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Патент USA US2132107

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‘Oct. 4, 1938.
_
A, HAMM
_
2,132,107
ROAD ROLLER
Filed April 10, 1957
' 2 Sheets-Sheet 1
/m’enior'.'
Atois Hamm
A, but“ 5.Arromvsy
Oct. 4, 1938.
A_ HAMM
2,132,107
ROAD ROLLER
Filed April 10, 1937
Sheets-Sheet 2
57 mm x ?aw‘
AT-raANI-Y
:- f " A'
' '"runners-10,1937,'zserial‘naisalc'z'i 3
f.1n_Germ'anyfSeptember_~23, 1935' , ‘a
120mm, (01.94450) ' v
,j
The present invention relates to a road-roller, ' . Further andother objects
[>1 -
of thevpresentiin
more particularly to a three-roll roller or a roller - _ vention will-behereinafte'r set forth in the ac- - I ,
of the so-called tandem type in which the posi- >
tion of the front and ‘rear-‘rollers can be changed '
5 with respect to one another;
_
_
It is an object of the present invention to pro
vide a road-roller .of- the type referred to, the
rolling widthof whichcan be-‘changed as ‘long
as therollerris standing still as well as when it
10
is in motion.
I
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a
e.
,
show'what I now consider to be a preferred em'-_ 5'
bodiment, of my invention.
In‘ the drawings:
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q
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1 is a side viewof a road-roller according
to the present invention with parts. broken away.
Fig. 2 is atop view of a road-roller according ' 1°
An object of the present invention resides in
the provision of a road-roller of such-design that
to the. present invention, the motor and driving
mechanism of which areomitted in order toniake
the formation of undesired undulations‘on the
the showing of the invention clearer.
road surface is. avoided.
Fig. 13 is a top view of a road-roller according
to the present invention, the individual rollers of 15
'
>
ll. Another object of the present invention isto
provide aroad-roller in which the fork-shaped
bow members or axle-holders for holding the
front and rear rollers are situated horizontally
and in which saidmembers are provided with
20 transverse parts which are individually provided
with curved surfaces which abut one. another
and are located between and guided by plate
shaped parts, which parts carry bolts which are
adapted to cooperate with and move in curved
slots provided in said transverse members, and
one of said parts being adapted to carry the
'
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which are in position for increased effective roll- a
ing width.
_ '
Fig. 4 is a top view of a road-rolleraccording
to the present invention, the individual rollers ofv
which are in position for moving around curves. 2'0
Referring-more particularly to the. drawings:
the axles 2 and 2' of the rollers or'rolling drums'
I and I’ carry the horizontally p'ositioned-axle- ‘
holders or how members 3 and 5.v Member 3 is
provided with a curved surface 3' forming part
of a cylinder with substantially vertical-axis. ‘A
25
driving- motor of said road-roller, the driving.
curved surface 4’ is provided also in connection
mechanism and other equipment of the road roll
with member 5. The bow members‘ 3 ‘and. 5 are‘ ,
'ing machine.
30
companyingf speci?cation and‘ claimsand shown
in the‘ drawings which,;by ‘way (of illustration,v
.
'
It is a further object of the present invention
to provide a road-roller, the effective rolling
width of which can be adjusted at any operating
condition of the roller and in which the position
of the axes of the rollers can be changed indi
35 vidually with. respect to one another when the
adapted to move in between guiding ‘members
such as. the plate-shaped members “and I5 of 3° '
the illustrated embodiment. The guiding“v mem
bers l4 and I 5are interconnected by means; of
bolts 6 and 6' and pressed togetherby springs ‘23
and 23',.respectively, which are associated with: '
said bolts and permit movement of said bolts in 35
machine is standing still as well as when it is in - the direction of their longitudinal. axes. They
motion, whereby movement of the machine upper member 15 ‘carries the motor-l9, the gear _
through curves and at voluntarily variable ef
box 1, ‘and other equipment of the machine which
fective rolling width isv made possible. with the are not shown in detail because they do not form
mechanism according to vthe present invention,
the position of the axis of each individual roller
can be changed while that of the other roller ‘is
not changed, and it is also possible to change the
position of front ‘and rear rollers simultaneously.
With conventional road-rollers, undulations on
the road surface are caused by the substantially
horizontally swinging motions made by the up
right bows. Due to the horizontally positioned
and abutting bows of the machine according to
50 the present invention, this disadvantage is elimi-i ’
nated.
.
1
The present invention is ‘applicable to .three
roller machines as wellas to tandem machines
and can be used in combination with steam power
66 or other power drives.
part of the present invention.
At least one of ' '
the axle-holders, in the embodiment of the pres?
ent invention shown, axle-holder 5, may be pro-v
vided with an intermediary part 4 which is con- '
nected with axle-holder 5 in such manner that
vertical motions of one part relative to the other'4‘5'
are possible. Part 4 is provided with'said curved ;
surface 4’ which abuttingly cooperates with ‘the .
previously mentioned surface 3’. Bolts .6 and 6’ are adapted to move in the curved slots I1 and
Y
I ‘I’ of members 3 and 4, respectively. , ‘50.
The transverseparts of the members 3 and 4
are hollow and provided with toothed rims l3
and I3’ with which pinions I6 and t6’ cooperate,
which pinions are revolvably secured to said
members It. and I5. Ifone ofthe pinions.- I555,
2
2,182,107
and Ii’ is turned, the position of the axis of the
roller with which it is associated is changed.
Turning 01 pinion l6 and/or I6’ is effected by
revolving the hand wheels I! and/or [8’. To
these hand wheels, bevel gears 20 and 20', re
having bow-shaped portions so arranged as to
abut against each other with said bow-shaped
portions, and a guiding member on top of said
axle-holders and between said drums for holding
spectively, are connected which are individually
connected to and adapted to drive shafts 2| and
plane, said axle-holders being movably connected
2i’, respectively, to which spur gears 22 and 22’
are connected, respectively. These spur gears
are connected to and adapted to individually
drive pinions l6 and I6’, respectively. By ma
nipulation of the hand wheels l8 and/or IS’, the
position of the axes of rollers l and/or l' is
rotatable relatively thereto.
changed jointly or individually.
Connected with one of the guide members I4
and ii are wedge-shaped parts l2 which, at the
said axle-holders in a. substantially horizontal
to said guiding member so as to be individually,
i
A
3. In a road roller, the combination of at leas,
two rolling drums, an axle and a substantially
horizontal axle-holder for each of said drums, said
axle-holders being arranged substantially at one
side of their associated drums respectively and
having bow-shaped portions so arranged as to
abut against each other, with said bow-shaped 15
portions, a guiding member on top of said axle
position of the mechanism shown in Fig. 2, fill
holders and between said drums for holding said
the space between the curved surfaces 3' and 4’
and the members I 4 and l 5 and thereby aid in the
axle-holders in a substantially horizontal plane,
stability of the‘imachine.
ually turning said holders relatively to said guid 20
By suitable operation of the pinions l6 and i6’,
and means on said guiding member for individ
ing member.
‘
the position of the axes of rollers ‘l and I’ may be
4. In a road roller, the combination of at least
changed in such a manner that said axes move two rolling drums, an axle and a substantially
parallel to one' another, whereby the operating . horizontal axle-holder for each of said drums, said
25 width of the machine is changed as is shown in axle-holders being arranged substantially at one
Fig. 3, or the angle enclosed by the axes 2 and 2’ side of their associated drums respectively and
is changed as sh :wn in Fig. 4, whereby the ma
having bow-shaped portions so arranged as to
chine is adapted ‘to move around curves of any abut against each other with said bow-shaped
radius. By suitaqe combination of an operation portions, and two guiding members between said
30 according to Fig. and Fig. 4, any rolling width drums, one of said guiding members being ar 80
can be adjusted aliio when moving around curves. ranged above the other one for holding said axle
0n turning pinion‘; l6 and/or pinion l6’, bolt 6 holders in a substantially horizontal plane, said
and/or 6' moves in the guide slot l1 and/or I'I'.
Due to the frictiori of surfaces 3' and 4' of the
members and movably connected thereto so as to
gears 2|], 20', 22, arid 22’, the once adjusted posi
be individually rotatable relatively thereto.
tion of the axles 2 2and 2' remains until the next
5. In a road roller, the combination of at least
two rolling drums, an axle and a substantially
horizontal axle-holder for each ‘of said drums,
adjustment takes place.
The power of motor I9 is transmitted through
suitable gearing, which is located in box ‘I and not
shown in detail because it is not a part of the
present invention, to shafts 8 and 8' which are
provided with universal joints 24, 25 and 24', 25',
said axle-holders being arranged substantially at
one side of their associated drums respectively 40
and having bow-shaped portions so arranged. as
to abut against each other with said bow-shaped
respectively, and which shafts by means of bev
elled gears 9 and 9', respectively, drive spur gears
portions, two guiding members between said
[0, II and III’, ii’, respectively. Gear wheels II
and H’ are connected with and drive rollers I and
rang'ed above the other one, for holding said axle
holders in a substantially horizontal plane, said
I’, respectively.
axle-holders being arranged between said guiding
.
While I believe the above described embodi
ments of my invention to be preferred embodi
50 ments, I wish it to be understood that I~ do not
desire to be limited to the exact details of design
and construction shown and described, for obvious
55
axle-holders being arranged between said guiding
drums, one of said guiding members being ar- '
members, and means on the upper guiding mem
ber for individually turning said holders relatively
to said guiding members.
modi?cations will occur to a person skilled in the
6. In a road roller, the combination of at least
two rolling drums, an axle and a substantially
horizontal axle-holder for each of said drums,
art
said axle-holders being arranged substantially at
What I claim is:
.
.
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1. In a road roller, the combination 01' at least
two rolling drums, an axle and a substantially
horizontal axle-holder for each of said drums,
said axle-holders being arranged substantially at
one side of their associated drums so as to face
each other, a guiding member on top of said axle
holders and between said drums for holding said
axle-holders in a substantially horizontal plane,
one side of their associated drums respectively
and having bow-shaped portions so arranged as
to abut against each other with said bow-shaped
portions, t'wo guiding members, one above the
other one, for holding said axle-holders in a sub
stantially horizontal plane, said guiding member 60'
being resiliently connected to each other, said
axle-holders being arranged between said axle
holders and movably connected thereto, so as to
said axle-holders being movably connected to said
be individually rotatable relatively thereto.
guiding member so as to be rotatable relatively
thereto, and an individually controllable gear for
each of said drums on said guiding member for
two rolling drums, a substantially horizontal axle
altering the positions of said axle-holders, inde
axle-holders being arranged substantially atone
' pendently of each other, relatively to said guiding
70 member.
, , 2. In a road roller, the combination of at least
two rolling drums, an axle and a substantially
horizontal axle-holder for each of said drums, said
axle-holders being arranged substantially at one
78 side of their associated drums respectively and
'7. In a road roller, the combination of at least 65
and an axle-holder for each of said ruins, said
side of their associated drums respectively'and
having bow-shaped portions so arranged as to 70
abut against each other with said bow-shaped
portions, two guiding members, one above the
other one, for holding said axle-holders therebe
tween in a substantially horizontal plane, and
connecting bolts for said guiding members, said 75
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2,182, 107
bolts engaging said holders respectively in curved
slots provided in said holders so as to permit said
axle-holders to rotate relatively to said guiding
members.
8. A device as claimed in claim 7 in which each
bolt is provided with a spring bearing against one
of said guiding members to hold them in resilient
engagement with said axle-holders.
_
9. A road roller comprising at least two drums,
10 an axle and a substantially horizontal axle-holder
for each of said drums, a motor and a transmis
sion for driving said drums, said axle-holders
being arranged substantially at one side of their
associated drums respectively and having bow
15 shaped portions so arranged as to abut against
each other with said bow-shaped portions, two
guiding members between said drums, one of
said guiding members being arranged above the
other one, for holding said axle-holders there
20 between in a substantially horizontal plane, and
controllable means for individually turning said
axle-holders relatively to said guiding members,
engagement with said toothed surfaces of said
axle-holders and pivoted in said guiding mem
bers, and individual driving means for said pin
ions on top of said upper guiding member.
11. In a road roller, the combination of at least 5
two rolling drums, an axle and an axle-holder for
each of said drums, said axle-holders having bow
shaped portions and being so arranged as to
abut against each other with said bow-shaped
portions, a guiding member for holding said axle I.
holders in a substantially horizontal plane, wedge
shaped members between said axle-holders and
attached to said guiding member, bolts for mov
ably connecting said axle-holders respectively to
said guiding member, said bolts engaging said 15
axle-holders in curved slots provided therein, and
means for individually turning said axle-holders
relatively to said guiding member.
12. In a road roller, the combination of at least
two rolling drums, an axle and a substantially
horizontal axle-holder for each of said drums,
said axle-holders being arranged substantially at
said motor and transmission and said controllable one side of their associated drums respectively
means being mounted on said upper guiding mem
and having bow-shaped portions so arranged as
. to abut against each other with said bow-shaped
25 ber.
10. In a road roller, the combination of at least portions, at least one of said axle-holders con
two rolling drums, an axle and an axle-holder for sisting of parts with a limited freedom of motion
each of said drums, said axle-holders having bow
in vertical direction relative to each other, to per
shaped portions and being so arranged as to abut mit vertical movement of the corresponding axle
relatively to the corresponding bow-shaped por
30 against each other with said bow-shaped por
tions, two guiding members, one above the other tion, and a guiding member for holding said axle
one, for holding said axle-holders therebetween in holders in a substantially horizontal plane, said
a substantially horizontal plane, connecting bolts
for said guiding members, said bolts engaging
35 said axle-holders respectively in curved slots pro
vided therein, toothed surfaces in rigid connection
with said axle-holders respectively, pinions in
axle-holders being movably connected to said
guiding member so as to be individually rotatable
relatively thereto.
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ALOIS HAMM.
35
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