Improvements in or connected with Machines for Moulding Bricks and the like.
Year: 1893

page_text: Date of Application, 7th Sept., 1893
Complete Specification Left, 12th Jan., 1894-Accepted, 17th Feb. 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machines for Moulding Bricks
and the like.
I, JOHN WILLIAM CRAVEN of Westgate Common Foundry, Wakefield in the
County of York, Engineer do hereby declare the nature of this invention to be as
follows:-
My invention has for its object to provide machines for moulding bricks and
the like with means whereby the feeding of the clay, or material into the moulds is
effected in a more efficient manner than hitherto.
According to my invention the mouth or exit for the clay or matter from the pug
mill or container of the matter to be moulded is provided with an opening corre-
sponding in shape to that of the moulds into which the clay or matter is to be fed
there being inclined surfaces leading from the internal sides of the pug mill or
container to the said opening. The said exit is also provided with a passage around
it into which steam or other lubricant is introduced it issuing from the said passage
and coming into contact with the clay or material as it issues from the said exit.
The aforesaid inclined surfaces leading to and forming the exit opening, may be
made so that they can be removed and replaced by others as desired.
Dated this 7th day of September 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
•
Improvements in or connected with Machines for Moulding Bricks
and the like.
1 JOHN WILLIAM CRAVEN of Westgate Commou Foundry Wakefield 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 :-
My invention has for its object to provide machines for moulding bricks and
the like with means whereby the feeding of the clay or material into the moulds is
effected in a more efficient manner than hitherto. According to my invention the
mouth or exit for the clay or matter from the pug mill or container of the matter
to be moulded is provided with an opening corresponding in shape to that of the
moulds into which the clay or matter is to be fed there being inclined surfaces
leading from or near to, the internal sides of the pug mill or container to the said
opening. The said exit is also provided with a passage around it into which steam
or other lubricant is introduced, it issuing from the said passage and coming into
contact with the clay or material as it issues from the said exit. The aforesaid
inclined surfaces leading to and forming the exit opening may be made so that
they can be removed and replaced by others as desired.
The accompanying drawings shew manners in which my invention can be carried
out in practice. Figure 1 is a plan and Figures 2 and 3. are vertical sections at
right angles to each other of the lower part of a pug mill to which my invention is
applied. The bottom plate A of the pug mill is shaped to receive the mouthpiece B
which has an opening or outlet mouth corresponding, or nearly corresponding, in
shape and size with the moulds. It is made in one piece or of separate plates and
Prime]

page_text: has inclined sides & leading from the inside of the pug mill to the said mouth. In
the said bottom plate A is a passage a opening into the passage c around the outlet
mouth into which passages steam or other lubricant is admitted by the pipe d.
Figures 4 and 5 are a vertical section and plan shewing a somewhat different form
of the mouthpiece the plates of which are provided with flanges at which rest
on projections a² from the bottom plate and are secured by screws e so that they
can be readily removed and replaced.
At the corners I prefer to make recesses as at x to give a little larger area at
those parts so as to fill the moulds more perfectly as without these there would be
greater friction at the corners.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
For machines for moulding bricks and the like a mouthpiece formed as described
and provided with means for admitting steam or other lubricant substantially as
hereinbefore described and also the particular constructions thereof illustrated in
the several figures of the accompanying drawings.
Dated this 8th day of January 1894.
JOHNSONS & WILLCOX,
Agents.