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Патент USA US3049260

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Aug- 14, 1962
G. R. DEMPSTER ETAL
3,049,250
COMPACTION BODIES
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Aug' 14, 1962
G. R. DEMPSTER E‘l'AL
3,049,250
COMPACTION BODIES
Filed Sept. 4, 1959
5 Sheets-Sheet 2
INVENTORS
BY
ATTORNEYS
Aug' 14, 1962
G. R. DEMPSTER ETAL
3,049,250
COMPACTION BODIES
1NVENTOR5 '
Aug. 14, 1962
G. R. DEMPSTER ETAL
3,049,250
COMPACTION BODIES
Filed Sept. 4, I959
5 Sheets-Sheet 4
.7.
56
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INVENTORS
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ATTORNEYS
Aug. 14, 1962
G. R. DEMPSTER ET AL
3,049,250
COMPACTION BODIES
Filed Sept. 4, 1959
5 Sheets-Sheet 5
a5°
.9
M+MJL
ATTORNEYS
3,049,250
Uited States
Patented Aug. 14, 1962
1
2
3,049,250
FIG. 4 is a top plan view of the hydraulic cylinder in,
extended position showing the cylinder support bracket
and trunnion-type mounting;
COMPACTlON BODIES
George R. Dempster and William A. Herpich, Knoxville,
FIG. 5 is a similar view showing the cylinder re
Tenn, assignors to Dempster Brothers, Inc., Knoxville,
tracted;
Tenn, a corporation of Tennessee
FIG. 6 is a side elevation of the cylinder detached, and
in retracted condition;
FIG. 7 is a top plan view of the hydraulic cylinder,
showing a modi?ed mounting therefor;
Filed Sept. 4, 1959, Ser. No. 838,178
11 Claims. (Cl. 214-82)
This invention relates to improvements in compaction
bodies of the type used for the collection of refuse, gar
bage, and the like, and having means therein for com
10
FIG. 8 is a cross section showing a modi?ed form of
cylinder support carrier;
pacting such refuse during collection and for discharge
FIG. 9 is a top plan view similar to FIG. 7, but show
therefrom. This application is a continuation-in-part of
ing a modi?ed support for the hydraulic cylinder;
our copending application Serial No. 708,788, ?led Janu
FIG. 10 is a partial end view of the central portion of
ary 14, 1958, now abandoned.
15 the support of FIG; 9; and
Compaction type bodies are usually provided with a
vFIG. 11 is a side elevational view, partially in section,
compaction head mounted in the body, which is moved
of the support of FIG. 10.
lengthwise thereof for compressing the material into the
The invention is shown in FIG. 1 in connection with
rear portion of the body as it is collected, until the body
a motor vehicle having a trailer chassis shown in the
reaches the point of discharge whereupon the material 20 form of a low-boy trailer, generally indicated by the
may be removed therefrom. The compaction head must
numeral 1, and including a self-propelled controllable
be moved throughout the major portion of the length of
tractor vehicle, usually of the type having an operator’s
the body and to varying degrees therein during this com
cab, which tractor vehicle is generally indicated at 2.
Mounted on the chassis 1 is a compaction body 3 which
pacting action, which involves a comparatively long
stroke. When using a conventional multi-section hydrau
may be of any suitable shape. The body is provided
lic cylinder for movement of the compaction head length
with a hopper or other ?lling opening, generally indi
wise of the body, the long stroke required introduces
cated at 4, in the forward end thereof, and with a dis
problems of mechanical support which frequently render
charge opening ‘5 at the rear end thereof, usually closed
such actuating means unsatisfactory for practical use.
by doors or other means for effecting discharge of the
Also, in such a device the compaction head itself is sub
contents from the body. The details of the body are
ject to misalignment with relation to the walls of the
not shown in the drawings because the invention may
compaction body.
be applied to many different types of compaction bodies
One object of this invention is to provide a compac
and because the construction of such bodies is well
tion body of the type described which utilizes a multi
known in the art and is not necessary to a clear under
standing of this invention.
section hydraulic cylinder not subject to the aforemen
tioned problems.
Operatively mounted in the compaction body 3, and
Another object of the invention is to provide a com
movable lengthwise therein, is a compaction head 7
paction body having a multi~section hydraulic cylinder
which substantially ?lls the cross sectional area of the
equipped with movable support means attached thereto.
body in the normal construction and is supported for
A more speci?c object of the invention is to provide 40 movement by longitudinally slotted guide means 9 mount
ed on either side thereof.
a compaction body having a multi-section hydraulic cyl
inder equipped with longitudinally movable support
Referring now to FIG. 3, where the compaction head
means pivotally supporting an intermediate portion of
7 is shown in cross section, it is seenthat the head has
the cylinder.
angle elements 19 at opposite sides thereof and suitably
Still another object of the invention is to provide 45 secured thereto. Fastened to the angle elements 19 by
bolts 21 or other conventional means are elongated shoe
guide means for the compaction head which eliminates
any misalignment with respect to the compaction body
members 23 which may be made, for example, of cast
walls.
iron. These shoe members fit inside of, and slide longi
A still further object of this invention is to improve
tudinally within, the hollow tubes 9 secured in the side
50 Walls and extending throughout the length of the com
the construction of the compaction body.
These objects are accomplished in a preferred embodi
paction body and forming the guide means. The ar
ment of the invention by mounting a compaction head in
rangement thus described provides a simple yet e?‘icient
a body for movement lengthwise thereof. A multi-sec
means of supporting and guiding the compaction head
throughout its lengthwise travel.
tion hydraulic cylinder having an intermediate support
member attached thereto is connected to the head by 55 The compaction head 7 is actuated by a multi-section,
double-acting, telescoping type hydraulic cylinder, gen
means of a trunnion-type mounting for causing the de
erally indicated at 11, operated by a hydraulic pump and
sired lengthwise movement of the head. The support
power unit which may be located at the forward end of
member moves with the section of the cylinder to which
it is attached and provides the required stability therefor
the chassis 1 and is generally indicated by the numeral
when the cylinder is in an extended position.
This embodiment of the invention, together with cer
tain modi?cations therein, are illustrated in the accom
13.
panying drawings in which:
FIG. 1 is a side elevation of a compaction body and
Referring now to FIG. 4, the hydraulic cylinder 11 is
shown in an extended position. The cylinder 11 is made
up of ‘four telescoping sections 36, 37, 38, 39, and one
stationary section 40, and is known in the art as a four
trailer assembly incorporating the features of the present 65 stage cylinder. It is to be understood, however, that
the number of sections is governed by the length of
invention;
.
stroke required and may be varied accordingly.
FIG. 2 is a section taken through the cylinder support
A cylinder support member 15 is shown mounted on
one of the intermediate sections, as section 38, and
FIG. 3 is a cross section taken through the compaction 70 adapted for movement therewith. Section 36 is equipped
head and adjacent portion of the body, on the line 3—3
with trunnions 17 which are journaled in split bearings
in FIG. 1;
41 in the adjacent ends of arms shown as channel mem
bracket, on the line 2~—2 in FIG. 1;
.
3,049,250
3
4
In turn, arms 43 extend to and are suitably
offset vertically and supported by the conventional ?fth
secured at their opposite ends, as by welding, to the
compaction head 7.
The cylinder 11 is shown as supported at its front
wheel, indicated at 46, on the chassis of the tractor ve
hicle 2. Also mounted on the offset forward end por
bérs 43.
end -on a pivot pin 45 and at its rear end, on trunnions
17, extending in bridging relation therebetween. If de
sired, a pivot pin may be used, instead of the trunnion
tion of the trailer chassis 1, is a body portion 47 ex
tending ‘forwardly of the vehicle from the compaction
body 3, at the forward end of the latter. The hydraulic
cylinder 11 is mounted in the body extension 47, and
the anchor means 45 is secured to the body portion 47
and arm, to support the rear end of the cylinder 11, as
in suitable manner as by a pivot pin.
shown at 68 in FIG. 7, engaging in an eye directly on
As will be apparent from FIG. 1, the hydraulic cyl
the base end of the section 36 of the cylinder 11 and 10
in a suitable bracket on the compaction head 7.
‘In operation, the section 40 is suitably secured to the
trailer chassis 1 as by means, such as an anchor pin
inder 11 extends lengthwise of the compaction body 3,
either axially thereof or along a line parallel to the
longitudinal axis of the compaction body. it is pre
ferred that the cylinder 11 should lie substantially in a
45, which may form a pivot therefor. Fluid is forced
into the left end of section 40 through a series of con 15 horizontal plane for uniformity of travel of the compac
tion head 7. The cylinder is shown as midway between
nections, ports, and ducts (not shown) causing the sec
the longitudinal guides 9 at the opposite sides of the
tion 36, and consequently the compaction head 7 to
body. The latter continue uninterrupted by the body 3
move to the right. When the section 36 is extended,
along opposite sides of body extension 47, for smooth
the section 37 is acted upon, and so on until the cylinder
passage of the support member 15 along the length of
is completely extended. The force of the ‘forward stroke
the guides.
of the hydraulic cylinder 11 is transmitted to the com
paction head 7 through the arms 43 connected with the
trunnions 17 mounted on section 36 of the cylinder or
It will be apparent also that the guides 9 serve to
by the pivot 48 (FIG. 7).
receive and to guide both the compaction head 7 and
the support for the cylinder 11. The guide shoes 23
The cylinder is retracted in reverse order, by forcing
?uid through a second series ‘of connections, ports, and
guides but they travel in the same guides upon opera
ducts (not shown). The details of the multi-stage cyl
inder 11 and of the hydraulic system and valves, are
not illustrated because any suitable construction may be
and 35 are spaced apart lengthwise of the respective
tion of the hydraulic cylinder 11. The compaction head
7 is mounted in the guides at opposite sides of the head,
as shown in FIG. 3. The support member 15 extends
'used in a manner which is known in the art and forms 30 in bridging relation between the same guides 9 as shown
in FIG. 2. This support member 15 carries an inter
no part of this invention.
The cylinder support member, generally indicated by
mediate portion of the hydraulic cylinder when the latter
the numeral 15, extends in bridging relation between
is extended and, therefore, tends to sustain the extended
length of the cylinder. As will be apparent from FIG.
the longitudinally extending guides 9 located in opposite
side walls of the compaction body 3. Member 15 is
adapted to move with the section of the cylinder to
which it is attached and provide support therefor when
the cylinder is in an extended position.
The construction of the cylinder support member 15
is more easily understood by making reference to FIG.
2 of the drawings which is a cross sectional View of this
structure. The support member is herein shown with a
collar having detachable upper portion 25 which coop
crates with the lower portion 27 to securely clamp a
section of the hydraulic cylinder 11 therebetween. As
seen from FIGS. 5 and 6, the collar is mounted on the
cylinder in a manner such that it does not interfere with
4, this makes it possible to operate the compaction head
with the hydraulic cylinder arranged horizontally and
thereby obtain more eifective action by the cylinder.
The cross sectional shape of the slotted guide tube 9
may be modi?ed as desired, according to the shoe that
is accommodated therein. Such a modi?cation is illus
trated in FIG. 8. The trailer body 3 is shown with a.
channel guide 49 welded or otherwise secured rigidly
thereto. The guide 49 is formed of a pressed channel
section having an inner ?ange 50 vertically overlapping
a guide support 51 secured to the opposite edge of the
channel section and projecting upwardly into the channel
section, forming a portion of a side face for the guide.
A shoe is formed by a pair of blocks 5-2, in this form
of the invention, embracing opposite sides of one ?ange
the telescoping action of the cylinder. An elongated
packing nut 28 is provided for this purpose on section
38 of the cylinder 11 and is encircled and clamped by 50 of an angular carrier member 53. The blocks 52 are
secured in place on this member by bolts 54, or other
the collar 25—27. The length of the sleeve portion 25
suitable fastenings. The shoe 52 is guided in the channel
should be substantially the width of the support member
49 by a side of the channel in vertical alignment with
11.
v ‘The collar 25-—27, is mounted on a cylinder support
bracket 29 by lugs 31 on the collar section 27, and with
the bracket 29 extending in bridging relation between
the longitudinally slotted guide means 9 for movement
lengthwise of the compaction body with the compaction
head 7. The mounting is accomplished in a fashion
similar to that of the compaction head 7, by angle bars
33 fastened to the cylinder support bracket 29, the angle
bars 33 in turn, being connected to elongated shoe mem
bers 35, which longitudinal members 35 ?t in and move
longitudinally within the hollow tubes comprising the
guide means 9. The collar 25-27 is a?ixed to the
cylinder 11, intermediate the ends thereof, to ‘furnish a
movable support which provides maximum stability for
the hydraulic cylinder when in an extended position.
By reason of the cylinder support member 15, the un
the guide support 51, ‘and by the latter.
The carrier member 53 has a ?ange projecting down
wardly between the inner flange 50 and the guide sup
port 51, and is secured to the cylinder support member
15. The latter is attached to the cylinder 11 intermediate
its length, as described above.
In FIGS. 9 through 11, there is shown another form
of cylinder support designated 150. This support in
cludes a rigid, transversely extending portion 60 corre
sponding in function to the transverse member 29 in FIG.
2. However, it is preferred that the portion 60 be a rigid
rectangular structure in transverse cross section, as shown
in FIG. 11. It is made up of top and bottom plates 62
and 64 and of side plates 66 and 68 welded together
as shown.
The rigid transverse portion 60 extends all the way
across the body and is supported for longitudinally move
supported extended length of the cylinder is kept to a 70 ment along the body upon expansion of the cylinder 11.
The end portions of the support 15a may be mounted
mini-mum.
'
The invention is illustrated in connection with a trailer
type body although it is recognized that it may be ap
plied to any suitable type of vehicle. In this trailer
as suggested in FIG. 2 or as suggested in FIG. 8.
Near the middle of the support 15a, means are provided
for connecting the transverse member 60 to the cylinder
type body, the low-boy trailer has the chassis‘ thereof 75 11. On each side of the cylinder 11, there is an up
3,049,250
5
6
standing bearing bracket 70 resting upon the surface
of the transverse member 60 and being held in position
by suitable bolts 72. The bolts 72 pass through the mem
ber 60 and through angle members 74 welded to the lower
end portions of the brackets 70.
The upper end portion of each bearing bracket is
member extending in crossed relation with the hydraulic
cylinder and offset therefrom, means carried by the sup
port member ‘and extending laterally therefrom for secur
ing the support member to one of said telescoping sec—
tions intermediate the ends of said cylinder, said support
member being movable with said intermediate section
relative to the opposite end sections of the cylinder and
supporting the intermediate portion of the cylinder, said
support member having means at each end thereof for
engagement with said longitudinal guide means, and
means for supplying ?uid under pressure to said hy
formed with a U-shaped groove 76 for receiving a pintle
or trunnion 78 protruding laterally from a cylinder clamp
unit designated generally by the numeral 80. The pintle
78 normally are held in the grooves 76 by hearing caps
82 attached by machine screws 84 to the upper ends of
draulic cylinder whereby said compaction head, said tele
the bearing brackets 70.
The clamp unit 80 includes two substantially semi
scoping sections, and said support member are caused to
cylindrical members 86 of similar con?guration. Each
move lengthwise with respect to said compaction body.
is provided with an enlarged boss 88 projecting laterally 15
3. In a compaction body for a vehicle having a body
from its central portion and forming a base from which
portion adapted to receive refuse therein, the combination
one of the pintles 7 8 projects. Each pintle 78 is rigid with
with a compaction head extending transversely in the body
respect to one of the members 86 of the clamp unit 8%}.
for movement lengthwise thereof, of a hydraulic cylinder
The members 86 also carry brackets 90 adjacent their
connected with one end of the body and extending length
abutting edges to provide seats for bolts 92 which pull
wise of the body substantially to the compaction head and
the members 86 together in surrounding relation to the
connected therewith, said hydraulic cylinder having a plu
cylinder 11. It will be understood in this connection that
rality of telescoping sections, a support member extending
the clamp unit 86 moves longitudinally with an inter
transversely from side to side of the body in crossed rela
mediate portion of the ‘cylinder 11.
tion with the hydraulic cylinder and offset therefrom,
Since the pintles 78 are free to swing in the grooves 76
means mounting each opposite end portion of the support
of the bearing brackets 70, the clamp unit 80 may pivot
member upon the body for sustaining the weight thereon
relative to the rigid transverse support member 60. This
and in guiding relation therewith, and means extending
facilitates installation operations and also serves to mini
laterally from the support member and mounting one of
mize difficulties due to slight misalignment of the parts.
the intermediate sections of the cylinder upon said sup
It is apparent that the above disclosed structure pro
port member intermediate the ends thereof and with other
vides a compaction body having a compaction head ac
sections of the cylinder on opposite sides of the support
tuated by a multi-section hydraulic cylinder which is
free from the misalignment and mechanical support dis
advantages normally attendant in such devices. The
member for supporting the weight of the intermediate
portion of said cylinder against sagging during extended
cylinder is fully supported intermediate its length, when
in extended position, and by utilizing the trunnion hear
ing arrangement described, the extended length of the hy
gated body portion extending lengthwise of the vehicle
movement thereof.
4. In a compaction body for a vehicle having an elon
and adapted to receive refuse therein, the combination
with a compaction head extending transversely of the body
portion, and means mounting the compaction head for
movement forward and rearward of the body portion, of
draulic cylinder is kept to a
for any given
longitudinal excursion of the compaction head.
While the invention has been illustrated and described
in certain embodiments, it is recognized that other varia
tions and changes may be made therein, without departing
a hydraulic cylinder connected with the forward end of
the body and extending lengthwise of the body substan
from the invention as set forth in the claims.
We claim:
1. In a compaction body for a vehicle having a body
tially to the compaction head and connected therewith,
said hydraulic cylinder having a plurality of telescoping
sections, a support member extending transversely from
portion with upstanding side Walls and adapted to receive 45 side to side of the body in crossed relation with the hy
refuse therein, the combination with a compaction head
draulic cylinder and offset therefrom, means mounting
mounted in the body for movement lengthwise thereof, of
each opposite end portion of the support member upon
a substantially horizontal hydraulic cylinder connected
the body for sustaining the weight thereon and in guiding
to said compaction head, said cylinder having a plurality
relation therewith, and means extending laterally from
of telescoping sections, a support member extending in
the support member and mounting one of the intermedi
crossed relation with the hydraulic cylinder and oifset
ate sections of the cylinder upon said support member in
therefrom, means carried by the support member and
termediate the ends thereof and with other sections of the
extending laterally therefrom for securing the support
cylinder on opposite sides of the support member for sup
member to one of said telescoping sections intermediate
porting the weight of the intermediate portion of said
55
the ends of said cylinder, said support member being mov
cylinder against sagging during extended movement
able with said intermediate section relative to the op
thereof.
posite end sections of the cylinder and supporting the
5. In a compaction body for a vehicle having a body
intermediate portion of the cylinder, and longitudinal
portion adapted to receive refuse therein, the combination
guide means located on said side walls, said support mem
with a compaction head extending transversely in the body
ber having means at opposite ends thereof for engage 60 for movement lengthwise thereof, of a hydraulic cylinder
ment with said longitudinal guide means, and means for
connected with one end of the body and extending length
supplying ?uid under pressure to said hydraulic cylinder
wise of the body to the compaction head and connected
whereby said compaction head, said telescoping sections,
therewith, said hydraulic cylinder having a plurality of
and said support member are caused to move lengthwise
with respect to said compaction body.
2. In a compaction body for a vehicle having a body
portion with upstanding side walls and adapted to receive
refuse therein a compaction head mounted in the body for
lengthwise movement thereof and occupying substantially
65
telescoping sections, a support member extending trans
versely from side to side of the body beneath the hydrau
lic cylinder and spaced therefrom, a collar secured around
an intermediate section of said hydraulic cylinder, mem
bers extending upwardly from the support member and
the entire cross sectional area of said body, a substantially 70 securing the collar thereto for supporting the intermediate
portion of the hydraulic cylinder on the support member,
horizontal hydraulic cylinder connected to said compac—
and means mounting the opposite end portions of the sup
tion head, said cylinder having a plurality of telescoping
port member on the body in guiding relation therewith.
sections, longitudinal guide means located in said side
walls, means attached to said compaction head for en
6. In a compaction body for a vehicle having a body
gagement with said longitudinal guide means, a support 75 portion adapted to receive refuse therein, the combination
3,049,250
8
7
with a compaction head extending transversely in the body
for movement lengthwise thereof, of a hydraulic cylinder
connected with one end of the body and extending length
wise of the body to the compaction head and connected
therewith, said hydraulic cylinder having a plurality of
telescoping sections, a support member extending trans
versely from side to side of the body beneath the hy
draulic cylinder and spaced therefrom, a collar secured
around an intermediate section of said hydraulic cylinder,
from the support structure and being provided with verti
cally elongated openings therein, pintles carried by said
collar and being disposed in said openings to p'ivot'ally
connect the collar to said bearing members for supporting
the intermediate portion of the hydraulic cylinder on the
support structure, and means mounting‘ the opposite end
portions of the support structure on the body in guiding
relation therewith.
10. In a compaction body for a vehicle having a body
members extending upwardly from the support member 10 portion with upstanding side walls and adapted to receive
and securing the collar thereto for supporting the interme
diate portion of the' hydraulic cylinder on the support
member, said vehicle body portion having guides on oppo
refuse therein, the combination with a compaction head
mounted in the body for movement lengthwise thereof,
of a substantially horizontal hydraulic cylinder connected
to said compaction head, said cylinder having a plurality
site sides of the hydraulic cylinders, runners mounted in
the guides, and bracket members connecting the runners 15 of telescoping sections, a support member extending in
crossed relation with the hydraulic cylinder and offset
with the support member for guiding the movement of the
therefrom, means carried by the support member and ex
support member with the cylinder.
7. In a compaction body for a vehicle having a body
tending laterally therefrom for securing the support meni
ber to one of said telescoping sections intermediate the
with a compaction head mounted in the body for move 20 ends of said cylinder, said support member being movable
with said intermediate section relative to the opposite
ment lengthwise thereof, of power cylinder means con
end sections of the cylinder and supporting the intermedi
nected to said compaction head, said cylinder means hav
portion adapted to receive refuse therein, the combination
ate portion of the cylinder, and longitudinal guide means
for the support member whereby said compaction head,
able sections of said cylinder means and with sections of 25 said telescoping sections, and said support member are
ing a plurality of relatively movable sections, and sup
porting means pivotally connected with one of said mov
the cylinder means on opposite sides of said supporting
means.
-
8. In a compaction body for a vehicle having a body
caused to move lengthwise with respect to said compac
tion body.
11. In a compaction body for a vehicle having a body
portion adapted to receive refuse therein, the combination
tion with a compaction head mounted in the body for 30 with a compaction head extending transversely in the body
portion adapted to receive refuse therein, the combina
movement lengthwise thereof, of a substantially horizon
tal hydraulic cylinder unit connected to said compaction
head, said cylinder unit having a plurality of telescoping
for movement lengthwise thereof, of a longitudinally ex~
tending hydraulic cylinder connected to the body‘ and to
the compaction head, said hydraulic cylinder having a plu
rality of telescoping sections, a support structure extend
.of said telescoping sections intermediate the ends of said 35 ing transversely from side to side of the body beneath
the hydraulic cylinder and spaced therefrom, a collar se
cylinder and being longitudinally movable therewith to
cured around an intermediate telescoping section of said
support said one section against sagging.
sections, and support means pivotally connected to one
9. In a compaction body for a vehicle having a body
hydraulic cylinder, bearing means mounting said collar
portion adapted to receive refuse therein, the combina—
on the support structure, and means mounting the oppo—
site end portions of the support structure on the body in
tion with a compaction head extending transversely in the
body for movement lengthwise thereof, of a longitudi
guided relation therewith.
nally extending hydraulic cylinder connected to the body
and to the compaction head, said hydraulic cylinder hav
References Cited in the ?le of this patent
ing a plurality of telescoping sections, a support structure
extending transversely from side to side of the body be 45
UNITED STATES PATENTS
neath the hydraulic cylinder and spaced therefrom, a
2,408,284
Anthony _._._'- ______ __i__ Sept. 24,- 1946
collar secured around an intermediate section of said
2,530,350
Ehlert _>_ _______ "1 ____ __ Nov. 14, 1.950
hydraulic cylinder, bearing members extending upwardly
2,889,944
Clark et a1 _____________ __ June 9, 1959
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