AN IMPROVEMENT IN THE APRARATUS USED WHEN EXPRESSING CLAY OR BRICK EARTH THROUGH DIES
Year: 1859

page_text: LETTERS PATENT to John Basford, of the Brick Yard, Oundle, in the
County of Northampton, for the Invention of "AN IMPROVEMENT IN THE
APRARATUS USED WHEN EXPRESSING CLAY OR BRICK EARTH THROUGH
DIES."
Sealed the 27th October 1859, and dated the 2nd May 1859.
PROVISIONAL SPECIFICATION left by the said John Basford at the
Office of the Commissioners of Patents, with his Petition, on the 2nd
May 1859.
I, JOHN BASFORD, of the Brick Yard, Oundle, in the County of North-
ampton, do hereby declare the nature of the Invention for "AN IMPROVE-
MENT IN THE APPARATUS USED WHEN EXPRESSING CLAY OR BRICK EARTH THROUGH
DIES," to be as follows:-
This Invention has for its object an improvement in the apparatus used
when expressing clay or brick earth through dies, and consists in forming the
bridge which carries the core or interior die in a bent or zig-zag form, and in
such manner that the clay or plastic brick earth in place of being cut or
divided radially, as heretofore, is divided in an inclined direction, by which a
lap joint is formed in the clay as it passes through the die in place of a butt
joint.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Basford in the Great Seal Patent Office on the
1st November 1859..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BASFORD, of the Brick Yard, Oundle, in the County of Northampton, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of May, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Basford, Her special licence that I, the said John Basford,
my executors, administrators, and assigns, or such others as I, the said John
Basford, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVEMENT IN
THE APPARATUS USED WHEN EXPRESSING CLAY OR BRICK EARTH THROUGH
DIES," upon the condition (amongst others) that I, the said John Basford,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said John Basford, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the fol-
lowing statement thereof, that is to say :-
This Invention has for its object an improvement in the apparatus used
when expressing clay or brick earth through dies, and consists in forming the
bridge, which carries the core or interior die in a bent or zig-zag form, and in
such manner that the clay or plastic brick earth in place of being cut or
divided radially, as heretofore, is divided in an inclined direction, by which a
lap joint is formed in the clay as it passes through the die in place of a butt
joint.
Having thus stated the nature of my Invention, I will proceed more fully
to describe the manner of performing the same.

page_text: Figure 1 represents a plan or interior view of a moulding die for making
cylindrical pipes, the core or inner die being carried by a bridge according to
my Invention. a is the outer die; b is the inner die; and c is the bridge by
which the inner die is carried, and which in place of being straight across the
moulding orifice, as heretofore, is bent into a zig-zag form by which the clay
in place of being divided in a straight line across the moulding orifice will be
divided in an inclined direction, so that when the clay which has been divided
by the bridge again meets the joint will be a lap joint in place of a butt joint,
such as bas heretofore resulted from the use of a straight bridge. Figure 2
shows a section of a pipe moulded by a die such as that shown at Figure 1.
The red dotted lines represent the lap joints of the clay consequent on using
the description of bridge shown; and the black dotted lines show butt joints,
such as have heretofore been formed consequent on having bridges straight
across the moulding orifices.
The form of bridge shown in the Drawing is the one I prefer, but the form
or bending of the bridge which carries the inner die may be varied, so long as
the parts which divide the clay are caused to incline across the passage through
the die, and produce longer joints than the thickness of the clay when
moulded, that is, lap or inclined joints in contradistinction to butt joints.
I have not thought it necessary to show dies for moulding other than
cylinders, as a workman will, from the Drawing, construct bridges suitable for
dies for moulding other forms than cylinders.
In witness whereof, I, the said John Basford, have hereunto set my
hand and seal, this 31st day of October, in the year of our Lord
One thousand eight hundred and fifty-nine.
JOHN BASFORD.
(L.S.)