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Патент USA US3024892

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March 13, 1962
3,024,882
L. BLUM
GRILLE WORK
Filed Feb. 16, 1959
2 Sheets-Sheet 1
I]
l
‘
.INVENTOR.
0111s 3/1077,
ATTORNEYS.
March 13, 1962
L. BLUM
3,024,882
GRILLE WORK
Filed Feb. 16, 1959
2 Sheets-Sheet 2
‘
E0
16L?
35
_ INVENTOR.
£01115 15711177,
_
Bypwfé‘
ATTORNEYS.
iltrited States Patent @?tice
3,024,882
Patented Mar. 13, 1962
1
2
3,024,882
vertically spaced facets 15 may be connected to a single
connecting bracket 17. The connecting brackets 17 are
Louis Blum, Pittsburgh, Pa, assignor to Blurncraft of
provided with T-shaped lugs which are adapted to ?t
within T-shaped slots in vertical bars 16. Connecting
GRILLE WORK
Pittsburgh, Pittsburgh, Pa., a ?rm
Filed Feb. 16, 1959, Ser. No. 793,321
4 Claims. (Cl. 189-82)
brackets 17 are ?xed in place by means of set screws 18.
Vertical bars 16, are, in turn, ?tted to spaced horizontal
bars 19 and 20 to which they are a?ixed by set screws 21.
This invention relates to structural grilles or panels and
Horizontal bars 19 and 20 are provided with T-shaped
more speci?cally to structural grilles used in connection
lugsZS which are adapted to ?t in corresponding slots 26
10 in horizontal rails 11 and 12. The resultant structure as
with railings, room dividers and the like.
The use of panels mounted between railings or sup
shown in the drawings is a rigid assembly of easily as-.
ported upon spaced vertical posts for railings are known
sembled parts producing a multiplicity of facets spatially
in the art. In particular, glass, wire and plastic panels
projected from supporting structure producing a three-1
have been known and used in structural designs as shown
dimensional grille work effect.
in the catalog of Blumcraft of Pittsburgh, Sweets Catalog 15
One of the principal advantages of the invention is the
File, Architectural, 1954, Section 5(e), Subsection BLU,
ease and e?iciency with which a wide variety of orna
pages 8 and 9. Certain novel panel structures are shown
in my Patent No. 2,873,094. This invention is an im
provement over the invention disclosed and claimed in
mental grilles may be assembled from basic parts still
providing a sound structure. In assembling a grille made
according to the invention, as illustrated in FIG. 2, the
facet-carrying connecting brackets 17 are slidably inserted
in the vertical bars 16 in accordance with the predeter
mined pattern to ‘be produced by the facets 15. When the
connecting brackets 17 are in place they are rigidly af
?xed by means of connecting screws 18. The vertical
spacing between facets 15 is determined by their relative
positions on the connecting brackets 17 and by the posi
tions of the connecting brackets 17 in the vertical bars
16. A plurality of facet-carrying vertical bars 16 are then
assembled between the horizontal supporting bars 19 and
20 and are af?xed thereto respectively in the desired
spaced relation by means of screws 21. The grille as thus
assembled between the horizontal bars 19 and 20 may be
slidably inserted in the slots 26 of the rail members 11
and 12 where they are ?xed in place forming the grille
work as illustrated in FIG. 1. There has been found to
be considerable utility in providing a wide variety of avail
able grilles by the use of a limited number of interchange
able parts. The essential variety of the grille work is pro
vided by the various types of facet that may be used.
One of the alternate embodiments of the invention is
shown in FIG. 5 in which the facets 15 are projected in
opposite directions from the supporting vertical posts 16
producing a double grille work effect. Any number of
similar variations is possible with the structure shown and
Within the scope of the invention. It is likewise to be
understood that any particular ornamental design of ver
tical post, ornamental rail and facet may be used to pro
duce any desired ornamental effect. The shape of facets
that application. It is the primary purpose and object 20
of this invention to provide a structural grille which pre~
sents a face comprising a large number of individual
facets projecting from the plane of the supporting struc~
ture for the grille.
‘
It is also an object of this invention to provide struc 25
tural grille work characterized by the construction and
appearance of depth which can be easily and securely
assembled from individual parts.
It is another object of this invention to provide a multi
faceted grille having the structure and appearance of a 30
three-dimensional structure as distinguished from the
planar structures heretofore known.
It is a still further object of this invention to provide
a multi-faceted grille based upon the assembly of inter
changeable parts of uniform character which may be ar 35
ranged in dilferent ways to produce diiferent and pleasing
three-dimensional architectural effects.
Other objects and advantages will be apparent from the
following description and drawings.
FIG. 1 is a front view of a grille made according to 40
the invention broken away to illustrate the relation be
tween the grille and its supporting structure;
FIG. 2 is an enlarged exploded view showing the as
sembly of the parts of the grille of FIG. 1;
FIG. 3 is a view partly in cross section along the line 45
III—III of FIG. 1;
FIG. 4 is a view partly in cross section along the line
IV-IV of FIG. 1;
FIG. 5 is a view similar to FIG. 3 showing an alternate
embodiment of the invention;
15 may be varied almost Without limit and certain par
50 ticular facet designs producing de?nite ornamental grilles
FIG. 6 is a view partly in cross section and partly
broken away along the line VI-——VI of FIG. 5.
In describing the preferred embodiment of the inven
are illustrated in my copending design applications, Serial
No. D. 53,441 filed November 19, 1958, now Patent No.
D. 187,495 and Serial No. D. 53,443, ?led November 19,
tion illustrated in the drawings, speci?c terminology will
1958, now Patent No. D. 187,619.
be resorted to for the sake of clarity. However, it is not 55
It will also be appreciated that the grille of the present
the intention to be limited to the speci?c terms so selected,
invention may be employed in horizontal sections as illus
and it is to be understood that each speci?c term in
trated in FIG. 1 or in stairway structures and that the
cludes all technical equivalents which operate in a similar
grille may be disposed between horizontal railings as
manner to accomplish a similar purpose.
shown in FIG. 1 or between laterally offset railings as is
As shown in FIG. 1 the grille 10 is mounted between 60 shown in my copending application Serial No. 623,260
spaced horizontal rails 11 and 12 which are in turn
?led November 19, 1956.
mounted upon spaced vertical posts 13 and 14. The
While in accordance with the provision of the statutes,
ornamental face of grille 10 is made up of facets 15
I have illustrated and described the best form of embodi
which may be of any desired character or arrangement
depending upon the ornamental characteristics desired.
Facets 15 are supported in the desired spaced relation on
vertical bars 16. Facets 15 are connected to vertical bars
ment of my invention now known to me it will be appar
ent to those skilled in the art that changes may be made
in the form described without departing from the spirit
and scope of the invention, as set forth in the appended
claims, and that in some cases certain features of my in
vention may be used to advantage Without a correspond
brackets 17. Connecting brackets 17 may hold any pre
determined number of facets 15. For example, each 70 ing use of other features.
16 and project from the plane thereof by connecting
facet 15 could, if desired, have an individual connecting
bracket 17 or as illustrated in the drawings, two or more
What I claim is:
1. In a structural grille for use with spaced substan
3,024,882
3
tially parallel railings, support lugs connected to and pro
jecting from said railings toward each other, a supporting
bar ?tted to said lugs and spaced between said railings,
means for ai?xing said bar to said lugs, said bar having
an undercut slot in at least one side thereof, an elongated
connecting bracket having a lug shaped to correspond to
said slot disposed within said slot and a projecting portion
extending from said bar and ornamental facets, longitu
4
bar disposed in the slot of each rail member having a lug
projecting toward the other rail member and disposed
longitudinally of said rail, a plurality of spaced mount
ing bars spanning the space between said lugs and
mounted on said lugs at each end respectively, each of
said spaced mounting bars having an undercut slot dis
posed longitudinally along at least one side thereof, a
bracket bar shaped to conform to the undercut slot in
each of said mounting bars longitudinally disposed in
dinally spaced from each other, each of said facets being
a?ixed to the outer end of said projecting portion.
10 each of said mounting bars and a plurality of grille panel
forming facets connected to said bracket bars.
2. A structural grille comprising a pair of spaced sub
4. A structural grille comprising a plurality of spaced
stantially parallel rail members, said rail members having
substantially parallel bars, each ‘of said bars having a
undercut longitudinal slots therein along the sides of said
‘longitudinal slot disposed in one side thereof, said slots
rails facing each other, a transverse supporting bar dis
posed in the slot of each rail member having a lug pro 15 being formed only in the sides of said bars ‘lying in a
common plane, ‘a connecting bracket disposed throughout
jecting toward the other rail member and disposed longi
the length of each of said slots having longitudinally
spaced lugs projecting outwardly therefrom and a plu
rality of facets separate from each other, each of said
each end respectively, each of said supporting bars having
an undercut slot ‘disposed longitudinally along at least one 20 facets being ?xed to one of said outwardly projecting
‘lugs, said facets forming a grille face in a predetermined
side thereof, projecting bracket means disposed in said
pattern spaced outwardly from said supporting substan
slots, said bracket means having projecting portions ex
tending substantially perpendicularly from said supporting
tially parallel bars.
bars and grille panel-forming facets, each of said facets
References Cited in the ?le of this patent
being separate from all other facets, each of said facets 25
tudinally of said rail, a plurality of spaced bars spanning
the space between said lugs and mounted on said lugs at
UNITED STATES PATENTS
being connected to the outer ends of said projecting
portions.
3. A structural grille comprising a pair of spaced sub
2,302,586
Thelen _______ __~ _____ __ Nov. 17, 1942
2,873,094
Blurn ________________ __ Feb. 10, 1959
572,592
Great Britain _________ __ Oct. 15, 1945
stantial-ly parallel rail members, said rail members hav
ing undercut longitudinal slots therein along the sides 30
of said rails facing each other, a transverse supporting
FOREIGN PATENTS
UNITED STATES PATENT OFFICE
CERTIFICATE OF CORRECTION
Patent No. $024,882
March 13, 1962
Louis Blum
s in the above numbered pat
It is hereby certified that error appear
ent should‘ read as
ent requiring correction and that the said Letters Pat
corrected below.
Column 2, lines 52 and 53‘I for "Patent Ne. D. 187,495"
Signed and sealed this 3rd day of July 1962,
(SEAL)
Attest:
ERNEST w. SWIDER
DAVID L. LADD
Atte?ting ()fficer
Commissioner of Patents
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