IMPROVEMENTS IN THE MANUFACTURE OF CHIMNEY POTS, PEDESTALS, AND SUCH LIKE ARTICLES MADE FROM GLAD OD PILOTIC MANDATO LAWEBSE 335 MYAM D
Year: 1860

page_text: LETTERS PATENT to William Parry, of High Street, Deptford, in the
County of Kent, Potter, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF CHIMNEY POTS, PEDESTALS, AND SUCH LIKE ARTICLES MADE
FROM GLAD OD PILOTIC MANDATO
LAWEBSE 335 MYAM D"
Sealed the 21st June 1861, and dated the 27th December 1860.
PROVISIONAL SPECIFICATION left by the said William Parry, at the
Office of the Commissioners of Patents, with his Petition, on the
27th December 1860.
I, WILLIAM PARRY, of High Street, Deptford, in the County of Kent,
Potter, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF CHIMNEY POTS, PEDESTALS, AND SUCH LIKE ARTICLES
MADE FROM CLAY OR PLASTIC MATERIALS, AND MACHINERY FOR THAT PURPOSE," to
be as follows:-
The mode heretofore practised of shaping chimney pots and such like
articles made of earthenware or plastic materials, has been to work them into
form by hand, requiring skilled workmen for that purpose, especially in forming
chimney pots with ornamented caps or tops. Now the object and intention of
this Invention is to dispense with the necessity for skilled workmen, and to
enable unskilled persons to conduct such manufacture. I propose to effect
this object by employing machinery of the following kind, that is say:-I form
a die or mould of any suitable material, and of the desired shape of the outside

page_text: of said chimney pot; this die or mould I form in two parts, for example, I
form the longest part thereof hollow and entire, or in some cases divided
lengthwise, and to one or both ends of this part I connect, by a hinge or
otherwise, a cap of the shape which it is intended to form the cap or top or
base of the chimney pot, pilaster, or other like article, having worked the clay
thereinto sufficiently, the several parts of the die or mould are disconnected,
and the shaped material removed therefrom ready for the drying and burning
or baking operations.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Parry in the Great Seal Patent Office on the
27th June 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
PARRY, of High Street, Deptford, in the County of Kent, Potter, send
greeting.
WHEREAS Her most-Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of December, in the year of our
Lord One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Parry, Her special licence that I, the said William
Parry, my executors, administrators, and assigns, or such other as I, the
said William Parry, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVE-
MENTS IN THE MANUFACTURE OF CHIMNEY POTS, PEDESTALS, AND SUCH LIKE ARTICLES,
MADE FROM CLAY OR PLASTIC MATERIALS, AND MACHINERY FOR THAT PURPOSE," upon
the condition (amongst others) that I, the said William Parry, 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 William Parry, do hereby declare
the nature of my said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the
following statement, that is to say:-
The mode heretofore practised of shaping chimney pots and such like
articles made of earthenware or plastic materials, has been to work them into
form by hand, requiring skilled workmen for that purpose, especially in forming
chimney pots with ornamental caps or tops. Now the object and intention of
this Invention is to dispense with the necessity for skilled workmen, and to
enable unskilled persons to conduct such manufacture. I propose to effect
this object by employing machinery of the following kind, that is to say, I
form a die or mould of any suitable material and of the desired shape of the
outside of said chimney pot; this die or mould I form in two parts, for
example, I form the longest part thereof hollow and entire, or in some cases
divided lengthwise, and to one or both ends of this part I connect, by a hinge
or otherwise, a cap of the shape which it is intended to form the cap or top or
base of the chimney pot, pilaster, or other like article. Having worked the
clay thereinto sufficiently, the several parts of the die or mould are disconnected,
and the shaped material removed therefrom ready for the drying and burning
or baking operations.
In order to explain my said Invention as completely as possible, I now
proceed to describe the best means I am acquainted with for carrying the
same into practical effect, reference being had to the illustrative Sheet of
Drawings hereunto annexed, and to the numeral figures and letters of
reference marked thereon respectively, as follows:-
DESCRIPTION OF THE DRAWING.
Figure 1 exhibits a transverse and vertical section of my improved machinery
adapted to an ordinary cylinder and bed plate or table, such as are now used
by potters for the manufacture of drain pipes; Figure 2 is a top plan view of
the dies which I employ for shaping or moulding the caps of chimney pots and,
other like articles; Figure 3 is a top plan view of other portions of my
improved machinery; Figure 4, a transverse and vertical section of parts
herein-after particularly described and referred to.
Figure 5, an elevation of a chimney pot manufactured by my improved
machinery.
At each of the foregoing Figures I employ similar letters of reference to.
denote corresponding parts, in so far as such parts appear or can be seen at,
each of such said Figures respectively.
A is a portion of an ordinary cylinder mounted on trunnions; B, a bed plate
or table; C, C, guide rods; D, D, weights to counterbalance. the weight of

page_text: bed plate and moulded material thereon, all of these said parts or pieces
are well known to and commonly used by potters in the manufacture of drain
pipes.
The following is the improved machinery which I propose to adapt to the
aforesaid old parts; E, E, are dies or moulds of cast iron formed in two parts or
halves, connected together by pins a, a, fixed in one of the said halves of the
die or mould, said pins fitting into corresponding holes formed in the other half
of the die or mould, also by two catch levers G, G, hooking around pins b, b, as
exhibited; H, H, are metal plates capable of being slided along the guide
pieces or runners c, c, fixed to the under side of the ordinary false bottom I ;
these plates are employed to form a neck or shoulder in the plastic material,
as at d; e, e, are holes formed in said plates to receive the pins f,f, fixed one
in each half of the dies or moulds E; said pins being employed to hold the
dies in proper position around the core L, whilst the clay is being forced
thereinto; K and L are core pieces, that marked K, which is old and com-
monly used, is fixed to the triangle of iron M in the ordinary way. That
marked L, which is new, is placed upon the board N, which supports the dies
or moulds E, E, and is held in proper position by a projecting rim formed
on the core L, fitting into a corresponding recess formed in the core K. I
also form this core taper, that it may be easily removed from the moulded clay.
The mode of operating with the above machinery is as follows:-The table B,
moulds or dies E, E, and weights D, D, at the commencement of the operation
are in the position denoted by the dotted lines at Figure 1, so that supposing
the cylinder A to be charged with clay, and pressure exerted thereon by the
piston, the effect will be to force the clay into the dies or moulds, and thus fill
the same, thereby producing an ornamental moulding serving as the cap or
head of a chimney pot, pilaster, or other like article (the Drawing represents
a chimney pot) the dies or moulds when. filled descend by the pressure of the
clay thereon, and as the clay continues to be forced through the annular space
between the false bottom I and the core K, a hollow cylinder of clay is pro-.
duced in the usual way, and of uniform diameter and thickness for a certain
distance determined by a guage suitably fixed, so that when the workman sees
that the bed plate or table has descended sufficiently far, he then unhooks the
catches G of the sliding plates H, H, and draws them outwards as denoted by
the dotted lines at Figures 3 and 4, thus leaving a wider space for the passage
of the clay, as at Figure 1, and thereby increasing the diameter of the lower
or bottom part of the chimney pot, pilaster, or other like article, and forming
the neck d. I would here observe, that it is desirable to use the clay as dry
as possible, to prevent adhesion thereof to the iron dies or moulds; and as a '

page_text: further preventive against such adhesion, I besmear the inside of said dies or
moulds with oil. By the above means I am enabled to produce a chimney
pot, pilaster, or other like article with a bold moulding or ornamental cap or
head at one operation, whereas three separate operations are now required and
employed in the manufacture of chimney pots and drain pipes to produce a
simple plain enlargement at top and bottom thereof. In case it might be
desirable to manufacture a taper chimney pot, pilaster, or other like article,
the same might be effected by drawing back the sliding plates H, H,
gradually, either by hand or by mechanism suitably connected to said plates
for that purpose.
Having now fully described and set forth the nature and object of my said
Invention of "Improvements in the Manufacture of Chimney Pots, Pedestals,
and such like Articles made from Clay or Plastic Materials, and Machinery
for that Purpose," together with the best means I am acquainted with for
carrying the same into practical effect, I would remark, in conclusion, that I
hereby declare my Invention to consist in, and I claim the use of the dies or
moulds E, E, and sliding plates H, H, in combination with the cylinder A,
and other old and well known parts above described and represented, whereby
I am enabled to manufacture chimney pots, pedestals, and such like articles
at one operation as above stated.
In witness whereof, I, the said William Parry, have hereunto set my
hand and seal, this Twenty-sixth day of June, in the year of our
Lord One thousand eight hundred and sixty-one.
WILLIAM PARKY.
L.S.)