U.S. patent number 3,617,031 [Application Number 05/053,943] was granted by the patent office on 1971-11-02 for concrete batchor plant and double-end loading transit mixer.
Invention is credited to Hugh P. Paris.
United States Patent |
3,617,031 |
Paris |
November 2, 1971 |
CONCRETE BATCHOR PLANT AND DOUBLE-END LOADING TRANSIT MIXER
Abstract
A concrete batchor plant and double-end loading transit mixer
wherein a pair of containers for concrete components are supported
in spaced longitudinal relation with respect to one another so that
a transit mixer may be driven into a loading position beneath the
containers. A plurality of hoppers are provided for separate
storage of gravel, sand and cement, and weighted amounts of these
components are delivered to the containers. Moreover, a transit
mixer has a rotatable drum with chutes disposed at its front and
rear ends for conveying charges of the gravel, sand and cement to
the interior of the drum, whereby the charges may be delivered
simultaneously into both ends of the drum.
Inventors: |
Paris; Hugh P. (Palo Alto,
CA) |
Family
ID: |
21987621 |
Appl.
No.: |
05/053,943 |
Filed: |
July 10, 1970 |
Current U.S.
Class: |
366/18;
366/41 |
Current CPC
Class: |
B28C
7/0481 (20130101) |
Current International
Class: |
B28C
7/04 (20060101); B28C 7/00 (20060101); B28c
007/04 () |
Field of
Search: |
;259/175,176,177,171,161,162,154,148,149,153,164,165,166,169,170,173 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Jenkins; Robert W.
Claims
I claim:
1. In a concrete batcher plant and double-end loading transit
mixer, the combination of:
a. a concrete batcher plant comprising:
1. a pair of containers for concrete components supported in
longitudinal spaced relation with respect to one another, and
arranged at an elevation above a roadway so that a transit mixer
may be driven into a loading position beneath the containers;
2. a plurality of hoppers disposed above each of the containers for
separate storage of gravel, sand and cement;
3. each container being provided with separate compartments therein
for receiving charges of gravel, sand and cement, with these
charges partitioned from one another;
4. an outlet conduit leading from each hopper to one of the
compartments in a container, and a scale arranged in each conduit,
whereby a measured amount of the concrete components according to
weight may be delivered to the compartments;
5. each container having a concrete component-receiving chamber in
its lower portion that communicates with all of the compartments of
that container, and each container further having gates that may be
opened for discharge of the gravel, sand and cement from the
container chamber; and
b. a double-end loading transit mixer comprising:
1. a vehicle having a rotatable drum mounted thereon, the drum
being provided at its front and rear ends with chutes for conveying
charges of the gravel, sand and cement to the interior of the
drum;
2. the front chute being located to register with the gates of one
of the containers, while the rear chute registers with gates of the
other container, whereby charges of the gravel, sand and cement may
be delivered simultaneously into both ends of the drum.
2. The concrete batcher plant and double-end loading transit mixer
combination, as set forth in claim 1; and
c. in which a water tank is associated with each of the containers,
and each tank is provided with a controlled water-outlet conduit
leading to one of the chutes of the transit mixer, whereby a
measured amount of water may be mixed with the charges of gravel,
sand and cement entering the drum.
3. In a concrete batcher plant:
1. a pair of containers for concrete components supported in
longitudinal spaced relation with respect to one another, and
arranged at an elevation above a roadway so that a transit mixer
may be driven into a loading position beneath the containers;
2. a plurality of hoppers disposed above each of the containers for
separate storage of gravel, sand and cement;
3. each container being provided with separate compartments therein
for receiving charges of gravel, sand and cement, with these
charges partitioned from one another;
4. an outlet conduit leading from each hopper to one of the
compartments in a container, and a scale arranged in each conduit,
whereby a measured amount of the concrete components according to
weight may be delivered to the compartments;
5. each container having a concrete component-receiving chamber in
its lower portion that communicates with all of the compartments of
that container and each container further having gates that may be
opened for discharge of the gravel, sand and cement from the
container chamber.
4. The concrete batchor plant, as set forth in claim 3; and
6. in which a water tank is associated with each of the containers,
and each tank is provided with a controlled water-outlet conduit
arranged to deliver a measured amount of water to the charges of
gravel, sand and cement discharged through the gates of the
containers.
5. In a double-end loading transit mixer:
1. a vehicle having a rotatable drum mounted thereon;
2. the drum being provided at its front and rear ends with chutes
for conveying charges of gravel, sand and cement into both ends of
the drum simultaneously;
3. the drum normally being disposed horizontally and pivotally
supported near its rear end on the vehicle, and means provided for
raising the front end of the drum, whereby the mixed concrete
components may be discharged from the drum through an outlet
opening in the latter; and
4. the front chute is swingably supported for movement into an
out-of-the-way position so as to clear the drum prior to be front
end of the drum being raised.
Description
SUMMARY
It is well known that transit mixers wherein the rotating mixing
drum is arranged on a slope will cause separation of the concrete
components, the cement being the heavier material naturally goes to
the bottom, thereby producing nonuniform mixes of the gravel, sand
and cement.
Accordingly, it is proposed to provide a rotatable mixing drum on a
vehicle that is arranged horizontally, and charges of gravel, sand
and cement are delivered into the front and rear ends of the drum
simultaneously. Thus, larger quantities of the concrete components
may be hauled in the transit mixer, and these will not separate
from one another during mixing.
Moreover, it is proposed to provide a concrete batcher plant having
a pair of containers for receiving concrete components, these
containers being supported in longitudinal spaced relation with
respect to one another and arranged at an elevation above a roadway
so that the transit mixer may be driven into load position beneath
these containers. A plurality of hoppers are disposed above each
container for separate storage of gravel, sand and cement, and
measured amounts of these components are delivered according to
weights to the containers. The containers are provided with gates
that may be opened, whereby the charges of the gravel, sand and
cement may be delivered into opposite ends of the transit mixer
drum simultaneously.
Other objects and advantages will appear as the specification
proceeds, and the novel features of the invention will be pointed
out in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, reference should be
made to the accompanying drawings, forming part of this
specification, in which:
FIG. 1 is an elevational view of my concrete batcher plant and
double-end loading transit mixer, portions of the batcher plant
being broken away and part being shown in section;
FIG. 2 is an elevational view of the batcher plant by itself;
and
FIG. 3 is a diagrammatic flow sheet for the gravel, sand and
cement.
While I have shown only the preferred embodiment of my invention,
it should be understood that various changes, or modifications may
be made within the scope of the appended claims without departing
from the spirit thereof .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings in detail, it will be noted that I
provide a concrete batcher plant designated generally at A and a
double-end loading transit mixer B.
The batcher plant A has a suitable supporting frame structure C in
which a pair of containers D are mounted in longitudinal spaced
relation with respect to one another. These containers are arranged
at an elevation above a roadway E so that the transit mixer B may
be driven into a loading position beneath the containers, as
disclosed in FIG. 1.
Gravel, sand and cement hoppers F, G and H, respectively, are
disposed above each of the containers D for the separate storage of
these concrete components. It will be seen from FIG. 3 that three
of the gravel hoppers F and three of the sand hoppers G are
provided above each of the containers D so that gravel and sand of
various sizes or meshes may be fed to the containers.
As shown in FIGS. 1 and 3, each container D is provided with
separate compartments F', G' and H' for receiving charges of gravel
10, sand 11 and cement 12, respectively, from the hoppers F, G and
H, respectively, with these charges partitioned from one
another.
Each gravel hopper F is provided with an outlet conduit 10' that
leads to the gravel-receiving compartment F' of one of the
containers D, and this conduit has a conventional scale 13, whereby
a measured amount of gravel according to weight may be delivered to
each compartment F'. As shown in FIGS. 1 and 2, a control panel J
has an automatic dial-set gravel scale 16 and three pushbuttons 19
for controlling the flow of gravel 10 from the gravel hoppers F
through the outlet conduits 10'.
Likewise, each sand hopper G has an outlet conduit 11' that leads
to the sand-receiving compartment G' of one of the containers D,
and each conduit 11' has a conventional scale 14 so that a weighted
amount of sand may be delivered to each compartment G'. FIGS. 1 and
3 disclose an automatic dial-set sand scale 17 and three
pushbuttons 20 for controlling the flow of sand 11 from the sand
hoppers G through the outlet conduit 11'.
Moreover, the cement hopper H has branch outlet conduits 12' and a
screw conveyor 22 that leads to the cement-receiving compartment H'
of one of the containers D, and these conduits have conventional
scales 15, whereby measured amount of cement according to weight
may be delivered to each compartment H'. The control panel J in
FIGS. 1 and 2 disclose an automatic dial-set cement scale 18 and a
pushbutton 21 for controlling flow of the cement 12 through the
outlet conduits 12'.
As shown in FIGS. 1 and 2, each container D has a concrete
component-receiving chamber K in its lower portion that
communicates with all of the compartments F', G' and H' of that
container, and each container D further has gates 23 which may be
opened for discharge of the gravel 10, sand 11 and cement 12 from
the container chamber K.
As shown in FIG. 1, the cement 12 flows as a core in the descending
stream of the gravel, sand and cement as they move through the
gates 23, the cement being enveloped by the gravel 10 and the sand
11. This will prevent the cement from blowing into the atmosphere
when the gates are opened. The control panel J has pushbuttons 24
for opening the gates.
It will be apparent from FIGS. 1 and 2 that a water tank 25 is
associated with each of the containers D, and each tank is provided
with a controlled water-outlet conduit 26, whereby a measured
amount of water may be mixed with the charges of gravel, sand and
cement being discharged by the batcher plant. The control panel J
has pushbuttons 27 for releasing the water, and a water meter 28 is
provided near the control panel. Additives for mixing with the
water flowing from the tanks 25 may be placed vessels 29, and
outflow of these additives regulated by push button 30 on the
control panel J. Such additives are conventionally added to
concrete to quick drying thereof.
Turning now to the double-end loading transit mixer B, FIG. 1
illustrates a vehicle L having a rotatable drum 31 mounted thereon.
This vehicle has been shown as a semitrailer. but a truck could be
used. This drum is provided at its front and rear ends with chutes
32 and 33, respectively, for conveying charges of the gravel, sand
and cement to the interior of the drum. The front chute 32 is
located to register with the gates 23 of one of the containers D,
while the rear chute 33 registers with the gates 23 of the other
container D, whereby the charges may be delivered simultaneously
into both ends of the drum. The drum 31 is normally disposed
horizontally, and thus larger charges of the concrete components
may be placed in the drum and the components will not separate from
one another as the drum is turned.
The drum 31 is pivotally supported near its rear end on the vehicle
L by means of a journal shaft 34, and a hydraulic jack 35, or the
like, is provided for raising the front end of the drum, whereby
the mixed concrete components may be discharged from the drum
through an outlet opening 36 in the latter. A powered belt conveyor
37 is provided to receive the mixed concrete components from the
drum. This conveyor may be operated by an air motor 38 that
receives air from an air compressor 39 and an air tank 40, the flow
of air to the motor being controlled by pushbutton panel 41.
The front chute 32 is swingably supported on a journal pin 42 for
movement into an out-of-the-way position so as to clear the drum 31
prior to the front end of the drum being raised, as indicated by
dot-dash lines of the drum in FIG. 1. The front chute may be swung
on the journal pin 42 by a hydraulic jack 43, or the like.
For the purpose of rotating the drum 31, an engine 44 has been
disclosed on the vehicle L, and this engine is connected through a
reduction unit 45 and drive shaft 46 to a sprocket 47 on a drive
chain 48 that encircles the drum 31, or the drum may be turned by
other suitable means. A water supply tank 49 has been shown as
being carried by the vehicle L.
The rear chute 33 may be swingably supported on a journal pin 50 so
that this chute may swing as the front end of the drum 31 is raised
and the rear end of the drum moves slightly to the rear.
Pushbutton panel 51 controls flow of air to and from the jack 43,
or the like, and outflow of water from tank 49.
* * * * *