Supports – Staff type – Stand or base
Patent
1995-01-25
1997-12-09
Ramirez, Ramon O.
Supports
Staff type
Stand or base
527364, 248300, 248530, 403289, E04C 330, E04H 1222
Patent
active
056951663
DESCRIPTION:
BRIEF SUMMARY
This invention relates to post supports and more particularly to a post support of the type which incorporates a box section which is open at at least one end for receiving and supporting a post, for example, a post support of the type described in GB-A-1461802.
Wooden fence posts although cut to nominal size are frequently undersized so that when introduced into a box section of fixed dimensions they have a degree of freedom of movement and the effect of such movement can loosen the post support. GB-A-2140057 relates to a post support in which this problem is avoided by forming the insde of the box section with upstanding projections. Such post supports are entirely satisfactory in use but in certain circumstances it may be difficult to introduce a post into the box section especially if the post is of extremely hard wood such as well weathered oak.
A further form of post support has been proposed in which a portion of the wall of the box section is split vertically over substantially the whole height of the box section and the cut edges are turned outwardly to form flanges, bolts are passed through holes at the top and bottom of the flanges so that by tightening the bolts the flanges can be drawn together thus reducing the cross-sectional dimensions of the box section so that an undersized post received in the box section can be securely held.
Post supports with this sort of box section are open to the disadvantage that in the event of bolt failure or bolt loosening the integrity of the box section may be lost so that the post becomes extremely loosely held and may even, if sufficient force is applied to bend the wall of the box section, fall over with consequent risks of damage to persons or property.
Another form of post support with a rectangular box section has been proposed in GB-A-2222615 in which the box section is formed from a single piece of sheet metal such that at the open end of the box section a portion of one wall of the box section includes an adjusting portion comprising a pair of limbs which are adapted for co-operation with a fastener by means of which the limbs can be flexed relative to the walls and tightened onto a post. This arrangement is unsatisfactory because the bottom of the post is still free to move with the adjusting portion providing a pivot. Moreover, adjustment forces the post against the opposite wall of the box section so that there may still be a degree of freedom for the post to move in a horizontal direction perpendicularly to the direction of compression.
According to the invention a post support includes a rectangular box section which is open at at least one end to receive a post, wherein the material of the box section at a corner location of the box section is horizontally slit in a plurality of axially spaced locations to provide either at least two spaced pairs of tabs or flaps of wall material, or a single pair of tabs or flaps positioned at a substantially central location axially of the box section, the free ends of which tabs or flaps are bent outwardly away from the wall of the box section to form fixing flanges such that bringing together of a pair of flanges by a fixing means, for example, a bolt passing through holes in said pair of flanges, compresses the tabs or flaps inwardly of the wall of the box section thus decreasing the cross-sectional dimensions of the box section in at least two spaced locations or at a single substantially centrally positioned location, the material of the box section in said corner location being continuous except in the region of said tabs or flanges. By means of the invention, an undersized post can be securely held within the box and, in the event of failure of the fixing means, the integrity of the box section is maintained because the material of the corner of the box either is continuous at least in the region between two pairs of tabs or flaps, and optionally also above and below each pair, or is continuous in the region above and below a single pair of tabs or flaps.
When there are at least two pairs of tabs or fl
REFERENCES:
patent: 982380 (1911-01-01), Martin
patent: 1155589 (1915-10-01), McDonald
patent: 1244119 (1917-10-01), Mulnix et al.
patent: 3785107 (1974-01-01), Garretson
patent: 4242822 (1981-01-01), Black
patent: 4874149 (1989-10-01), Miceli
Berger Derek J.
Ramirez Ramon O.
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