Improvements in Machinery for Making Bricks, and for analogous purposes.
Year: 1890

page_text: Date of Application, 1st Mar., 1890
Complete Specification Left. 1st Dec., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Making Bricks, and for analogous
purposes.
I WILLIAM SAYER of 144 Uttoxeter Road Derby in the County of Derby Engineer
do hereby declare the nature of this invention to be as follows:-
The objects of my invention are firstly to prevent the clay or other plastic material
from clogging the knives cutters or worms used in brick making and similar machinery
and secondly to prevent the clay or other plastic material from becoming too dense
from compression whilst passing through the die.
In carrying out my invention I make the pugging and expressing knives and worms
of a rounded or curved section from where the knife blade joins its boss or centre
toward the periphery tip of the knife or worm the curved or rounded portion receding
from the direction of its thrust against the clay on which it operates.
In carrying out the second part of my invention I form the inside opening of the
brick die er mouthpiece of the brick making machine with a projecting cutting edge
on its inner side or opening where it enters into and receives the clay or other
material from the expressing or pug barrel of the machine to which it is connected by
an outer flange. The object of this is to allow of the stream or column of clay being
cut or divided from the central column as it is driven or forced up to the inside
opening of the die or mouthpiece and so prevent its being compressed while passing
through the die as is usual with the rounded or tapered openings to dies and mouth-
pieces now in use.
Dated this 96th day of February 1890.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery for Making Bricks, and for analogous
purposes.
I WILLIAM SAYER of 144. Uttoxeter Road Derby, in the County of Derby,
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 :-
The object of my invention is to prevent the clay or other plastic material clogging
the knives, cutters, or worms used in brickmaking and similar machinery, and also to
prevent the clay or other plastic material from becoming too dense from compression
whilst passing through the die.
Referring to the accompanying drawings and to the letters and figures of reference
thereon marked,
Figure 1 is a sectional elevation showing the knives and worm of a pug mill with
die or mouthpiece attached thereto.
Figure 2 is a section through the worm showing the front curve of blade.
Figure 3 is a horizontal section of the die showing the method of side lubrication
by water or other liquids, with small projecting plates G partly covering the lubri-
cating inlets H.
In carrying out my invention, I make the pugging and expressing knives A, and
worns B, of a rounded or curved section C, from where the knife blade joins its boss
or centre, towards the periphery tip of the knife or worm, the curved or rounded
portion receding from the direction of its thrust against the clay on which it
operates.

page_text: I form the inside opening of the brick die D of the brickmaking machine with a pro-
jecting cutting edge E on its inner side or opening, where it enters into, and receives the
clay or other material from the expressing or pug barrel of the machine, to which it
is connected by an outer flange F. The object of this is to allow of the stream or
column of clay being cut or divided from the central column as it is driven or forced
up to the inside opening of the die or mouthpiece, and so prevents it being compressed
while passing through the die as is usual with the rounded and tapered openings to
dies and mouthpieces now in use.
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 :-
First: In machines for making bricks and other articles from clay or like plastic
material, forming the knives cutters or worms used for pugging and expressing such
material of a rounded or curved section such as C in Figures 1 and 2 of the accom-
panying drawings, as and for the purposes herein described and substantially as
illustrated.
Second: In machines for making bricks and other articles from clay or like plastic
material forming on, or attaching to, the mouths of brick dies or the portions of such
machines which receive the plastic material from the pug mill, a cutting edge such
as E as and for the purposes herein described and substantially as illustrated by the
accompanying drawings.
Dated this First day of December 1890.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C.