Improvements in Brick Making Machinery.
Year: 1892

page_text: Date of Application, 3rd May 1892
Complete Specification Left, 3rd Mar., 1893-Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Brick Making Machinery.
We, WILLIAM WALTER HEWITT, Knockhall Lodge, Greenhithe, Kent, Engineer
and ALFRED SUART, 32 Great St. Helens, E.C. Shipowner, do hereby declare
the nature of this invention to be as follows:-
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с
This invention relates to machinery for moulding bricks particularly such as,
consisting partly of bituminous material, or of cement mixed with pulp or other
matter require time in their moulds for cooling or setting.
From a suitable pug mill or other feeder the mixed materials that are to consti-
tute the brick are forced in proper quantity into moulds which, being arranged on
an intermittently travelling apron, successively present themselves to be charged.
Each charged mould, on arriving at a certain point in its course has a lid placed on
it and this lid after being forced down to compress the material is secured in its
place by suitable catches. The mould continuing to travel, its contents have time
to cool or set, and on coming to another point of its travel its lid is released and
the brick is forced out of the mould. In order to reduce the length of travelling
apron the charged moulds may be carried not only along its upper side, but also in
an inverted position along the lower side, being in both cases supported by wheels
running on rails. The charged moulds when they require cooling may be led in
part of their course through a current of cold air or through water, and after the
discharge of the bricks from them, may be heated again by passing through a
current of hot air.
In cases where the bricks are to consist of two layers of different material, a
second pug mill or feeder may be arranged so that when the first has charged the
moulds to part of their depth with the one material, the second may fill them up
with the other material.
f
Dated this 3rd day of April 1892.
•
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Brick Making Machinery.
We WILLIAM WALTER HEWITT, Knockhall Lodge, Greenhithe, Kent,
Engineer, and ALFRED SUART 32 Great St. Helens E.C., Shipowner, 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 relates to machinery for moulding bricks particularly such as,
consisting partly of bituminous material, or of cement mixed with pulp or other
matter, require time in their moulds for cooling or setting.
From a suitable pug mill or other feeder the mixed materials that are to
constitute the brick are forced in proper quantity into moulds which, being
arranged on an intermittently travelling apron, successively present themselves
to be charged. Each charged mould, on arriving at a certain point in its course,
has a lid placed on it and this lid, after being forced down to compress the
material is secured in its place by suitable catches. The mould continuing to
travel, its contents have time to cool or set, and, on coming to another point of
its travel, its lid is released and the brick is forced out of the mould. In order
to reduce the length of travelling apron, the charged moulds may be carried,
D1

page_text: not only along its upper side, but also in an inverted position along the lower
side, being in both cases supported by wheels running on rails. The charged
moulds, when they require cooling, may be led in part of their course through a
current of cold air or through water, and, after the discharge of the bricks from
them, may be heated again by passing through a current of hot air.
In cases where the bricks are to consist of two layers of different material, a
second pug mill or feeder may be arranged so that when the first has charged the
moulds to part of their depth with the one material, the second may fill them up
with the other material.
The pug or feeder, the intermittently travelling apron and means of compressing
the material in the moulds and of discharging the material therefrom, may be of
any known construction, to which we inake no claim. But as the particular
material consisting partly of bituminous matter or cement mixed with other sub-
stances has to be retained in the moulds in a compressed condition until it sets, we
shall describe a suitable construction of mould for that purpose, referring to the
Accompanying drawings.
Fig. 1 is a transverse section, Fig. 2 a plan and Fig. 3 an end view of the
mould.
A are the sides and ends projecting up from a base B which has through it a
hole sufficiently large to admit a plunger for acting on a loose bottom plate D, to
extrude the moulded material M, which had been compressed by forcing down a
cover C. This cover is held down by a pair of latches L at the ends of two bell
crank levers urged by springs S acting on their arms L¹. On depressing the
arms L the latches L are withdrawn leaving the cover C free, so that on pushing
up the bottom plate D, the material M can be extruded.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
For moulding bricks of material requiring time to set, a mould having a bottom
plate that can be raised separate from the base and a cover plate held down by
spring latches, substantially as and for the purpose set forth.
Dated this 2nd day of March 1893.
ABEL & IMRAY,
Agents for the Applicants.