IMPROVEMENTS. IN MACHINERY FOR MAKING BRICKS, TILES, PIPES, AND. OTHER ARTICLES FORMED OF PLASTIC MATERIALS
Year: 1861

page_text: PROVISIONAL SPECIFICATION left by William Carter Stafford Percy
at the Office of the Commissioners of Patents, with his, Petition, on
the 11th December 1861.
を
I, WILLIAM CARTER STAFFORD PEROY of the: City of Manchester, in the
County of Lancaster, Patent. Brick Machinist, do hereby declare the nature.
of the said: Invention for "IMPROVEMENTS. IN MACHINERY FOR MAKING BRICKS,
TILES, PIPES, AND. OTHER ARTICLES FORMED OF PLASTIC MATERIALS," to be as.
follows
The first part of my Invention consists in the following combination and
arrangement of.. mechanism; namely, a pug mill, the axis of. which is placed
in a horizontal position, and a table rotating on a vertical axis.and carrying a
series of mould.boxes with pistons. The table is arranged so that the mould:
boxes will pass under a mouthpiece. from the under side of..the pug mill
cylinder near its end. The clay or plastic material is fed to the pug cylinder
at one end, and is delivered at the lower side of the pug cylinder at the other
end through the said mouthpiece and into the mould-boxes, which are filled
as they pass under; and as the said table rotates the pistons of the mould
boxes are lifted by inclined planes, which act upon antifriction bowls carried
by stems from the pistons of the moulds, and thus the moulded clay is
delivered from the mould boxes ready to be carried away.
The second part of my Invention consists in the following combination and
arrangement of mechanism, namely, a pug mill, with its axis placed in an

page_text: horizontal position. The lower half of the pug cylinder is perforated so that
the material acted upon by the plug blades may be pugged and forced through
the perforations, and thus the crude material which is fed to the pug cylinder
at one end is pugged and screened, or freed from stones, roots, and other
matters, which are delivered from the pug cylinder at the other end. The
screened material falls upon an endless apron, which conveys and delivers it to
an arrangement of three rollers, all with their axes in a horizontal position.
No. 2 roller is placed above No. 1 roller, the axes of both rollers being in the
same vertical plane; and No. 3 roller is placed, with its axis, in the same
horizontal plane as No. 1 roller. Spaces are left between No. 1 and 2 and
No. 1 and 3 rollers. No. 1 and 2 rollers are used to force the material
through moulding orifices for making pipes, tiles, and other articles, and
No. 1 and 3 rollers are used to force the material into a chamber which
delivers the clay into mould boxes. These mould boxes are carried either on
a table rotating on a vertical axis, or upon an oscillating table on a vertical or
horizontal axis, or upon a straight reciprocating table. The machine is not
intended to be used for both purposes at the same time, as "doctors" are
employed to prevent the clay from passing between No. 1 and 2 rollers when
it is required between No. 1 and 3, and vice versa.
The third part of my Invention relates to machines for moulding, in which
mould boxes pass a chamber to be charged with material, the surface of the
material in the mould boxes rubbing against a plate or other surface when
withdrawn from the mouth of the charging chamber. In this mode of
operation the material, owing to its adhesion to the plate or surface, is partly
withdrawn from one side of the mould box, and thus an article is produced
defective in form.
My object is to remove this defect, and 'this part of my Invention consists
in applying a roller covered with fibrous material, so as to pass over the
surface of the mould box in the direction in which it moves, and thus replace
the material and fill the mould box perfectly.