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Патент USA US2066052

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Dec. 29, 1936.
F. J. PLYM .
EXPANSION JOINT
Filed June 25, 1934
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2,066,052
Patented Dec. 29, 1936
UNITED STA
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2,066,052
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EM’ANSION JOINT
Francis J. Plym,- Niles, Mich, assignor to The
Kawneer Company, Niles, Mich.-, a corporation
of Michigan
Application June 25, 1934, Serial No.‘~'7,32,192
7 Glaims. (01. 94-18)
Among the-objects of the present invention is in the drawing, the novel joint construction is
to provide a novel expansion [joint or connector disclosed as made in sections, with an upper sec—
tion I and a lower section 2 mounted intermedi
ate slabs 3, 3 of concrete or the like making up
for concrete slabs or the like as used in the build
ing of roads or other surfaces. This joint or
connector permits the slabs to expand or con
a road or other surface.
each provided with an upper and a lower ?ange
5 and 6. The upper ?anges 5 are received wlth-»
in the beads ‘I of a ?exible head plate 8. The
from the joint ‘or connector and at all times
maintaining a weatherproof connection.
A further object of the invention is the pro
vision of a novel connecting joint formed of resil
ient metal suitably anchored to the adjacent slabs
but permitting adequate expansion and {con
traction of the slabs under all conditions of tem
'10
perature and/or moisture.
15
lower ?anges seat upon the web 9 of comple
mentary anchoring plates or bars i0 extending
transverse of the joint and slabs.
The lower section 2 is provided with opposite
side walls ll having at their upper ends ?anges
I2 seating against the base or lower surface of
the webs 9. The lower end'of the section 2 is
provided with a corrugation or ?exible part 13.
This ?exible part l3 along with the ?exible head
8 readily adjust themselves and permit the nec
.
Another object is the provision If a novel means
for connecting adjacent slabs whereby to prevent
the seepage of moisture therebetween, but at the
same time permit complete expansion and con
traction of the slabs under any and all condi
20 tions to which the slabs may be subjected, par
ticularly when said slabs form a road surface.
A still further object is the provision of a novel
expansion joint for use intermediate slabs formed
of concrete or other road or building surfacing,
essary expansion and contraction of the adja- '20
the joint being provided with overlapping and
interlocking projections or ?ngers permitting
2 OI
@
complete expansion and contraction under any
and all weather conditions, and at the same time
insuring a proper alignment and replacement of
the slabs when returning to normal.
n _
Further objects are to provide a construction
of maximum simplicity, e?iciency, economy and
ease of assembly and operation, and such further
objects, advantages and capabilities as will later
35 more fully appear, and as are inherently pos
sessed thereby.
The invention further resides in the combina
lustrated in the accompanying drawing, and
40 while there is shown therein a preferred embodi
ment, it‘is to be understood that the same" is
susceptible of modi?cation and change, and
comprehends other details and constructions,
_ without departing from the spirit of the inven
tion.
.
'
In the drawing:
cent slabs but at the same time prevent the seep
age of water or moisture intermediate these slabs
which would tend to' undermine the road or other
surface. Asphaltv or other pliable and water
proof ?ller It provides further protection for the 25
joint. Although the space intermediate the side
plates is disclosed as empty, any ?ller of yield
able material may be used therein so long as it
permits a free expansion and contraction of the
slabs.
30
The transversely extending plates, bars or
'members 10 are each shown as provided with
outwardly projecting tongues or projections l5
and i5,3 which are oppositely bent or ‘formed.
These tongues or projections are clearly disclosed 35
in Figs. ,1 and 3, and become embedded in the
concrete or other material forming the slab. 'The
opposite end or edge of each plate is also stamped
tion, construction and arrangements-of parts il
45
,
The upper section l comprises side plates 4,
tract without -danger of the slabs separating
,
Fig. 1 is a view in vertical cross section through
\ the'novel expansion joint mounted intermediate
slabs of concrete or the like.
Fig. 2 is a fragmentary view in perspective of
or bent to provide staggered or off-set ears or
projections l6 and it“. These ears or projec 40
tions I6 and Hi3 of adjacent plates or bars over-'
lap or interengage as clearly ‘disclosed in Fig. 1,
and thus although permitting’free sliding move
ment of the plates as these slabs expand and
contract, they do maintain the slabs and oppo 45
site side walls of the joint in proper alignment
and prevent vertical displacement thereof. Each
plate is rigidly mounted upon the ?anges 6 and
I2 of the upper and lower sections by means of
rivets or the like l1. If desired, any other suit 50
the upper portion or head plate of the expansion . able connecting means such as spot welding or
the like may be employed. _
joint.
\.
,
one of the connecting plates or bars.
55
_
Fig. 3 is a fragmentary view in perspective of
'
Referring more particularly to the disclosure
By reason of the present construction, the ex
pansion joint may be made of relatively thin,
?exible metal and the slabs may freely contract
2
2,066,052
‘ or expand without danger of any leakage or seep
age of water from the road surface.
The an
choring projections I 5 and I 5“ of the bars or
plates I 0 become embedded in the'concrete or
other material forming the surface or slab so
that the opposite side walls of the joint and the
alignment during the expansion and contraction
‘ of said slabs.
4. An expansion joint for connecting adjacent
slabs of a concrete roadway or other surface,
comprising spaced metallic sections adapted to 01
be moved relative to each other as the slabs con
bars or plates III are always rigidly connected or . tract or expand, and means for anchoring each
_ mounted-upon its respective slab. By reason of section to its respective slab, said means includ
the construction of these bars or plates and their
10
interlocking interengagement, the opposite side
walls of the joint are freely movable toward or
ing transversely extending plates, one connected
to each section and ‘each plate provided with
oppositely disposed projections adapted to be
away from each other, but are Prevented from 4 embedded in the material of the slab for anchor
relative vertical movement.
Having thus disclosed the invention,
15
I claim:
‘
1. An expansion joint for connecting normally
spaced slabs or blocks of surfacing material sub
ject to expansion and contraction, comprising
spaced members ?exibly connected at their upper
,20 and lower ends, and a transversely extending
plate connected to each section and provided at
its one end with oppositely projecting tongues
adapted to be embedded in the material of the
adjoining slab and at its other end provided
with alternate projections adapted to contact
ingly engage with complementary projections on
the adjacent plate whereby to maintain said sec
tions in a proper alignment.
‘
2. An expansion joint for connecting adjacent
30 slabs of paving material subjected to expansion‘
and contraction forces, comprising plates con
nected to adjacent slabs and spaced apart to
35
tions and having their outer ends embedded in .
the slabs and their inner ends in telescoping in
terengagement and thereby permitting free slid
ing movement of said sections during expansion
and contraction of the slabs but preventing rel
ative vertical movement therebetween.
6. An expansion joint for connecting adjacent
slabs of paving material subjected to expansion
and contraction forces, comprising spaced mem
bers ?exibly connected at their upper and lower
ends, and anchoring platesone connected to each _
member and extending transverse of the slabs,
said plates having their outer edges formed with
take care of any expansion and contraction of
said slabs, and telescoping members mounted on
oppositely bent projections adapted to be em
bedded in the material of the slabs and their
and projecting inwardly from said plates and
provided with staggered projections adapted to
slidingly interengage and to maintain said plates
in proper alignment during said expansion and
inner edges free and in sliding engagement.
contraction.
~10
ing therein each section and its respective plate.
5. An expansion joint for connecting adjacent
slabs of paving material subjected to expansion
and contraction forces, comprising spaced sec
tions forming an expanding and contracting
chamber therebetween, and transversely extend
ing plate members anchored in said spaced sec
3. An expansion joint for connecting adjacent
slabs of a surface subjected to weather conditions,
comprising spaced plates on the‘contiguous ends
'7. An expansion joint for connecting adjacent
slabs of paving material subjected to expansion
and contraction forces, comprising spaced mem
bers, ?exibly connected at their upper and lower
ends, and an anchoring plate connected to each 10
member with their outer ends embedded in the
material of the slab and their inner ends in over
of the slabs, transversely extending members each . lapping relation to permit longitudinal expan- "
connected to a plate, and complementary over- , sion and contraction of said slabs and maintain
45 lapping projections on said members extending
alignment between said sections.
'
45
inwardly of said plates and thereat slidingly in
ter-engage for maintaining the plates in proper
FRANCIS J.. PLYM
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