular apertures 4 and a plurality of screw holes 5 by means of which it can be fixed to a wall. A side flange 6 projects from each side wall '7 inwardly towards the opposite side wall 7. The bar has, on the opposite side of the base wall 3 to the channel, two side ribs 8 which project perpendicularly a short distance from the base wall 3.
3,158,349 Patented Nov. 24., 1964 The arm 2 is constituted by a T-bar; the Web 9 of the bar tapers from an end part 10 towards a free end 11, while the flange 12 of the end part 10 has a smaller width than, and is separated by a slot 13 from the flange of the remainder of the arm. The web 9 has a projection 14 fittable into an aperture 4 in the bar 1; and the projection has a hook-like part 15 extendable through the aperture 4 to engage the opposite side of the base wall 3 to the flange 12 of the end part 10. Between the flange 12 and the projection 14 of the end part 10 there is a cut-away part 16, which as is described below enables the arm to be removed from the bar 1 without sliding the arm to an end of the bar.
When the device is to be used, the bar 1 is fixed in an upright position. The arm is then inserted into the bar with the flange 12 parallel to the axis or side walls 7 of the bar and a side flange 6 in the cut-away part 16. The arm is then tilted to move the other side flange 6 into the slot 13, and turned so that the flange of the arm is moved perpendicular to the side walls of the bar and is moved into the channel. The flange 12 now fits closely in the bar between the side flanges 6 and the base wall 3 of the bar and so restricts movement of the arm away from and transversely to the longitudinal axis of the bar channel. The arm is then slid along the bar until it is at the desired height, and the projection 14 is fitted in the adjacent rectangular aperture 4. The base 17 of the hook-like part 15 rests on the narrow edge of the aperture 41, while the tip 18 of the part 15 engages the opposite side of the base wall 3 to the T-shapedend part of the arm.
The hook-like part 15 prevents the arm from being pivoted upwardly with the flange 12 as a fulcrum, and so minimises the risk of the projection 14 being moved out of the aperture.
The side ribs 8 project slightly further from the base wall 3 of the bar than the hook-like part 15, and so enables the bar to be fixed in close contact to a wall without the wall preventing the projection 14 from being inserted into the aperture 4.
To remove the arm from the bar the arm is moved slightly upwards until the projection 14 can be removed from the aperture, and is then tilted upwardly and sidewardly to move one side flange 6 into the cut-away part 16 and the opposite side flange into the slot 13. The arm can now be turned until the flange is approximately parallel with the channel axis, and in this position the arm can be removed from the bar.
What is claimed is:
A support device consisting of an arm having a web part and a T-shaped end part and a channel-shaped bar having, in its base wall, at least one aperture and, from each side wall, a side flange projecting inwardly towards the opposite side wall; said bar being adapted, in use, to be fixed in an upright position, said T-shaped end part fitting closely in the bar between said side flanges and base wall of the bar to restrict movement of the arm away from, and transversely to the longitudinal axis of the bar channel, said T-shaped end part being provided with a protruding inner edge facing said base wall and bearing thereon, and the web of the T-shaped part having a projection fitting into the aperture in the bar to prevent the arm sliding, in use, downwardly along the channel, said projection having a hook-like pwt extending through said aperture to engage the opposite side of the base wall so as to prevent the arm, in use, from being pivoted :3 .5 upwardly with the flange of the T-shaped part as fulcrum, References Cited in the file of this patent and there being a cut-away part in the web between the UNITED STATES PATENTS flange and the projection of the T-shaped part serving simultaneously to permit, by pivoting the arm upwardly 2-,902242 Befgstlom p 1, 1959 and sidewardly, a side channel wall to enter the cut-away 5 part to move the flange into a position in which it is FOREIFTITI PATENTS approximately parallel to the channel axis so that the 7 Great Bntam Mar. 2, 1922 arm can be removed from the bar, and to form a sharp FRANK L ABBOTT Primary Examine" angle at the protruding inner edge of the flange of the T-shaped part. 10 CLAUDE A. LE ROY, Examiner.