U.S. patent number 3,836,106 [Application Number 05/323,988] was granted by the patent office on 1974-09-17 for toe board bracket.
This patent grant is currently assigned to A-T-O Inc.. Invention is credited to Robert F. Gray.
United States Patent |
3,836,106 |
Gray |
September 17, 1974 |
TOE BOARD BRACKET
Abstract
A toe board bracket made from a resilient material and having a
toe board holding portion and a horizontal gripping portion formed
integrally therewith. The toe board holding portion is comprised of
a pair of spaced inner and outer vertically extending legs adapted
to receive a toe board therebetween and the horizontal gripping
portion is comprised of a pair of upper and lower spaced
horizontally extending legs adapted for gripping engagement with
the edge of a plank member. The lower leg of the gripping portion
extends from the base of the inner leg of the toe board holding
portion and the upper leg of the gripping portion extends from the
middle portion of the inner leg of the toe board holding
portion.
Inventors: |
Gray; Robert F. (Brookfield,
WI) |
Assignee: |
A-T-O Inc. (Willoughby,
OH)
|
Family
ID: |
23261593 |
Appl.
No.: |
05/323,988 |
Filed: |
January 15, 1973 |
Current U.S.
Class: |
248/229.26;
248/222.11; 24/350 |
Current CPC
Class: |
E04G
7/28 (20130101); E04G 5/00 (20130101); Y10T
24/3459 (20150115); E04G 2007/285 (20130101) |
Current International
Class: |
E04G
7/00 (20060101); E04G 7/28 (20060101); E04G
5/00 (20060101); F16m 013/00 () |
Field of
Search: |
;248/201,214,226E,229
;403/231,205 ;182/113 ;52/285 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Schultz; William H.
Attorney, Agent or Firm: Michael, Best & Friedrich
Claims
I claim:
1. A toe board bracket comprising:
a toe board holding portion comprising a pair of spaced inner and
outer vertically extending legs adapted to receive a toe board
therebetween; and
a horizontal gripping portion comprising a pair of upper and lower
spaced horizontally extending legs adapted for gripping engagement
with the edge of a plank member, said lower leg formed integrally
with and extending from the base of said inner leg of said toe
board holding portion, and said upper leg formed integrally with
and extending from the middle portion of said inner leg of said toe
board holding portion, said upper leg of said horizontal gripping
portion being provided with a plurality of tooth-like ridges on the
lower face thereof and an opening through which an anchoring nail
can be installed, said toe board holding and horizontal gripping
portions being made from a resilient material with said outer leg
of said toe board holding portion and said lower leg of said
horizontal gripping portion being curved to form a resilient spring
arm to provide frictional engagement between the legs of the
respective portions and members positioned between the spaced legs
thereof, and said outer leg of said toe board holding portion being
provided with a nose portion of increased thickness to facilitate
driving the horizontal gripping portion of said bracket into
engagement with a plank member.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a bracket for mounting a toe board along
the edge of a scaffold plank or similar structure.
2. Description of the Prior Art
Most prior bracket arrangements known to applicant are designed to
mount the toe board member on the top surface of the plank. This
arrangement not only reduces the amount of available walking
surface on the plank but is susceptible to the existence of a gap
between the plank and the toe board in the event there is any
tendency of the planking to sag between its supporting members. One
of the principal objects of this invention is to provide a toe
board bracket wherein the toe board is mounted adjacent the edge of
the scaffold plank to thereby provide a maximum walking area on the
plank and to eliminate the gap problem referred to above. Another
object is to provide a bracket which has a relatively simple
construction and can be installed easily.
SUMMARY OF THE INVENTION
A toe board bracket including a toe board holding portion
comprising a pair of spaced inner and outer vertically extending
legs adapted to receive the toe board therebetween and a horizontal
gripping portion comprised of a pair of upper and lower spaced
horizontally extending legs adapted for gripping engagement with
the edge of a plank member. The lower leg of the gripping portion
is formed integrally with and extends from the base of the inner
leg of the toe board holding portion. The upper leg of the gripping
portion is formed integrally with and extends from the middle
portion of the inner leg of the toe board holding portion. The
bracket is made from a resilient material such as extruded aluminum
with the outer leg of the toe board holding portion and the lower
leg of the horizontal gripping portion curved to form a resilient
spring arm to provide frictional engagement between the legs of the
respective portions and the members positioned between the spaced
legs thereof.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmentary perspective view showing several toe board
brackets of the present invention installed in position on a
scaffold plank; and
FIG. 2 is a fragmentary end view of the assembly shown in FIG.
1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawings in detail, the toe board bracket of this
invention is identified by reference numeral 10 and is comprised of
a horizontal gripping portion 12 designed for gripping a horizontal
member such as a plank 14 and a toe board holding portion 16 for
receiving a toe board member 18.
The two portions 12 and 16 of the bracket 10 are formed integrally
with each other. In the preferred embodiment the bracket 10 is made
from a resilient material such as extruded aluminum which can be
manufactured as an elongated extrusion and then cut into brackets
of the desired width which in the preferred embodiment are 1 inch
wide.
Portion 16 is comprised of a pair of spaced vertically extending
legs 20 and 22 and a base leg 24. Leg 20 is curved as shown in FIG.
2 to form a spring arm to frictionally grip toe board 18. Arm 20 is
provided with a nose portion 26 of increased thickness to
facilitate driving the plank gripping portion 12 into engagement
with plank 14.
Portion 12 is comprised of a pair of spaced horizontally extending
legs 28 and 30. Leg 28 extends from and is integral with lower
portion of leg 22 and in effect is an extension of base leg 24 of
portion 16. Leg 30 is integral with and extends from the upper
central portion of leg 22 of portion 16.
Leg 28 is curved as shown in FIG. 2 to form a spring arm to
frictionally grip plank member 14. By curving the legs 20 and 28,
as shown, the area of contact between the legs and the plank and
toe board respectively is concentrating at areas 32 and 33 to
thereby provide a relatively tight gripping action between such
legs and the plank and toe board.
Leg 30 is provided with a plurality of teeth-like ridges 34 on the
lower face thereof. Such teeth tend to dig into the surface of
plank 14 when installed thereon. The faces 36 of ridges 34 angle
upwardly at a much deeper angle than the opposite faces 38 to thus
provide easy installation thereof and yet provide the desired
gripping action once they are installed. A hole 40 is provided in
leg 30 for installation of an anchoring nail 42.
In a typical installation as shown in FIG. 1, a plurality of toe
board brackets 10 are installed along the outside edge of a
scaffold plank 14 by first driving each bracket horizontally over
the edge of the plank until the plank is fully seated between arms
28 and 30 of gripping portion 12 as shown in FIG. 2. The bracket is
driven into position by a hammer or other similar tool by striking
the bracket on nose portion 26. A nail 42 can then be driven into
the plank through opening 40 to securely anchor the bracket in
place.
After the brackets have been installed as described above, the
installation is completed by the insertion of toe board members 18
which is accomplished by simply inserting each toe board into toe
board holding portions 16 from above. The weight of the toe board
18 in the brackets 10 will tend to cause the arm 30 of each bracket
to be pulled down and to the right as viewed in FIG. 2 which will
tend to cause teeth 34 to dig into the surface of plank 14.
The dimensions of bracket 10 are of significance. Since 2 inches
planks or boards (actual thickness 11/2inches) are generally used
for scaffold planking, arms 30 and 32 are dimensioned to fit snugly
over a member having an actual thickness of 1 1/2 inches. Arms 20
and 22 are dimensioned to provide a tight fit with a 1 inch board
(actual thickness three-fourths inch). By constructing the bracket
10 so that the lower edge of toe board 18 is at substantially the
same level as the lower face of plank 14 (see FIG. 2), a toe board
cut from a length of 1 inch .times. 6 inches lumber (actual 3/4
inch thick and 51/2 inches width) when installed will provide a 4
inches high protective wall along the edge of the scaffold plank.
This is the minimum height required under most safety regulations.
Thus the bracket is adapted for use with commercially available
standard-size lumber, namely, 2 inches planks and 1 inch .times. 6
inches boards.
Another advantage of mounting the toe board 18 adjacent the edge of
plank 14 as opposed to mounting it on the top surface thereof (as
is the case with many prior mounting arrangements), is that any
tendency of the plank to sag or bow in the middle will not create a
gap between the bottom edge of the toe board and the top of the
plank as would be the case if the toe board were mounted on the
surface of the plank. Such a gap is undesirable since it might
result in items such as workmen's tools to be accidentally kicked
through the gap in which event they would then fall down to the
ground below.
* * * * *