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Патент USA US2404471

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July 23, 1946.
Filed Feb. s, 1945
2,404,471 _
Patented `Íuly 23, L1946
2,404,471 '
STATE s . PATEN'P` AoFFlexi.¿_ z
2,404,471 _
' FLooRrcoNs'rnÚo'rIoN
Y Robert AH. Carson, Arlington, Mass., assignor to‘ l
¿the Government of the United States
application February a, 1945, serialNo. 576,116
3 Claims. (Cl. 20-8)
. .
This invention relates to _an improved floor con
struction and more especially to a floor construc
tion for receiving and concealing electrical wiring
and other materials.
An object of the invention is to provide an im
' proved floor construction and to devise means for
edges of the floor timbers at points of intersection
thereof. These plate members are preferably
formed with a square shape and are of a size f
such that they exceed the width of the floor
timbers I0 and I2, thus providing projecting cor
ner portions, as may be more clearly observed in
Fig. 1. The projecting corner portions are pro
vided with openings I6 which are adapted to re
ceive screw fasteners I1, which are formed with
becoming entangled with one another. Another
object is to dispose of a relatively large number 10 lug portions I8 and may, upon a half rotation, be
engaged with a -second fastener piece I9, attached
of conductor wires so as to provide an unob
at the under side of the plate.` If desired, other
` » structed iioor area. It is also an object of the in
types of fasteners may be resorted to.
vention to provide a floor construction which per
The joists I0 may be cut away at some con
mits ready accessibility throughout the floor so
that wires may be quickly and efficiently taken up, 15 venient point, as for example midway between
two adjacent longitudinally extending joists I2,
repaired or examined at any given point without
and at the upper edge thereof, to provide an
removing or altering the floor construction at
opening 20. In this opening may be placed a
other points. Other objects will appear from the
plurality of electrical conductors 2|, as may be
following description of the drawing.
20 more clearly observed in Fig. 2. If desired, a
In the accompanying drawing:
plurality of openings may be provided for in the
Fig. 1 is a fragmentary plan view of the floor
floor timbers and these openings may be formed
construction of the invention; and
in the longitudinally extending joists as Well as
Fig. 2 is a cross section taken- on the line 2-2
in the transversely extending joists.
of Fig. 1.
The invention generally includes a floor con 25 - The construction described thus permits the
conductor wires 2| to be located below the sur
struction which is formed of sections or squares
face of the floor. This is particularly advan
of flooring, detachably secured over iioor timbers
by means of plate members. The plates are ar
tageous in connection with the use of a relatively
placing wires, cables, and the like beneath the
surface of a floor to prevent such members from
ranged at points of intersection of transversely
large number of pieces of electrical apparatus
extending timbers, and longitudinally extending 30 where a great manyconductor wires Aare re
timbers on'the upper edges of these timbers. The
size of the Plates is designed to present four pro
quired, and by so doing unobstructed floor area
is obtained. The projecting corner of the plates
jecting corners. The sections or squares are se
used to secure’four corners of a square of floor
cured to these projecting corner portions by
material provides easy access to these conductor
means of fasteners, with each section or square 36 members at any >point along the floor since the
fastened at its four corners. At some convenient
screw fasteners I'I may be disengaged by a half
point the floor timbers are recessed to provide
turn and the squares lifted away from the plates.
openings through which conductor or cable mem
Any number of sections may be removed at a
bers may extend, lying just below the sections or
given time, but it should be observed that where
squares in a convenient position for inspection 40 a particular section of the wiring is desired to be
or repair at any given point corresponding to one
inspected, this may be carried out without alter
of the floor squares.
ing or changing adjoining sections of the surface
Referring more in detail to the drawing, nu
meral I0 denotes floor timbers or joists which are
` It will be seen that I have provided an improved
arranged in spaced relation, extending trans
45 floor construction which is particularly adapted
versely as viewed in Fig. 1 of the drawing. Simi
for use in concealing a large number of elec
larly, numeral I2 denotes other floor timbers or
trical conductors and maintaining an unob-`
joists which extend longitudinally as viewed in
structed floor area. At the same time, flexibility> ’
Fig. 1 of the drawing. Preferably a supporting
in removing or examining sections of electrical
surface for the joists or boards, or other rough 50
conductors is provided for, and such conductors
flooring material I I is provided, as shown in Fig.l
are readily accessible at all points.
2. The joists in turn support a plurality of
While I have shown a preferred embodiment of
squares of flooring material I3.
my invention, it should be understood that vari
The squares are secured to plates I4 which are
solidly secured by fastenings I5 on the upper 55 ous changes and modifications may be resorted to,
in keeping with the spirit of the invention as de
' fined by the appended claims.
I claim:
1. An improved floor construction comprising
supporting members arranged crosswise With re
Spect to one another, plates ñxed to the support
ing members> atk intersection points thereof and
being of a size adapted to present corners pro
jecting beyondV saids intersectioni points; and;
„squares of surface ffooriiig material-= d'etacli'a'blyrv
secured to the corners of said plates. _
2. An improved floor construction for receive-Ä
ofenings, squares of finish ñooring provided at
the corners thereof with fastening membersY
adapted to extend through the' openings in the
plates and lock at the under side thereof.
3. An improved ñoor construction for receiving '
and concealing electrical Wires, cables and the
like, comprising a plurality of squares of ñooring
materials arranged with edges thereof adjoining
oneJ another tœpresent a;> substantially; continuous
surface?saidësquares being form‘ed‘îat” their corners
_with openings, fastening members extending
Athroughk the said openings to detachably secure
Ving'and concealing electrical Wires, comprislng.
intersectingY ñoor timbers having their upper
Y- saidÍ squares of ñooring material to underlying
edges recessed to receive electricalwiringêtheref.:
timbersl adapted to#` receive said fastenings ex
f in, a plurality of plate members ?iX‘efdï-t’othetiinvm
bers at points of intersection. thereof1 saidplates,H
floor timbers, plate members ñxed to the floor
t'endin'g‘throughfthe corners of squares of flooring '
Vmateriali andcsai'dtimbers being recessed to pro- '
being of a size exceeding the Width of‘the timbers
vide slots through which electrical Wires may ex
to present projecting corner portions projecting-cA tend.;I
beyond said points of intersection, the corner por 20
l ROBERT H. cARsoN.> '
tions, ol"V`4 Vsaidfplate1 membersbeing formedZ With»`Y
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