IMPROVEMENTS IN MACHINERY FOR PRESSING WITH PERFORATIONS BRICKS, TILES, OR BRICK ORNAMENT OR MOULDINGS OF ANY KIND WHATSOEVER, WHEREBY GREATER ACCURACY OF SHAPE AND FORM ARE ATTAINED, AND GREATER TRUTH IN THE DELINEATION OF LINES FOR MOULDED OR ORNAMENTAL FACES
Year: 1881

page_text: LETTERS PATENT to Benjamin Cuff Dover Greenhill, of the Manor House,
Puriton, in the County of Somerset, Gentleman, for an Invention of
"IMPROVEMENTS IN MACHINERY FOR PRESSING WITH PERFORATIONS BRICKS,
TILES, OR BRICK ORNAMENT OR MOULDINGS OF ANY KIND WHATSOEVER,
WHEREBY GREATER ACCURACY OF SHAPE AND FORM ARE ATTAINED, AND
GREATER TRUTH IN THE DELINEATION OF LINES FOR MOULDED OR
ORNAMENTAL FACES."
PROVISIONAL SPECIFICATION left by the said Benjamin Cuff Dover
Greenhill at the Office of the Commissioners of Patents on the 8th February
1881.
BENJAMIN CUFF DOVER GREENHILL, of the Manor House, Puriton, in the
County of Somerset, Gentleman. "IMPROVEMENTS IN MACHINERY FOR PRESSING
WITH PERFORATIONS BRICKS, TILES, OR BRICK ORNAMENT OR MOULDINGS OF
ANY KIND WHATSOEVER, WHEREBY GREATER ACCURACY OF SHAPE AND FORM
ARE ATTAINED, AND GREATER TRUTH IN THE DELINEATION OF LINES FOR
MOULDED OR ORNAMENTAL FACES."
An improved machine consisting of a die upon which a cube of clay is placed,
The clay having been previously passed through an ordinary die and cut to the
required size and shape. The impressed cube of clay is then carried down into the
die by means of a lever or wheel which acts upon an eccentric, and while forcing
the clay downwards communicates a motion to and forces upwards the plate at the
bottom of the die. The same lever or wheel which puts in motion the eccentric
brings down a series of plungers for forming the perforations according to the
number desired; these are forced into the clay by the same motion, and at
the same time as the top and bottom plates of the die are compacting the clay, and
these plungers are extricated by the same movement, the reversing of the said
wheel or lever, which forces the now compactly pressed brick upwards and frees it
from the die. The perforated brick can now be removed plain or moulded with all
its arrises and faces, clean, sharp, smooth, and true.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent and of
an Order of the Lord Chancellor, filed by the said Benjamin Cuff Dover
Greenhill in the Great Seal Patent Office on the 31st August 1881.
BENJAMIN CUFF DOVER GREENHILL, of the Manor House, Puriton, in the
County of Somerset, Gentleman. "IMPROVEMENTS IN MACHINERY FOR PRESSING
WITH PERFORATIONS BRICKS, TILES, OR BRICK ORNAMENT OR MOULDINGS OF
ANY KIND WHATSOEVER, WHEREBY GREATER ACCURACY OF SHAPE AND FORM
ARE OBTAINED, AND GREATER TRUTH IN THE DELINEATION OF LINES FOR
MOULDED OR ORNAMENTAL FACES."
This Invention has for its object improvements in machinery for pressing with
perforations bricks, tiles, or brick ornament or mouldings of any kind whatsoever,
whereby greater accuracy of shape and form are obtained, and greater truth in the
delineation of lines for moulded or ornamental faces.
The improved machine consisting of a die upon which a cube of clay is placed.
The clay having been previously passed through an ordinary die and cut to the
required size and shape. The impressed cube of clay is then carried down into
the die by means of a lever or wheel which acts upon an eccentric, and while
forcing the clay downwards communicates a motion to and forces upwards the plate
at the bottom of the die. The same lever or wheel which puts in motion the
eccentric brings down a series of plungers for forming the perforations according to
the number desired; these are forced into the clay by the same motion and at the
same time as the top and bottom plates of the die are compacting the clay, and
.these plungers are extricated by the same movement, the reversing of the said
wheel or lever which forces the now compactly pressed brick upwards and frees it
from the die. The perforated brick can now be removed plain or moulded with all
its arrises and faces, clean, sharp, smooth, and true.
In the Drawing annexed I have shewn at Figures 1 and 2 diagrams to illustrato
the action of the machine, and also a front view of the machine itself at Figure 3.
A is the bottom die of the mould B; C is the top die; D is a series of small
plungers for forming the perforations in the brick; E is the cube of clay previously
cut to the required size and shape. This cube of clay is placed, as shown at
Figure 1 on to the bottom die A when this die is at the top of the mould. The
top die C together with the plungers D then descends on to the top of the cube of
clay, and the bottom die A also descends and the cube of clay is carried downwards
into the mould; the small plungers are caused to descend further than the top
die C, and pass through the cube of clay and enter holes formed through the lower
die A. Afterwards the cube of clay is powerfully squeezed between the top and
bottom dies. The several parts are then in the position shewn at Figure 2.
dies and plungers are then again raised into the position shewn at Figure 1, and
the finished brick can then be taken away and another cube of clay be placed onto
the lower die to be treated in the same manner.
The
Having thus described the nature of my Invention and the manner of performing
the same, I would have it understood that I claim,-
The improvements in machinery for pressing bricks, tiles, or brick ornaments or
mouldings of any kind, substantially as herein before described.
In witness whereof, I, the said Benjamin Cuff Dover Greenhill, have hereunto
set my hand and seal, this Twenty ninth day of August, in the year of
our Lord One thousand eight hundred and eighty one.
B. C. DOVER GREENHILL. (L.S.)