U.S. patent number 3,776,521 [Application Number 05/238,444] was granted by the patent office on 1973-12-04 for portable safety railing.
Invention is credited to Robert S. Weinert.
United States Patent |
3,776,521 |
Weinert |
December 4, 1973 |
PORTABLE SAFETY RAILING
Abstract
A portable safety railing includes one or more horizontal bars
supported at either end by vertical posts. The posts are positioned
in weighted bases having sockets for receiving the posts and slots
for receiving the slab-like toe rail.
Inventors: |
Weinert; Robert S. (Manitowoc,
WI) |
Family
ID: |
22897920 |
Appl.
No.: |
05/238,444 |
Filed: |
March 27, 1972 |
Current U.S.
Class: |
256/24;
256/59 |
Current CPC
Class: |
E04G
21/3233 (20130101); E04G 21/3238 (20130101); E04H
17/18 (20130101); E01F 13/022 (20130101) |
Current International
Class: |
E01F
13/00 (20060101); E01F 13/02 (20060101); E04H
17/18 (20060101); E04H 17/16 (20060101); E04G
21/32 (20060101); E04h 017/16 () |
Field of
Search: |
;256/24,25,59,65-70 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Taylor; Dennis L.
Claims
I claim:
1. A portable safety railing comprising:
at least one raised horizontal bar supported at either end by
vertical posts and subjectable to forces generating tipping moments
in said posts;
square, weighted bases each having a pair of sockets for receiving
said posts and for transmitting the tipping moments of said posts
to said bases, the sockets in each base being spacedly located
along one of the intersecting diagonals of the square base on
opposite sides of, and equi-distant from, the diagonal
intersection, said bases further having notches in each corner
thereof extending inwardly along the diagonals; and
a slab-like toe rail located in said notches beneath said
horizontal bar.
2. The safety railing according to claim 1 wherein said weighted
bases are locatable on a working surface and said notches extend
entirely through said base for permitting said toe rail to rest on
the working surface.
3. The safety railing according to claim 1 further defined as
including an intermediate bar between said raised bar and said toe
rail.
4. The safety railing according to claim 1 wherein said raised
horizontal bar and said vertical posts are formed of a single piece
of material.
5. The safety railing according to claim 1 wherein said notches
have flanges along the sides thereof for retaining the slab-like
toe rail in position.
6. The safety railing according to claim 1 wherein said weighted
base has a non skid surface applied to the underside thereof.
7. The safety railing according to claim 1 wherein said weighted
base includes means for lifting said base.
8. The safety railing according to claim 7 wherein said lifting
means comprises a loop in the center of each of said bases between
said spaced sockets and along said diagonal, thereby to provide a
symmetrical lifting point for said bases.
9. The safety railing according to claim 7 wherein said lifting
means comprises one or more hand holes in said base.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to portable rails or fences.
2. Description of the Prior Art
Occupational safety standards are continually increasing for many
reasons. Among the safety standards presently being imposed is the
requirement of a safety railing around elevated working surfaces.
While such railings may be fabricated from lumber and the like, the
erection of this type of railing tends to be time consuming and
expensive, particularly if the need for such railing is temporary,
as in the case of applying a roof.
SUMMARY OF THE PRESENT INVENTION
It is, therefore, the object of the present invention to provide an
improved railing suitable for installation on a working surface for
rendering the area enclosed by the railing safe for workmen. The
railing is simple and easy to erect. Once erected, it is capable of
resisting the tipping forces to which it is subjected and is
difficult to accidentally dislodge from the working surface. The
railing is convenient to store and transport.
Briefly, the present invention contemplates a portable safety
railing having at least one raised horizontal bar supported at
either end by vertical posts or standards. A slab-like toe rail is
located beneath the horizontal railing or bar, typically on the
working surface. Weighted bases support the vertical posts. The
bases, which typically may be square, have inwardly extending
notches at each corner for receiving the toe rails.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of the portable safety railing of the
present invention installed on a working surface.
FIG. 2 is a cross sectional view of a weighted base member which
may be incorporated in the safety railing of the present invention
and showing fragmentary portions of other elements of the safety
railing coupled to the base member.
FIG. 3 is a plan view of the weighted base of FIG. 2.
FIG. 4 is a fragmentary cross sectional view taken along the line
4--4 of FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1, the portable safety railing of the present invention is
identified by the numeral 10. Safety railing 10 is comprised of a
plurality of sections 12, hereinafter described in detail, which
are positioned on a working surface, for example, roof 14 of
building 16.
A raised horizontal bar 18 typically manufactured from tubular
stock, is supported at either end by vertical posts 20. While a
pair of oppositely extending bars 18 may be attached to a single
post 20 for support by mechanical fasteners and the like, it is
presently deemed preferable, to form bar 18 and posts 20 from a
single piece of bent tubular stock. Each bar 18 is thus supported
at either end by a post 20.
A second horizontal bar 22 may be joined to posts 20, as by
welding, mechanical fasteners, etc. to extend between the posts
below bar 18.
Posts 20 are maintained in the upright position by weighted bases
22. In general, it has been found desirable to form bases 24 in a
configuration having a pair of mutually perpendicular transection
lines. The periphery of the base is shaped to recede from the
termini of the transection lines. Base 24 contains inwardly
extending notches or slots 26 at the termini of the mutually
perpendicular transection lines for receiving a toe rail,
hereinafter described.
Weighted bases 24 are shown in exemplary fashion in FIGS. 2 and 3
as generally square-like in shape. The transection lines comprise
diagonals of the squares and notches 26 are located at the corners
of the base. See FIG. 3. A base 24, so formed, thus forms a diamond
configuration in which the sides of the diamond recede from the
points thereof.
In order to provide sufficient stability to safety railing 10
against tipping forces, bases 24 are fabricated from a dense
material, such as cast iron. The weight of bases 24 may be
determined by the tipping resistance requirements established by
administrative or other codes. A base weight of 80-120 pounds has
been found to provide a highly desirable stability to railing 10.
To facilitate the handling of bases 24, a pair of hand holes 28 may
be provided in the base, as shown in FIG. 4. For similar purposes,
a loop 30 may be provided in the center of base 24. While the
weight of base 24 will generally be sufficient to prevent
displacement of the bases along the working surface during use, a
ribbed rubber sheet or mat 32 may be applied to the underside of
the bases.
One or more sockets 34, capable of receiving the lower ends of
vertical posts 20, are incorporated in base 24, as shown in FIG. 2.
In the presently preferred embodiment of the invention, a pair of
sockets 34 are spacedly located along one of the transection lines
of the base. In the case of square base 24, sockets 34 are spacedly
located along one of the diagonals, as shown in FIG. 3. Toe rail 36
of safety railing 10 may be formed from a plank laid on edge and
positioned in notches 26. Notches 26 may be surrounded by flanges
38 which assist in retaining toe rail 36 on edge. Toe rail 36 rests
on working surface 14 to prevent small tools, debris, and the like
from being kicked off the working surface.
Safety railing 10 may be erected by placing bases 24 around the
periphery of the work area. Thereafter posts 20 are dropped into
sockets 34 to raise bar 18. Toe rails 36 are placed in notches 26
to complete a section 12 of safety railing 10. The height of
vertical posts 20 may be selected to position horizontal bar 18 at
a level suitable to the particular application, safety
requirements, and work area. Typically bar 18 will be positioned 42
inches off the working surface. Intermediate bar 22 will usually be
21 inches above the working surface. The length of sections 12 of
safety railing 10 may also be selected to suit the application and
work area. For example, safety railing 10 may be available in 10
foot, 7 1/2 foot, and 5 foot sections.
Various modes of carrying out the invention are contemplated as
being within the scope of the following claims particularly
pointing out and distinctly claiming the subject matter which is
regarded as the invention.
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