Patent Application
20170044783
In times past when concern about safety was less developed, workers on roofs simply accepted the risk of falling and carried out their tasks without safety harnesses or safety rails.
In more enlightened times, requirements have been set forth that all workers at risk of falling must be protected. In many cases this is done by harnesses and fall restraint cables but often this is restrictive, particularly where there are a number of workers in the area to be protected.
An alternative approach is to provide a safety fence around the perimeter of the area. A number of proposals have been made to provide such a construction. Typically this is done by constructing a full scaffolding around the perimeter but this is expensive and time consuming. Alternative constructions have been provided but often these do not provide sufficient stability.
It is one object of the invention to provide an apparatus for mounting safety railing to a roof.
According to the invention there is provided an apparatus for mounting safety railing to a roof where the roof has a vertical face plate extending along the length of the roof and an inclined roof deck, the apparatus comprising
a mounting plate having an edge flange portion arranged to be mounted by screw fasteners at the face plate of the roof;
a receiving hole on the mounting plate arranged to receive a vertical support post thereby supporting the post in a vertical position preventing horizontal movement of the post;
a safety rail arrangement supported by a portion of the vertical post above the mounting plate;
and a support below the mounting plate for engaging and supporting a lower end of the post in a vertical orientation so as to extend from the ground through the hole in the mounting plate to the safety rail arrangement.
In one arrangement the edge flange portion of the mounting plate is coplanar with the mounting plate and is fastened to a horizontal top edge of the face plate.
In another arrangement the mounting plate has an upturned edge flange portion which is fastened to a front face of the face plate where preferably the mounting plate has a plate portion arranged to extend horizontally outwardly from an outer surface of the face plate.
Preferably the lower end the post is supported at the ground surface.
Preferably the receiving hole has a downturned flange portion around the hole.
Preferably the mounting plate is formed from a single sheet of metal.
Preferably the base plate at the ground is mounted to prevent side to side movement at the ground.
In another arrangement wherein the mounting plate is located with the edge flange portion attached to the roof deck where the mounting plate is located with the edge flange portion underneath the shingles.
Preferably the receiving hole is dimensioned relative to the post to allow the post to pass through the hole while at an angle to the plate different from 90 degrees to allow the plate to be placed at an angle defined by the roof deck.
Preferably the safety rails are attached to the post by scaffolding clamps.
One embodiment of the invention will now be described in conjunction with the accompanying drawings in which:
In the drawings like characters of reference indicate corresponding parts in the different figures.
As illustrated in
The posts are supported vertically by the mounting plate. In a first embodiment of the mounting plate, as illustrated in
A vertical mount 31 of the mounting plate extends vertically from the horizontal plate such that the plate can be mounted to the outer face of the face plate. The vertical mount has holes 33 to receive mounting bolts 35 for sufficiently mounting the plate to the face plate. Some of the holes can be located at the junction between the angle parts so as to pass through the plate into the face plate at an angle of roughly 45 degrees to the plate.
In a second embodiment of the present invention, as illustrated in
The horizontal mount has holes 45 to receive mounting screw fasteners 47 for sufficiently mounting the plate to the top side of face plate.
The receiving hole 43 has a recessed portion 49 turned downwardly at the edge so that the vertical post can be inserted easily therethrough. The plate is arranged support the post in a vertical position preventing horizontal movement of the post. The hole is slightly larger than the post to allow the plate to lie at an angle to the post when attached to the roof deck due to the pitch of the roof. Alternatively the plate can be bent at an angle matching that of the deck so that the portion of the plate which contains the hole is located at right angles to the post.
In
The mounting plate consists of an integral plate and is formed from a single sheet of metal with a portion for screw fastening to the face plate and a plate portion extending outwardly from the roof and containing the hole at a position spaced outwardly sufficiently to clear the eavestrough.
Where shingles are already applied, the mounting plate is located with its edge underneath the shingles.
The base plate is fastened to the ground by stakes or other fasteners to prevent side to side movement at the ground.
The receiving hole is dimensioned relative to the post to allow the post to pass through the holes while at an angle to the plate different from 90 degrees to allow the plate to be placed at an angle defined by the roof pitch.
The safety rails can be attached to the post by scaffolding clamps or similar tubular clamps which hold the rails at a fixed/height on the post.
Since various modifications can be made in my invention as herein above described, and many apparently widely different embodiments of same made within the spirit and scope of the claims without department from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
