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Патент USA US2404570

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July 23, 1946.
E_ Q_' ELLlÓT-r I
STRUCTURAL
GRATING
7”
2,404,570
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'ATTORNEY
i
July 23,
1946.
E. c. ELLIQTT
2,404,570
' STRUCTURAL GRATING
\
Filed oct. 11, 1944
2 sheets-sheet 2
INI/ENTOR‘
Edwin. CZE/lio#
JTTORNE Y
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Patented July 23,> 1946
„_ » 2,404,570
UNIT-isn STATES
»
Carnegie-Illinois Steel Corporationìacorpora- Y.
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ÍiÍApplication october 11,1944, seriamo‘. .55s,1ïsr . ’
f
v claims'. (ci. img-¿gif ._ l.
wardly fromA the .bodies ofv the «latter "as
_This invention f relates to improvements lin
structural' gratings ofthe character employedr in
flooring, sidewalks, etc.`
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t.
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It is a prime object of my invention to provide
a grating whichmay bereadily fabricated by
;_ tionally'. engage the grooves'll as the lugs are dis
placed toward .the _ members .-2, .as shown inthe
full line position _inr the drawings.v .Hence,.upon
-_threading the members 2` inthe sockets 3 of mem
means of a practical and >economical mechanical
interlock. I further have` inyiew the provision
'
indotte‘dtlinesin Fig..4, said lugs having :rounded
Afree.;terminals 6 _adapted to: project intoand fric
of aninterlocking construction wherein one of
-v bers -lf-the lugsf51may be forced or wedged into
the grating members has its interlocking portion '
. incorporated? throughout as by. rolling the same
lmembersmtogether» against relative longitudinal
:the-,grooves 4g to;_ frictionally secure the ,grating
movement. . and «positively `_ securing.. the same
into the- member.V duringr its manufacture.
againstfrelative verticalmovement.` In the mod
Additional-objects .and advantages will become
apparent fromv the followi_ng.._description taken in
I connection with»- the accompanying drawings,
wherein:
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-iiicationof ,the grating .of myinvention shown
.in Figures> .1., andx2f,-the secondaryvmembers «12
15:1''are of uniform. cross section, the frictional .en
';»gag_e_1nent_ Qf-lugs 5_ with members 2 being solely
Fig. l `is atpln' view;of a structuralgrating
embodying my invention;
_
Y’
» relied . upon „to .maintain theV primary members
.~_
the » desired spaced .relationship with _respect
__
Fig. 2 is a cross-section thereof taken -on the
...to each other. ~
Y une 11-11 of Fig. 1;
Fig. 3 is across-section taken onithe lineIIl
III of Fig. l showing amodiflcation;
_ _
Fig. 4 is an enlarged sectional view of the lock
ing means taken on the line IV-IV of Fig. 2;
Fig. 5 is a fragmentary perspective View of one
of the grating members of Fig. 4 ;
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20
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edges ¿of >_themembers2 may be _notchedat 1 '
25 to straddle the members yI, as shown in Fig._ 3,
thereby preventing longitudinal- movement'iof the
members 2 by the 4displacement of thelu‘gs.; VAs
al further modification, spaced horizontal‘abut
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Fig. 7 is a view like Fig. 5 of one of the mem
bers of Fig. 6;
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Fig. 8 is a plan View, showing a further mod
iñcation; and
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30
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...
gitudinal movement Yof. the .members `2h asthe
Referring to the drawings, l designates the
parallel primary members of the grating, adapt
ment vlugs 8 _may be _formed in secondary :mem
`bers 2b rearwardly from the grooves 4 as shown
in. Figs.4 8;.and 9,.t_he ymembers. '2‘D being initially
assembled with-members'. I so that the lugsll
space and engage the said members to resist lon
,
' Fig. 9 is a sectional view taken on the line IX
IXofFig.8.
i
„in-g »means ,and to temporarily secure members I
and 2,'_particularly against _the force produced as
*the lugs5 are jammed »into grooves 4, the _lower
Fig. 6 is a view similar to Fig. 4, showing a
modiñcation;
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For the purpose of providing a positive “spac
35
latter `are engaged by lugs 5.l
l
.
. . ._~
Figs. 6 and 7 illustrate another modiñcation
ed to be connected in intersecting relation with>
wherein the secondary members 2a are formed
secondary members 2. The primary members l
with a longitudinal groove 4 on each side face
preferably have vertical portions, as for example,
thereof, and members l are provided with oppo
the legs ofthe T bars shown, the upper edges
of which are provided with upwardly open sock 40 sîtely disposed lugs 5 on either side of vthe sockets
3. In such form, the action of closing or jam
ets 3 spaced at regular intervals to receive the
ming the opposed locking lugs 5will counteract
secondary members 2 therein. The latter are es
sentially rectangular bars having a sliding fit in
said sockets for assembly of the grating.
each other so as not to displac’elthe secondary
`
At least one side face of each of the mem
bers 2 is formed with a continuous longitudinal
locking groove 4, preferably of rounded form,
which groove may be rolled into the members
45
members.
Thus it will be seen that I¿
grating structure which may be r
provided a
ly fabricated
in a simple and'economical manner. While the
same is primarily intended forv use inconcrete
during manufacture thereof. Co-acting with said
ñlled floor constructions, as shown in‘Fi ` _3, ob
integral horizontal locking lugs 5 formed in the
wall of the sockets 3 opposite said grooves 4 in
grating also.
grooves, the primary members l are formed with 50 viously the same may be employed _
members 2.
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As initially formed, the lugs 5 are punched
from the members l and curved laterally out
1
Various changes and modifications are contem
plated within the scope of the following claims.
I claim:
.
1. A structural grating including primary an
2,404,570
3
secondary members disposed in intersecting rela
5. A structural grating including primary and:H
tion, the primary members having upwardly open
secondary members disposed in intersecting rela- `
sockets receiving thesecondary members therein, Y
tion, the primary members having upwardly open
said secondary members being formed with a
longitudinal continuous locking groove along one
side thereof, and said primary members having
sockets receiving the secondary members there
in, the secondary members being notched at their
intersection with the primary members so as to
» an integraly locking lug formed in a wall of each
straddle and space the latter, said secondary
of said .socketsv opposite the locking grooves of
members being formed with a longitudinal con
‘ Í the secondary members, said lugs having Vfree
-tinuous locking groovealong one side thereof,`
and said primary members having an integral
with the locking grooves of the secondary mem- ~ ‘locking lug adjacent each of the sockets, each
bers'.V
of said lugs having a free terminal displaced
2. A structural grating including primary mem;
transversely of the plane ofthe primary member
bers having upwardly open sockets receiving the ' to which it' is attached into frictional engage
secondary members therein,'said secondary mem
ment witlrthe locking groove of the seconda
bers` being formed with a longitudinal continu
member which it engages.
'
terminals displaced into vfrictional engagement
ous transversely rounded locking groove along one . ‘
side thereof, and said primary members having Y
6. -A structural grating including primary and Y*
secondary members disposed in intersecting rela
tion, the primary members having upwardly open
sockets receiving .the secondary members there
a locking lug disposed in the wall of each of said
sockets'opposite and in the planes of the lock-"
, ing grooves in the secondary members, each of
in, the‘secondary members having abutment lugs `
said :lugs vhaving a rounded free> terminal dis
projecting from the sides thereof for engaging
placed transverselyof the'plane of the primary
and thus spacing the primary members, said sec
member "to which >it is attached into fricticnalVV 1ondary members being 4formed with a longitudi
engagement with the locking> groove of the sec
nal continuous locking groove Valong one side
ondary member which it engages'.> Y
thereof, and said primary members having an
.3. Av structuralY grating including'the primary ' integral locking lugY adjacent each of the sock
and-secondary members disposed in intersecting
ets, each of said lugs’ having av free terminal dis
relation, the primary members having upwardly
placed transversely ofthe plane ofthe primary
open sockets receiving the secondary vmembers» 30
'member to which it is attachedintofrictional
therein, said secondary members being; ofïun'i
engagement ?with thevlocking groove of the'sec
form'cross sectionfa'nd beingformed withv ai-lon
V»ondary member which it engages, the said abut
gitudinal -c'ontinuous'ï locking "groove along f one
ment lugs being positioned Ato opposeV the longi
side thereohfand said `primary members having
tudinal displacement of the ¿secondary members
an integral locking lug formed ina wall of each. 35 during the movement of the locking lugs by 4en
`of said sockets opposite the locking grooves of
gagement of said abutment lugsof the primary
the-secondary members, '(saidlugs having free
members.
terminals vdisplaced into frictional engagement
with the locking grooves of the secondary mem-`
bers.
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r 4. A structural grating including primary "and
secondary members ydisposed in intersecting rela
tion, primary` members »having upwardly open
sockets receiving secondary members therein, the»
secondary members having means engaging theî
‘ primary members for spacing the latter, said sec
ondary members being formed with a longitudi- y
nal 'continuous locking groove along one sidev Y
thereof, ,andV saidï primary members having an
integral locking’lugïadjacent Veach of the sockets,
Y'each Vcfysaicl lugshaving a free terminal dis-`
placedtransversely of the plane of the primary
3
member to which it _is attached into frictional en- ’
¿ fgagement with the locking grooves ‘of the sec
ondary member which it engages.
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Y 7.' A structural grating including primary and
secondary members disposed in intersecting rela
tion, the primary members having .upwardly open
sockets receiving the secondary members therein,
the secondarymembers being of uniform 'cross
vsectionand having longitudinal Vlocking grooves
extending continuously along Voppositey sides
thereof, said primary 'members having opposite
ly disposed integral locking lugs on- _either side
wall of each of the sockets in the planev of the
locking grooves,l one lug at each socket-f being
displaced transversely of the planeotithe; pri
mary member in a direction opposite from that
in which the other lug at said socket isdisplaced,
. both said lugshaving frictional engagement with
the grooves in the secondary members, 4
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,K _
EDWIN C_»ELLIOTÁIH
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