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Патент USA US2038605

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April 28, 1936-
Filed March 12, 1954 7
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26 d
_25 ÉMJIIWIÈTTHIWU "umylmllif , .
.2 vsheets»sheet v2 '
Patented Apr. 28, 1936
'raANsLoAn Bass fronfao'sn , Lionvrs
Robert s,..aobemonfsohieamfzsu.,»asignar to
The Translodemînlntiiàßompany, Chicago, Ill.,
'a corpòr'ationotîslllinois ì
Application Maren 12, 1934, serial 110.115,144
zo Claims. (0194-18)
- The present invention relates to road Joints and
more particularly to load transmission 4base units
for serving as supports for removable'y core units
for forming air expansion voids betweenadjacent
5 concrete sections oi' a road or similar concrete
It is an object of this invention to provide an
f .~ y
Figure 4 is a reduced fragmentary vertical
detail section taken online IV--IV of Figure 1
to show the arrangement of the anchoring wings
forming a part of one of thebase sections.
Figurer 5 illustrates a. fragmentary vertical 10’
detail section taken through a section of a con
crete road enclosing an expansion IJoint forming
unit including a. modiiied form of load transmis
sion base for supporting a modified form of void
It is also an object of lthis invention to provide
forming core unit.
Figure 6 is a fragmentary horizontalsectionai
view taken on line VI--VI of Figure 5 with the
concrete omitted and with parts brokenaway to
tion may be transmitted from one section to an
It is a further object of7 this invention to pro
vide a road joint- forming mechanism for forming
20 either expansion or contraction’ Joints, said mech
anism including improved load transmission base
members one or more of »which is provided with
anchoring means to be embedded in concrete to
permit a section or sections to be moved trans
25 versely of the road joint with the expansion and
show the details of construction.
As shown on the drawings:
VFigures l to 4 of the drawings illustrate a `road
expansion joint forming mechanism including an
grade I. Formed upon the subgrade 'i is a con- 25»
crete upper or crown section of the ,'road.
temperature changes.
The crown section of the road is divided by
, '
It is'iurthermore an object of this invention to
30. transmission base having load transmission an
chor shoes shiftably mounted therein' for sup
porting a void forming core unit in position.
It is an important object of this invention to
provide a road Joint forming mechanism with a
35 load transmission base unit consisting of inter
i'ltting base sections having anchoring means
forming thereon whereby the base sections are
adapted to' be transversely shifted with respect
to one another due to the expansion and contrac
40 tion of road sections due to temperature changes.
Other and further important objects of this in
vention will be apparentfrom the disclosures in
the speciiicationeand the accompanying draw
The invention (in a preferred form) is illus
trated in the drawings andhereinafter morefully
On the drawings:
Figure 1 is a transverse vertical fragmentary
50 section taken through a portion of a_ concrete
road through an expansion joint forming a part
thereof and including an improved load trans
improvedload transmission base, which as illus
trated in Figure 1, is supported on a road suïo-`
contraction’of the concrete road sections due to
provide a'road joint mechanism'including a load
from the load transmission base unit.
expansion road joint. ,
cluding a base unit constructed of sections slid
ably» interiìtting with one another and having
anchoring means' formed thereon whereby‘loads
1.1 from adjacentsections of the concrete construc
Figure 3 is a fragmentary side elevation of one
of the load transmission anchor strips removed
improved load transmission base unit- for an air
an'air expansion Joint forming mechanism Ain
expansion joint forming unit having parts there
of broken away and parts shown insections.
means of a longitudinally. disposed center joint
andby transversely disposed contraction and 'ex
pansion joints which divide the upper portion lof 30
the road into a plurality of adjacently positioned
concrete sections 2 which are permitted to expand
and contract with temperature changes. f
'I'he improved load transmission base unit is
constructed offtwo transversely shiftable inter- .-35
fitting side units A kand B. The base side unit-A
is constructed of comparatively light weight sheet
metal which is‘bent into form to provide a socket
section comprising a base lplaten` having tem
porary stop lugs or- iingers 4 struck upwardly 40
therefrom at spaced intervals. The base -plate 3
is curled upwardly to form a bight portion «Sand a
top plate 6 which is spaced above the base plate 3
and projects beyond the inner margin of vsaid
base plate 3. The inner margin oi the top plate .45
6 is provided with a plurality oi!v spacednotches
leaving spaced portions which are, bent upwardly
at substantially right angles from the top plate
6 to form retaining flanges 1.
The base side section B compris- s a- base `plate 50
of a heavy piece-of metal‘ß whic `,has the inner
longitudinal margin thereof projecting into the
mission road joint base embodying the princi
space 9 provided in the base side section A. »The
ples> of this invention.
projection of the base plate 8 into the chamber
l is. stopped when the side edge of the base ß
Figure 2 is a fragmentary top plan view of an
,plate contacts the stop lugs! as clearly illustrated
nected .by 4.any suitable type of removable core
in Figure 1. 'I'his arrangement permits a por- . _cap similary `to the arrangement illustrated in
tion of the base plate 8 to extend beneath the Figure 5_ which'will hereinafter lbe described.
base plate 8. The outer longitudinal margin of , ,_„ As illustrated in Figure 3_ eachy of the anchor
the heavy base plate 8 is provided with a plurality ‘ing plates I1 has the upper margin thereof cut
of spaced notches -Ill leaving dove-tail portions at spaced intervals and the material resulting
which are bent upwardly at substantially right from said cuts is deñected outwardly to provide
angles, to provide anchoring blades or wings II a plurality o_fîanchoring blades or wings 22 which
which form a row of main anchoring members
10 for the base section B. Struck upwardly from
the outer marginal portions of the base plate 8
and staggered with respect to the main anchor
ing blades II are a plurality of spaced auxiliary
to be transmitted from one section to another.
anchoring blades I2 which are of ldove-tail shape. '
will be noted that loads from adjacent sections
Both the main and auxiliary anchoring blades
of the road are. not' only adapted to be> trans
mitted from one section to another by means of
Il and I2 respectively, are adapted to be em
bedded in concrete as clearly illustrated in Fig
ure l to -securely anchor the load transmission
base section B in a road section 2, whereby the
20 base plate 8 is adapted to have sliding interiltting
engagement.- with the base section A'when the
concrete section 2 in which'the anchor blades Il
and I2 are embedded expand jor contract due to
temperature changes. i
In the improved form of road expansion joint
forming mechanism illustrated in Figure 1, vit`
the anchor plates I1 but by the load transmission
base sectionv B whichis anchored incone of the
road sections 2 by means of the main and aux
iliary anchoring blades II and I2 whereby the
base plate 8 is adapted to be shifted with re
spect to the base section A with _the expansion
and contraction of the road sections in which the
base unit B-is anchored. The stop lugs 4 pro
vided in the base plate 8 are simply yused as a"
it is- an upper base plate I8 of. lighter weight -temporary expedient for limiting the inward
sheet metal which has aV downwardly deflected movement of the base plate 8 into the chamber 8.
With the expansion ofthe road section in which
strip I8 the margin of which is deflected outward
' ly to forma supporting strip or flange. I5 which - the anchoring 4blades Il and I2 are anchored.l
seats- upon the top .surface of the base plate. the base plate 8 slides inwardly over the base 30
plate 8 and -will deiiect the'stop lugs] fdownward
8 and has the longitudinal -edge thereof abut
Supported on the base plate 8 and spaced above
ting against the inner side of the auxiliary an
choring blades I2. The supporting -strip I5 is
spot-welded or otherwise secured rigidly to the
35 base plate 8. The inner margin of thetop plate
I8 oi' the base section B is provided with ayplu
rality of spaced notches and the material be
tween the notches is bent upwardly to provide
stop iianges I8.
are adapted to be embedded in the concrete sec
tion 2 permitting the load from adjacent sections
The two interfitting base sections A and B are
supported on> the subgrade I. in interiltting rela
tion and have supported therein a pair of oppo
sitely positioned interñtting anchoring shoes each
of which as clearly illustrated in Figure 3 com
45 prises a vertical or upright plate’or strip I1 hav
ly or shear them oil'.
. With the yimproved expansion joint forming
mechanism illustrated in Figures 1 to 4 inclusive,
it will- be notedfthat thebase section is con
structed to permit loads from one concrete sec
tion 2 to be transferred into an adjacent section
even whenthe anchoring shoes I1 are omitted.
It will thus be noted »,-that with the improved
joint mechanismfthat loads may be transferred
from one section to an adjacent section by both
the anchoring shoes land by means of the im
proved load transmitting base unit B.
Figures 5 and 6 illustrate a modiñed form ol' v
load transmitting unit for supporting a core form
ing ‘the lower margin deflected outwardly at sub
ing unit in position between adjacent concrete
stantially right angles to form_ a plurality of
sections of a road.
spaced supporting feet or flanges I8.which are
separated 'by spaces or openings I9 permitting
the supporting feet -I8 'of one anchoring plate
In this form of the device, the base unit is
adapted to be seated upon the subgrade I and,V
consists of two transversely shiftable interfitting 50
I1: tol project beneath the opposite anchoring
base sections C and D. The base section C com
plate I1 as clearly illustrated in Figure 2. 'I'he
supporting feet I8 of the anchor plates I1 are re
versed and staggered with respect to one another
and project into the’chamber 8 of the base sec
tion A and into the chamber 28 formed in the
base section B. As clearly illustrated in Figure' 3
the notches I8 provided between the supporting
feet I8 of the anchor plate I1 extend a _short
distance above the top surfaces of the feet I8
to permit the notched inner margin of the base
top plates 8 and I8 toseat in the anchoring plate
I1 with the retaining flanges 1 and I6' project
ing upwardly between the spaced plates I1 as
85 clearly illustrated in Figure 1.
The anchoring plates I1 which project upward
ly above the load transmission base sections
A and B are spaced `apart for the reception of
removable core plates 2|, the lower margins of
70 which are seated between the respective retain
ing flanges 1 and I8 and against the inner faces
of the plates I1 whereby the core plates 2l have
the lower margins thereof properly spaced to
provide an expansion void therebetween. The
upper margins of the core plates 2| may be con
prises a comparatively heavy sheet metal base
plate 28 having one longitudinal margin thereof
cut `out to provide a plurality of spaced notches
separated'by spaced portions which are bent up 55
wardly Vat substantially right angles to provide
main anchoring wings or blades 28. Struck up
wardly from the base plate 28 is a row of auxil-`
iary anchoring blades or wings 28 which are
formed in a row parallel to the main anchoring
blades or wings 28. As clearly illustrated in Fig
ure 6, the main andl auxiliary anchoring blades
or wings 28 and 25 are staggered with respect to
one another. Spot-welded or otherwise rigidly
secured to the top surface of the base plate 28 65
adjacent the inner side ofthe auxiliary anchor
ing blades 25' is anangle bracket or support 28
which is integrally rformed on one longitudinal
margin of an upper base plate 2_1 constructed of
light weight sheet metal and .disposed substan 70
tially parallel to the lower,~ heavier >base plate 28.
v The base section D comprises a base plate 28
constructed of substantially heavy weight sheet
metal and is slidably supported transversely upon
the top surface of the base plate 28 and projects 75
, 3
`the »concrete sections 2 ofthe road.
beneath the upper base plate 21'vas clearly ilius-` i 4.base32isleft
in position. ` ’f i;` `
ooi'e- '
`tratedin Figure 5.r The outer longitudinalïmar
V*gin of'y the base plate. 28 Áis provided with spaced " 1' lAfternthe removal of‘ the void forming core unit
notches leaving a lplurality ot spaced sections members, :fethe ¿upright iianges 35 oi'the angle*
which are deflected upwardlyfìat substantially members are bent inwardly' toward oneanother
right angles to form main anchoring yblades'or i toreceivean arched closure plate or bridge mem
wings 2l, Also struck upwardly froml the base «berïupon which a filling of a bituminous mate
I* f
"rial is ' deposited to close the cracks between the
plate 2l are a plurality of auxiliary` anchoring
bladesor wings 3,0 which are arranged fin arow
10 substantially parallel to the row> of main anchor
,upper .portions of the concretey sections 2.,- "îA '
>construction similar» tothat' just described may 10
ing blades or wings”. As shown in Figurelô the ' be> found inimyco-pending application for pat
' .ent for a» ‘.‘Road joint mechanism withyoid form
anchoringblades orßwings 28‘and 30 arefstag
ing tunit” illedNovember'l'l, 1933, U.- S.'Serial
vgered with'respect 'to one another.> Rigidly‘se
cured to the under side of the outer marginalk por
. v>Inthe form of the deviceillustrated in Figures'
15 tion of the top base plate 28 is the upper marginal
flange of a'deflected supportingfstrip Il which _ 1 to 4vinclusive, the load transmission base‘unit
hasiassociated therewith anchoring angles vwhich
has the Vlower iiange thereof suported or rest
one another, with the base flanges or feet
ing >on the subgrade I. The supporting-,strip or ~ interiìt
andL staggeredv with respect to one
foot member 3i serves to support the outer longi
another. In the form of the device illustrated in 20
20 tudinal portion of the upper basevsection 285§at a 'Figures 5 and 6, the anchoring >shoes are omitted
height substantially 'equal to the thickness of the
and the voidforming core unit is supporteddi
lower baseplate 23.
l ‘
-In ‘this form of load transmission base unit,_-the rectly upon the load‘transmission base unit.
It will, oi course, be ,understood that various
two base plates 23A and 28 overlap one ,another
details of constructionmaybe'varied through a
range without departing fromthe principles
anchored-in adjacent concrete sections~2 of fthe wide
this invention, and it is therefore not the pur
road.l 4This arrangement permits the base‘plates of
pose >`to ¿limit the patent granted >hereon other-f
to be moved transversely with respect to'one an
other for the purpose of transmitting loads from wisel than necessitated by the scope of the ap
30 one concrete section _to Ianothery when -\ the road
sections expand due to temperature changes.
i When the improved load'transmission base unit
No. 698,437.
kpended claims.
I claim asl my invention: l
l. A* road joint forming mechanism compris
is used in the .construction of` an air' expansion
ing a load transmission base‘unit having an
joint for a road, a hollow core unit is» supported
forming `core yunitfrem‘ov'ably supportedon the
35 on the upper base plate 28 as clearly illustrated
choring ymeans struck therefrom, vand' a void ‘
iny Figure 5. The void forming core unit may be
base unit. .
'of any desiredconstruction.k
nism >comprising a» base unit, staggered anchor
ing means struck therefrom, and avcore unit
ysupported on the base unit.
In the present joint, a core unit is used in com
bination with the base unit and is of the hollow,
40 removable type comprising va. grooved base 32
formed with a longitudinal middle ridge with
grooves on opposite sides thereof in which the
lower; margins,l ofgjremovable" core plates 33 are
seated.v l The .upper .margins of the core.; plates 3l
45 are deflected inwardly to afford ‘shoulders upon
which are.' temporarily Íseated angle members
comprising mounting .ñanges 3,4/ and upright
ilanges 3.5. )The upright iiangesyßä are -‘held
clampedagainst the upper. margins vof the-core
plates 2l by means ,of a corelcap J6 which carries
a: centrally disposed downwardly projecting web
~ 2'. A »roads espansion joint forming k.mecha
3. ‘In a road joint forming mechanism of the
class described, kthe' combination "with (a `base
unit, of interñttingf angle members vshiftably ì `
' supported thereon, anchoring `means on the an
gle `members for anchoring Athe angle members 45
in adjacent road `sections,~andva void forming
core unit supported .onf the base unit between
the angle
4. In an expansion joint forming mechanism
the Ácombination with a base unit having anchor 50
ing means thereon. of anchoring members"'shift
ably supported in the base unit and inter?tting »
or middle -plate 31 which projects downwardly be
tween the core plates and between the spacing one'another, and a void forming core'unit sup
ported on the base unit between the anchoring
nanges 38 secured vertically on the inner sur
55 faces of- the core plates $3. The spacing members
5. In a road joint forming mechanism a base
38 are staggered withV >respect to one another as
unit comprising a hollow base section, a sec
clearly illustrated in Figure 6.
With the complete road joint former compris ’ ond base, section transversely shiftable“ there->
Iing the load transmission base unit and the .void in, and anchoring means struck from the second ’
`base section.
forming core unit in position on the road'sub
6. A road joint forming mechanism including
grade, concreteis pouredupon the subgrade on
to embed the various members thereof. After
the concrete has been vallowed to set a desired
in combination a base unit comprising a pair
of transversely shiftable interiitting base sec
tions having rows of staggered anchoring means
amount, the core cap “together with thel de
pending web or plate -31 thereof is >pulled upward
ly out of the concretefleaving the angle members
through the base unit.
opposite sides of the joint forming mechanism
34,-“ with the base flanges 34 thereof em
formed thereon for the transmission of loads
from one concrete section to an adjacent section
'1. A road expansion joint forming mechanism
bedded inthe concrete while the upright ñanges vincluding in combination a. load transmission
70 35 project into the void or expansion space. >With
base unit comprising a chambered base section, 70
the removal of lthe separating or spacer plate 31 a base plate shiitably engaged -therein, and rows
from between thecore plates, the plates 33 are of 'anchoring means onthe base plate for trans
loosened from the _concrete and are moved into, mitting loads across the joint from one lroad
section to another.
the void and> pulled upwardly out of the oon
l8. -A road expansion joint forming mec
crete leaving an expansion void or space between
including in combination a -base unit compris
. ing'interñtting transversely shiftable base sec
tions, and kanchoring means integrally formed in
staggered relation thereon for transmitting ,loads
between adjacent 'concrete' sections ot a road.
9. A road expansion joint forming mechanism
comprising in combinationv a base unit consist
ing of a chambered base section, a base plate
transversely shiftable therein - and projecting
10 therefrom, and a plurality yof staggered rows oi'
anchoring members formed on the base platey
and projecting upwardly therefrom tobe _em
bedded in concrete for 4transmitting loads from
one concrete road section to another through
the base unit.
nism including in combination a load ~transmis
sion base unit, a void forming- core unit mount
ed thereabove, an anchor means between the
base unit and the void forming core unit, said
anchor means comprising- interñtting reversed
:angle members having a plurality ot-anchoring
blades formed thereon'and, projecting in oppo
site direction from the void forming core unit.
15. _A road expansion joint Vformingv mecha
nism including in combination a load transmis 10
sion device .comprising a plate, a plurality o!
spaced, supporting members integrallyiormed
on the lower margin thereof-and projecting from
one side of the plate, and a vplurality of'anchor
ing blades struck'i'rom vthe upper margin of the 15
plate and projecting outwardly from 'the oppo
10. In a road expansion joint forming mech
anism a base unit comprising telescoping base' lsiteïfside' of the plate. ‘
`sections having anchoring means formed there
16. A road joint former including in' combi
on to be embedded in 4concrete road sections for nation a base unit adjustable in width and hav
transmitting loads from one road section to 'an
ing anchoring means thereon for transmitting
other through the base'unit, andload transmis
sion` anchor shoes engaged in the base _sections
and alternately anchored in adjacent roadsec
11. A road >expansion joint forming mecha
nism including in combination a base unit com
prising transversely shii'table interiltting base
sections, and a plurality oi' staggered rows oi'
~spaced anchoring members formed on one of
30 said base sections to be embedded in concrete
for the transmission .of loads from one road sec
tion into an adjacent section through the inter
iltting base secti0nS-_._..
l2-. An expansion joint formingv mechanism
including in combination a base uniti' compris
ing a pair of overlapping base plates transverse
ly shiftable with respect to one another, and a
plurality of staggered rows oi' anchoring means
on said base plates >to be embedded in concrete
road sections i'or transmitting loads -from one
road section to another through the base unit.
13. In a‘road expansion joint forming mecha
nism the combination with a load transmitting
base unit, of load transmitting members trans
versely shiftable with respect to the base unit
and each comprising a plate, a plurality 'of
spaced supporting members projecting outward
ly from one side thereof, and a~plurality o! an
chor members projecting outwardly from _the
opposite side thereof.
14. A road expansion joint forming mecha
loads between adjacent concrete road section_sin
which the base unit is embedded, and‘alter
nately reversed anchor members -alternately an
chored in the adjacent road sections and shift
ably engaged in the base unit.
17. A road joint former including in combina
tion a core unit, -and a plurality of reversed
telesceping anchoring members disposed trans
versely of the core unit.
18. A road joint former including in combina 30
tion a core unit, a plurality of reversed slidably
interiitting members disposed transversely of the
core unit, and anchoring means on said mem
bers to be embedded in _concrete on opposite
sides ot the core unit.
19. A road joint former including in combina
tion a loadtransmission device comprising a
plate having spaced members on one margin
thereof and anchoring'members on an opposite
20. In a road joint former, a load transmit
ting means comprising a pair,of plates, spaced
members formed on said plates, with the mem
bers of one plate reversed and slidably interflt
ting between the members of the other plate, 43
and anchoringmeans on said plates to be em
bedded in adjacent sections of a concrete road
to cause transverse shifting `0I the plates due to
the expansion or contraction of the road -sec
tions resulting from temperaturechanges.
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