IMPROVEMENTS IN CONCRETE MIXING MACHINES
Year: 1885

page_text: I HARRY STOCKMAN of N° 2 Queen's Villas Hampton in the County of
Middlesex-Civil Engineer-do hereby declare the nature of my invention for
IMPROVEMENTS IN CONCRETE MIXING MACHINES to be as follows:-
The machine the subject of my invention is for the purpose of mixing or incor-
porating ingredients used in the preparation of concrete and consists of a case
containing cones and funnels placed vertically over each other in the following
manner:-
I place centrally (one over the other) in the case a series of cones with their
apices upwards; the bases of these cones being of less diameter than the inside of
the case to allow sufficient space for the ingredients to pass freely-Between each
pair of cones is a funnel, whose upper or larger diameter is the same as that of
the case.
The top of the case may be enlarged to form a hopper for receiving the
ingredients to be mixed, or a separate hopper may be attached for the purpose.
The ingredients to be mixed are placed into the hopper; and they then descend
by gravitation to the apex of the top cone, then spreading and falling into the
first funnel, thence on to the second cone and so on.
For the purpose of wetting the ingredients I provide inlets to the case, through
which I inject water at such points as are found to be most suitable.
"f
Sometimes I commence the mixing process by using a portion of the ingredients
(for example the cement or lime) in a fluid state such as is known by the term
'grout," and to effect this I employ a hopper with a valve or flap at its outlet, so
as to retain-when closed-the said "grout" and the other ingredients until.
a sufficient quantity is ready to be admitted to the cones and funnels below-
with this "grout
process the wetting the ingredients while passing through the
case would not be necessary.
"
The form of the case may be cylindrical with cones and funnels as described, or
it may be square or polygonal with pyramids instead of cones.
The whole may be mounted on wheels, it may be slung or suspended or fixed
rigidly.
"

page_text: Improvements in Concrete Mixing Machines.
I, HARRY STOCKMAN of No 2 Queen's Villas Hampton in the County of
Middlesex C.E. do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement reference being had to the accompanying drawing forming
a part of this specification:-
My invention relates to machinery for mixing or incorporating ingredients used
in the preparation of concrete.
In the accompanying drawing I have illustrated one form of machine as con-
structed in accordance with this invention Figure 1 being an elevation of the said
machine and Figure 2 a horizontal section of the same on the line xx Figure 1.
In carrying the said invention into practice as illustrated in the drawing
I employ a case a containing a series of pyramids 6 and funnels c arranged
vertically over each other as follows that is to say:-I place centrally (one over
the other) in the case a the series of pyramids b with their apices extending
upwards the bases of these pyramids being of less area than the inside of the case a
so as to allow sufficient space for the ingredients to pass freely between the outer
edges of such pyramids and the interior of the surrounding case. Between each
pair of pyramids I arrange one of the funnels c as shewn the upper or larger area
of such funnels being the same as that of the case. The top of the case a may be
enlarged as shewn at d to form a hopper for receiving the ingredients to be mixed
or a separate hopper may be attached for the purpose. In order (when it is
required) to wet the ingredients during their descent through the case a I provide
inlets or pipes as at e for instance through which I inject water. Any desired
number of such inlets may be arranged at such points as are found to be most
suitable. ff represent doors arranged at the sides of the case to permit access to
the interior of the mixer for cleaning or other purposes.
In using the said machine the ingredients to be mixed are placed in the hopper
as at d and they then descend by gravitation to the apex of the uppermost pyramid
then spreading and falling into the first funnel thence on to the second pyramid
and so on.
Sometimes I commence the mixing process by using a portion of the ingredients
(for example the cement or lime) in a fluid state that is to say as a material which
is known by the term "grout." To effect this I employ one or more hoppers
having a valve or flap at their outlet so as to retain, when closed, the said grout
and the other ingredients until a sufficient quantity is ready to be admitted to the
case a to be subjected to the action of the pyramids and funnels below. By this
'grout" process the wetting of the ingredients while passing through the case is
rendered unnecessary.
66
The form of the case a may be either square as shown or polygonal or may be
cylindrical with cones between the funnels instead of pyramids as above described.
The machine may be mounted on wheels or may be suspended or rigidly fixed.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
.
First. A machine for mixing concrete consisting of a case a containing a series
of funnels c and cones or pyramids b substantially as herein set forth.
Second. The combination with the case a containing the funnels c and cones
or pyramids b of inlets for the admission of water substantially as and for the
purpose specified.