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Патент USA US2136710

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Nmr. 15, 1938..
'
E. A. ROBERTSON
'
lm??m
HIGHWAY GUARD EENCE
Filed June 7, 1957
2 Sheets-Sheet l
fé?iz:
EDWARD A. ROBERTSON
Q5
Nov. 15, 1938.
E. A. ROBERTSON
2,136,710
HIGHWAY GUARD FENCE
File'd June 7, 1957
I
2 Sheets-Sheet 2
O
ME
UP
E DWARD A‘ ROBERTSON
Patented Nov. 15, “1938
a
'
2,135,710
UNITED STATES PATENT OFFICE
2,136,710
HIGHWAY GUARD FENCE‘
Edward A. Robertson, Western Springs, Ill., as;
signor to Clarl; J. Robertson, Brook?eld, Ill.
Application June 7, 1937, Serial No.>146,725
_12 Claims. (Cl. 256771321)
‘The present invention relates to simpli?ed and
permitting longitudinal shifting movement of the
improved types of highway or road guard fences
rail caused by the same being struck by a moving
for use adjacent ‘roads or highways at curves or
at dangerous
along
the road.
The rail
imit“ proved
guard locations
fence is of
a hinge
supported
vehicle or caused by the contraction or the ‘expan
sion of the rail material due to temperature
changes.
Ur
*"1‘0 by having the3hinge supported rail act as a cushioning means to absorb impact shocks to obviate
accidents and to prevent'and reduce damage to
the
vehicle.
’
.
‘
‘It is an object of this invention to provide an
or at curves in the road, said guard fence includ- ‘m
ing spaced posts and a continuous rail free from
tension connected ‘together by improved hinge
'
‘
.
the like which are laced or connected together by
it; improved type of lnghway guard fence wherein
means of a heavy 601'] Vertically ‘disposed and i5
‘220 the hinge members of “the fence to serve as shock
means until all the play is taken up and then ‘2.0
Another object of the invention is the con- _ fence.
the highway and accidentally
strikes the guard
‘
‘
tinuous guard rail is mounted to be normally
.Other and further important objects of this in
free from tension by the use of a hinge support- vention will be apparent from the disclosure in I25
ing connection between the continuous guard rail the speci?cation and the drawings.
and the fence posts.
'
The invention (in preferred forms) is illustrated
It is a further object of this invention to pro— in the drawings
and hereinafter more fully de
vide a road guard fence including hinge supports scribed.
‘
struction of a highway guard fence wherein a con-
‘
‘3,0 between the fence posts and a continuous rail to
provide a construction wherein the rail is free to
move to compensate for the expansion and the
contraction of the rail metal due to temperature
35
‘
changes.‘
‘
On the drawings:
30
Figure 1 is a fragmentary top plan view of a
highway guard fence embodying the principles of
this invention.
Figure 2 is a fragmentary front elevational
Another object of theinvention is the construction of a highway guard ‘fence wherein a continuous rail 15 mounted without tension in front
of‘ intermediate posts and between end ‘posts by
View of the guard fence.
35
FigureB is an enlarged vertical sectional view
taken on line III-—III of Figure 2
Figure 4 is an ‘enlarged top plan View Of the post
to provide an improved type of highway guard
fence wherein the rail, constructed out of ‘rail
movement ‘of the fence‘ Tail.
Figure 5 is afragmentary sectional detail taken
free from tension upon fence posts by means of
Figure 6 is a fragmentary detail ‘View ‘taken
41.; plates, rail bars or cables, is supported imposition
011‘ line V—V of Figure 3-
‘
>
hinge coil units to provide a‘ construction wherein
on line VI—VI of ‘ Figure 3.
the rail; when contacted by a vehicle, carries the
force to the hinge coil units‘ which act to ?rst
Figure 7 is a fragmentary front elevatlonal
view of a modi?ed form of guard fence using
i
'
45
r
50 take up the play and then act as shock absorbers. spaced rail cables or wires to form the fence rail. 50
Still another object‘of the invention is the pro, Figure 8 is an enlarged top‘ plan view of one
vision of a road guard fence wherein ,a continuous ‘ of the end post constructions of the fence illus
rail is supported on spaced posts by means of trated in Figure 1. '
hinge units, and wherein the ends of the rail are
Figure 9 is an enlarged fragmentary horizontal
i5 positioned to slidably project through end posts I detail section taken on line IX-IX of Figure 3. 55
2,136,710
2
The hinge units supported on the fence posts
Figure 10 is a top plan view of a modi?ed form
afford a means for supporting a rail unit free
from tension. The rail unit is of a continuous
of end post construction for the guard fence
when the fence rail is disposed longitudinally be
tween the end posts and wherein the normal posi
construction comprising a plurality of rail plates
or strips I2 constructed of sheet steel and ar
ranged end to end in overlapping relation with
tion of the hinge coil and the fence rail are illus
trated in full line while the operation of said
members is illustrated in dotted lines.
the overlapping ends rigidly secured to the rail
supporting ?anges ‘I by means of rivets l3 or other
suitable means. The rail strips or plates 12 are
’
Figure 11 is a fragmentary side elevational
thus rigidly connected one to another to form a
view of the end post construction illustrated in
10 Figure 10.
Figure 12 is a fragmentary top plan view of
continuous rail member which is supported by
the angle members 1-—8.
In the fence construction illustrated in Fig
another modi?ed form of‘ end post construction. I
wherein the end of the guard rail slidably projects ures l and 2 it will be seen that the fence rail 15
through the end post between upper and lower is free to move longitudinally with the contrac
tiori or the expansion of the fence rail material
15 reinforcing metal bands engaged on the‘post.
Figure 13 is an elevational viewnoflthemodi?ed 7 due to temperature changes. The fence rail
member,- being ‘of continuous construction, is
form of end post shown in Figure 12.
mounted so that it is not under tension. The 20
As shown in the drawings:
~
~
1-—8 which connect the continuous
The reference numeral l indicates the shoulder angle membershinge
coils in permit a longitudi
‘of
a
concrete
highway.
Constructed
upon‘
the
“rail
with
the
20
shoulder-l of the road’ adjacent the side of the nal shifting movement of the continuous rail due
highway is an improved guard fence adapted to to the hinge action of the coils between the rail
be located at selected dangerous locations along and the fence posts. ‘When an automobile acci 25
.dentally leaves the road and strikes the guard
the road or at road curves. The'improved high
fence, the rail plates or strips l2 being resilient
way
guard
fence
is
provided
for
the
purpose
of
25
receive the shock and tend to transmit the same
reducing the seriousness of accidents when ve
hicles are accidentally run off. of the road and to the hinge coils which ?rst act to swing or
plunge into contact with the guard fence. The move with respect to the supporting ?ange mem 30
improved highway guard rail when struck by a bers 5 of the post angle bars to take up the play
30
moving vehicle acts as a means for'reducing the
and then act as shock absorbers to ‘absorb the
seriousness of the accidentf'by absorbing the shock
in the rail member and in the supports for said
impact shocks. The hinge movement of the rail
supports is clearly illustrated in dotted lines in
Figure‘li which ?gure indicates that the aper 35
rail member which supporting‘
hinge coil construction and act as hinges
until all
the hinge‘ coils
35 the play is taken up ‘afterv which
act as shock absorbers.
‘
tured ?ange 8 ?rst will slide on the coil H1 in
one direction or the other and then will cause
the coil to act as a hinge to swing into a dotted
' In the form of highway guardfence' illustrated
in Figures 1 to 6 and in Figures 8 and 9 the fence
line "position depending on the direction from
comprises a plurallty’of spaced posts 2 each hav
ing rigidly secured thereon a.v hingesupporting
The improved guard fence is of the shock ab
sorbing type wherein hinge units connect the
40 ‘unit’ for hingedly supporting a continuous rail
mechanism in position free from tension.
'
Each of the hinge supporting units comprises
'a post ‘angle iron consisting of a mounting ?ange
.31 having apertures therein for the reception'of
45 mounting bolts 4 which project through the ?ange
.3 and through the posts‘as'cle'arly illustrated in
Figure‘3. Integrally formed at right angles to
the angle ?ange 3 is an angle ?ange 5 provided
with a row of apertures 6. iPositioned opposite
50 the post‘angle iron is a rail angle iron consisting
of a mounting ?ange 1 and a‘?ange 8 integrally
connected therewith at right angles. The post
55
and‘ rail’ angle irons of each hinge unit are
mounted in reverse relation ‘with respect to one
another and diagonally opposite as illustrated
in Figure 4 to position the?anges 5 and 8 sub
stantially opposite one another. The ?ange 8
of the rail angle iron is provided‘ with a row of
spaced apertures 9 which‘ are staggered: with re
60 spect to the apertures 6‘ in the 'post angle iron
which the force may come.
rail with the fence posts so that when automo
biles strike the fence rail the shock is distributed
throughout the members of the fence thereby re 45
ducing the seriousness of accidents. illustrated
Y While the form of road guard fence rail con-'
in Figures 1 and 2 discloses a guard
structed of strips ofsheet steel, it will, of course,
be'understood that the rail may be constructed
of other material such, for example, as wire 50
cables I4 which are connected in spaced parallel
relation as clearly illustrated in Figure 7 and are
secured to the rail ?anges 1 of the hinge units
by means of staple bolts l5 or the like.
Referring to Figures 10 and 11, an end post con
struction is illustrated for use in a guard fence
similar to that illustrated in Figures 1 and 2
but wherein the end'rail plate I6 continue past
the last intermediate fence posts 2. The outer 60
end of end rail plate I6 is provided with a row of
apertures H to permit the loops of an end hinge
coil 18 to be threaded therethrough. The end
hinge coil la‘ is also threaded through openings
5 as shown in Figure 3, for thereception of a
heavy hinge coil H] which is of a spiral‘construc
l9 provided in one of the ?anges of an end post
65
.tion vand‘ is adapted to be screwed or threaded angle iron 20 which is rigidly secured to an end
downwardly through the openings 6 and 9 to con
post 2| by means of bolts 22.
neotthe angle irons. The lower end of the hinge
' In the modi?ed form of fence construction using
coil is threaded downwardly‘ until the end con
the end post support for the ends of the con—
tacts‘ the bottom portion ofthe angle ?ange .1 tinuous rail as illustrated in Figures 10 and 11
which acts as a‘stop .to limit the downward both the hinge constructions of the intermediate
movement of the hinge coil. The upper end of post 2 and the end posts 2! act to support the
.70 the hinge coil is bent downwardly to form‘ a stop
continuous rail member in position free from nor
?nger or hook ‘H which is spaced a short distance mal tension and permit longitudinal shifting
from the ?ange 5 when the hinge coil is in its movement of the rail member when the same is
accidentally impacted by automobiles or the like.
proper or. lowermost position, as shown in Fig
ures 5 and6.
'
‘
'
'
‘
75
2,136,710
3
A fenceiconstr‘uction is thus providediwhe‘rein the
resiliency‘ of‘ the ‘rail; plates- or strips first act; to
absorb part‘ ofl’the initialfshock due to the impact
after which the shock‘is distributed-‘to the» "
Cl coils
l0" and I8
‘
‘
‘
positions of Figure 4‘ either to
one ‘side-or the other d‘ependingupon the direc
tion of‘the ‘shock, While th6‘_-EHd*CO?S ‘lt‘tendl to
swing‘ from the full-line position of‘ Figure‘ 10
10'
intoi'the‘ dotted-line‘position‘ to one side or‘into
a similar‘ dotted‘dine position‘ on'the opposite side
15 of
the full-lineposition.
I
To compensate for the expansion and contrac
20
applied to the rail unit.
5. A highway guard fence comprising a rail 20
vunit, a plurality of supporting posts, and hinge
25
rail member, the
apertured end of the end rail plate It may slide
on the coil [8 or cause the coil to swing from the
full-line position of Figure 10 toward the dotted
line position.
Figures 12 and 13 illustrated another modi?ed
form of an arrangement for an end post con
struction for a guard fence combining the ar
rangement illustrated in Figures 1 and 2 but
having end rail plates 24. Each of the end rail
plates 24 is positioned so that the end portion
thereof slidably projects through a slot 25 pro
angle members.
6.. A highway guard fence comprising a rail
unit, a plurality of supporting posts, and hinge
units connecting the supporting posts with the
Width of the end rail
To reinforce the
slotted upper end of the end post 26 steel rein
forcing bands or collars 27 are engaged around
the post 26 in spaced relation as clearly illus
trated in Figure 13 to permit the end portion of
the end rail member 24 to slidably project through
the post slot between the upper and lower
or hooked.
bands 21.
7. A highway guard unit comprising a pair of
With the improved end post construction illus
trated in Figures 12 and 13, the continuous fence end posts, a rail unit disposed between the end
posts, hinge coils connecting
rail is adapted to move longitudinally in one direc
the ends of the rail L
tion or the. other due to the impact of vehicles units with the end posts, a plurality of intermedi
against the fence rail or‘due to the contraction or ate posts disposed to one side of the rail unit,
the expansion of the rail member caused by tem - and hinge coils connecting the intermediate posts
to said rail unit.
perature changes or the like.
8. A highway guard fence comprising a pair of
It will, of course, be understood that various
details of construction may be varied through a end posts, a continuous rail unit disposed between
60 pose to limit the patent granted hereon other
wise than necessitated by the scope of the ap
pended claims.
'
I claim as my invention:
1. A highway guard fence comprising a plu
rality of spaced posts, a continuous fence rail,
and hinge coil units connecting the rail with said
posts.
2. A road guard fence comprising a plurality
of spaced posts, apertured angle members rigidly
secured to said posts, a continuous rail, apertured
angle members secured to said rail, and hinge
coils threaded through the apertured angle mem
70
bers on said rail and on said posts for supporting
the rail in position free from normal tension.
3. A highway guard fence comprising a plu
75
2,136,710
unit and with the sides thereof for supporting
the rail unit in position free from normal tension.
10. A highway guard fence comprising a pair
of spaced slotted end posts, a rail unit disposed
'between the“ end posts with the ends of the rail
unit slidably projectlng through the slots in the
end posts, a plurality of intermediate posts posi
tioned to one side of the rail unit, and hinge coils
connecting the intermediate posts with inter
mediate points along the length of the rail unit.
10
11. A highway guard fence comprising a pair of
spaced slotted end posts, means for reinforcing
the slotted end posts, a rail unit disposed between
the end posts with the ends of the rail unit slid
ably projecting through the slots in the end posts,
15
a plurality of intermediate posts positioned to one
side of the rail unit, and hinge coil units connect
ing the intermediate posts with intermediate por
tions of the rail unit to support the rail unit in
position free from tension and longitudinally
shiftable when subjected toimpact stresses or
temperature changes.
12. A highway guard fence comprising a'pair
of end posts, a rail unit shiftably mounted be
tween the end posts, a plurality of intermediate 10
posts mounted to one side of the rail unit and out
of line with the end posts, and hinge coils con
necting the rail unit at spaced points between the
ends thereof with the intermediate posts.
EDWARD A. ROBERTSON.
15
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