Improvements in Apparatus for Measuring and Mixing Sand, Cement, and other Similar Substances.
Year: 1897

page_text: Date of Application, 1st June, 1897
Complete Specification Left, 21st Sept., 1897-Accepted, 30th Oct., 1897
Improvements in Apparatus for Measuring and Mixing Sand, Cement,
and other Similar Substances.
I, HERBERT ALEXANDER, of Water Lane, Leeds, in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
-
This invention refers to apparatus whereby sand, cement, and other similar
substances, may be measured and mixed prior to their being fed to a press for
forming bricks, tiles and like articles; and my object is to construct and arrange
such machinery, in such a manner that sand, cement, and other material may be
measured in accurate proportions and then mixed and fed to a press,
According to my invention, I employ a drum having two, three, or more sets
of recesses arranged in circles in the periphery of same, and the bases of the recesses
are made adjustable so as to enable the capacity of the said recesses to be adjusted
as required. Above the drum a compound hopper is provided, having compart-
ments in same of equal number to that of the sets of recesses in the drum, and
the base of the hopper is in contact with the upper surface of the drum, the outlet.
of each compartment being over a separate set of recesses in the drum. Below the
drum a trough is situated, and the centre of the trough is provided with a shaft
carrying a number of blades which are adjustable as to pitch. Below the trough
and at the outlet end of same, a mixer is provided having two worms or blade
shafts running parallel in same, and the said worms are driven in opposite directions
to each other and at different speeds, in such a manner that the material is worked
between the two sets of blades as it is fed along the mixer. The materials may be
either fed to the compound hopper by hand, or it may be carried up and delivered
to same by means of elevators, and a spray may be provided over the mixer for
adding moisture to the material whilst it is being worked.
In measuring and mixing the materials in the apparatus above described, the
sand, cement, or other materials to be mixed, are fed to the compound hopper where
they are distributed to the various sets of recesses in the drum, and the bases of the
recesses having been set to the required depths according to the proportions
required, the material is measured and fed to the trough in accurate and known
quantities. The material is now mixed together in its dry state by means of the
blades in the trough, and the mixed material is then delivered to the mixer, where
it receives a suitable quantity of moisture and is worked together in a plastic
form between the two worms until it arrives at the outlet of the mixer, when it
is in a suitable state for being utilized in the press.
If desired, the supply of moisture may be dispensed with, in which case the
material leaves the machine in a dry state.
Dated this lot dow of Tu 1907

page_text: Improvements in Apparatus for Measuring and Mixing Sand, Cement
and other Similar Substances.
I, HERBERT ALEXANDER, of Water Lane, Leeds, in the County of York, Engineer,
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:-
This invention refers to apparatus whereby sand, cement, and other similar
substances, may be measured and mixed prior to their being fed to a press for
forming bricks, tiles and like articles; and my object is to construct and arrange
such machinery, in such a manner that sand, cement, and other material may be
measured in accurate proportions and then mixed and fed to a press, all in one
and the same machine.
In order that my invention may be clearly understood, I will proceed to describe
same with reference to the accompanying drawings in which similar letters refer
to like parts in both figures.
Figure 1 is a longitudinal section, and Figure 2 is a transverse section of an
apparatus constructed according to my invention.
A is a rotating drum having three sets of recesses B, C and D in same, which
are arranged in circles on the face of the drum A. E, F and G are adjustable
displacing blocks which are situated in the recesses B, C and D and which are held
in position by means of the bolts E, F, and G¹ which may be adjusted through the
ends of the drum A. Above the drum A a compound hopper is provided, having
three compartments H, J and K in same, the bases of which are situated over the
three sets of recesses B, C and D in the drum A. L is a trough having a rotary
shaft M in same, and the latter caries blades N which are adjustable in pitch.
P is a mixer which is provided with two worms or blade shafts R and S, and the
blades R on the shaft R are rotated at half the speed of the blades S¹ on the shaft S,
the two shafts R and S being set in such a position that the blades of one shaft
do not come in contact with the blades of the other shaft. The materials may be
either fed to the compound hopper by hand, or it may be carried up and delivered
to same by means of elevators, and a spray may be provided over the mixing
trough P for adding moisture to the material whilst it is being, worked.
In measuring and mixing the materials in the apparatus above described, the
sand, cement, or other materials to be mixed, are fed to the compartments H, J,
and K, from whence they are fed to the three sets of compartments B, C and D.
The compartments B, C and D are regulated in size by means of the adjustable
displacing blocks E, F and G which are fastened in the required positions in
the recesses B, C and D by means of the bolts E', F and G¹, thus allowing the sand,
cement and other material to be fed to the trough L in accurate and known
quantities. The material is now mixed together by means of the blades N in the
trough L, and the mixed material is then delivered to the mixer P, where it is
worked together between the opposite rotating blades R and S₁ in the mixer P,
along which it passes to the outlet where it leaves the machine in a suitable state
for being útilized in the press.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
** 77
1. In machines for measuring and mixing sand, cement and other similar
substances, a compound hopper having separate divisions in same, in combination

page_text: with a compound drum having separate sets of compartments of adjustable size,
substantially as and for the purposes set forth.
2. In machines for measuring and mixing sand, cement and other similar
substances, the drum A having recesses B, C and D) in same, and adjustable
displacing blocks E, F and G, in combination with one or more mixing troughs,
substantially as and for the purposes set forth.
3. In machines for measuring and mixing sand, cement and other similar
substances, the drum A having recesses B, C and D therein, adjustable displacing
blocks E, F and G, the hopper having compartments H, J and K, trough L,
shaft M, blades N, mixer P, blade shafts R and S, and blades R¹ and S', all
working substantially as and for the purposes set forth.
Dated this 21st day of September A.D. 1897.
BREWER & SON,
London and Leeds, Agents for the Applicant.