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Патент USA US3070204

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Dec. 25, 1962
Original Filed Jan. 13, 1958
2 Sheets-Sheet 1
Dec. 25, 1962
Original Filed Janl 13, 1958
2 Sheets-Sheet 2
cu F FOR D
United States Patent 0 " ice
Patented Dec. 25, 1962
laminated materials in accordance with the inventive
Cli?ord W. Petersen, Wauwatosa, Wis., assignor to Mc
Graw-Edison Company, Milwaukee, Wis., a corpora
tion of Delaware
Original application Jan. 13, 1958, Ser. No. 708,620, now
Patent No. 2,980,214, dated Apr. 18, 1961. Divided
and this application May 23, 1960, Ser. No. 37,015
5 Claims. (Cl. 189—33)
This invention relates to an assembly including brac
ing means and, more particularly, to an assembly of
support means, bracing means and the hardware for at
taching the components to a vertically disposed pole and
the like. This application is a division of an application
entitled “Brace Assembly,” which was ?led on January
13, 1958, and which issued on April 18, 1961, into Patent
No. 2,980,214.
In the electrical industry, it has been common hereto
FIG. 6 is an enlarged perspective view of one of the
novel pieces of hardware associated with the assembly;
FIG. 7 is a perspective view of another novel piece of
hardware associated with the assembly; and
FIG. 8 is a perspective view similar to FIG. 6 of an
alternative form of hardware.
Turning now to the drawings, FIG. 1 shows a vertical
10 extending member such as a pole 10 having a generally
transverse member or crossarm ‘11 which is mounted to
the pole 10 intermediate its ends by a through bolt 12.
A generally V-shaped laminated angle brace 13 is pre
formed with a rounded apex 14 and extending arms 15
and 16, the free ends of the arms 15 and 16 bent out
wardly at 17 and 18 for engagement with the under side
of the crossarm 11.
The laminate structure per se shall
be described hereinafter. The free ends 17 and 18 of the
laminate 13 may be ?xedly mounted to crossarm 11 by
fore to use crossbraces and cnossarrns which are made of 20 a through bolt 22, there being a metal or hardware mem
ber 21 surrounding the end sections 17 and 18 to prevent
clear sections of wood such as Douglas ?r, which has the
tearing of the latter and which will be more fully de
requisite electrical and structural characteristics for sup
scribed hereinafter.
porting various electrical equipment in an elevated posi
The apex of the V-shaped mounting member is ?xedly
tion on a vertically extending pole. It has become in
creasingly dif?cult in recent years to ‘obtain clear sections r mounted to the pole 10 by a through bolt 20 which ex
tends through a suitable crossbore 25 to ?xedly mount
of Douglas ?r which maintain a standardization of char
the laminate crossbrace 13 relative to the pole. The
acteristics desired for large scale use by utilities and the
crossbrace 13 prevents windmilling of the crossarm 11,
steadies same and increases the amount of load that may
It is ‘an object of this invention to provide an assembly
of laminated pieces of material having the requisite di
electric and mechanical strength when in a laminated
bonded form for replacement of the heretofore used cross
arms and crossarm bracing structures.
.It is another object of this invention to provide a more
compact brace in that the requisite electrical and mechani
cal strength can be obtained with smaller dimension
30 be placed thereon. A slotted or apertured channel shaped
member 19 which will be described more fully herein
after is adapted to surround the apex 14 in the neighbor
hood of the bore 25 to both support the apex and to
prevent tearing of the laminate or laminae in the neigh
borhood of the bore 25.
The embodiment shown in FIG. 2 is similar to that
shown in FIG. 1, except that crossbar 11 is replaced by a
laminate structure 27, the latter being substantially
It is a further object of this invention to provide an
thinner than the crossbar 11 while having substantially
assembly comprising a vertically extending member, a
horizontally extending member and a crossbrace member, 40 the same strength and mechanical characteristics. When
the structure shown in FIG. 2 is used, the hardware items,
any or all parts of which may be made of a plurality of
namely, the through bolts 22 and the square shaped hard
preformed laminated strips of material and which may
ware members 21 may be eliminated. A bore 26 may be
be mounted to the vertical member by suitable hardware.
formed in the end portion of 27 for mounting insulators
Another object of this invention is to provide structure
as aforementioned which prevents the windmilling of 45 or the like directly thereto.
crossarms, is easy to maintain at standard electrical and
The embodiment illustrated in FIG. 5 is an integral
angle brace ‘and support means sometimes referred ‘to as
mechanical characteristics, is lighter and stronger than
an alley arm bracket. This bracket comprises a verti
material used heretofore, is well adapted to mass manu
cally extending laminate portion 28 aligned with and in
facturing techniques, is easy to warehouse, ship, inven
tory and store, is corrosion resistant, weather resistant 50 engagement with the pole 10 and mounted thereto by
through bolts 30 ‘and 29. The vertical portion 28 is in
and is otherwise well adapted for the purposes for which
tegral with and joins the horizontally extending support
it was designed.
ing portion 31, there being an integral crossbrace 32 which
The novel features that are characteristic of the inven
is bonded to and integral with portions 31 and 28 as
tion are set forth with particularity in the appended
claims. The invention itself both as to its organization 55 shown at 33 and 34.
The hardware components, as shown in FIGS. 6, 7
and the advantages thereof will best be understood by
and 8 are preferably made of galvanized steel or the
the following description of speci?c embodiments when
like. Member 19 may be formed of channel shaped
read in connection with the accompanying drawings in
stock, there being a base portion 35 and upward extend
FIG. 1 is a fragmentary front elevational view of an 60 ing free arms 36 and 37. The base 35 and arms 36 and
37 are slotted to form an aperture 38 which extends a
assembly including a novel laminated crossbrace for
supporting a crossarm on a pole;
substantial distance into the arms 36 and 37 to ?t over
the through bolt 20 when member 19 is assembled as
shown in FIGS. 1 and 2. The base portion 35 of the
lar to FIG. 1, all of the non-metallic support components
65 channel shaped member 19 engages the bottom most por
being of laminated structure;
tion of the apex 14 of the laminate 13 to support same
FIG. 3 is an enlarged fragmentary perspective sectional
when in the assembled relation shown. Thus, when a load
view along lines 3—3 of FIG. 2;
is impressed .upon crossarms 11 and 27, the bottom of the
FIG. 4 is an enlarged fragmentary perspective sectional
apex 14 engages the base 35 so that the thrust against
view through the apex of the V-shaped crossbrace shown
70 bolt 20 is taken up by the metal edge surrounding aper
in FIGS. 1 and 2;
ture 38 to thereby prevent tearing of the laminate 13. It
FIG. 5 is a fragmentary elevational view of an alter~
is apparent that other hardware constructions may be
native form of crossbrace ‘and support member made of
FIG. 2 is a view of an alternative embodiment simi
used which do not need a crossbore, yet will support
ingly ?x the apex relative to the pole 10.
The alternative embodiment of support member 19’
shown in PEG. 8 of the drawings is adapted to be used
where the V-shaped angle brace laminate 13 is a sharper
V than that shown in the drawings. Thus, the base sec
tion 35 is divided into two wings, the wing 39 being off
set relative to the other wing to provide a more intimate
supporting engagement with an apex 14 of a sharper V
shaped brace.
The large perspective view of FIG. 7 shows the method
of construction of this hardware item 21, namely, a
strap-like member formed and welded as shown and hav
ing a crossbore 49 which extends through the upper and
lower surfaces thereof. When the through bolt 22 is
inserted in aperture 49, the entire member is placed in
compression. It is apparent that this member may be
made out of extruded stock rather than the welded con
struction shown.
Returning now to the laminate 13 and the individual
2. A supporting assembly of the type adapted for ele
vated use with an elongate vertical structure, said assem
bly comprising ?rst, second and third portions, said ?rst
portion adapted to be ai?xed to and disposed in alignment
with said vertical structure and comprising a plurality
of stacked preformed laminae, said second portion
adapted to extend in a generally transverse direction from
said vertical structure and comprising a plurality of pre
formed stacked laminae, at least one but not all laminae
10 of said second portion constituting at least one lamina of
said ?rst portion, said third portion comprising a plu
rality of stacked laminae disposed between said ?rst and
second portions, the laminae of said third portion con
stituting at least some of the laminae of second portion.
3. A generally L~shaped bracket for supporting elec
trical equipment at elevated locations, said bracket com
prising ?rst, second and third portions, said portions be
laminae 23 and 24 per se, the laminae 23 and 24 each
ing composed of a plurality of stacked laminae, said sec
ond portion extending in a generally transverse direction
from said ?rst portion, certain of the laminae comprising
said second portion being contiguous with certain of the
may be composed of, for example, a ?ber glass strip, a
laminae comprising said ?rst portion, said third portion
extending between said ?rst and second portions, the
laminae of said third portion being contiguous with cer
may be composed of clear strips of Douglas ?r which 25 tain of the laminae constituting said first and second por
are stacked, ?exed to desired shape and bonded under
4. -A unitary bracket of the type utilized to support
heat and pressure. Because of the stacked bonded plu
equipment at an elevated location on a vertical struc
rality of strips making a unitary structure, individual de
fects found in a single strip will not seriously deleteriously
ture, said bracket comprising support means having a
aifect the over-all structure and, thus, a lower grade of 30 portion thereof which is adapted to extend in a trans
wood may be used.
verse direction from said vertical structure and having
The preformed arch-like relationship of the individual
a second portion which is adapted to ?xed-1y engage said
plurality of which are placed in stacked relation and are
bonded together by a suitable resin. The laminae also
laminae to make the brace 13 illustrated makes a laminate
vertical structure, said support means comprising a stack
angle brace having considerable more strength than the
of bonded laminae, and a second stack of laminae pre
wood crossarm braces of similar size while maintaining 35 formed and bonded into a laminate, one portion of said
the desired electrical properties of a larger brace. Also,
laminate being bonded to said portion adapted to en
the construction shown lends itself to easy modi?cation
gage said vertical structure, and another portion of said
in manufacturing process to any span and drop desired.
laminate being bonded to said transverse portion of said
support means.
It is also apparent that the bracing‘ structures shown may
be used with or without the hardware components and
5. A unitary supporting bracket of a relatively high
in either event all components may be easily stacked and
dielectric strength for supporting electrical equipment
at an elevated location on a pole member, said bracket
Although speci?c embodiments of the invention have
comprising ?rst, second and third portions, said ?rst por
been shown and described, it is with full awareness that
tion adapted to be a?‘ixed to and in alignment with said
many modi?cations thereof are possible. The invention, 45 pole member and comprising a plurality of bonded
therefore, is not to be restricted except insofar as is ne
laminae, said second portion extending in a transverse
cessitated by the prior art and by the spirit of the ap
direction from said ?rst portion and comprising a plu
pended claims.
rality of bonded laminae, at least one but not all laminae
What is claimed as the invention is:
of said second portion constituting a lamina in said ?rst
1. In combination, a vertically extending member, and 50 portion, said third portion extending between said ?rst
a unitary cross brace and support member comprising a
and second portions and comprising a plurality of
stack of lamina preformed and bonded into a laminate
lbonded laminae, laminae of said third portion consti
having ?rst, second and third contiguous portions, said
tuting laminae of said second portion and being ?xedly
?rst portion being disposed adjacent to and mounted in
attached to laminae of said ?rst portion near one end
alignment with said vertically extending member, said 55 thereof.
second portion being contiguously joined with said ?rst
portion and extended in a generally transverse direction
from said vertically extending member, and said third
portion being contiguous to and having end portions in
contiguous joinder with said ?rst and second portions, 6 O
respectively, the juncture of said end portions to said ?rst
and second portions respectively being spaced from the
juncture of said ?rst and second portions.
References Cited in the ?le of this patent
Berger ______________ __ Apr. 13, 1909
Macmechen et al. _____ __ Aug. 7, 1917
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