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Патент USA US2119780

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June 7, 1938.
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H. 0. cuR'ns
AGGREGATE HANDLING APPARATUS
Filed Aplfil 17, 1937
242O3525
22/9212)":
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2,119,780
Patented June 7, 1938
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UNITED STATES PATENT OFFICE
1*
2,119,780
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AGGREGATE’ HANDLING APPARATUS
Henry 0. Curtis, Des Moines, Iowa
Application April 17,‘ 1937, Serial No. 137,480
6 Claims.
5
lo
15
20
25
(01. 214-110)
One object of my invention is to provide apparatus for handling aggregate such as sand,
gravel and the like for conveying such aggregate
to an aggregate mixer, such as a concrete mixer,
side members l5. The speci?ed‘ curvature of each.
end member‘ l4 enables closure of these. doors’
through the aggregate‘ after the container C'is
propelled into the pile of aggregate with the door
the apparatus being‘comparatively simple and
open.
.
\
_
5
durable as well as inexpensive from a manufac-
For propelling the aggregate container or car
turing standpoint.
A further object is to provide an‘ aggregate
handling apparatus including a wheeled container and doors pivoted to the open ends thereof, which are so movable through the aggregate
as to facilitate their closure after the aggregate
container has been ?lled.
Still a further object is to provide a wheeled
aggregate carrier having'a reversible bail pivoted
thereto for propelling it by means of Winch and
cable mechanism.
Another object is to DI‘OVidBdOOI‘S for the aggl'egate Carrier Which are Opened and 0105911 by
the reversible bail during its OperationStill another object is to provide an inclined
track for the aggregate Carrier S0 associated With
a concrete mixer that the carrier can be propelled
up the track and to a position for discharging its
contents into the concrete mixer.
With these and other objects in View, my in-
rier C I provide a bail iii, a winch I‘! (see Figure
3) and cables I B. The bail I8 is pivoted to the
vention consists in the construction, arrangement
and combination of the various parts of my aggregate handling apparatus, whereby the objects
30 contemplated are attained, as hereinafter more
fully set forth, pointed out in my claims, and
illustrated in the accompanying ‘drawing, in
which:
‘
Figure 1 is a side elevation partly in section
35 showing an aggregate carrier forming a part of
my aggregate handling apparatus.
Figure 2 is a plan View ofv the carrier. _
Figure 3 is a diagrammatical side elevation of
the carrier and the remaining part of the appa40 ratus for conveying aggregate to a concrete
mixer; and
Figure 4 is a side elevation of a modi?ed form of
carrier.
On the accompanying drawing I have used the
45 reference character C to indicate a container for
aggregate. The container C has a pair of side
walls l0 and a bottom II, the ends of the con-
tainer being open. Wheels l2 are provided for
supporting the container'C so that it can be read50 ily propelled from one position to another.
The open ends of the carrier C are closed by
doorsD and D’ pivoted to the upper corners of the
carrier as at l3.
Each of the doors D and D’
comprises an arcuate end member l4 curved on
55 a radius from the pivotal axis l3, and a pair of
carrier C as at H! so- it can be reversed as illus
trated by solid and dotted lines in Figure 1.
10
When the bail I6 is in the solid line position,
the aggregate carrier is‘ propelled in 'a left hand
direction into the pile of aggregate. It will be
noted that the door D is opened; such opening
being automatically e?ected by a jackknife tog- 15
gle arrangement including a pivoted lever 20; a.
door lever 22 and link connections 23 and 24. They
link connection 23 extends from the bail iii to
the lever 20', while the link connection 24' ex
tends from the lever 20 to the lever 22.
'. 20‘
When the bail I5 is reversed,.the jackknife tog
gle arrangement will straighten out to the dotted
position for closing the door’ M and thereby. re
taining the aggregate in the container 0 when
the container is propelled in a right hand direc- 25
tion.
A ?exible connection 25 is provided between
the lever l6’ and the door D’ for closing-this door
whenever the carrier, is propelled in a left hand
direction and for permitting it to openiwhenit’mr
is propelled in a right hand direction.
The door D’ is normally retained closed by. a
latch 26 engaging a cross rod. 27 on the door.
A
leaf spring. 28 serves to normally retain the latch
in the latching position. The latch is provided 3,5‘
with an extension 29' adapted, as willhereinafter
appear, to be engaged during the operation of. the
aggregate carrier for unlatching the door auto
matically.
In Figure 3 further elements of the apparatus 40
are illustrated. An inclined track 30 is provided
which may be mounted on a truckv T. The trackv
30‘ is made of a pair of channel irons spaced lat
erally and adaptable for receiving the wheels I2,
and thereby. guiding the carrier to. a position 45
Where it can discharge into the. chute. 3| ofv a
concrete'mixer 32.
The latch extension.2v9.~ is. adapted to engage
a Stationary projection 33' f0!‘ thus releasing ‘the
door D’ after which a stationary extension 34 en- 50
gages a lever 35 of the door D’ for opening the
door so the contents of the container C maybe
discharged into the concrete mixer 32.
'
The winch and cable mechanism includes idler
pulleys 36, a dead man pulley 36" and a boom 31 55
2
2, 1 19,780
carrying an idler pulley 38. The boom 31 is piv
tainer for reversal relative thereto for pulling said
oted to the truck T and may move between stops
39 during operation.
In Figure 4 I illustrate a modi?ed form of con
struction in which a container C’ is provided
with an open end 40 which is constricted by in
clining the forward ends of the sides of the con
tainer toward each other. In this way the dis
charge end of the container C’ may enter the in
10 take opening 4| of a concrete mixer32' for dis
charging the contents thereinto without spilling
them.
This carrier is illustrated as having a.
manually operable door D" provided with a han
dle lever 35’ and a latch 42 is illustrated for
15 latching the doorlD" in closed position.
Aside from these features, the carrier C’ is sim
ilar in construction to the carrier C, but does
not have all of its automatic advantages.
Practical operation
20
In the operation of my device, referring to
Figure 3, the carrier C is being moved in a left
hand direction and pulled into a pile of aggre
gate 43. The door D is open, as shown by solid
lines in Figure 1, so the aggregate can enter the
container C, but will be retained against falling
out of the forward end thereof by the door D’
latched in closed position by the latch 26.
When the container has been ?lled, the winch
I1 is reversed for swinging the bail I6 of the car
rier from the full line position to the dotted posi
tion, which ?rst closes the door D and then pro
pels the carrier up the inclined track 30, as shown
by dotted lines. Finally as shown by dash lines,
=' the carrier travels down the inclined portion 30’
of the track 30, the latch 26 being unlatched ad
jacent the end of its downward travel and there
after the extension 34 engaging the handle lever
35 and thereby opening the door D’. This per
40 mits the contents of the aggregate carrier to be
discharged into the chute 3| from which the ag
gregate slides into the mixer 32.
.
'
Just before reaching the height of its travel
on the inclined track 30, the bail l6 will engage
the pulley 38 of the boom 31 and swing the boom
forwardly to the dash line position, thereby rais
ing the forward end of the bail to an out-of-the
way position where it does not interfere with the
concrete mixer 32.
This position is illustrated
Figure 4.
v50 . in After
the contents of the carrier have been dis
charged, the winch I'! is again reversed for re
versing the bail l6 and propelling the aggregate
carrier C back for another load of aggregate.
With the construction shown in Figure 4, it is
55
not necessary to release and open a door at the
right hand end of the carrier.
A modi?cation of the character shown in Fig
ure 4, when compared with the construction
60 shown in Figure 1, and many others may be made
without departing from the real spirit and pur
pose of my invention, and it is my intention to
cover by my claims any modi?ed forms of struc
ture or use of mechanical equivalents which may
65 be reasonably included within their scope.
I claim as my invention:
1. In an aggregate handling apparatus, a
wheeled container having open ends, doors for
said ends, a bail pivotally connected to said con
container in either direction, and an operative
connection between said bail and said doors to
close one door when the bail extends in one di
rection and to close the other door when the bail
extends in the other direction.
2. In an aggregate handling apparatus, a
wheeled container having open ends, doors for
said ends, said doors being pivoted to said con
tainer and being formed on radii from the pivot 10
axes, a bail pivotally connected to said container
for reversal relative thereto for pulling said con
tainer in either direction, and an operative con
nection between said bail and said doors to close
one door when the bail extends in one direction
and to close the other door when the bail extends
in the other direction.
3. In an aggregate handling apparatus, a
wheeled container having open ends, a door for
one of said ends, a bail pivotally connected to the
lower part of said container adjacent the cen
ter thereof and reversible by swinging fore and
aft across thetop thereof for pulling said con
tainer in either direction, and an operative con
nection between said bail and said door to close
the door when the bail extends in one direction
from its pivotal connection.
4. In an aggregate handling
apparatus, a
wheeled container having open ends, a door for
one of said ends, a bail pivotally connected to said 30
container and reversible by swinging fore and aft
across the top thereto for pulling said container
in either direction, and a toggle lever connection
between said bail and said door to close the door
when the bail extends in one direction from its .
pivotal connection and to open the door when the
bail extends in the other direction therefrom.
5. In an aggregate handling apparatus, a
wheeled container having open ends, a door for
one of said ends, a track for said container ter
minating adjacent the intake of an aggregate
mixer and winch and cable mechanism for alter
nately propelling said container into a pile of
aggregate and along said track to discharge its
contents into said mixer, said container having
a bail connected to the lower center portion there—
of with its outer end connected with said winch
and cable mechanism, such bail connection being
swingable across the top of said container and
thereby reversible for pulling the container in
50
either direction.
6. In an aggregate handing apparatus, a
wheeled container having open ends, a door for
one of said ends, a track for said container ter
minating adjacent the intake of an aggregate
mixer and winch and cable mechanism for alter
nately propelling said container into a pile of ag
gregate and along said track to discharge its con
tents into said mixer, said container having a bail
connected with said winch and cable mecha
nism, such bail connection being reversible for
pulling the container in either direction, and a
boom pivoted adjacent said aggregate mixer and
adapted to be engaged by said bail and raise it to
a position where it does not interfere with the
mixer as the container assumes a position there
adjacent for discharging its contents.
HENRY O. CURTIS.
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