IMPROVEMENTS IN APPARATUS FOR MIXING THE MATERIALS USED IN THE MAKING OF CONCRETE
Year: 1882

page_text: LETTERS PATENT to John Jackson, of Kensington, in the County of
Middlesex, for an Invention of "IMPROVEMENTS IN APPARATUS FOR MIXING
THE MATERIALS USED IN THE MAKING OF CONCRETE."
PROVISIONAL SPECIFICATION left by the said John Jackson at the Office
of the Commissioners of Patents on the 12th January 1882.
JOHN JACKSON of Kensington in the County of Middlesex.
IN APPARATUS FOR MIXING THE MATERIALS USED IN THE
CONCRETE."
-
."
IMPROVEMENTS
MAKING OF
My Invention relates to new or improved apparatus for mixing the materials
used in the making of concrete and has for its object to effect the said mixing with
facility without engine or similar motive power and with much less expenditure of
manual labor than has hitherto been necessary.
The apparatus constructed according to my Invention consists of a main trunk
or shoot supported in a vertical or approximately vertical position open at its top
where it is provided with a hopper and also open at its bottom the said bottom
preferably tapering or inclining inwards towards the opening.
The main trunk or shoot has in its interior shelves which incline downwards and
project alternately from opposite sides of the interior of the said trunk or shoot
and are so situated relatively the one with the other that when the materials tobe
mixed are thrown into the hopper they fall down the first inclined shelf and there-
from onto the next inclined shelf and so on from shelf to shelf until they pass from
the open bottom of the said main trunk or shoot into a truck or receptacle placed
to receive them the material being thoroughly mixed together in their passage
from shelf to shelf as aforesaid.
Where the materials are to be mixed with water as they pass down through the
apparatus this may be effected by water pipes so led into the interior of the main
trunk or shoot and so perforated that on water being forced into the said pipes it
issues from the perforations thereof meeting the materials preferably in their descent
from one shelf to another.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Jackson in the Great Seal Patent Office on the 12th July
1882.
JOHN JACKSON of Kensington in the County of Middlesex.. " IMPROVEMENTS
APPARATUS FOR MIXING THE MATERIALS USED IN THE MAKING
CONCRETE."
IN
OF
My said Invention relates to improvements in apparatus for mixing the materials
used in the making of concrete and has for its object to effect the said mixing with
facility withont engine or similar motive power and with much less expenditure of
manual labor than has hitherto been necessary.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several Figures on the annexed Sheet of Drawings the same letters of reference
indicating corresponding parts in all the Figures.
Figure 1 of the accompanying Drawing represents an elevation & partial
. vertical section of a concrete mixing, machine or apparatus constructed and
operating according to my said Invention and Figure 2 is a diagram illustrating a
convenient application of such apparatus for constructing sea dockwalls or other
similar structures.
The said apparatus consists of a main trunk or shoot A supported in a vertical or
approximately vertical position provided with a hopper B at its top and also open
at the bottom a the said bottom preferably tapering or inclining inwards towards
the opening as represented in the Drawings.
The main trunk or shoot A bas in its interior shelves or projecting pieces 6 which
incline downwards and project alternately from opposite sides of the interior of the
said trunk or shoot and are so situated relatively the one with the other that when
the materials to be mixed are thrown into the hopper B they fall down upon the
first inclined shelf and therefrom into the next and so on from shelf to shelf until
they pass from the open bottom a of the said main trunk or shoot into a truck or
receptacle C placed to receive them the materials having being thoroughly mixed
together in their passage from shelf to shelf as aforesaid.
In cases where the materials are required to be mixed with water as they pass
down through the apparatus above described water pipes D may be lead into the
interior of the main trunk or shoot A so that on water being forced into the said
pipes it is caused to issue from suitable apertures or perforations so as to meet the
materials preferably in their descent from one shelf to another.
A convenient form that the perforated pipes D may take is shewn at Figure 1ª
which represents a transverse section through the trunk or shoot A on line X X
Figure 1 according to this arrangement the water supply pipes D pass through the
sides of the trunk or shoot A into the interior thereof and are connected to or
terminate with T or other similar branches d at right angles thereto. These branch
pieces d are suitably perforated so that the water forced into them is uniformly
ejected or dispensed across the area of the trunk or shoot A so as to thoroughly
mingle with or permeate the falling particles of the materials to be mixed.
It will however be obviously understood that the nature of the water supply
might be varied according to convenience or requirements.
The concrete mixing apparatus herein before described may be carried by any
suitable fixed or moveable framing F which may be varied according to its appli-
cation or work to be performed while a platform f with convenient means of access
may be provided round the hopper B for the purpose of feeding the apparatus with
the materials to be mixed therein.
At Figure 2 of the Drawings is shewn a diagram illustrating a convenient
arrangement of the above described apparatus suitable for constructing concrete sea
or dock walls or other similar structures similar letters of reference marked thereon
indicating corresponding parts to those already described with reference to Figures 1
and 1 of the Drawings.

page_text: For this purpose the mixing apparatus may be carried by a truck or carriage E
mounted on rails e extended across in a horizontal plane to uprights or supports F.
The beams or girders G carrying the said rails e may be conviently pivotted at
their ends q so that they may be raised into the position indicated by the dotted
lines at H. At the top of the uprights or frames F is carried another similar plat-
form I which may be fixed or moveable according to requirements while the whole
apparatus and structure may be conveniently provided, with wheels J mounted on
rails j in order to facilitate transport or locomotion to the work to be performed.
Suitable well known gearing driven by hand steam or other convenient power may
be employed in connection with the above for propelling the apparatus along the
rails. Although only two platforms G and I have been described it will be under-
stood that the number may be varied according to elevation extent or requirements
of the work to be performed.
In commencing operations the mixing apparatus is placed upon the lower or
lowest platform and the materials to be mixed therein are conveniently fed thereto
by means of a steam crane K (or other suitable means m) situated at the required
elevation and position. In the diagram the materials M to be mixed are shewn as
being raised by the steam crane K from the one side and then discharged into the
hopper B of the mixing apparatus through which it passes and is conducted to
form the concrete wall or structure as shewn at L. When the said wall or structure
has attained a certain heighth so as to approximately close or interfere with the
convenient discharge of the materials the mixing apparatus is raised by the steam
crane or other suitable means to the next platform of greater elevation the one
below being then raised clear of the operations as already described with reference
to the dotted position marked H in the diagram. In this manner the operations
above described are repeated and extended according to the requirements and
nature of the structure to be formed.
It may be mentioned that water is not required for mixing the materials to be
employed in sub aqueous structures and that in using water for land constructions
as soon as materials are let out from the elevating box or crane bucket the water
should be suddenly turned and and then quickly cut off again.
It will be readily understood that although I have described my apparatus as
particularly suitable for mixing concrete it is equally applicable to the mixing of
other cements or analogous materials or substances.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the herein before in part
recited Letters Patent is
First The improved apparatus for mixing concrete cements or other analogous
substances or materials having sloping or inclined shelves constructed arranged
and operating substantially as and for the purposes herein before described and
illustrated in the accompanying Drawings.
Second The combination with the mixing apparatus set forth in the preceding
claim of means for admitting water into the interior of the said apparatus so as to
mingle with the falling materials to be mixed substantially as and for the purposes
herein before described with reference to the accompanying Drawings.
In witness whereof I the said John Jackson have to this my Specification
set my hand and seal this Tenth day of July One thousand eight hundred