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Патент USA US2138103

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I Nov. 29, 1938,
E, B. JQRGENSEÑ
l
2,138,103
ROAD PAVING MACHINE
Original Filed April 50, 1935
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3 Shee‘bS-She'ei l
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INVENTOR.
ATTORNEY.
Nov. 29, 193s.
E; à, JORGENSEN
2,138,103
ROAD PAVING MACHINE
Original Filed April 30, 1935
3 Sheets-Sheet 2
/7
INVENTOR.
BY/äßwfm
ATTORNEY.
Nov. 29, 193s.
E, B, JORGENSEN
2,138,103
ROAD PAVING MACHINE
original Filed Apri-1 so, 1935
s sheets-sheet 3
/3
INVENTOR.
111%@
ATTORNEY.
Patented Nov. `29», 1938
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UNITED TÍ-STATE
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2,i3s,1o3
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ROAD‘PAVING'MACHINE
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Enoch Berg Jorgensen,LosAngelea'fCalìf., as-l ~
' >`signor, by mesne assignments, to Viber Com
pany, Los Angeles,lCalif,.,’a corporation of Cali
fornia
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~ Y»Continuation of application Serial No. 19,055,
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-. April 30,1935.y This application Augúst 9, 1937,
-Serial No. 158,150
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_ v claim. ` (crei-¿48x _
This invention relates to paving machines, and which.k holds the strike-off ,bar >132 in rigid posi- î
in particular „tomachines for laying plastic ma- ` tion relative to the carriage frame, is afìnishing
terials such as concrete upon a prepared roadway;
plate 38 which is free to be moved over the top <
This application `is a continuation of -myg cof; ,surface4 ofthe paving material. Inthe following
5 pending application Serial No. 19,055, ñled April
description and claims,-concrete is specifically re- . 5 . v
30, 1935. The objects of my; invention are to pro- .. `ferred to, but the machine ¿may be usedin WOI‘k-v
vide a machine which levelsoffand compacts a , ing anyother suitable plasticmaterials >which .
mass of concrete or other plastic materials placed _ may be employed for paving, including black -or
upon the roadway; to; provide a machine ,whichV
asphaltic'mixtures and the like.
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L0 vibrates the concrete andother plasticmaterials u . - My machine is preferably used along a roadway 10I
in place on the roadbed; to provideïa »machine
which has been graded and prepared for paving `
which givesva compactand finished'pavementpto
by providing headers l1 for the margins of ï the
provide _a machine with means for vvibratingrthe.v pavement.
It is also usually the practice to in-- «
plastic material on a roadbed between crosswise ' sert at intervals, cross-members, indicated at 43,
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l5 expansion joints, and with means for raising and ` >which may be lumber, or may be pre-formed ex- 15
lowering the vibrating mechanism over ,these i pansion joint vmemberamade of compositionvma#
joint members; toprovide. a .method for placing , terials. The Wheels yI6 of the carriage of my ma
and finishing -a plastic mass‘as. a paving.
These ‘ chine are -designed to roll` on the headers .|1,
and other objects will be apparent from the0 fol- . although lother traction means may be employed;
zo lowing description and the drawings in which ‘
The carriage may be propelled along thehighway 20
Fig. 1 is a side section taken v4at l-I `of Fig». 4,
of one form of my paving-machine; .»
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by any suitable means, such as a motor mounted \ .
‘ , von thecarriageto `drive thewheels I6 or'the ma
Fig. 2 is a partial side section taken-at 2-2 of ' chine may be attached to `other‘equipment used i
Fig. 3, of a portionof my machine showing the similiarly over the roadway; or by tractors at the
,
g5 vibrators in a partly withdrawn position. Í
\ " - I side of the roadway. Also there may be'assembled 25
Fig. 3 is a forward end elevationof the machine, on‘vthe carriage of my machine _a gas" propelled
with the vibrators in position indicated in Fig.: 2,.v engine to drive 'the vibratorsA directly through
and with parts and gportionsibrokenaway to> flexible 4drive shafts„orva gas propelled motor for
facilitate illustration; `
30
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ydriving air compressors tofurnish compressed air
Fig. 4 is a pl view of the paving machine, with » . for air motors attached to- the ‘vibrators’ 20, or 30
parts and po ions removed to facilitateV illustra-> .. for driving a generator to supply electrical-‘energy '
tion.
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for the .vibrator motors 22 if Aelectric motors.
- My paving machine, in, one form, consists of a. . This auxiliary equipment maybe selected to suit
` carriagehaving side members H, cross members , the conditions applying where the road yis` being
35 I2, I3, I4, and |5,'wheels I3 adapted to travel on-
headers or side boards Il forming the iside mar-l
paved.
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The structure of my machine may bel varied in~
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gins of the roadway. The wheels .Ilì‘aresup-` detail, thearrangementshown being simple and
ported in bearings lßby shafts I9.l lVibrators 20y ydesigned »toillustratethelprinciples, andtoshow
connected by flexible driveA shafts .2l to'rotary 'one embodimentof >my invention".v `Four Asimilar
40 means 22 are mounted by clips 30 upon‘support
vibratorunits‘20 are shown butrany number may 40 " ‘
members> 23 which .are attached to the shaft 24, besused; asrequired, toset the concrete in suit- `
which is adapted to-be rotated inthe bearings 4l' :able'vibration across the full width of the paving
mounted on the side members I I‘.. Arworm 25 on' strip or slab. A‘Itvhas' been well demonstrated here-`
a shaft 26 rotatably held inbrackets 21 and hav- » r`tofore that ‘high frequency vibration `oftunset
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i5 ing a handwheel _28 operates through the vvormï'> concrete mixes causes the material to flow and be 45
gear 29‘to raise and lower thesupport members compacted >into a designated space,` giving' _a
23, and the vibrators‘20 attached thereto. "»L'ongil denser» and strongerfñnished concrete. vThetudinalsupport members 3|: for'theraislng and vIvibrators may> be «of ‘ any suitable‘fmechanism
lowering means are attached tothe. carriage cross- J ‘which will- produce'. high frequency/vibrations `in f
50 members r'I3 and I4. A strike-off bar 32 v»whose >theV concrete; an eccentricxweight mounted upon 50
vertical position is adjustable by means of slots
33 and bolts and nuts,34,:isattached tothe under-
a shaft within a protecting shellbeing a preferred
` form. Such a .vibrator is shown in my co-pending
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side of the carriage~ frame by bracket means 35,r patent applicationASerial No.,'7,927 `datedvFebru
with angle braces 36 to the cross-member I4.` At.- lary 23, '1935, issuedl> as> Patent No.v 2,018,789
55 tached _by chains 3l to theebracketmeans 35,
October‘29, 1935. ‘By the use' of yvibration fre- 55
2
2,188,103
quencies of 4,000 to 10,000 per minute, it has been
found that quite dry mixes may be compacted
upon the roadbed by pulling through the dis
tributed mixtures, vibrators of the above type. In
operation, the rapidly vibrating vibrators 20 are
lowered into the concrete mixture which has been
previously distributed roughly over the desired
area between the headers Il, by rotating the
hand-wheel 28, which operates throughthe worm
gearing 24-25 to revolve downwardly the sup
porting frame 23. The vibrators 20, being
vibrated rapidly by the rotation of the 'motors 22 'A
through the flexible drive shafts 2| quiciqy dig
their free ends into the moist’ loose concrete.
Simultaneously the paving machine is moved for
ward along the roadway and the vibrator tubesy
up tothe top surface where the vibrator leaves
the concrete.
As the whole machine is moved forward. the
vibrators 20 are re-inserted in the concrete (to
the left of 40 in Fig. 2) and the `vibrators again
‘take the inclinedpositions as shown kin Fig. 1
as the’machine moves still farther forward. 4'I'he
vibrators 20 must be kept operating, thatv is vi
brating, during the insertionI passage through,
v and withdrawal from the concrete mass on the
roadbech
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>In the preferred arrangement of parts, as
shown and above described, electric motors drive
the eccentrically weighted shafts in the vibrators
20, through the flexible drive shafts 2|; and in
each unit the motor. and vibrator are so placed~
20 take the position inclined downwardly and
as to more or less counter-balance each other ~
rearwardly as indicated in Fig. 1, and are pulled
on the supporting members 23. The vibrators
20 clined position of the vibrator has been found to 20 may be operated in- any suitable manner, by
electric motors, or air motors, and they may be 20
be important in producing' a compact mass of` >attached
as shown, or coupled close to the vi
concrete, and in closing up the furrow made by brating tubes 20. The arrangement
shown pro
in this position through the concrete. This _in
the vibrator as it passes through the mass.- It
vides the necessary flexible vibration-dampening
has also been found that by using the vibrator
25 tube in this inclined position that any air trapped
in the concrete, which would cause voids, passes l
up around the inclined tube, thus allowing- the Y
concrete immediately above the lower .tip of the
vibrator tube to be compacted from the bottom
connection’between the motor andthe vibratorl
itself, and the support 23, so that the whole ma--4 25
chine-is ~not vibrated, and -thus increasing the
available vibrational energy which may be trans
mitted directly tothe concrete. «The vibrator'k
units' 20 may be so constructed as to contain
30 to the top of the layer.
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the motive power andthe eccentric weight as 30'
' While the use of my machine requires that the van integral yvibrating mechanism.
concrete mass be distributed fairly evenly over i' <'I'he method of operation consists in vibrating
the roadbed ahead of the machine, to overcome ‘ the spread-out concrete mass by Ipulling through
the disturbance oflevels _caused by >pulling the ' it vpartly submerged vibrating elements, hereby
35 vibrators through the concrete. and to provide
1 causing the unset concrete in proximity with the 35
for the final leveling of the top surface after‘
compaction, a strike-off bar 32 is placed abovev
the vibrators 2_0 in their lower position. It has .
been found‘tha't since the vibrators 20 cause the
40 mass of concrete in ,the immediate surroundings
to vibrate, that this strikefofîvbar 32 will func
tion best if rigidly attached to the carriage frame. -f
Its vertical position is made adjustable to suit ,
the particular operating conditions. As pointed
_vibrators to be set in vibration, and simultane
ously striking ofi the top surface by means of
a rigid strike-off bar, and smoothing and slick- ~
ing over the iine mixture of sand', cement and `
water which rises‘ tothe' surface during vibra
tion, by dragging a finishing 'plate over the sur
40
face immediately after the vibration, and while
the mass is stillvibrating. ï
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While I have lillustrated my invention by one
45 out, as the concrete is vibrated,»someof the "ce- ~
preferred embodiment, I do not wish- to be lim
ment paste”, that is some fines including cement - ited by‘this particular arrangement of parts,
with water comes to the surface, following par
ticularly'the path of the inclined vibrator tubes. ~
The strike-ofi bar 32 levels off the‘concr'ete, par
50
ticularly this-fine materialwhich floats >to the
top, and the final road finish is produced by the
finishing plate 38, which is attached behindthe
strike-off bar 32 and directly above the lower
end of the partly submerged inclined vibrator
55 tube 20, in its lower position. I have discovered
that a sheet metalA plate 38, preferably'curved Y
with the convex‘surface forming’the contact on
the surface of> the concrete, and without weight
ing, and attached for loosely dragging‘over ‘the
60 surface, gives a _satisfactory road surface finish.
The concrete under the finishing plate 38 is in _
but desire to include within the vscope of my
invention thecombinations and' arrangements
substantially as set forth in the following claims.
1. In a road paving machine adapted to travel 50
along a prepared roadway upon which has been
placed aniunset-and uncompactedÍ concrete mix
yture, vibratorymeans attached to said carriage
land adapted toA be moved through-’the concrete,
a crosswise top-'leveling strike-off bar rigidly at 55
tached to the carriagevof said machine and'adapt
ed to roughly level oil.' the top surface of the
vibrating concrete mixture between said vibratory
means and said strike-off bar, an unsupported
surface-finishing plate adapted to'float on the
to`
vibrating condition from the action >Aci' the vl- ' top surface. of the concrete and to be dragged
brators 20.
Vibrations »are transmitted vto-«the
over» the concrete surface behind-the strike-off v
plate 38, and this, floating plate under its own , bar4
at a' position substantially directly over'the65 weight brings the proper amountof fine mate
lower end> of the vibratory means.
v
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rial and water to the surface to insure the cor
,2. Inl a road paving machine adapted to travel 65
rect surface compaction and smoothing. f
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To avoid or skip the> cross-partitions or. ex
pansionjoints which are used in long stretches
along a prepared roadway upon which has been
distributed an unset and uncompacted concrete
mixture, partly. submergible tubular vibratory
of pavement,A thevibrators 20, as they approach means
downwardly and 'rearwardly rela
these cross members V40 are gradually raised to `tive toinclined
nthe
forward
of 'the machine and 70
a vertical position as indicated in Fig. `2. The adapted to be moved inend
this
position through4 the
vibrators are then lifted out ofthegconcrete by
the further rotation of the support l23, thus vi- ' unset concrete with-the forward movement of
75 bratingall of the concrete upto the Joint and
the machine.l a‘crosswise top-leveling strike-'ofi'
bar rigidly attached to the carriage of said ma-- 75
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2,138,103
chine at a position rearwardly of the top surface
end of said vibratory means, and a surface-finish
10
20
25
30
ing plate adapted to be dragged over the vibrat
ing portion of the concrete at a position sub
stantially above the lower end of the vibratory
means and rearwardly of the strike-off bar.
3. In a road paving machine, a carriage adapt
ed to travel along a roadway upon which has
been distributed an unset concrete mixture, in
sertible vibrators connected by ilexible shafts to
rotary means, supporting means for said vibra
tors adapted to hold said vibrators in a rearward
ly inclined position in said concrete mixture dur
ing vibration and forward movement of the car
riage and also adapted by rotation to withdraw
and insert the vibrators in the concrete, means
for rotating said support, a finishing plate posi
tioned on the concrete surface above said inclined
vibrators in their fully inserted position and
adapted to be dragged by the carriage over the
surface of a vibrating portion of the concrete.
4. In a road paving machine, a carriage adapt
ed to travel along a' roadway upon which has
been distributed an unset concrete mixture, in
sertible vibrators, actuating means for said vi
brators, supporting means for said vibrators and
actuating means attached to said carriage and
adapted to hold the vibrators within the concrete
mixture during vibration and forward movement
of the carriage and to withdraw or insert the vi
brators in the concrete, means for rotating said
support, a strike-off bar attached to the carriage
across the roadway and rearwardly of the point
of said vibrators into the concrete, and'asurface
ñnishing plate extending transversely between
the margins of said roadway adapted to be
dragged over the vibrated concrete at a position
substantially directly above the lower end of the
vibratory means and rearwardly of the strike-off
bar.
t
6. In a road paving machine adapted to travel
along a prepared roadway upon which has been
distributed an unset concrete mixture, a carriage, 10
a pluralityof encased rotary vibratory mecha
nisms, means attached to said carriage for rais
ing and lowering said vibratory mechanisms into
and out of the unset concrete, attaching means
for said encased vibratory mechanisms’to said 15
raising and lowering means including a non-rigid
connection between said encased mechanism 'and
said means for raising and lowering adapted to
prevent the vibration of said raising and lower
ing means, rotary means for actuating said vibra 20
tory mechanisms, a crosswise strike-off bar rigid
ly attached to the carriage of said machine and
adapted to roughly level off the top surface of
the vibrating concrete mixture between said vi
bratory means and said strike-off bar, and a sur
25
face finishing plate extending transversely be
tween the margins of said roadway adapted to be
dragged over the vibrating concrete at a position
substantially directly above the lower end of the
vibratory means and rearwardly of the strike-oir 30
bar.
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7. In a road paving machine adapted to travel
along a prepared roadway upon which has been
of insertion of the vibrators, and a finishing plate ~ distributed an unset concrete mixture, a carriage,
positioned rearwardly of the strike-off bar and
a' plurality of encased rotary vibratory mecha
adapted to be dragged by the carriage over a
nisms, lever means attached to said carriage for
vibrated portion of the concrete.
inserting and withdrawing said vibratory mecha
5. In a road machine, a carriage adapted to
travel along a prepared roadway upon which has
nisms into and out of the unset concrete and for
holding said vibratory mechanisms in inclined po
sition downwardly and rearwardly of the front 40
ofthe machine, attaching means for said vibra
tory mechanisms to said lever means including a
non-rigid connection between said encased mech
anism and said lever means adapted to prevent
the vibration of said lever means, rotary means 45
for actuating said vibratory mechanisms, a cross
wise strike-olf bar rigidly attached to the car
riage of said machine and adapted to roughly
level oiî- the top surface of the vibrating concrete
mixture between said vibratory means and said 50
been distributed an unset and uncompacted con
crete mixture, partly submergible tubular vibra
tors inclined downwardly and rearwardly relative
to the forward end of themachine and adapted
to be moved in this position through the unset
concrete, means for actuating said vibrators, sup
porting means for said vibrators and actuating
means adapted to move in a circular path per
pendicular to the roadway surface, the vibrators
being disposed tangentially to this circular path
so that at the lower end of the path the vibra
tors are in inclined position within the concrete
and at the upper end of which path the lowest
portions of the vibrators are entirely out of and
above the roadway, means for moving the support
through said circular path, a crosswise top-'level
ing strike-ofi bar rigidly attached to said carriage
at a position rearwardly of the points of entry
35
strike-off bar, and surface iinishing plate extend
ing transversely between the margins of said
roadway adapted to be dragged over the vibrating
concrete at a position substantially directly above
the lower end of the vibratory means and rear
wardly of the strike-off bar.
l ENOCH BERG JORGENSEN.
55
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