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Патент USA US2127709

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Aug. 23,1938.
s. c. AwBRE-.Y
2,127,709
DIVIDING BAR
Fi led Jan. 18, 1937
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Patented Aug. 23, 1938
2,127,709
UNITED ASTATES PATENT NOFFICE
2,127,709
DIVIDING BAR.
Samuel C‘. Awbrey, Kansas City, M0.
-Applïwaum January 1s, 1937, serial No. 121,144
4 Claims. (Cl. 94-17)
This invention relates to dividing bars and par
ticularly to a dividing bar suitable for use 'in
ñoors made of plastic material such as terrazzo,
cement, etc. for preventing objectionable crack
ing of the floor, and also for producing novel and
ornamental floor designs.
Terrazzo, stucco, and similarv floors usually
comprise a base or floor slab, a cement screed,
and a surface or finishing layer. It is desired -to
10 prevent objectionable cracking in the upper lay
ers by localizing cracks within a given zone by
the use of dividing strips which are embedded in
the floor and extend> to the surface thereof. y The
dividing bar also serves to divide the upper por
tion of the floor structure into predetermined
patterns which adds tothe appearance of the
ñoor.
20
25
tially circular.
Fig. 8 is a cross sectional View, taken on line 10
VIII-VIII of Fig. 7, and,
Fig_ 9 is a fragmentary view, showing the join
ing of the dividing bars.
j
Throughout the several views, like characters
designate similar parts, and the numeral l0 indi
cates a typical terrazzo floor, having a series of
The principal object of the present invention
is the provision ‘of a binding bar made of` a strip
In the construction of the floor, the base I6 is
first formed with a substantially planar surface
of sheet metal having parallel, unbroken, op
posed edges, and being lformed at its center p0r
tion to present a continuous rib with spaced apart
and permitted to harden, then the cement screed AO O
I8 of uniform thickness is laid.
While this
screed layer is still sufliciently soft, the dividing
enlargements, perforated to present anchoring
bars I4 are forced to position so as to rest on the
openings whereby the strip is secured in the op
base with its upper half extending above the sur
erative
position.
Y
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throughout its length and terminating in a plane
face of the screed, or so that it is substantially
half embedded in the screed, as shown. The
screed is then permitted to harden.
ì
The design as shown in Fig. 1 is a group of
parallel with the major planeof the strip,`where
rectangular panels, _each panel being completely
surrounded by binding bars. These rectangular
throughout its length,
panels may be formed by placing a series of the
30 by the major thickness of the strip is uniform
.
»
Another object of this invention is the pro
vision of a dividing bar having uninterrupted,
parallel, straight edges, and offset `at its center
35 portion to present a longitudinal rib of irregular
form, with spaced apart openings, whereby the
bar will naturally take the form of a circular arc
when forced from its planar shape.
Other objects and advantages of the present
invention will appear as the description proceeds
and will be set forth and claimed in the appended
claims.
Reference will now be had to the accompany
45 ing drawing, wherein:
,
Figure 1 is a fragmentary, perspective view of
a terrazzo floor, partly broken away to disclose a
binding bar embodying this invention. '
Fig. 2 is an elevation of a portion of one of the
50 binding bars.
Fig. 3 is a top edge view of the binding bar
shown in Fig. 2.
Fig. 4 is an enlarged, cross sectional view of the
bar, taken on line IV-IV of Fig. 2, and positioned;
55
of the binding bar, wherein the enlarged portion
of the rib and its associated opening is substan
panels I2, separated by dividing bars I4.
`
p Another objectof the present invention is the
provision of a binding bar with a rib formed
40
- Fig. 5 is an enlarged, vertical, cross sectional
View, taken on line V--V of Fig. 2.
Fig. 6 is an edge view of the bar, showing its
natural form when one end thereof is secured
and the other end is subjected to a side pressure. 5
Fig, '7 is a fragmentary view of a modified form
in a floor structure.
`
‘
'
long bars 2U in parallel relation and then setting
short bars 22 between the adjacent long bars to
produce the desired result. One end of the short
bar may be cut at a right angle to the major axes
of the bar, while the opposite end will necessarily
be cut irregularly to permit the top portion there
of to contact the'long bar above the rib and to
clear the lower rib as it is moved to position in
the green cement screed. When the screed I8 is
thoroughly hardened, the terrazzo coating 24 is
then placed and permitted to harden, after
which it is surface ground.
The dividing bar I4 consists of a single strip of
sheet or ribbon metal, having uninterrupted, par
allel, straight edges I5, and being offset along its
longitudinal central portion to form a longitu
dinal rib 26 on one side of the bar and a groove
28 in the other side thereof. At spaced-apart in
tervals the width of the rib 26 is enlarged as at 50
30, thereby making it possible to form openings
32 through the crest of the rib to serve as anchor
in_g means for the cementitious material.
Referring to Fig. 3, it will be observed that the
j outer extremity of the rib 26 is disposed in a plane 55
2
2,127,709
parallel with the major plane of the bar, thus
making it possible to make uniform cutting of the
irregular cut end 34 of the short cross bars, While
the other end thereof is cut perpendicular to the
Si major axes of the bar as shown at 36. Referring
to Fig. 9, it will be noticed that the irregular end
34 of the abutting bar rests against the upper
surface of the longitudinal bar, while the offset
portion thereof rests against the rib to maintain
the transverse bar in the vertical position. This
will hold true regardless of the position of 34 along
the transverse bar, since at all points the rib lies
in a plane parallel with the major plane of the
strip. Also, 34 might be diagonally or otherwise
cut, leaving only the upper portion of the bar end
at a right angle to the straight edges.
The inclined walls 38 of the enlarged portion of
the rib are of such proportion and shape that the
strength of the bar to resist transverse movement
is substantially the same as that of the portion of
the bar intermediate the openings 32, thereby
making it possible to exert transverse pressure
against one end of the bar when the other end is
securely held to cause the bar to take the form of
the arc of a circle. This feature of construction
makes it possible to definitely and uniformly form
arcuate strips of any desired curvature, thereby
lending to the usefulness of the bar in forming
decorative designs. Heretofore bars made of uni
30 form width with openings formed therethrough at
intervals, have had the tendency to bend easier at
the openings, thereby forming an irregular curve
when the bar is subjected to a sufficient bending
strain. lThis objectionable feature is overcome in
the present bar.
t is apparent that with the present bar many
different designs might be produced by cutting it
to proper lengths and by binding it transversely
to the desired shape.
In the modified form, the shape of the rib en
largement andthe hole formed therethrough is
made substantially circular in form, however,
this bar has substantially the same features as
set forth in the preferred form.
This bar is well anchored in the screed I8 and
also in the top floor layer 24 when placed as
clearly shown in Fig. 1 with the dividing line of
these two layers centered in the offset portion of
the bar. Also, the materials of both layers Will
be bound together through the openings 30. Rib
26 also serves as a gauge to determine the depth
to which the bar is to be inserted.
This bar is substantially symmetrical above and
below the longitudinal center line, and for that
reason may be reversed to use either of the
straight edges at the surface of the floor.
When positioning the bar in the floor material,
it is essential that it remain in a straight line or a
set curved form, and this is accomplished by the
formation of the bar as described above. In other
words, it is sufliciently rigid to allow for the usual
handling without any material distortion.
What I claim is:
1. A dividing bar for terrazzo and like ñoors
comprising a sheet metal bar of uniform width,
having uninterrupted, parallel, straight edges;
said bar being formed to present a centrally dis
posed longitudinal rib at one of its sides and a
corresponding longitudinal groove in the other
side thereof, said rib having enlargements at
equally spaced-apart intervals, provided with
openings whereby the floor material may extend
therethrough, said rib being so formed and rein~
forced throughout its entire length as to present
uniform resistance to a binding force, whereby the
bar will naturally take a regular arcuate form
when bowed transversely.
2. A dividing bar for terrazzo and like floors
comprising a sheet metal bar of uniform width,
having uninterrupted, parallel, straight edges; a
centrally disposed longitudinal rib formed on one
side of said bar having spaced-apart enlarge
ments, each enlargement having an opening
formed therethrough, said rib terminating
throughout itsI length in a plane parallel with the
major plane of the dividing strip, said bar being
so formed throughout its entire length as to pre
sent uniform resistance at all points thereof to a 0
lateral bending force, whereby the bar will take a
substantially arcuate form when a bending force
is applied to its opposite ends.
3. A dividing bar for terrazzo and like floors
comprising a sheet metal bar of uniform Width,
having uninterrupted, parallel, straight edges; a
centrally disposed longitudinal rib formed on one
side of said bar having spaced-apart enlarge
ments, each enlargement having an opening
formed therethrough, said rib terminating
throughout its length in a plane parallel with the
major plane of the dividing strip, said bar being
substantially symmetrical above and below its
major axes whereby it is reversible.
4. A dividing bar for terrazzo and similar fioors 45
comprising a sheet metal bar of uniform Width
having uninterrupted, parallel, straight edges;
said bar being centrally offset to form a longi
tudinal rib at one side of said bar and a longitudi
nal groove at the other side thereof; a series of
spaced-apart enlargements in said rib and groove,
each of said enlargements having an opening
formed therethrough to serve as anchoring means
for the bar, said bar being formed to present a bar
having a uniform resistance throughout its length
to a transverse bending movement.
SAMUEL C. AWBREY.
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